185-415: Psychology is the scientific study of mind and behavior . Its subject matter includes the behavior of humans and nonhumans, both conscious and unconscious phenomena, and mental processes such as thoughts , feelings , and motives . Psychology is an academic discipline of immense scope, crossing the boundaries between the natural and social sciences . Biological psychologists seek an understanding of
370-405: A midlife crisis involving an inner conflict about personal identity , often associated with anxiety, a sense of lack of accomplishments in life, and an awareness of mortality. Intellectual faculties tend to decline in later adulthood, specifically the ability to learn complex unfamiliar tasks and later also the ability to remember, while people tend to become more inward-looking and cautious. It
555-474: A nerve net , like jellyfish , and organisms with bilaterally symmetric bodies , whose nervous systems tend to be more centralized. About 540 million years ago, vertebrates evolved within the group of bilaterally organized organisms. All vertebrates, like birds and mammals , have a central nervous system including a complex brain with specialized functions while invertebrates, like clams and insects , either have no brains or tend to have simple brains. With
740-553: A Black lens and dedicated her career to focusing on the anxiety of African American women. She founded the organization Rise Sally Rise which helps Black women cope with anxiety. She published her work Soothe Your Nerves: The Black Woman's Guide to Understanding and Overcoming Anxiety, Panic and Fear in 2003. In 2002 Dr. Teresa LaFromboise, former president of the Society of Indian Psychologists, received
925-448: A bicycle or playing a musical instrument. Another distinction is between short-term memory , which holds information for brief periods, usually with the purpose of completing specific cognitive tasks, and long-term memory , which can store information indefinitely. Thinking involves the processing of information and the manipulation of concepts and ideas . It is a goal-oriented activity that often happens in response to experiences as
1110-402: A biologically potent stimulus (e.g., food that elicits salivation) is paired with a previously neutral stimulus (e.g., a bell) over several learning trials, the neutral stimulus by itself can come to elicit the response the biologically potent stimulus elicits. Ivan Pavlov —known best for inducing dogs to salivate in the presence of a stimulus previously linked with food—became a leading figure in
1295-462: A bodily change causes mental discomfort or when a limb moves because of an intention . According to substance dualism , minds or souls exist as distinct substances that have mental states while material things are another type of substance. This view implies that, at least in principle, minds can exist without bodies. Property dualism is another view, saying that mind and matter are not distinct individuals but different properties that apply to
1480-475: A calculator extend the mind's capacity to store and process information. The closely related view of enactivism holds that mental processes involve an interaction between organism and environment. The mind–body problem is the difficulty of providing a general explanation of the relationship between mind and body, for example, of the link between thoughts and brain processes. Despite their different characteristics, mind and body interact with each other, like when
1665-568: A child should be recognized as their own person with their own right and have each session catered to the child's specific needs. She encouraged drawing, moving freely, and expressing themselves in any way. This helped build a strong therapeutic alliance with child patients, which allows psychologists to observe their normal behavior. She continued her research on the impact of children after family separation, children with socio-economically disadvantaged backgrounds, and all stages of child development from infancy to adolescence. Functional periodicity ,
1850-617: A close collaborator with Watson, examined biological manifestations of learning in the brain. Mind The mind is that which thinks , feels , perceives , imagines , remembers , and wills . The totality of mental phenomena, it includes both conscious processes, through which an individual is aware of external and internal circumstances, and unconscious processes, which can influence an individual without intention or awareness. Traditionally, minds were often conceived as separate entities that can exist on their own but are more commonly understood as capacities of material brains in
2035-464: A complex neural network and cognitive processes emerge from their electrical and chemical interactions. The human brain is divided into regions that are associated with different functions. The main regions are the hindbrain , midbrain , and forebrain . The hindbrain and the midbrain are responsible for many biological functions associated with basic survival while higher mental functions, ranging from thoughts to motivation, are primarily localized in
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#17327659597852220-414: A complex physical environment through processes like behavioral flexibility, learning, and tool use. Other suggested mechanisms include the effects of a changed diet with energy-rich food and general benefits from an increased speed and efficiency of information processing. Besides the development of mind in general in the course of history, there is also the development of individual human minds . Some of
2405-545: A concept of "recognition" ( pinyin : jen-shih ) which referred to the interface between individual perceptions and the socially accepted worldview; failure to correspond with party doctrine was "incorrect recognition." Psychology education was centralized under the Chinese Academy of Sciences , supervised by the State Council . In 1951, the academy created a Psychology Research Office, which in 1956 became
2590-406: A content that can be expressed by a declarative sentence . When a person believes that it is raining, they have the propositional attitude of belief towards the content "it is raining". Different types of propositional states are characterized by different attitudes towards their content. For instance, it is also possible to hope, fear, desire, or doubt that it is raining. A mental state or process
2775-400: A different form of malfunctioning. Anxiety disorders involve intense and persistent fear that is disproportionate to the actual threat and significantly impairs everyday life, like social phobias , which involve irrational fear of certain social situations. Anxiety disorders also include obsessive–compulsive disorder , for which the anxiety manifests in the form of intrusive thoughts that
2960-482: A great variety of methods to study the mind. Experimental approaches set up a controlled situation, either in the laboratory or the field, in which they modify independent variables and measure their effects on dependent variables . This approach makes it possible to identify causal relations between the variables. For example, to determine whether people with similar interests (independent variable) are more likely to become friends (dependent variables), participants of
3145-620: A greater connection to physiology, emerged in South America, under the leadership of Horacio G. Piñero at the University of Buenos Aires . In Russia, too, researchers placed greater emphasis on the biological basis for psychology, beginning with Ivan Sechenov 's 1873 essay, "Who Is to Develop Psychology and How?" Sechenov advanced the idea of brain reflexes and aggressively promoted a deterministic view of human behavior. The Russian-Soviet physiologist Ivan Pavlov discovered in dogs
3330-777: A hiatus for World War I, the Seventh Congress met in Oxford, with substantially greater participation from the war-victorious Anglo-Americans. In 1929, the Congress took place at Yale University in New Haven, Connecticut, attended by hundreds of members of the APA. Tokyo Imperial University led the way in bringing new psychology to the East. New ideas about psychology diffused from Japan into China. American psychology gained status upon
3515-432: A laboratory procedure meant to study attachment style by separating and uniting a child with their mother several different times under different circumstances. These field studies are also where she developed her attachment theory and the order of attachment styles , which was a landmark for developmental psychology . Because of her work, Ainsworth became one of the most cited psychologists of all time. Mamie Phipps Clark
3700-713: A learning process that was later termed " classical conditioning " and applied the process to human beings. One of the earliest psychology societies was La Société de Psychologie Physiologique in France, which lasted from 1885 to 1893. The first meeting of the International Congress of Psychology sponsored by the International Union of Psychological Science took place in Paris, in August 1889, amidst
3885-672: A long evolutionary history starting with the development of the nervous system and the brain . While it is generally accepted today that mind is not exclusive to humans and various non-human animals have some form of mind, there is no consensus at which point exactly the mind emerged. The evolution of mind is usually explained in terms of natural selection : genetic variations responsible for new or improved mental capacities, like better perception or social dispositions, have an increased chance of being passed on to future generations if they are beneficial to survival and reproduction . Minimal forms of information processing are already found in
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#17327659597854070-435: A more abstract level that cannot be achieved by physics. According to functionalism , mental concepts do not describe the internal constitution of physical substances but functional roles within a system. One consequence of this view is that mind does not depend on brains but can also be realized by other systems that implement the corresponding functional roles, possibly also computers. The hard problem of consciousness
4255-514: A new applied psychology organization called the International Congress of Psychotechnics Applied to Vocational Guidance, later called the International Congress of Psychotechnics and then the International Association of Applied Psychology . The IAAP is considered the oldest international psychology association. Today, at least 65 international groups deal with specialized aspects of psychology. In response to male predominance in
4440-526: A person actively remembers the fact that the Eiffel Tower is in Paris then this state is mental because it is part of consciousness; when the person does not think about it, this belief is still a mental state because the person could bring it to consciousness by thinking about it. This view denies the existence of a "deep unconsciousness", that is, unconscious mental states that cannot in principle become conscious. Another theory says that intentionality
4625-401: A problem, developing a plan to address it, implementing the plan, and assessing whether it worked. Thinking in the form of decision-making involves considering possible courses of action to assess which one is the most beneficial. As a symbolic process, thinking is deeply intertwined with language and some theorists hold that all thought happens through the medium of language . Imagination
4810-507: A professor of psychology at the University of Pennsylvania and Columbia University and the co-founder of Psychological Review , was the first professor of psychology in the United States . The German psychologist Hermann Ebbinghaus , a researcher at the University of Berlin , was a 19th-century contributor to the field. He pioneered the experimental study of memory and developed quantitative models of learning and forgetting. In
4995-697: A psychologist and political activist has applied a black, feminist, and class lens to all her psychological studies. Aiding progressive and women's issues, she has been the executive director for many NGOs. In 2007 she became the Senior Director of the Women's Programs Office of the American Psychological Association. Therefore, she was one of the creators of the APA's "Women in Psychology Timeline" which features
5180-487: A reaction to particular external stimuli. This view implies that mental phenomena are not private internal states but are accessible to empirical observation like regular physical phenomena. Functionalism agrees that mental states do not depend on the exact internal constitution of the mind and characterizes them instead in regard to their functional role. Unlike behaviorism, this role is not limited to behavioral patterns but includes other factors as well. For example, part of
5365-520: A religion established by Russian-American philosopher Helena Blavatsky , drew inspiration from these doctrines during her time in British India . Psychology was of interest to Enlightenment thinkers in Europe. In Germany, Gottfried Wilhelm Leibniz (1646–1716) applied his principles of calculus to the mind, arguing that mental activity took place on an indivisible continuum. He suggested that
5550-429: A representation of the world and the objects within it. This complex process underlying perceptual experience is shaped by many factors, including the individual's past experiences , cultural background, beliefs, knowledge, and expectations. Memory is the mechanism of storing and retrieving information. Episodic memory handles information about specific past events in one's life and makes this information available in
5735-429: A sea change of opinion, away from mentalism and towards "behavioralism." In 1913, John B. Watson coined the term behaviorism for this school of thought. Watson's famous Little Albert experiment in 1920 was at first thought to demonstrate that repeated use of upsetting loud noises could instill phobias (aversions to other stimuli) in an infant human, although such a conclusion was likely an exaggeration. Karl Lashley ,
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5920-664: A significant influence on psychology in China. Chancellor T'sai Yuan-p'ei introduced him at Peking University as a greater thinker than Confucius. Kuo Zing-yang who received a PhD at the University of California, Berkeley, became President of Zhejiang University and popularized behaviorism . After the Chinese Communist Party gained control of the country, the Stalinist Soviet Union became
6105-401: A study could be paired with either similar or dissimilar participants. After giving the pairs time to interact, it is assessed whether the members of similar pairs have more positive attitudes toward one another than the members of dissimilar pairs. Steven Blankaart Steven Blankaart Latinized as Stephanus Blancardus (24 October 1650, Middelburg – 23 February 1704, Amsterdam)
6290-592: A subjective experience of the world and are capable of suffering and feeling joy. Some of the difficulties of assessing animal minds are also reflected in the topic of artificial minds, that is, the question of whether computer systems implementing artificial intelligence should be considered a form of mind. This idea is consistent with some theories of the nature of mind, such as functionalism and its idea that mental concepts describe functional roles, which are implemented by biological brains but could in principle also be implemented by artificial devices. The Turing test
6475-471: A symbolic process aimed at making sense of them, organizing their information, and deciding how to respond. Logical reasoning is a form of thinking that starts from a set of premises and aims to arrive at a conclusion supported by these premises. This is the case when deducing that "Socrates is mortal" from the premises "Socrates is a man" and "all men are mortal". Problem-solving is a closely related process that consists of several steps, such as identifying
6660-585: A therapist to change patterns of thinking, feeling, and acting. Psychoanalysis aims to help patients resolve conflicts between the conscious and the unconscious mind. Cognitive behavioral therapy focuses on conscious mental phenomena to identify and change irrational beliefs and negative thought patterns. Behavior therapy , a related approach, relies on classical conditioning to unlearn harmful behaviors. Humanistic therapies try to help people gain insight into their self-worth and empower them to resolve their problems. Drug therapies use medication to alter
6845-676: A time at Imperial University in Japan, with publications such as Clairvoyance and Thoughtography by Tomokichi Fukurai, but it was mostly shunned by 1913. As a discipline, psychology has long sought to fend off accusations that it is a "soft" science . Philosopher of science Thomas Kuhn 's 1962 critique implied psychology overall was in a pre-paradigm state, lacking agreement on the type of overarching theory found in mature hard sciences such as chemistry and physics. Because some areas of psychology rely on research methods such as self-reports in surveys and questionnaires, critics asserted that psychology
7030-447: A total of 100,000 individual members. At least 30 other international organizations represent psychologists in different regions. In some places, governments legally regulate who can provide psychological services or represent themselves as a "psychologist." The APA defines a psychologist as someone with a doctoral degree in psychology. Early practitioners of experimental psychology distinguished themselves from parapsychology , which in
7215-583: A visit to the dentist. Another feature commonly ascribed to mental states is that they are private, meaning that others do not have this kind of direct access to a person's mental state and have to infer it from other observations, like the pain behavior of the person with the toothache. Some philosophers claim that knowledge of some or all mental states is infallible , for instance, that a person cannot be mistaken about whether they are in pain. A related view states that all mental states are either conscious or accessible to consciousness. According to this view, when
7400-445: A wide range of topics related to mental processes and behavior. Typically the latter group of psychologists work in academic settings (e.g., universities, medical schools, or hospitals). Another group of psychologists is employed in industrial and organizational settings. Yet others are involved in work on human development , aging, sports , health, forensic science , education , and the media . The word psychology derives from
7585-471: A wide variety of states, such as perception, thinking, fantasizing, dreaming, and altered states of consciousness . In the case of phenomenal consciousness, the awareness involves a direct and qualitative experience of mental phenomena, like the auditory experience of attending a concert. Access consciousness, by contrast, refers to an awareness of information that is accessible to other mental processes but not necessarily part of current experience. For example,
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7770-408: Is physicalism , also referred to as materialism , which states that everything is physical. According to eliminative physicalism , there are no mental phenomena, meaning that things like beliefs and desires do not form part of reality. Reductive physicalists defend a less radical position: they say that mental states exist but can, at least in principle, be completely described by physics without
7955-533: Is rational if it is based on good reasons or follows the norms of rationality. For example, a belief is rational if it relies on strong supporting evidence and a decision is rational if it follows careful deliberation of all the relevant factors and outcomes. Mental states are irrational if they are not based on good reasons, such as beliefs caused by faulty reasoning, superstition , or cognitive biases , and decisions that give into temptations instead of following one's best judgment. Mental states that fall outside
8140-462: Is a central aspect of the mind–body problem: it is the challenge of explaining how physical states can give rise to conscious experience. Its main difficulty lies in the subjective and qualitative nature of consciousness, which is unlike typical physical processes. The hard problem of consciousness contrasts with the "easy problems" of explaining how certain aspects of consciousness function, such as perception, memory, or learning. Another approach to
8325-450: Is a creative process of internally generating mental images. Unlike perception, it does not directly depend on the stimulation of sensory organs. Similar to dreaming , these images are often derived from previous experiences but can include novel combinations and elements. Imagination happens during daydreaming and plays a key role in art and literature but can also be used to come up with novel solutions to real-world problems. Motivation
8510-511: Is a cross-disciplinary, holistic model that concerns the ways in which interrelationships of biological, psychological, and socio-environmental factors affect health and behavior. Evolutionary psychology approaches thought and behavior from a modern evolutionary perspective. This perspective suggests that psychological adaptations evolved to solve recurrent problems in human ancestral environments. Evolutionary psychologists attempt to find out how human psychological traits are evolved adaptations,
8695-453: Is a dispositional belief. By activating the belief to consciously think about it or use it in other cognitive processes, it becomes occurrent until it is no longer actively considered or used. The great majority of a person's beliefs are dispositional most of the time. Traditionally, the mind was subdivided into mental faculties understood as capacities to perform certain functions or bring about certain processes. An influential subdivision in
8880-513: Is a traditionally influential procedure to test artificial intelligence: a person exchanges messages with two parties, one of them a human and the other a computer. The computer passes the test if it is not possible to reliably tell which party is the human and which one is the computer. While there are computer programs today that may pass the Turing test, this alone is usually not accepted as conclusive proof of mindedness. For some aspects of mind, it
9065-497: Is acquired and information processed. The intellect is one mental capacity responsible for thought, reasoning, and understanding and is closely related to intelligence as the ability to acquire, understand, and apply knowledge. The brain is the physical organ responsible for most or all mental functions. The modern English word mind originates from the Old English word gemynd , meaning "memory". This term gave rise to
9250-427: Is an aspect of other mental processes in which mental resources like awareness are directed towards certain features of experience and away from others. This happens when a driver focuses on the traffic while ignoring billboards on the side of the road. Attention can be controlled voluntarily in the pursuit of specific goals but can also occur involuntarily when a strong stimulus captures a person's attention. Attention
9435-584: Is an internal state that propels individuals to initiate, continue, or terminate goal-directed behavior. It is responsible for the formation of intentions to perform actions and affects what goals someone pursues, how much effort they invest in the activity, and how long they engage in it. Motivation is affected by emotions, which are temporary experiences of positive or negative feelings like joy or anger. They are directed at and evaluate specific events, persons, or situations. They usually come together with certain physiological and behavioral responses. Attention
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#17327659597859620-421: Is commonly acknowledged today that animals have some form of mind, but it is controversial to which animals this applies and how their mind differs from the human mind. Different conceptions of the mind lead to different responses to this problem; when understood in a very wide sense as the capacity to process information, the mind is present in all forms of life, including insects, plants, and individual cells; on
9805-528: Is controversial whether computers can, in principle, implement them, such as desires, feelings, consciousness, and free will. This problem is often discussed through the contrast between weak and strong artificial intelligence. Weak or narrow artificial intelligence is limited to specific mental capacities or functions. It focuses on a particular task or a narrow set of tasks, like autonomous driving , speech recognition , or theorem proving . The goal of strong AI, also termed artificial general intelligence ,
9990-519: Is difficult to directly examine, manipulate, and measure it. Trying to circumvent this problem by investigating the brain comes with new challenges of its own, mainly because of the brain's complexity as a neural network consisting of billions of neurons, each with up to 10,000 links to other neurons. Psychology is the scientific study of mind and behavior. It investigates conscious and unconscious mental phenomena, including perception, memory, feeling, thought, decision, intelligence , and personality . It
10175-427: Is further interested in their outward manifestation in the form of observable behavioral patterns and how these patterns depend on external circumstances and are shaped by learning. Psychology is a wide discipline that includes many subfields. Cognitive psychology is interested in higher-order mental activities like thinking, problem-solving, reasoning, and concept formation. Biological psychology seeks to understand
10360-574: Is important, and differs from the sum of its parts. Psychologists in Germany, Denmark, Austria, England, and the United States soon followed Wundt in setting up laboratories. G. Stanley Hall , an American who studied with Wundt, founded a psychology lab that became internationally influential. The lab was located at Johns Hopkins University . Hall, in turn, trained Yujiro Motora , who brought experimental psychology, emphasizing psychophysics, to
10545-410: Is not an objective science. Skeptics have suggested that personality, thinking, and emotion cannot be directly measured and are often inferred from subjective self-reports, which may be problematic. Experimental psychologists have devised a variety of ways to indirectly measure these elusive phenomenological entities. Divisions still exist within the field, with some psychologists more oriented towards
10730-409: Is relevant to learning, which is the ability of the mind to acquire new information and permanently modify its understanding and behavioral patterns. Individuals learn by undergoing experiences, which helps them adapt to the environment. An influential distinction is between conscious and unconscious mental processes. Consciousness is the awareness of external and internal circumstances. It encompasses
10915-506: Is that a large part of both human and lower-animal behavior is learned. A principle associated with behavioral research is that the mechanisms involved in learning apply to humans and non-human animals. Behavioral researchers have developed a treatment known as behavior modification , which is used to help individuals replace undesirable behaviors with desirable ones. Early behavioral researchers studied stimulus–response pairings, now known as classical conditioning . They demonstrated that when
11100-412: Is the mark of the mental. A state is intentional if it refers to or represents something. For example, if a person perceives a piano or thinks about it then the mental state is intentional because it refers to a piano. This view distinguishes between original and derivative intentionality. Mental states have original intentionality while some non-mental phenomena have derivative intentionality. For instance,
11285-440: Is the process of interpreting and organizing sensory information to become acquainted with the environment. This information is acquired through sense organs receptive to various types of physical stimuli , which correspond to different forms of perception, such as vision , hearing , touch , smell , and taste . The sensory information received this way is a form of raw data that is filtered and processed to actively construct
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#173276595978511470-470: Is the totality of psychological phenomena and capacities, encompassing consciousness , thought , perception , feeling , mood , motivation , behavior , memory , and learning . The term is sometimes used in a more narrow sense to refer only to higher or more abstract cognitive functions associated with reasoning and awareness . Minds were traditionally conceived as immaterial substances or independent entities and contrasted with matter and body . In
11655-528: Is to create a complete artificial person that has all the mental capacities of humans, including consciousness, emotion, and reason. It is controversial whether strong AI is possible; influential arguments against it include John Searle 's Chinese Room Argument and Hubert Dreyfus 's critique based on Heideggerian philosophy. Mental health is a state of mind characterized by internal equilibrium and well-being in which mental capacities function as they should. Some theorists emphasize positive features such as
11840-475: The Upanishads and other Vedic texts that formed the foundations of Hinduism was the distinction between a person's transient mundane self and their eternal, unchanging soul . Divergent Hindu doctrines and Buddhism have challenged this hierarchy of selves, but have all emphasized the importance of reaching higher awareness. Yoga encompasses a range of techniques used in pursuit of this goal. Theosophy ,
12025-593: The Volk and the Gemeinschaft ." Psychologists were to provide Seelenführung [lit., soul guidance], the leadership of the mind, to integrate people into the new vision of a German community. Harald Schultz-Hencke melded psychology with the Nazi theory of biology and racial origins, criticizing psychoanalysis as a study of the weak and deformed. Johannes Heinrich Schultz , a German psychologist recognized for developing
12210-526: The Ebers Papyrus mentioned depression and thought disorders. Historians note that Greek philosophers, including Thales , Plato , and Aristotle (especially in his De Anima treatise), addressed the workings of the mind. As early as the 4th century BC, the Greek physician Hippocrates theorized that mental disorders had physical rather than supernatural causes. In 387 BCE, Plato suggested that
12395-522: The Imperial University of Tokyo . Wundt's assistant, Hugo Münsterberg , taught psychology at Harvard to students such as Narendra Nath Sen Gupta —who, in 1905, founded a psychology department and laboratory at the University of Calcutta . Wundt's students Walter Dill Scott , Lightner Witmer , and James McKeen Cattell worked on developing tests of mental ability. Cattell, who also studied with eugenicist Francis Galton , went on to found
12580-579: The International Journal of Psychology . IAAP and IUPsyS agreed in 1976 each to hold a congress every four years, on a staggered basis. IUPsyS recognizes 66 national psychology associations and at least 15 others exist. The American Psychological Association is the oldest and largest. Its membership has increased from 5,000 in 1945 to 100,000 in the present day. The APA includes 54 divisions , which since 1960 have steadily proliferated to include more specialties. Some of these divisions, such as
12765-599: The Khrushchev Thaw . The topics of cybernetics, linguistics, and genetics became acceptable again. The new field of engineering psychology emerged. The field involved the study of the mental aspects of complex jobs (such as pilot and cosmonaut). Interdisciplinary studies became popular and scholars such as Georgy Shchedrovitsky developed systems theory approaches to human behavior. Twentieth-century Chinese psychology originally modeled itself on U.S. psychology, with translations from American authors like William James,
12950-867: The Middle English words mind(e) , münd(e) , and mend(e) , resulting in a slow expansion of meaning to cover all mental capacities. The original meaning is preserved in expressions like call to mind and keep in mind . Cognates include the Old High German gimunt , the Gothic gamunds , the ancient Greek μένος , the Latin mens , and the Sanskrit manas . The mind encompasses many phenomena, including perception , memory , thought , imagination , motivation , emotion , attention , learning , and consciousness . Perception
13135-626: The Psychological Corporation . Witmer focused on the mental testing of children; Scott, on employee selection. Another student of Wundt, the Englishman Edward Titchener , created the psychology program at Cornell University and advanced " structuralist " psychology. The idea behind structuralism was to analyze and classify different aspects of the mind, primarily through the method of introspection . William James, John Dewey , and Harvey Carr advanced
13320-803: The Society for the Psychological Study of Social Issues and the American Psychology–Law Society , began as autonomous groups. The Interamerican Psychological Society , founded in 1951, aspires to promote psychology across the Western Hemisphere. It holds the Interamerican Congress of Psychology and had 1,000 members in year 2000. The European Federation of Professional Psychology Associations, founded in 1981, represents 30 national associations with
13505-579: The Weber–Fechner law . Fechner's 1860 Elements of Psychophysics challenged Kant's negative view with regard to conducting quantitative research on the mind. Fechner's achievement was to show that "mental processes could not only be given numerical magnitudes, but also that these could be measured by experimental methods." In Heidelberg, Hermann von Helmholtz conducted parallel research on sensory perception, and trained physiologist Wilhelm Wundt . Wundt, in turn, came to Leipzig University, where he established
13690-478: The emergent properties of brains, linking the discipline to neuroscience . As social scientists, psychologists aim to understand the behavior of individuals and groups. A professional practitioner or researcher involved in the discipline is called a psychologist . Some psychologists can also be classified as behavioral or cognitive scientists . Some psychologists attempt to understand the role of mental functions in individual and social behavior . Others explore
13875-472: The history of philosophy was between the faculties of intellect and will . The intellect encompasses mental phenomena aimed at understanding the world and determining what to believe or what is true; the will is concerned with practical matters and what is good, reflected in phenomena like desire, decision-making, and action. The exact number and nature of the mental faculties are disputed and more fine-grained subdivisions have been proposed, such as dividing
14060-469: The physiological and neurobiological processes that underlie cognitive functions and behaviors. Psychologists are involved in research on perception , cognition , attention , emotion , intelligence , subjective experiences , motivation , brain functioning , and personality . Psychologists' interests extend to interpersonal relationships , psychological resilience , family resilience , and other areas within social psychology . They also consider
14245-433: The societal norms and roles they are assigned. As she states in her article, "Variability as related to sex differences in achievement: A Critique", the largest problem women have is the social order that was built due to the assumption women have less interests and abilities than men. To further prove her point, she completed another experiment with infants who have not been influenced by the environment of social norms, like
14430-427: The visual and the auditory areas . A central function of the hippocampus is the formation and retrieval of long-term memories. It belongs to the limbic system , which plays a key role in the regulation of emotions through the amygdala . The motor cortex is responsible for planning, executing, and controlling voluntary movements. Broca's area is a separate region dedicated to speech production . The activity of
14615-457: The "mark of the mental", that is, the criteria that distinguish mental from non-mental phenomena. Epistemic criteria say that the unique feature of mental states is how people know about them. For example, if a person has a toothache, they have direct or non-inferential knowledge that they are in pain. But they do not have this kind of knowledge of the physical causes of the pain and may have to consult external evidence through visual inspection or
14800-507: The 1870s, when in France Paul Broca traced production of speech to the left frontal gyrus, thereby also demonstrating hemispheric lateralization of brain function. Soon after, Carl Wernicke identified a related area necessary for the understanding of speech. The contemporary field of behavioral neuroscience focuses on the physical basis of behavior. Behaviorial neuroscientists use animal models, often relying on rats, to study
14985-469: The 1940s. These tests, called the doll tests , asked young children to choose between identical dolls whose only difference was race, and they found that the majority of the children preferred the white dolls and attributed positive traits to them. Repeated over and over again, these tests helped to determine the negative effects of racial discrimination and segregation on black children's self-image and development. In 1954, this research would help decide
15170-706: The 1950s, the Rockefeller Foundation and Ford Foundation collaborated with the Central Intelligence Agency (CIA) to fund research on psychological warfare . In 1965, public controversy called attention to the Army's Project Camelot , the "Manhattan Project" of social science , an effort which enlisted psychologists and anthropologists to analyze the plans and policies of foreign countries for strategic purposes. In Germany after World War I, psychology held institutional power through
15355-637: The 20th century further diversified the field of psychology, with women of color reaching new milestones. In 1962, Martha Bernal became the first Latina woman to get a Ph.D. in psychology. In 1969, Marigold Linton , the first Native American woman to get a Ph.D. in psychology, founded the National Indian Education Association . She was also a founding member of the Society for Advancement of Chicanos and Native Americans in Science . In 1971, The Network of Indian Psychologists
15540-470: The APA's Distinguished Career Contribution to Research Award from the Society for the Psychological Study of Culture Ethnicity, and Race for her research on suicide prevention . She was the first person to lead an intervention for Native American children and adolescents that utilized evidence-based suicide prevention. She has spent her career dedicated to aiding racial and ethnic minority youth cope with cultural adjustment and pressures. Dr. Shari Miles-Cohen,
15725-653: The Bureau of Social Hygiene and later funding of Alfred Kinsey , Rockefeller foundations helped establish research on sexuality in the U.S. Under the influence of the Carnegie-funded Eugenics Record Office , the Draper-funded Pioneer Fund , and other institutions, the eugenics movement also influenced American psychology. In the 1910s and 1920s, eugenics became a standard topic in psychology classes. In contrast to
15910-516: The Greek word psyche , for spirit or soul . The latter part of the word psychology derives from -λογία -logia , which means "study" or "research". The word psychology was first used in the Renaissance. In its Latin form psychiologia , it was first employed by the Croatian humanist and Latinist Marko Marulić in his book Psichiologia de ratione animae humanae ( Psychology, on
16095-546: The Institute of Psychology. Because most leading psychologists were educated in the United States, the first concern of the academy was the re-education of these psychologists in the Soviet doctrines. Child psychology and pedagogy for the purpose of a nationally cohesive education remained a central goal of the discipline. Women in the early 1900s started to make key findings within the world of psychology. In 1923, Anna Freud ,
16280-764: The Nature of the Human Soul ) in the decade 1510–1520 The earliest known reference to the word psychology in English was by Steven Blankaart in 1694 in The Physical Dictionary . The dictionary refers to " Anatomy , which treats the Body, and Psychology, which treats of the Soul." Ψ ( psi ) , the first letter of the Greek word psyche from which the term psychology is derived, is commonly associated with
16465-467: The Prussian state established psychology as a mandatory discipline in its rapidly expanding and highly influential educational system . However, this discipline did not yet embrace experimentation. In England, early psychology involved phrenology and the response to social problems including alcoholism, violence, and the country's crowded "lunatic" asylums. Philosopher John Stuart Mill believed that
16650-632: The Rockefeller Foundation, Mitscherlich established the first clinical psychosomatic medicine division at Heidelberg University. In 1970, psychology was integrated into the required studies of medical students. After the Russian Revolution , the Bolsheviks promoted psychology as a way to engineer the "New Man" of socialism. Consequently, university psychology departments trained large numbers of students in psychology. At
16835-488: The Soviet Union and inspired followers to use his methods on humans. In the United States, Edward Lee Thorndike initiated " connectionist " studies by trapping animals in "puzzle boxes" and rewarding them for escaping. Thorndike wrote in 1911, "There can be no moral warrant for studying man's nature unless the study will enable us to control his acts." From 1910 to 1913 the American Psychological Association went through
17020-431: The Soviet Union. Stalinist purges took a heavy toll and instilled a climate of fear in the profession, as elsewhere in Soviet society. Following World War II, Jewish psychologists past and present, including Lev Vygotsky , A.R. Luria , and Aron Zalkind, were denounced; Ivan Pavlov (posthumously) and Stalin himself were celebrated as heroes of Soviet psychology. Soviet academics experienced a degree of liberalization during
17205-714: The U.S.'s entry into World War I. A standing committee headed by Robert Yerkes administered mental tests (" Army Alpha " and " Army Beta ") to almost 1.8 million soldiers. Subsequently, the Rockefeller family , via the Social Science Research Council , began to provide funding for behavioral research. Rockefeller charities funded the National Committee on Mental Hygiene, which disseminated the concept of mental illness and lobbied for applying ideas from psychology to child rearing. Through
17390-867: The US, in the UK psychology was met with antagonism by the scientific and medical establishments, and up until 1939, there were only six psychology chairs in universities in England. During World War II and the Cold War, the U.S. military and intelligence agencies established themselves as leading funders of psychology by way of the armed forces and in the new Office of Strategic Services intelligence agency. University of Michigan psychologist Dorwin Cartwright reported that university researchers began large-scale propaganda research in 1939–1941. He observed that "the last few months of
17575-700: The World's Fair celebrating the centennial of the French Revolution. William James was one of three Americans among the 400 attendees. The American Psychological Association (APA) was founded soon after, in 1892. The International Congress continued to be held at different locations in Europe and with wide international participation. The Sixth Congress, held in Geneva in 1909, included presentations in Russian, Chinese, and Japanese, as well as Esperanto . After
17760-419: The abilities of a person to realize their potential, express and modulate emotions, cope with adverse life situations, and fulfill their social role. Negative definitions, by contrast, see mental health as the absence of mental illness in the form of mental disorders . Mental disorders are abnormal patterns of thought, emotion, or behavior that deviate not only from how a mental capacity works on average but from
17945-598: The accomplishments of women of color in psychology. She is well known for co-editing Eliminating Inequities for Women with Disabilities: An Agenda for Health and Wellness (published in 2016), her article published in the Women's Reproductive Health Journal about women of color's struggle with pregnancy and postpartum (Published in 2018), and co-authoring the "APA Handbook of the Psychology of Women" (published in 2019). In 1920, Édouard Claparède and Pierre Bovet created
18130-405: The adult male getting more opportunities than women. She found no difference between infants besides size. After this research proved the original hypothesis wrong, Hollingworth was able to show there is no difference between the physiological and psychological traits of men and women, and women are not impaired during menstruation . The first half of the 1900s was filled with new theories and it
18315-618: The application of biological principles to the study of physiological and genetic mechanisms underlying behavior in humans and other animals. The allied field of comparative psychology is the scientific study of the behavior and mental processes of non-human animals. A leading question in behavioral neuroscience has been whether and how mental functions are localized in the brain . From Phineas Gage to H.M. and Clive Wearing , individual people with mental deficits traceable to physical brain damage have inspired new discoveries in this area. Modern behavioral neuroscience could be said to originate in
18500-541: The belief women are mentally and physically impaired during menstruation , impacted women's rights because employers were less likely to hire them due to the belief they would be incapable of working for 1 week a month. Leta Stetter Hollingworth wanted to prove this hypothesis and Edward L. Thorndike's theory, that women have lesser psychological and physical traits than men and were simply mediocre, incorrect. Hollingworth worked to prove differences were not from male genetic superiority, but from culture. She also included
18685-572: The brain advanced during the Qing dynasty with the work of Western-educated Fang Yizhi (1611–1671), Liu Zhi (1660–1730), and Wang Qingren (1768–1831). Wang Qingren emphasized the importance of the brain as the center of the nervous system, linked mental disorder with brain diseases, investigated the causes of dreams and insomnia , and advanced a theory of hemispheric lateralization in brain function. Influenced by Hinduism , Indian philosophy explored distinctions in types of awareness. A central idea of
18870-429: The brain chemistry involved in the disorder through substances like antidepressants , antipsychotics , mood stabilizers , and anxiolytics . Various fields of inquiry study the mind, including psychology, neuroscience, philosophy, and cognitive science. They differ from each other in the aspects of mind they investigate and the methods they employ in the process. The study of the mind poses various problems since it
19055-399: The brain is where mental processes take place, and in 335 BCE Aristotle suggested that it was the heart. In China, psychological understanding grew from the philosophical works of Laozi and Confucius , and later from the doctrines of Buddhism . This body of knowledge involves insights drawn from introspection and observation, as well as techniques for focused thinking and acting. It frames
19240-436: The cognitive level, maladaptive beliefs and patterns of thought can be responsible. Environmental factors involve cultural influences and social events that may trigger the onset of a disorder. There are various approaches to treating mental disorders, and the most suitable treatment usually depends on the type of disorder, its cause, and the individual's overall condition. Psychotherapeutic methods use personal interaction with
19425-545: The completion of training, positions were made available for those students at schools, workplaces, cultural institutions, and in the military. The Russian state emphasized pedology and the study of child development. Lev Vygotsky became prominent in the field of child development. The Bolsheviks also promoted free love and embraced the doctrine of psychoanalysis as an antidote to sexual repression. Although pedology and intelligence testing fell out of favor in 1936, psychology maintained its privileged position as an instrument of
19610-484: The concept of mental modules is normally used to provide a more limited explanation restricted to certain low-level cognitive processes without trying to explain how they are integrated into higher-level processes such as conscious reasoning. Many low-level cognitive processes responsible for visual perception have this automatic and unconscious nature. In the case of visual illusions like the Müller-Lyer illusion ,
19795-431: The concept of women's impairment during menstruation in her research. She recorded both women and men performances on tasks (cognitive, perceptual, and motor) for three months. No evidence was found of decreased performance due to a woman's menstrual cycle. She also challenged the belief intelligence is inherited and women here are intellectually inferior to men. She stated that women do not reach positions of power due to
19980-483: The consumption of psychoactive drugs , like caffeine, antidepressants , alcohol, and psychedelics , temporarily affects brain chemistry with diverse effects on the mind, ranging from increased attention to mood changes, impaired cognitive functions, and hallucinations . Long-term changes to the brain in the form of neurodegenerative diseases and brain injuries can lead to permanent alterations in mental functions. Alzheimer's disease in its first stage deteriorates
20165-438: The contemporary discourse, they are more commonly seen as features of other entities and are often understood as capacities of material brains. The precise definition of mind is disputed and while it is generally accepted that some non-human animals also have mind, there is no agreement on where exactly the boundary lies. Despite these disputes, there is wide agreement that mind plays a central role in most aspects of human life as
20350-418: The contemporary discourse. The mind plays a central role in most aspects of human life but its exact nature is disputed. Some characterizations focus on internal aspects, saying that the mind is private and transforms information. Others stress its relation to outward conduct, understanding mental phenomena as dispositions to engage in observable behavior. The mind–body problem is the challenge of explaining
20535-405: The daughter of Sigmund Freud , built on her father's work using different defense mechanisms (denial, repression, and suppression) to psychoanalyze children. She believed that once a child reached the latency period , child analysis could be used as a mode of therapy . She stated it is important focus on the child's environment, support their development, and prevent neurosis . She believed
20720-431: The development of mind before birth, such as nutrition, maternal stress, and exposure to harmful substances like alcohol during pregnancy. Early childhood is marked by rapid developments as infants learn voluntary control over their bodies and interact with their environment on a basic level. Typically after about one year, this covers abilities like walking, recognizing familiar faces, and producing individual words. On
20905-451: The difference between conscious and unconscious awareness is only a matter of degree. Christian Wolff identified psychology as its own science, writing Psychologia Empirica in 1732 and Psychologia Rationalis in 1734. Immanuel Kant advanced the idea of anthropology as a discipline, with psychology an important subdivision. Kant, however, explicitly rejected the idea of an experimental psychology , writing that "the empirical doctrine of
21090-419: The different areas is additionally influenced by neurotransmitters , which are signaling molecules that enhance or inhibit different types of neural communication. For example, dopamine influences motivation and pleasure while serotonin affects mood and appetite. The close interrelation of brain processes and the mind is seen by the effect that physical changes of the brain have on the mind. For instance,
21275-460: The domain of rational evaluation are arational rather than irrational. There is controversy regarding which mental phenomena lie outside this domain; suggested examples include sensory impressions, feelings, desires, and involuntary responses. Another contrast is between dispositional and occurrent mental states. A dispositional state is a power that is not exercised. If a person believes that cats have whiskers but does not think about this fact, it
21460-489: The earliest forms of life 4 to 3.5 billion years ago, like the abilities of bacteria and eukaryotic unicellular organisms to sense the environment, store this information, and react to it. Nerve cells emerged with the development of multicellular organisms more than 600 million years ago as a way to process and transmit information. About 600 to 550 million years ago, an evolutionary bifurcation happened into radially symmetric organisms with ring-shaped nervous systems or
21645-465: The early 20th century, Wolfgang Kohler , Max Wertheimer , and Kurt Koffka co-founded the school of Gestalt psychology of Fritz Perls . The approach of Gestalt psychology is based upon the idea that individuals experience things as unified wholes. Rather than reducing thoughts and behavior into smaller component elements, as in structuralism, the Gestaltists maintained that whole of experience
21830-445: The emotional and social levels, they develop attachments with their primary caretakers and express emotions ranging from joy to anger, fear, and surprise. An influential theory by Jean Piaget divides the cognitive development of children into four stages. The sensorimotor stage from birth until two years is concerned with sensory impressions and motor activities while learning that objects remain in existence even when not observed. In
22015-406: The environment. According to this view, mental states and their contents are at least partially determined by external circumstances. For example, some forms of content externalism hold that it can depend on external circumstances whether a belief refers to one object or another. The extended mind thesis states that external circumstances not only affect the mind but are part of it, like a diary or
22200-612: The establishment of university psychology departments and journals, and the establishment of groups including the Chinese Association of Psychological Testing (1930) and the Chinese Psychological Society (1937). Chinese psychologists were encouraged to focus on education and language learning. Chinese psychologists were drawn to the idea that education would enable modernization. John Dewey, who lectured to Chinese audiences between 1919 and 1921, had
22385-423: The evolution of vertebrates, their brains tended to grow and the specialization of the different brain areas tended to increase. These developments are closely related to changes in limb structures, sense organs, and living conditions with a close correspondence between the size of a brain area and the importance of its function to the organism. An important step in the evolution of mammals about 200 million years ago
22570-472: The evolutionary processes responsible for human intelligence have been proposed. The social intelligence hypothesis says that the evolution of the human mind was triggered by the increased importance of social life and its emphasis on mental abilities associated with empathy , knowledge transfer , and meta-cognition . According to the ecological intelligence hypothesis, the main value of the increased mental capacities comes from their advantages in dealing with
22755-402: The field of psychology. In 1890, William James defined psychology as "the science of mental life, both of its phenomena and their conditions." This definition enjoyed widespread currency for decades. However, this meaning was contested, notably by radical behaviorists such as John B. Watson , who in 1913 asserted that the discipline is a natural science , the theoretical goal of which "is
22940-741: The field, female psychologists in the U.S. formed the National Council of Women Psychologists in 1941. This organization became the International Council of Women Psychologists after World War II and the International Council of Psychologists in 1959. Several associations including the Association of Black Psychologists and the Asian American Psychological Association have arisen to promote the inclusion of non-European racial groups in
23125-404: The forebrain. The primary operation of many of the main mental phenomena is located in specific areas of the forebrain. The prefrontal cortex is responsible for executive functions , such as planning, decision-making, problem-solving, and working memory. The role of the sensory cortex is to process and interpret sensory information, with different subareas dedicated to different senses, like
23310-423: The functional role of pain is given by its relation to bodily injury and its tendency to cause behavioral patterns like moaning and other mental states, like a desire to stop the pain. Computationalism , a similar theory prominent in cognitive science, defines minds in terms of cognitions and computations as information processors. Theories under the umbrella of externalism emphasize the mind's dependency on
23495-643: The hippocampus, reducing the ability to form new memories and recall existing ones. An often-cited case of the effects of brain injury is Phineas Gage , whose prefrontal cortex was severely damaged during a work accident when an iron rod pierced through his skull and brain. Gage survived the accident but his personality and social attitude changed significantly as he became more impulsive, irritable, and anti-social while showing little regard for social conventions and an impaired ability to plan and make rational decisions. Not all these changes were permanent and Gage managed to recover and adapt in some areas. The mind has
23680-499: The human mind was open to scientific investigation, even if the science is in some ways inexact. Mill proposed a "mental chemistry " in which elementary thoughts could combine into ideas of greater complexity. Gustav Fechner began conducting psychophysics research in Leipzig in the 1830s. He articulated the principle that human perception of a stimulus varies logarithmically according to its intensity. The principle became known as
23865-659: The idea of functionalism , an expansive approach to psychology that underlined the Darwinian idea of a behavior's usefulness to the individual. In 1890, James wrote an influential book, The Principles of Psychology , which expanded on the structuralism. He memorably described " stream of consciousness ." James's ideas interested many American students in the emerging discipline. Dewey integrated psychology with societal concerns, most notably by promoting progressive education , inculcating moral values in children, and assimilating immigrants. A different strain of experimentalism, with
24050-482: The increased human mental capacities as a matter of degree rather than kind. Central considerations for this position are the shared evolutionary origin, organic similarities on the level of brain and nervous system, and observable behavior, ranging from problem-solving skills, animal communication , and reactions to and expressions of pain and pleasure. Of particular importance are the questions of consciousness and sentience , that is, to what extent non-human animals have
24235-500: The individual changes vary from person to person as a form of learning from experience, like forming specific memories or acquiring particular behavioral patterns. Others are more universal developments as psychological stages that all or most humans go through as they pass through early childhood , adolescence , adulthood , and old age . These developments cover various areas, including intellectual, sensorimotor, linguistic, emotional, social, and moral developments. Some factors affect
24420-450: The individual. Psychoanalytic theory studies symptoms caused by this process and therapeutic methods to avoid them by making the repressed thoughts accessible to conscious awareness. Mental states are often divided into sensory and propositional states. Sensory states are experiences of sensory qualities, often referred to as qualia , like colors, sounds, smells, pains, itches, and hunger. Propositional states involve an attitude towards
24605-492: The information stored in a memory may be accessible when drawing conclusions or guiding actions even when the person is not explicitly thinking about it. Unconscious or nonconscious mental processes operate without the individual's awareness but can still influence mental phenomena on the level of thought, feeling, and action. Some theorists distinguish between preconscious, subconscious, and unconscious states depending on their accessibility to conscious awareness. When applied to
24790-469: The intellect into the faculties of understanding and judgment or adding sensibility as an additional faculty responsible for sensory impressions. In contrast to the traditional view, more recent approaches analyze the mind in terms of mental modules rather than faculties. A mental module is an inborn system of the brain that automatically performs a particular function within a specific domain without conscious awareness or effort. In contrast to faculties,
24975-482: The landmark Brown v. Board of Education decision, leading to the end of legal segregation across the nation. Clark went on to be an influential figure in psychology, her work continuing to focus on minority youth. As the field of psychology developed throughout the latter half of the 20th century, women in the field advocated for their voices to be heard and their perspectives to be valued. Second-wave feminism did not miss psychology. An outspoken feminist in psychology
25160-417: The late nineteenth century enjoyed popularity (including the interest of scholars such as William James). Some people considered parapsychology to be part of "psychology". Parapsychology, hypnotism , and psychism were major topics at the early International Congresses. But students of these fields were eventually ostracized, and more or less banished from the Congress in 1900–1905. Parapsychology persisted for
25345-399: The major influence, with Marxism–Leninism the leading social doctrine and Pavlovian conditioning the approved means of behavior change. Chinese psychologists elaborated on Lenin's model of a "reflective" consciousness, envisioning an "active consciousness" ( pinyin : tzu-chueh neng-tung-li ) able to transcend material conditions through hard work and ideological struggle. They developed
25530-773: The military, which was subsequently expanded along with the rest of the military during Nazi Germany . Under the direction of Hermann Göring 's cousin Matthias Göring , the Berlin Psychoanalytic Institute was renamed the Göring Institute. Freudian psychoanalysts were expelled and persecuted under the anti-Jewish policies of the Nazi Party , and all psychologists had to distance themselves from Freud and Adler , founders of psychoanalysis who were also Jewish. The Göring Institute
25715-413: The mind include psychology , neuroscience , cognitive science , and philosophy . They tend to focus on different aspects of the mind and employ different methods of investigation, ranging from empirical observation and neuroimaging to conceptual analysis and thought experiments . The mind is relevant to many other fields, including epistemology , anthropology , religion, and education. The mind
25900-403: The minds of non-human animals are fundamentally different from human minds and often point to higher mental faculties, like thinking, reasoning, and decision-making based on beliefs and desires. This outlook is reflected in the traditionally influential position of defining humans as " rational animals " as opposed to all other animals. Continuity views, by contrast, emphasize similarities and see
26085-553: The motives of others without rational basis. Psychotic disorders are among the most severe mental illnesses and involve a distorted relation to reality in the form of hallucinations and delusions , as seen in schizophrenia . Other disorders include dissociative disorders and eating disorders . The biopsychosocial model identifies three types of causes of mental disorders: biological, cognitive, and environmental factors. Biological factors include bodily causes, in particular neurological influences and genetic predispositions. On
26270-410: The mystical writer Antoinette Bourignon . He argued in one letter that an earthly paradise would be created if there were a prohibition of alcohol. He collaborated with Maria Sibylla Merian on the publication of her work. In 1682, he had married Isabella de Carpentier, the daughter of a referent from Amersfoort, and in 1683, they had one child. At that time he lived on Warmoesstraat . Blankaart
26455-432: The need for special sciences like psychology. For example, behaviorists aim to analyze mental concepts in terms of observable behavior without resorting to internal mental states. Type identity theory also belongs to reductive physicalism and says that mental states are the same as brain states. While non-reductive physicalists agree that everything is physical, they say that mental concepts describe physical reality on
26640-414: The neural, genetic, and cellular mechanisms that underlie behaviors involved in learning, memory, and fear responses. Cognitive neuroscientists , by using neural imaging tools, investigate the neural correlates of psychological processes in humans. Neuropsychologists conduct psychological assessments to determine how an individual's behavior and cognition are related to the brain. The biopsychosocial model
26825-405: The norm of how it should work while usually causing some form of distress . The content of those norms is controversial and there are differences from culture to culture; for example, homosexuality was historically considered a mental disorder by medical professionals, a view which only changed in the second half of 20th century. There is a great variety of mental disorders, each associated with
27010-408: The other side of the spectrum are views that deny the existence of mentality in most or all non-human animals based on the idea that they lack key mental capacities, like abstract rationality and symbolic language. The status of animal minds is highly relevant to the field of ethics since it affects the treatment of animals, including the topic of animal rights . Discontinuity views state that
27195-558: The overall state of a person rather than specific processes, the term unconscious implies that the person lacks any awareness of their environment and themselves, like during a coma . The unconscious mind plays a central role in psychoanalysis as the part of the mind that contains thoughts, memories, and desires not accessible to conscious introspection. According to Sigmund Freud , the psychological mechanism of repression keeps disturbing phenomena, like unacceptable sexual and aggressive impulses, from entering consciousness to protect
27380-582: The person tries to alleviate by following compulsive rituals . Mood disorders cause intensive moods or mood swings that are inconsistent with the external circumstances and can last for extensive periods. For instance, people affected by bipolar disorder experience extreme mood swings between manic states of euphoria and depressive states of hopelessness. Personality disorders are characterized by enduring patterns of maladaptive behavior that significantly impair regular life, like paranoid personality disorder , which leads people to be deeply suspicious of
27565-449: The prediction and control of behavior." Since James defined "psychology", the term more strongly implicates scientific experimentation. Folk psychology is the understanding of the mental states and behaviors of people held by ordinary people , as contrasted with psychology professionals' understanding. The ancient civilizations of Egypt, Greece, China, India, and Persia all engaged in the philosophical study of psychology. In Ancient Egypt
27750-518: The preoperational stage until seven years, children learn to interpret and use symbols in an intuitive manner. They start employing logical reasoning to physical objects in the concrete operational stage until eleven years and extend this capacity in the following formal operational stage to abstract ideas as well as probabilities and possibilities. Other important processes shaping the mind in this period are socialization and enculturation , at first through primary caretakers and later through peers and
27935-435: The present. When a person remembers what they had for dinner yesterday, they employ episodic memory. Semantic memory handles general knowledge about the world that is not tied to any specific episodes. When a person recalls that the capital of Japan is Tokyo, they usually access this general information without recalling the specific instance when they learned it. Procedural memory is memory of how to do things, such as riding
28120-475: The principles established by René Descartes and was one of the first physicians to be a scientist or empiricist . In order to disprove the theory that insects originated spontaneously from filth and to demonstrate that they developed from eggs, Blankaart repeated the experiments carried out by Francesco Redi . Blankaart used oil made from turpentine to save the insects from mites , and mentioned it in his book Schou-burg from 1688. Blankaart corresponded with
28305-456: The process of aging. Some people are affected by mental disorders , for which certain mental capacities do not function as they should. It is widely accepted that non-human animals have some form of mind, but it is controversial to which animals this applies. The topic of artificial minds poses similar challenges, with theorists discussing the possibility and consequences of creating them using computers. The main fields of inquiry studying
28490-611: The profession. The International Union of Psychological Science (IUPsyS) is the world federation of national psychological societies. The IUPsyS was founded in 1951 under the auspices of the United Nations Educational, Cultural and Scientific Organization (UNESCO) . Psychology departments have since proliferated around the world, based primarily on the Euro-American model. Since 1966, the Union has published
28675-492: The psychological laboratory that brought experimental psychology to the world. Wundt focused on breaking down mental processes into the most basic components, motivated in part by an analogy to recent advances in chemistry, and its successful investigation of the elements and structure of materials. Paul Flechsig and Emil Kraepelin soon created another influential laboratory at Leipzig, a psychology-related lab, that focused more on experimental psychiatry. James McKeen Cattell ,
28860-587: The relation between matter and mind. The dominant position today is physicalism , which says that everything is material, meaning that minds are certain aspects or features of some material objects. The evolutionary history of the mind is tied to the development of the nervous system , which led to the formation of brains. As brains became more complex, the number and capacity of mental functions increased with particular brain areas dedicated to specific mental functions. Individual human minds also develop as they learn from experience and pass through psychological stages in
29045-456: The relation between mind and matter uses empirical observation to study how the brain works and which brain areas and processes are associated with specific mental phenomena. The brain is the central organ of the nervous system and is present in all vertebrates and the majority of invertebrates . The human brain is of particular complexity and consists of about 86 billion neurons , which communicate with one another via synapses . They form
29230-512: The results of natural selection or sexual selection over the course of human evolution. The history of the biological foundations of psychology includes evidence of racism. The idea of white supremacy and indeed the modern concept of race itself arose during the process of world conquest by Europeans. Carl von Linnaeus 's four-fold classification of humans classifies Europeans as intelligent and severe, Americans as contented and free, Asians as ritualistic, and Africans as lazy and capricious. Race
29415-513: The same individual. Monist views, by contrast, state that reality is made up of only one kind. According to idealists , everything is mental. They understand material things as mental constructs, for example, as ideas or perceptions. According to neutral monists , the world is at its most fundamental level neither physical nor mental but neutral. They see physical and mental concepts as convenient but superficial ways to describe reality. The monist view most influential in contemporary philosophy
29600-418: The same time seeking closeness and conformity with friends and peers. Further developments in this period include improvements to the reasoning ability and the formation of a principled moral viewpoint. The mind also changes during adulthood but in a less rapid and pronounced manner. Reasoning and problem-solving skills improve during early and middle adulthood. Some people experience the mid-life transition as
29785-460: The same. Some religions understand the soul as an independent entity that constitutes the immaterial essence of human beings, is of divine origin, survives bodily death, and is immortal . The word spirit has various additional meanings not directly associated with mind, such as a vital principle animating living beings or a supernatural being inhabiting objects or places. Cognition encompasses certain types of mental processes in which knowledge
29970-406: The schooling system. Psychological changes during adolescence are provoked both by physiological changes and being confronted with a different social situation and new expectations from others. An important factor in this period is change to the self-concept , which can take the form of an identity crisis . This process often involves developing individuality and independence from parents while at
30155-469: The seat of consciousness, emotions, thoughts, and sense of personal identity. Various fields of inquiry study the mind; the main ones include psychology , cognitive science , neuroscience , and philosophy . The words psyche and mentality are usually used as synonyms of mind . They are often employed in overlapping ways with the terms soul , spirit , cognition , intellect , intelligence , and brain but their meanings are not exactly
30340-492: The second half of the 20th century continued to do research that had large-scale impacts on the field of psychology. Mary Ainsworth 's work centered around attachment theory . Building off fellow psychologist John Bowlby , Ainsworth spent years doing fieldwork to understand the development of mother-infant relationships. In doing this field research, Ainsworth developed the Strange Situation Procedure,
30525-424: The soul can also never approach chemistry even as a systematic art of analysis or experimental doctrine, for in it the manifold of inner observation can be separated only by mere division in thought, and cannot then be held separate and recombined at will (but still less does another thinking subject suffer himself to be experimented upon to suit our purpose), and even observation by itself already changes and displaces
30710-414: The stage for further research to be done in social psychology , especially in gender construction . Other women in the field also continued advocating for women in psychology, creating the Association for Women in Psychology to criticize how the field treated women. E. Kitsch Child , Phyllis Chesler , and Dorothy Riddle were some of the founding members of the organization in 1969. The latter half of
30895-619: The state of the observed object." In 1783, Ferdinand Ueberwasser (1752–1812) designated himself Professor of Empirical Psychology and Logic and gave lectures on scientific psychology, though these developments were soon overshadowed by the Napoleonic Wars . At the end of the Napoleonic era, Prussian authorities discontinued the Old University of Münster. Having consulted philosophers Hegel and Herbart , however, in 1825
31080-426: The technique of autogenic training , prominently advocated sterilization and euthanasia of men considered genetically undesirable, and devised techniques for facilitating this process. After the war, new institutions were created although some psychologists, because of their Nazi affiliation, were discredited. Alexander Mitscherlich founded a prominent applied psychoanalysis journal called Psyche . With funding from
31265-718: The unconscious mind. Research psychologists employ empirical methods to infer causal and correlational relationships between psychosocial variables . Some, but not all, clinical and counseling psychologists rely on symbolic interpretation . While psychological knowledge is often applied to the assessment and treatment of mental health problems, it is also directed towards understanding and solving problems in several spheres of human activity. By many accounts, psychology ultimately aims to benefit society. Many psychologists are involved in some kind of therapeutic role, practicing psychotherapy in clinical, counseling, or school settings. Other psychologists conduct scientific research on
31450-586: The underlying mechanisms on the physiological level and how they depend on genetic transmission and the environment. Developmental psychology studies the development of the mind from childhood to old age while social psychology examines the influence of social contexts on mind and behavior. Personality psychology investigates personality, exploring how characteristic patterns of thought, feeling, and behavior develop and vary among individuals. Further subfields include comparative , clinical , educational , occupational , and neuropsychology . Psychologists use
31635-434: The underlying processes continue their operation and the illusion persists even after a person has become aware of the illusion, indicating the mechanical and involuntary nature of the process. Other examples of mental modules concern cognitive processes responsible for language processing and facial recognition . Theories of the nature of mind aim to determine what all mental states have in common. They seek to discover
31820-457: The unique experiences of individual humans, which cannot be understood only as data points within a larger population. Critics inside and outside the field have argued that mainstream psychology has become increasingly dominated by a "cult of empiricism", which limits the scope of research because investigators restrict themselves to methods derived from the physical sciences. Feminist critiques have argued that claims to scientific objectivity obscure
32005-547: The universe in term of a division of physical reality and mental reality as well as the interaction between the physical and the mental. Chinese philosophy also emphasized purifying the mind in order to increase virtue and power. An ancient text known as The Yellow Emperor's Classic of Internal Medicine identifies the brain as the nexus of wisdom and sensation, includes theories of personality based on yin–yang balance, and analyzes mental disorder in terms of physiological and social disequilibria. Chinese scholarship that focused on
32190-410: The values and agenda of (historically) mostly male researchers. Jean Grimshaw, for example, argues that mainstream psychological research has advanced a patriarchal agenda through its efforts to control behavior. Psychologists generally consider biology the substrate of thought and feeling, and therefore an important area of study. Behaviorial neuroscience, also known as biological psychology, involves
32375-525: The war saw a social psychologist become chiefly responsible for determining the week-by-week-propaganda policy for the United States Government." Cartwright also wrote that psychologists had significant roles in managing the domestic economy. The Army rolled out its new General Classification Test to assess the ability of millions of soldiers. The Army also engaged in large-scale psychological research of troop morale and mental health . In
32560-471: The word piano and a picture of a piano are intentional in a derivative sense: they do not directly refer to a piano but if a person looks at them, they may evoke in this person a mental state that refers to a piano. Philosophers who disagree that all mental states are intentional cite examples such as itches, tickles, and pains as possible exceptions. According to behaviorism , mental states are dispositions to engage in certain publicly observable behavior as
32745-462: Was Naomi Weisstein , who was an accomplished researcher in psychology and neuroscience , and is perhaps best known for her paper, "Kirche, Kuche, Kinder as Scientific Law: Psychology Constructs the Female." Psychology Constructs the Female criticized the field of psychology for centering men and using biology too much to explain gender differences without taking into account social factors. Her work set
32930-492: Was a Dutch physician, iatrochemist , and entomologist , who worked on the same field as Jan Swammerdam . Blankaart proved the existence of a capillary system , as had been suggested by Leonardo da Vinci , by spouting up blood vessels, though he failed to realize the true significance of his findings. He is known for his development of injection techniques for this study and for writing the first Dutch book on child medicine. Blankaart translated works of John Mayow . Blankaart
33115-604: Was a turning point for women's recognition within the field of psychology. In addition to the contributions made by Leta Stetter Hollingworth and Anna Freud , Mary Whiton Calkins invented the paired associates technique of studying memory and developed self-psychology . Karen Horney developed the concept of " womb envy " and neurotic needs. Psychoanalyst Melanie Klein impacted developmental psychology with her research of play therapy . These great discoveries and contributions were made during struggles of sexism , discrimination , and little recognition for their work. Women in
33300-465: Was also used to justify the construction of socially specific mental disorders such as drapetomania and dysaesthesia aethiopica —the behavior of uncooperative African slaves. After the creation of experimental psychology, "ethnical psychology" emerged as a subdiscipline, based on the assumption that studying primitive races would provide an important link between animal behavior and the psychology of more evolved humans. A tenet of behavioral research
33485-561: Was another woman in psychology that changed the field with her research. She was one of the first African-Americans to receive a doctoral degree in psychology from Columbia University , along with her husband, Kenneth Clark . Her master's thesis, "The Development of Consciousness in Negro Pre-School Children," argued that black children's self-esteem was negatively impacted by racial discrimination . She and her husband conduced research building off her thesis throughout
33670-798: Was established by Carolyn Attneave . Harriet McAdoo was appointed to the White House Conference on Families in 1979. Dr. Kay Redfield Jamison , named one of Time Magazine's "Best Doctors in the United States" is a lecturer, psychologist, and writer. She is known for her vast modern contributions to bipolar disorder and her books An Unquiet Mind (Published 1995) and Nothing Was the Same (Published in 2009). Having Bipolar Disorder herself, she has written several memoirs about her experience with suicidal thoughts , manic behaviors, depression , and other issues that arise from being Bipolar . Dr. Angela Neal-Barnett views psychology through
33855-418: Was the development of the neocortex , which is responsible for many higher-order brain functions. The size of the brain relative to the body further increased with the development of primates , like monkeys, about 65 million years ago and later with the emergence of the first hominins about 7–5 million years ago. Anatomically modern humans appeared about 300,000 to 200,000 years ago. Various theories of
34040-554: Was the son of Nicolaas Blankaart, a professor in Greek and History in Steinfurt (1645–1650) and Middelburg (1650–1666), who moved to Heerenveen to become the physician of Countess Albertine Agnes of Nassau ; he was appointed in Franeker in 1669. His son started as an apprentice of an apothecary. In 1674 he moved to Amsterdam after becoming a doctor of Philosophy and Medicine at the University of Franeker . Blankaart followed
34225-469: Was well-financed throughout the war with a mandate to create a "New German Psychotherapy." This psychotherapy aimed to align suitable Germans with the overall goals of the Reich. As described by one physician, "Despite the importance of analysis, spiritual guidance and the active cooperation of the patient represent the best way to overcome individual mental problems and to subordinate them to the requirements of
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