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138-582: A prototype can also mean a typical example of something such as in the use of the derivation ' prototypical '. This is a useful term in identifying objects, behaviours and concepts which are considered the accepted norm and is analogous with terms such as stereotypes and archetypes . The word prototype derives from the Greek πρωτότυπον prototypon , "primitive form", neutral of πρωτότυπος prototypos , "original, primitive", from πρῶτος protos , "first" and τύπος typos , "impression" (originally in

276-639: A mockup , which is an inert representation of a machine's appearance, often made of some non-durable substance. An electronics designer often builds the first prototype from breadboard or stripboard or perfboard , typically using "DIP" packages. However, more and more often the first functional prototype is built on a "prototype PCB " almost identical to the production PCB, as PCB manufacturing prices fall and as many components are not available in DIP packages, but only available in SMT packages optimized for placing on

414-529: A second (thus defining the speed of light to be 299,792,458 meters per second). In many sciences, from pathology to taxonomy, prototype refers to a disease, species, etc. which sets a good example for the whole category. In biology, prototype is the ancestral or primitive form of a species or other group; an archetype. For example, the Senegal bichir is regarded as the prototypes of its genus, Polypterus . Stereotype In social psychology ,

552-440: A stereotype is a generalized belief about a particular category of people. It is an expectation that people might have about every person of a particular group. The type of expectation can vary; it can be, for example, an expectation about the group's personality, preferences, appearance or ability. Stereotypes are often overgeneralized , inaccurate, and resistant to new information . A stereotype does not necessarily need to be

690-403: A 30% increase in output simply from changing over to electric motors. Electrification enabled modern mass production, as with Thomas Edison's iron ore processing plant (about 1893) that could process 20,000 tons of ore per day with two shifts, each of five men. At that time it was still common to handle bulk materials with shovels, wheelbarrows and small narrow-gauge rail cars, and for comparison,

828-424: A PCB. Builders of military machines and aviation prefer the terms "experimental" and "service test". In electronics , prototyping means building an actual circuit to a theoretical design to verify that it works, and to provide a physical platform for debugging it if it does not. The prototype is often constructed using techniques such as wire wrapping or using a breadboard , stripboard or perfboard , with

966-643: A backbone "main" assembly line. A diagram of a typical mass-production factory looks more like the skeleton of a fish than a single line. Vertical integration is a business practice that involves gaining complete control over a product's production, from raw materials to final assembly. In the age of mass production, this caused shipping and trade problems in that shipping systems were unable to transport huge volumes of finished automobiles (in Henry Ford's case) without causing damage, and also government policies imposed trade barriers on finished units. Ford built

1104-585: A canal digger in previous decades typically handled five tons per 12-hour day. The biggest impact of early mass production was in manufacturing everyday items, such as at the Ball Brothers Glass Manufacturing Company , which electrified its mason jar plant in Muncie, Indiana , U.S., around 1900. The new automated process used glass-blowing machines to replace 210 craftsman glass blowers and helpers. A small electric truck

1242-423: A category to identify response patterns. Second, categorized information is more specific than non-categorized information, as categorization accentuates properties that are shared by all members of a group. Third, people can readily describe objects in a category because objects in the same category have distinct characteristics. Finally, people can take for granted the characteristics of a particular category because

1380-469: A cognitive mechanism known as illusory correlation – an erroneous inference about the relationship between two events. If two statistically infrequent events co-occur, observers overestimate the frequency of co-occurrence of these events. The underlying reason is that rare, infrequent events are distinctive and salient and, when paired, become even more so. The heightened salience results in more attention and more effective encoding , which strengthens

1518-403: A company to produce a larger quantity of one product at a lower cost than using traditional, non-linear methods. However, mass production is inflexible because it is difficult to alter a design or production process after a production line is implemented. Also, all products produced on one production line will be identical or very similar, and introducing variety to satisfy individual tastes

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1656-535: A couple of hours, were highly successful: over 100,000 Nissen huts were produced during World War I alone, and they would go on to serve in other conflicts and inspire a number of similar designs. Following World War II, in the United States, William Levitt pioneered the building of standardized tract houses in 56 different locations around the country. These communities were dubbed Levittowns , and they were able to be constructed quickly and cheaply through

1794-528: A favorite among US Military modelers), railroad equipment, motor trucks, motorcycles, and space-ships (real-world such as Apollo/Saturn Vs, or the ISS). As of 2014, basic rapid prototype machines (such as 3D printers ) cost about $ 2,000, but larger and more precise machines can cost as much as $ 500,000. In architecture , prototyping refers to either architectural model making (as form of scale modelling ) or as part of aesthetic or material experimentation , such as

1932-419: A group and being part of that group must also be salient for the individual. Craig McGarty, Russell Spears, and Vincent Y. Yzerbyt (2002) argued that the cognitive functions of stereotyping are best understood in relation to its social functions, and vice versa. Stereotypes can help make sense of the world. They are a form of categorization that helps to simplify and systematize information. Thus, information

2070-401: A gun or a harmless object (e.g., a mobile phone). Participants had to decide as quickly as possible whether to shoot the target. When the target person was armed, both black and white participants were faster in deciding to shoot the target when he was black than when he was white. When the target was unarmed, the participants avoided shooting him more quickly when he was white. Time pressure made

2208-449: A landmark study, David Hamilton and Richard Gifford (1976) examined the role of illusory correlation in stereotype formation. Subjects were instructed to read descriptions of behaviors performed by members of groups A and B. Negative behaviors outnumbered positive actions and group B was smaller than group A, making negative behaviors and membership in group B relatively infrequent and distinctive. Participants were then asked who had performed

2346-490: A more negative stereotype of people from countries that were the United States's WWII enemies . If there are no changes to an intergroup relationship, then relevant stereotypes do not change. According to a third explanation, shared stereotypes are neither caused by the coincidence of common stimuli, nor by socialisation. This explanation posits that stereotypes are shared because group members are motivated to behave in certain ways, and stereotypes reflect those behaviours. It

2484-463: A multiple head milling machine that could simultaneously machine 15 engine blocks held on a single fixture. All of these machine tools were arranged systematically in the production flow and some had special carriages for rolling heavy items into machining position. Production of the Ford Model T used 32,000 machine tools. The process of prefabrication, wherein parts are created separately from

2622-471: A negative assumption. They may be positive, neutral, or negative. An explicit stereotype refers to stereotypes that one is aware that one holds, and is aware that one is using to judge people. If person A is making judgments about a particular person B from group G , and person A has an explicit stereotype for group G , their decision bias can be partially mitigated using conscious control; however, attempts to offset bias due to conscious awareness of

2760-471: A newer model of stereotype content theorizes that stereotypes are frequently ambivalent and vary along two dimensions: warmth and competence. Warmth and competence are respectively predicted by lack of competition and status . Groups that do not compete with the in-group for the same resources (e.g., college space) are perceived as warm, whereas high-status (e.g., economically or educationally successful) groups are considered competent. The groups within each of

2898-452: A person's task of understanding his or her world less cognitively demanding. In the following situations, the overarching purpose of stereotyping is for people to put their collective self (their in-group membership) in a positive light: As mentioned previously, stereotypes can be used to explain social events. Henri Tajfel described his observations of how some people found that the antisemitic fabricated contents of The Protocols of

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3036-583: A pretest had revealed that subjects had no preexisting expectations about attitudes toward euthanasia and the department that students belong to. The attribution error created the new stereotype that law students are more likely to support euthanasia. Nier et al. (2012) found that people who tend to draw dispositional inferences from behavior and ignore situational constraints are more likely to stereotype low-status groups as incompetent and high-status groups as competent. Participants listened to descriptions of two fictitious groups of Pacific Islanders , one of which

3174-459: A set of actions: a person of group A or group B. Results showed that subjects overestimated the frequency with which both distinctive events, membership in group B and negative behavior, co-occurred, and evaluated group B more negatively. This despite the fact the proportion of positive to negative behaviors was equivalent for both groups and that there was no actual correlation between group membership and behaviors. Although Hamilton and Gifford found

3312-437: A similar effect for positive behaviors as the infrequent events, a meta-analytic review of studies showed that illusory correlation effects are stronger when the infrequent, distinctive information is negative. Hamilton and Gifford's distinctiveness-based explanation of stereotype formation was subsequently extended. A 1994 study by McConnell, Sherman, and Hamilton found that people formed stereotypes based on information that

3450-439: A social group and a domain or attribute. For example, one can have beliefs that women and men are equally capable of becoming successful electricians but at the same time many can associate electricians more with men than women. In social psychology , a stereotype is any thought widely adopted about specific types of individuals or certain ways of behaving intended to represent the entire group of those individuals or behaviors as

3588-513: A spindle cutting machine, which could produce multiple parts at the same time. Terry hired Silas Hoadley and Seth Thomas to work the Assembly line at the facilities. The Porter Contract was the first contract which called for mass production of clock movements in history. In 1815, Terry began mass-producing the first shelf clock. Chauncey Jerome , an apprentice of Eli Terry mass-produced up to 20,000 brass clocks annually in 1840 when he invented

3726-495: A stereotype often fail at being truly impartial, due to either underestimating or overestimating the amount of bias being created by the stereotype. Implicit stereotypes are those that lay on individuals' subconsciousness, that they have no control or awareness of. "Implicit stereotypes are built based on two concepts, associative networks in semantic (knowledge) memory and automatic activation". Implicit stereotypes are automatic and involuntary associations that people make between

3864-591: A system of process control which uses various instruments to measure variables such as temperature, pressure, volumetric and level, providing feedback. Bulk materials such as coal, ores, grains and wood chips are handled by belt, chain, slat, pneumatic or screw conveyors, bucket elevators and mobile equipment such as front-end loaders . Materials on pallets are handled with forklifts. Also used for handling heavy items like reels of paper, steel or machinery are electric overhead cranes , sometimes called bridge cranes because they span large factory bays. Mass production

4002-497: A time to the initial prototype. In many programming languages , a function prototype is the declaration of a subroutine or function (and should not be confused with software prototyping). This term is rather C / C++ -specific; other terms for this notion are signature , type and interface . In prototype-based programming (a form of object-oriented programming ), new objects are produced by cloning existing objects, which are called prototypes. The term may also refer to

4140-401: A tremendous amount of useless handling and hauling. The belt and line shaft were also tremendously wasteful – so wasteful indeed that no factory could be really large, for even the longest line shaft was small according to modern requirements. Also high speed tools were impossible under the old conditions – neither the pulleys nor the belts could stand modern speeds. Without high speed tools and

4278-480: A very large amount of trees. In order to speed up such efforts, fast propagation of trees may be useful. Some automated machines have been produced to allow for fast (vegetative) plant propagation . Also, for some plants that help to sequester carbon (such as seagrass ), techniques have been developed to help speed up the process . Mass production benefited from the development of materials such as inexpensive steel, high strength steel and plastics. Machining of metals

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4416-471: A way that the Planck constant h is prescribed a value of exactly 6.626 070 15 × 10 joule-second (J⋅s) Until 1960, the meter was defined by a platinum-iridium prototype bar with two marks on it (that were, by definition, spaced apart by one meter), the international prototype of the metre , and in 1983 the meter was redefined to be the distance in free space covered by light in 1/299,792,458 of

4554-508: A whole. These thoughts or beliefs may or may not accurately reflect reality. Within psychology and across other disciplines, different conceptualizations and theories of stereotyping exist, at times sharing commonalities, as well as containing contradictory elements. Even in the social sciences and some sub-disciplines of psychology, stereotypes are occasionally reproduced and can be identified in certain theories, for example, in assumptions about other cultures. The term stereotype comes from

4692-607: A worker work on a whole product from start to finish. The emergence of mass production allowed supply to outstrip demand in many markets, forcing companies to seek new ways to become more competitive . Mass production ties into the idea of overconsumption and the idea that we as humans consume too much. Mass production of fluid matter typically involves piping with centrifugal pumps or screw conveyors (augers) to transfer raw materials or partially complete products between vessels. Fluid flow processes such as oil refining and bulk materials such as wood chips and pulp are automated using

4830-656: Is Jikji , printed in Korea in the year 1377. Johannes Gutenberg , through his invention of the printing press and production of the Gutenberg Bible , introduced movable type to Europe. Through this introduction, mass production in the European publishing industry was made commonplace, leading to a democratization of knowledge , increased literacy and education, and the beginnings of modern science . French artillery engineer Jean-Baptiste de Gribeauval introduced

4968-405: Is capital-intensive and energy-intensive, for it uses a high proportion of machinery and energy in relation to workers. It is also usually automated while total expenditure per unit of product is decreased. However, the machinery that is needed to set up a mass production line (such as robots and machine presses ) is so expensive that in order to attain profits there must be some assurance that

5106-517: Is a form of functional or working prototype. The justification for its creation is usually a data migration , data integration or application implementation project and the raw materials used as input are an instance of all the relevant data which exists at the start of the project. The objectives of data prototyping are to produce: To achieve this, a data architect uses a graphical interface to interactively develop and execute transformation and cleansing rules using raw data. The resultant data

5244-448: Is a reduction of non-productive effort of all types. In craft production , the craftsman must bustle about a shop, getting parts and assembling them. He must locate and use many tools many times for varying tasks. In mass production, each worker repeats one or a few related tasks that use the same tool to perform identical or near-identical operations on a stream of products. The exact tool and parts are always at hand, having been moved down

5382-471: Is an estimate of how people spontaneously stereotype U.S social groups of people using traits. Koch et al. conducted several studies asking participants to list groups and sort them according to their similarity. Using statistical techniques, they revealed three dimensions that explained the similarity ratings. These three dimensions were agency (A), beliefs (B), and communion (C). Agency is associated with reaching goals, standing out and socio-economic status and

5520-517: Is becoming practical to eliminate the creation of a physical prototype (except possibly at greatly reduced scales for promotional purposes), instead modeling all aspects of the final product as a computer model . An example of such a development can be seen in Boeing 787 Dreamliner , in which the first full sized physical realization is made on the series production line. Computer modeling is now being extensively used in automotive design, both for form (in

5658-495: Is better to categorise ingroup members under different categories (e.g., Democrats versus Republican) than under a shared category (e.g., American). Finally, ingroup members may influence each other to arrive at a common outgroup stereotype. Different disciplines give different accounts of how stereotypes develop: Psychologists may focus on an individual's experience with groups, patterns of communication about those groups, and intergroup conflict. As for sociologists, they may focus on

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5796-415: Is important to note from this explanation that stereotypes are the consequence, not the cause, of intergroup relations . This explanation assumes that when it is important for people to acknowledge both their ingroup and outgroup, they will emphasise their difference from outgroup members, and their similarity to ingroup members. International migration creates more opportunities for intergroup relations, but

5934-425: Is more easily identified, recalled, predicted, and reacted to. Stereotypes are categories of objects or people. Between stereotypes, objects or people are as different from each other as possible. Within stereotypes, objects or people are as similar to each other as possible. Gordon Allport has suggested possible answers to why people find it easier to understand categorized information. First, people can consult

6072-437: Is no longer as clearly and/or as positively differentiated from relevant outgroups, and they want to restore the intergroup differentiation to a state that favours the ingroup. Stereotypes can emphasize a person's group membership in two steps: Stereotypes emphasize the person's similarities with ingroup members on relevant dimensions, and also the person's differences from outgroup members on relevant dimensions. People change

6210-843: Is one of the three main production methods. The term mass production was popularized by a 1926 article in the Encyclopædia Britannica supplement that was written based on correspondence with Ford Motor Company . The New York Times used the term in the title of an article that appeared before the publication of the Britannica article. The idea of mass production is applied to many kinds of products: from fluids and particulates handled in bulk ( food , fuel , chemicals and mined minerals ), to clothing, textiles, parts and assemblies of parts ( household appliances and automobiles ). Some mass production techniques, such as standardized sizes and production lines, predate

6348-492: Is related to competence in the SCM, with some examples of traits including poor and wealthy, powerful and powerless, low status and high status. Beliefs is associated with views on the world, morals and conservative-progressive beliefs with some examples of traits including traditional and modern, religious and science-oriented or conventional and alternative. Finally, communion is associated with connecting with others and fitting in and

6486-814: Is similar to warmth from the SCM, with some examples of traits including trustworthy and untrustworthy, cold and warm and repellent and likeable. According to research using this model, there is a curvilinear relationship between agency and communion. For example, if a group is high or low in the agency dimension then they may be seen as un-communal, whereas groups that are average in agency are seen as more communal. This model has many implications in predicting behaviour towards stereotyped groups. For example, Koch and colleagues recently proposed that perceived similarity in agency and beliefs increases inter-group cooperation. Early studies suggested that stereotypes were only used by rigid, repressed, and authoritarian people. This idea has been refuted by contemporary studies that suggest

6624-465: Is statistically less frequent than desirable behavior. Since both events "blackness" and "undesirable behavior" are distinctive in the sense that they are infrequent, the combination of the two leads observers to overestimate the rate of co-occurrence. Similarly, in workplaces where women are underrepresented and negative behaviors such as errors occur less frequently than positive behaviors, women become more strongly associated with mistakes than men. In

6762-524: Is that while Taylor focused mostly on efficiency of the worker, Ford also substituted for labor by using machines, thoughtfully arranged, wherever possible. In 1807, Eli Terry was hired to produce 4,000 wooden movement clocks in the Porter Contract. At this time, the annual yield for wooden clocks did not exceed a few dozen on average. Terry developed a milling machine in 1795, in which he perfected Interchangeable parts . In 1807, Terry developed

6900-413: Is then evaluated and the rules refined. Beyond the obvious visual checking of the data on-screen by the data architect, the usual evaluation and validation approaches are to use Data profiling software and then to insert the resultant data into a test version of the target application and trial its use. When developing software or digital tools that humans interact with, a prototype is an artifact that

7038-499: Is used as the standard of measurement of some physical quantity to base all measurement of that physical quantity against. Sometimes this standard object is called an artifact . In the International System of Units ( SI ), there remains no prototype standard since May 20, 2019 . Before that date, the last prototype used was the international prototype of the kilogram , a solid platinum-iridium cylinder kept at

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7176-551: Is used for printing instead of the original. Outside of printing, the first reference to stereotype in English was in 1850, as a noun that meant 'image perpetuated without change'. However, it was not until 1922 that stereotype was first used in the modern psychological sense by American journalist Walter Lippmann in his work Public Opinion . Stereotypes, prejudice , racism, and discrimination are understood as related but different concepts. Stereotypes are regarded as

7314-408: Is used to ask and answer a design question. Prototypes provide the means for examining design problems and evaluating solutions. HCI practitioners can employ several different types of prototypes: In the field of scale modeling (which includes model railroading , vehicle modeling, airplane modeling , military modeling, etc.), a prototype is the real-world basis or source for a scale model—such as

7452-594: The Bureau International des Poids et Mesures (International Bureau of Weights and Measures) in Sèvres France (a suburb of Paris ) that by definition was the mass of exactly one kilogram . Copies of this prototype are fashioned and issued to many nations to represent the national standard of the kilogram and are periodically compared to the Paris prototype. Now the kilogram is redefined in such

7590-620: The Ford River Rouge Complex with the idea of making the company's own iron and steel in the same large factory site where parts and car assembly took place. River Rouge also generated its own electricity. Upstream vertical integration, such as to raw materials, is away from leading technology toward mature, low-return industries. Most companies chose to focus on their core business rather than vertical integration. This included buying parts from outside suppliers, who could often produce them as cheaply or cheaper. Standard Oil ,

7728-525: The Forty Wall House open source material prototyping centre in Australia. Architects prototype to test ideas structurally, aesthetically and technically. Whether the prototype works or not is not the primary focus: architectural prototyping is the revelatory process through which the architect gains insight. In the science and practice of metrology , a prototype is a human-made object that

7866-560: The Henry Ford Company which was rebranded as Cadillac and later was awarded the Dewar Trophy in 1908 for creating interchangeable mass-produced precision engine parts, Henry Ford downplayed the role of Taylorism in the development of mass production at his company. However, Ford management performed time studies and experiments to mechanize their factory processes, focusing on minimizing worker movements. The difference

8004-517: The Industrial Revolution by many centuries; however, it was not until the introduction of machine tools and techniques to produce interchangeable parts were developed in the mid-19th century that modern mass production was possible. Mass production involves making many copies of products, very quickly, using assembly line techniques to send partially complete products to workers who each work on an individual step, rather than having

8142-664: The Portsmouth Block Mills in England to make ships' pulley blocks for the Royal Navy in the Napoleonic Wars . It was achieved in 1803 by Marc Isambard Brunel in cooperation with Henry Maudslay under the management of Sir Samuel Bentham . The first unmistakable examples of manufacturing operations carefully designed to reduce production costs by specialized labour and the use of machines appeared in

8280-535: The Prototype Javascript Framework . Additionally, the term may refer to the prototype design pattern. Continuous learning approaches within organizations or businesses may also use the concept of business or process prototypes through software models. The concept of prototypicality is used to describe how much a website deviates from the expected norm, and leads to a lowering of user preference for that site's design. A data prototype

8418-643: The Venetian Arsenal produced nearly one ship every day in what was effectively the world's first factory , which at its height employed 16,000 people. The invention of movable type has allowed for documents such as books to be mass produced. The first movable type system was invented in China by Bi Sheng , during the reign of the Song dynasty , where it was used to, among other things, issue paper money . The oldest extant book produced using metal type

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8556-513: The representativeness heuristic . The results show that sector as well as non-work role-referencing influences perceived employee professionalism but has little effect on the confirmation of particular public sector stereotypes. Moreover, the results do not confirm a congruity effect of consistent stereotypical information: non-work role-referencing does not aggravate the negative effect of sector affiliation on perceived employee professionalism. Research has shown that stereotypes can develop based on

8694-421: The styling and aerodynamics of the vehicle) and in function—especially for improving vehicle crashworthiness and in weight reduction to improve mileage. The most common use of the word prototype is a functional, although experimental, version of a non-military machine (e.g., automobiles, domestic appliances, consumer electronics) whose designers would like to have built by mass production means, as opposed to

8832-480: The 18th century in England. The Navy was in a state of expansion that required 100,000 pulley blocks to be manufactured a year. Bentham had already achieved remarkable efficiency at the docks by introducing power-driven machinery and reorganising the dockyard system. Brunel, a pioneering engineer, and Maudslay, a pioneer of machine tool technology who had developed the first industrially practical screw-cutting lathe in 1800 which standardized screw thread sizes for

8970-429: The 1940s refuted the suggestion that stereotype contents cannot be changed at will. Those studies suggested that one group's stereotype of another group would become more or less positive depending on whether their intergroup relationship had improved or degraded. Intergroup events (e.g., World War II , Persian Gulf conflicts) often changed intergroup relationships. For example, after WWII, Black American students held

9108-455: The 20th century's definition of mass production appeared in a 1926 Encyclopædia Britannica supplement. The article was written based on correspondence with Ford Motor Company and is sometimes credited as the first use of the term. Electrification of factories began very gradually in the 1890s after the introduction of a practical DC motor by Frank J. Sprague and accelerated after the AC motor

9246-709: The Elders of Zion only made sense if Jews have certain characteristics. Therefore, according to Tajfel, Jews were stereotyped as being evil and yearning for world domination to match the antisemitic "facts" as presented in The Protocols of the Elders of Zion. People create stereotypes of an outgroup to justify the actions that their in-group has committed (or plans to commit) towards that outgroup. For example, according to Tajfel, Europeans stereotyped African, Indian, and Chinese people as being incapable of achieving financial advances without European help. This stereotype

9384-601: The Emperor's tomb is also believed to have been created through the use of standardized molds on an assembly line . In ancient Carthage , ships of war were mass-produced on a large scale at a moderate cost, allowing them to efficiently maintain their control of the Mediterranean . Many centuries later, the Republic of Venice would follow Carthage in producing ships with prefabricated parts on an assembly line:

9522-511: The French adjective stéréotype and derives from the Greek words στερεός ( stereos ), 'firm, solid' and τύπος ( typos ), 'impression', hence 'solid impression on one or more ideas / theories '. The term was first used in the printing trade in 1798 by Firmin Didot , to describe a printing plate that duplicated any typography . The duplicate printing plate, or the stereotype ,

9660-472: The agency–beliefs–communion (ABC) model suggested that methods to study warmth and competence in the stereotype content model (SCM) were missing a crucial element, that being, stereotypes of social groups are often spontaneously generated. Experiments on the SCM usually ask participants to rate traits according to warmth and competence but this does not allow participants to use any other stereotype dimensions. The ABC model, proposed by Koch and colleagues in 2016

9798-476: The armories designing and building many of their own. Some of the methods employed were a system of gauges for checking dimensions of the various parts and jigs and fixtures for guiding the machine tools and properly holding and aligning the work pieces. This system came to be known as armory practice or the American system of manufacturing , which spread throughout New England aided by skilled mechanics from

9936-894: The armories who were instrumental in transferring the technology to the sewing machines manufacturers and other industries such as machine tools, harvesting machines and bicycles. Singer Manufacturing Co. , at one time the largest sewing machine manufacturer, did not achieve interchangeable parts until the late 1880s, around the same time Cyrus McCormick adopted modern manufacturing practices in making harvesting machines . During World War II , The United States mass-produced many vehicles and weapons , such as ships (i.e. Liberty Ships , Higgins boats ), aircraft (i.e. North American P-51 Mustang , Consolidated B-24 Liberator , Boeing B-29 Superfortress ), jeeps (i.e. Willys MB ), trucks, tanks (i.e. M4 Sherman ) and M2 Browning and M1919 Browning machine guns . Many vehicles, transported by ships have been shipped in parts and later assembled on-site. For

10074-504: The assembly line consecutively. The worker spends little or no time retrieving and/or preparing materials and tools, and so the time taken to manufacture a product using mass production is shorter than when using traditional methods. The probability of human error and variation is also reduced, as tasks are predominantly carried out by machinery; error in operating such machinery has more far-reaching consequences. A reduction in labour costs, as well as an increased rate of production, enables

10212-486: The attributes that people think characterize a group. Studies of stereotype content examine what people think of others, rather than the reasons and mechanisms involved in stereotyping. Early theories of stereotype content proposed by social psychologists such as Gordon Allport assumed that stereotypes of outgroups reflected uniform antipathy . For instance, Katz and Braly argued in their classic 1933 study that ethnic stereotypes were uniformly negative. By contrast,

10350-400: The automatic activation of negative stereotypes. In a study by Kawakami et al. (2000), for example, participants were presented with a category label and taught to respond "No" to stereotypic traits and "Yes" to nonstereotypic traits. After this training period, subjects showed reduced stereotype activation. This effect is based on the learning of new and more positive stereotypes rather than

10488-407: The behavior confirms and even strengthens existing stereotypes. Second, the affective or emotional aspects of prejudice render logical arguments against stereotypes ineffective in countering the power of emotional responses. Correspondence bias refers to the tendency to ascribe a person's behavior to disposition or personality, and to underestimate the extent to which situational factors elicited

10626-427: The behavior. Correspondence bias can play an important role in stereotype formation. For example, in a study by Roguer and Yzerbyt (1999) participants watched a video showing students who were randomly instructed to find arguments either for or against euthanasia . The students that argued in favor of euthanasia came from the same law department or from different departments. Results showed that participants attributed

10764-504: The belief that the events are correlated . In the inter-group context, illusory correlations lead people to misattribute rare behaviors or traits at higher rates to minority group members than to majority groups, even when both display the same proportion of the behaviors or traits. Black people , for instance, are a minority group in the United States and interaction with blacks is a relatively infrequent event for an average white American . Similarly, undesirable behavior (e.g. crime)

10902-429: The blocks to ensure alignment throughout the process. One of the many advantages of this new method was the increase in labour productivity due to the less labour-intensive requirements of managing the machinery. Richard Beamish, assistant to Brunel's son and engineer, Isambard Kingdom Brunel , wrote: So that ten men, by the aid of this machinery, can accomplish with uniformity, celerity and ease, what formerly required

11040-399: The category itself may be an arbitrary grouping. A complementary perspective theorizes how stereotypes function as time- and energy-savers that allow people to act more efficiently. Yet another perspective suggests that stereotypes are people's biased perceptions of their social contexts. In this view, people use stereotypes as shortcuts to make sense of their social contexts, and this makes

11178-407: The cheap 30-hour OG clock. The United States Department of War sponsored the development of interchangeable parts for guns produced at the arsenals at Springfield, Massachusetts and Harpers Ferry , Virginia (now West Virginia) in the early decades of the 19th century, finally achieving reliable interchangeability by about 1850. This period coincided with the development of machine tools , with

11316-458: The control group (although the test did not include any words specifically referring to slowness), thus acting in a way that the stereotype suggests that elderly people will act. And the stereotype of the elder will affect the subjective perception of them through depression. In another experiment, Bargh, Chen, and Burrows also found that because the stereotype about blacks includes the notion of aggression, subliminal exposure to black faces increased

11454-406: The cycle returns to customer evaluation. The cycle starts by listening to the user, followed by building or revising a mock-up, and letting the user test the mock-up , then back. There is now a new generation of tools called Application Simulation Software which help quickly simulate application before their development. Extreme programming uses iterative design to gradually add one feature at

11592-457: The emotional response, and discrimination refers to actions. Although related, the three concepts can exist independently of each other. According to Daniel Katz and Kenneth Braly, stereotyping leads to racial prejudice when people emotionally react to the name of a group, ascribe characteristics to members of that group, and then evaluate those characteristics. Possible prejudicial effects of stereotypes are: Stereotype content refers to

11730-456: The fashion industry, particularly in the realm of fibers and materials. The advent of synthetic fibers, such as polyester and nylon, revolutionized textile manufacturing by providing cost-effective alternatives to natural fibers. This shift enabled the rapid production of inexpensive clothing, contributing to the rise of fast fashion. This reliance on mass production has raised concerns about environmental sustainability and labor conditions, spurring

11868-479: The final production costs due to inefficiencies in materials and processes. Prototypes are also used to revise the design for the purposes of reducing costs through optimization and refinement. It is possible to use prototype testing to reduce the risk that a design may not perform as intended, however prototypes generally cannot eliminate all risk. Building the full design is often expensive and can be time-consuming, especially when repeated several times—building

12006-528: The final production design. This is due to the skill and choices of the designer(s), and the inevitable inherent limitations of a prototype. Due to differences in materials, processes and design fidelity, it is possible that a prototype may fail to perform acceptably although the production design may have been sound. Conversely, prototypes may perform acceptably but the production design and outcome may prove unsuccessful. In general, it can be expected that individual prototype costs will be substantially greater than

12144-502: The finer steels which they brought about, there could be nothing of what we call modern industry. Mass production was popularized in the late 1910s and 1920s by Henry Ford's Ford Motor Company , which introduced electric motors to the then-well-known technique of chain or sequential production. Ford also bought or designed and built special purpose machine tools and fixtures such as multiple spindle drill presses that could drill every hole on one side of an engine block in one operation and

12282-559: The finished product, is at the core of all mass-produced construction. Early examples include movable structures reportedly utilized by Akbar the Great , and the chattel houses built by emancipated slaves on Barbados . The Nissen hut , first used by the British during World War I , married prefabrication and mass production in a way that suited the needs of the military. The simple structures, which cost little and could be erected in just

12420-471: The first instance of the application of mass production techniques (though not necessarily the assembly-line method) to marine engineering. In filling an Admiralty order for 90 sets to his high-pressure and high-revolution horizontal trunk engine design, Penn produced them all in 90 days. He also used Whitworth Standard threads throughout. Prerequisites for the wide use of mass production were interchangeable parts , machine tools and power , especially in

12558-594: The first time which in turn allowed the application of interchangeable parts , collaborated on plans to manufacture block-making machinery. By 1805, the dockyard had been fully updated with the revolutionary, purpose-built machinery at a time when products were still built individually with different components. A total of 45 machines were required to perform 22 processes on the blocks, which could be made into one of three possible sizes. The machines were almost entirely made of metal thus improving their accuracy and durability. The machines would make markings and indentations on

12696-475: The form of electricity . Some of the organizational management concepts needed to create 20th-century mass production, such as scientific management , had been pioneered by other engineers (most of whom are not famous, but Frederick Winslow Taylor is one of the well-known ones), whose work would later be synthesized into fields such as industrial engineering , manufacturing engineering , operations research , and management consultancy . Although after leaving

12834-420: The four combinations of high and low levels of warmth and competence elicit distinct emotions. The model explains the phenomenon that some out-groups are admired but disliked, whereas others are liked but disrespected. This model was empirically tested on a variety of national and international samples and was found to reliably predict stereotype content. An even more recent model of stereotype content called

12972-464: The full design, figuring out what the problems are and how to solve them, then building another full design. As an alternative, rapid prototyping or rapid application development techniques are used for the initial prototypes, which implement part, but not all, of the complete design. This allows designers and manufacturers to rapidly and inexpensively test the parts of the design that are most likely to have problems, solve those problems, and then build

13110-507: The full design. In technology research, a technology demonstrator is a prototype serving as proof-of-concept and demonstration model for a new technology or future product, proving its viability and illustrating conceivable applications. In large development projects, a testbed is a platform and prototype development environment for rigorous experimentation and testing of new technologies, components, scientific theories and computational tools. With recent advances in computer modeling it

13248-448: The high-status Pacific Islanders as competent. The correspondence bias was a significant predictor of stereotyping even after controlling for other measures that have been linked to beliefs about low status groups, the just-world fallacy and social dominance orientation . Based on the anti-public sector bias, Döring and Willems (2021) found that employees in the public sector are considered as less professional compared to employees in

13386-475: The impact of these differences on the intended role for the prototype. For example, if a visual prototype is not able to use the same materials as the final product, they will attempt to substitute materials with properties that closely simulate the intended final materials. Engineers and prototyping specialists seek to understand the limitations of prototypes to exactly simulate the characteristics of their intended design. Prototypes represent some compromise from

13524-690: The ingroup and/or outgroups, ingroup members take collective action to prevent other ingroup members from diverging from each other. John C. Turner proposed in 1987 that if ingroup members disagree on an outgroup stereotype, then one of three possible collective actions follow: First, ingroup members may negotiate with each other and conclude that they have different outgroup stereotypes because they are stereotyping different subgroups of an outgroup (e.g., Russian gymnasts versus Russian boxers). Second, ingroup members may negotiate with each other, but conclude that they are disagreeing because of categorical differences amongst themselves. Accordingly, in this context, it

13662-558: The interactions do not always disconfirm stereotypes. They are also known to form and maintain them. The dual-process model of cognitive processing of stereotypes asserts that automatic activation of stereotypes is followed by a controlled processing stage, during which an individual may choose to disregard or ignore the stereotyped information that has been brought to mind. A number of studies have found that stereotypes are activated automatically. Patricia Devine (1989), for example, suggested that stereotypes are automatically activated in

13800-547: The invention of machine tools the manufacture of precision parts, especially metal ones, was highly labour-intensive. Crossbows made with bronze parts were produced in China during the Warring States period . The Qin Emperor unified China at least in part by equipping large armies with these weapons, which were fitted with a sophisticated trigger mechanism made of interchangeable parts. The Terracotta Army guarding

13938-423: The leather belt and line shaft , for it eventually became possible to provide each tool with its own electric motor. This may seem only a detail of minor importance. In fact, modern industry could not be carried out with the belt and line shaft for a number of reasons. The motor enabled machinery to be arranged in the order of the work, and that alone has probably doubled the efficiency of industry, for it has cut out

14076-455: The leveraging of economies of scale , as well as the specialization of construction tasks in a process akin to an assembly line. This era also saw the invention of the mobile home , a small prefabricated house that can be transported cheaply on a truck bed. In the modern industrialization of construction, mass production is often used for prefabrication of house components. Fabrics and Materials Mass production has significantly impacted

14214-404: The likelihood that randomly selected white college students reacted with more aggression and hostility than participants who subconsciously viewed a white face. Similarly, Correll et al. (2002) showed that activated stereotypes about blacks can influence people's behavior. In a series of experiments, black and white participants played a video game, in which a black or white person was shown holding

14352-793: The major oil company in the 19th century, was vertically integrated partly because there was no demand for unrefined crude oil, but kerosene and some other products were in great demand. The other reason was that Standard Oil monopolized the oil industry. The major oil companies were, and many still are, vertically integrated, from production to refining and with their own retail stations, although some sold off their retail operations. Some oil companies also have chemical divisions. Lumber and paper companies at one time owned most of their timber lands and sold some finished products such as corrugated boxes. The tendency has been to divest of timber lands to raise cash and to avoid property taxes. The economies of mass production come from several sources. The primary cause

14490-458: The mid-1950s, Gordon Allport wrote that, "It is possible for a stereotype to grow in defiance of all evidence." Mass production Mass production , also known as flow production , series production , series manufacture , or continuous production , is the production of substantial amounts of standardized products in a constant flow, including and especially on assembly lines . Together with job production and batch production , it

14628-405: The most cognitive component and often occurs without conscious awareness, whereas prejudice is the affective component of stereotyping and discrimination is one of the behavioral components of prejudicial reactions. In this tripartite view of intergroup attitudes, stereotypes reflect expectations and beliefs about the members of groups perceived as different from one's own, prejudice represents

14766-457: The need for greater ethical and sustainable practices within the fashion industry. Mass production systems for items made of numerous parts are usually organized into assembly lines . The assemblies pass by on a conveyor, or if they are heavy, hung from an overhead crane or monorail. In a factory for a complex product, rather than one assembly line, there may be many auxiliary assembly lines feeding sub-assemblies (i.e. car engines or seats) to

14904-439: The negation of already existing ones. Empirical evidence suggests that stereotype activation can automatically influence social behavior. For example, Bargh , Chen, and Burrows (1996) activated the stereotype of the elderly among half of their participants by administering a scrambled-sentence test where participants saw words related to age stereotypes. Subjects primed with the stereotype walked significantly more slowly than

15042-436: The neutral category labels were presented, people high and low in prejudice would respond differently. In a design similar to Devine's, Lepore and Brown primed the category of African-Americans using labels such as "blacks" and "West Indians" and then assessed the differential activation of the associated stereotype in the subsequent impression-formation task. They found that high-prejudice participants increased their ratings of

15180-515: The ongoing energy transition , many wind turbine components and solar panels are being mass-produced. Wind turbines and solar panels are being used in respectively wind farms and solar farms . In addition, in the ongoing climate change mitigation , large-scale carbon sequestration (through reforestation , blue carbon restoration , etc) has been proposed. Some projects (such as the Trillion Tree Campaign ) involve planting

15318-422: The presence of a member (or some symbolic equivalent) of a stereotyped group and that the unintentional activation of the stereotype is equally strong for high- and low-prejudice persons. Words related to the cultural stereotype of blacks were presented subliminally . During an ostensibly unrelated impression-formation task, subjects read a paragraph describing a race-unspecified target person's behaviors and rated

15456-420: The private sector. They build on the assumption that the red-tape and bureaucratic nature of the public sector spills over in the perception that citizens have about the employees working in the sector. With an experimental vignette study, they analyze how citizens process information on employees' sector affiliation, and integrate non-work role-referencing to test the stereotype confirmation assumption underlying

15594-479: The product against the plans or the other parts as it is being formed, there were jigs ready at hand to ensure that the part was made to fit this set-up. It had already been checked that the finished part would be to specifications to fit all the other finished parts—and it would be made more quickly, with no time spent on finishing the parts to fit one another. Later, once computerized control came about (for example, CNC ), jigs were obviated, but it remained true that

15732-421: The product will be successful. One of the descriptions of mass production is that "the skill is built into the tool", which means that the worker using the tool may not need the skill. For example, in the 19th or early 20th century, this could be expressed as "the craftsmanship is in the workbench itself" (not the training of the worker). Rather than having a skilled worker measure every dimension of each part of

15870-411: The prototyping platform, or replace it with only the microcontroller chip and the circuitry that is relevant to their product. Prototype software is often referred to as alpha grade , meaning it is the first version to run. Often only a few functions are implemented, the primary focus of the alpha is to have a functional base code on to which features may be added. Once alpha grade software has most of

16008-438: The real EMD GP38-2 locomotive—which is the prototype of Athearn 's (among other manufacturers) locomotive model. Technically, any non-living object can serve as a prototype for a model, including structures, equipment, and appliances, and so on, but generally prototypes have come to mean full-size real-world vehicles including automobiles (the prototype 1957 Chevy has spawned many models), military equipment (such as M4 Shermans,

16146-402: The relations among different groups in a social structure. They suggest that stereotypes are the result of conflict, poor parenting, and inadequate mental and emotional development. Once stereotypes have formed, there are two main factors that explain their persistence. First, the cognitive effects of schematic processing (see schema ) make it so that when a member of a group behaves as we expect,

16284-462: The required features integrated into it, it becomes beta software for testing of the entire software and to adjust the program to respond correctly during situations unforeseen during development. Often the end users may not be able to provide a complete set of application objectives, detailed input, processing, or output requirements in the initial stage. After the user evaluation, another prototype will be built based on feedback from users, and again

16422-457: The result being a circuit that is electrically identical to the design but not physically identical to the final product. Open-source tools like Fritzing exist to document electronic prototypes (especially the breadboard-based ones) and move toward physical production. Prototyping platforms such as Arduino also simplify the task of programming and interacting with a microcontroller . The developer can choose to deploy their invention as-is using

16560-547: The same stereotypes. Some psychologists believe that although stereotypes can be absorbed at any age, stereotypes are usually acquired in early childhood under the influence of parents, teachers, peers, and the media. If stereotypes are defined by social values, then stereotypes only change as per changes in social values. The suggestion that stereotype content depends on social values reflects Walter Lippman 's argument in his 1922 publication that stereotypes are rigid because they cannot be changed at will. Studies emerging since

16698-469: The same way. The problem with the 'common environment' is that explanation in general is that it does not explain how shared stereotypes can occur without direct stimuli. Research since the 1930s suggested that people are highly similar with each other in how they describe different racial and national groups, although those people have no personal experience with the groups they are describing. Another explanation says that people are socialised to adopt

16836-489: The sense of a mark left by a blow, then by a stamp struck by a die (note "typewriter"); by implication a scar or mark; by analogy a shape i.e. a statue, (figuratively) style, or resemblance; a model for imitation or illustrative example—note "typical"). Prototypes explore different aspects of an intended design: In general, the creation of prototypes will differ from creation of the final product in some fundamental ways: Engineers and prototype specialists attempt to minimize

16974-452: The shooter bias even more pronounced. Stereotypes can be efficient shortcuts and sense-making tools. They can, however, keep people from processing new or unexpected information about each individual, thus biasing the impression formation process. Early researchers believed that stereotypes were inaccurate representations of reality. A series of pioneering studies in the 1930s found no empirical support for widely held racial stereotypes. By

17112-418: The skill (or knowledge) was built into the tool (or process, or documentation) rather than residing in the worker's head. This is the specialized capital required for mass production; each workbench and set of tools (or each CNC cell, or each fractionating column ) is different (fine-tuned to its task). Standardized parts and sizes and factory production techniques were developed in pre-industrial times; before

17250-444: The standardization of cannon design in the late 18th century. He streamlined production and management of cannonballs and cannons by limiting them to only three calibers, and he improved their effectiveness by requiring more spherical ammunition. Redesigning these weapons to use interchangeable wheels, screws, and axles simplified mass production and repair. In the Industrial Revolution , simple mass production techniques were used at

17388-523: The stereotype of their ingroups and outgroups to suit context. Once an outgroup treats an ingroup member badly, they are more drawn to the members of their own group. This can be seen as members within a group are able to relate to each other though a stereotype because of identical situations. A person can embrace a stereotype to avoid humiliation such as failing a task and blaming it on a stereotype. Stereotypes are an indicator of ingroup consensus. When there are intragroup disagreements over stereotypes of

17526-409: The students' responses to their attitudes although it had been made clear in the video that students had no choice about their position. Participants reported that group membership, i.e., the department that the students belonged to, affected the students' opinions about euthanasia. Law students were perceived to be more in favor of euthanasia than students from different departments despite the fact that

17664-491: The target person on several trait scales. Results showed that participants who received a high proportion of racial words rated the target person in the story as significantly more hostile than participants who were presented with a lower proportion of words related to the stereotype. This effect held true for both high- and low-prejudice subjects (as measured by the Modern Racism Scale). Thus, the racial stereotype

17802-450: The target person on the negative stereotypic dimensions and decreased them on the positive dimension whereas low-prejudice subjects tended in the opposite direction. The results suggest that the level of prejudice and stereotype endorsement affects people's judgements when the category – and not the stereotype per se – is primed. Research has shown that people can be trained to activate counterstereotypic information and thereby reduce

17940-727: The ubiquity of stereotypes and it was suggested to regard stereotypes as collective group beliefs, meaning that people who belong to the same social group share the same set of stereotypes. Modern research asserts that full understanding of stereotypes requires considering them from two complementary perspectives: as shared within a particular culture/subculture and as formed in the mind of an individual person. Stereotyping can serve cognitive functions on an interpersonal level, and social functions on an intergroup level. For stereotyping to function on an intergroup level (see social identity approaches: social identity theory and self-categorization theory ), an individual must see themselves as part of

18078-513: The uncertain labour of one hundred and ten. By 1808, annual production from the 45 machines had reached 130,000 blocks and some of the equipment was still in operation as late as the mid-twentieth century. Mass production techniques were also used to rather limited extent to make clocks and watches, and to make small arms, though parts were usually non-interchangeable. Though produced on a very small scale, Crimean War gunboat engines designed and assembled by John Penn of Greenwich are recorded as

18216-593: Was activated even for low-prejudice individuals who did not personally endorse it. Studies using alternative priming methods have shown that the activation of gender and age stereotypes can also be automatic. Subsequent research suggested that the relation between category activation and stereotype activation was more complex. Lepore and Brown (1997), for instance, noted that the words used in Devine's study were both neutral category labels (e.g., "Blacks") and stereotypic attributes (e.g., "lazy"). They argued that if only

18354-403: Was described as being higher in status than the other. In a second study, subjects rated actual groups – the poor and wealthy, women and men – in the United States in terms of their competence. Subjects who scored high on the measure of correspondence bias stereotyped the poor, women, and the fictitious lower-status Pacific Islanders as incompetent whereas they stereotyped the wealthy, men, and

18492-667: Was developed by Galileo Ferraris , Nikola Tesla and Westinghouse , Mikhail Dolivo-Dobrovolsky and others. Electrification of factories was fastest between 1900 and 1930, aided by the establishment of electric utilities with central stations and the lowering of electricity prices from 1914 to 1917. Electric motors were several times more efficient than small steam engines because central station generation were more efficient than small steam engines and because line shafts and belts had high friction losses. Electric motors also allowed more flexibility in manufacturing and required less maintenance than line shafts and belts. Many factories saw

18630-605: Was greatly enhanced with high-speed steel and later very hard materials such as tungsten carbide for cutting edges. Fabrication using steel components was aided by the development of electric welding and stamped steel parts, both which appeared in industry in about 1890. Plastics such as polyethylene , polystyrene and polyvinyl chloride (PVC) can be easily formed into shapes by extrusion , blow molding or injection molding , resulting in very low cost manufacture of consumer products, plastic piping, containers and parts. An influential article that helped to frame and popularize

18768-430: Was not distinctive at the time of presentation, but was considered distinctive at the time of judgement. Once a person judges non-distinctive information in memory to be distinctive, that information is re-encoded and re-represented as if it had been distinctive when it was first processed. One explanation for why stereotypes are shared is that they are the result of a common environment that stimulates people to react in

18906-430: Was used to handle 150 dozen bottles at a time where previously a hand truck would carry six dozen. Electric mixers replaced men with shovels handling sand and other ingredients that were fed into the glass furnace. An electric overhead crane replaced 36 day laborers for moving heavy loads across the factory. According to Henry Ford : The provision of a whole new system of electric generation emancipated industry from

19044-625: Was used to justify European colonialism in Africa, India, and China. An assumption is that people want their ingroup to have a positive image relative to outgroups, and so people want to differentiate their ingroup from relevant outgroups in a desirable way. If an outgroup does not affect the ingroup's image, then from an image preservation point of view, there is no point for the ingroup to be positively distinct from that outgroup. People can actively create certain images for relevant outgroups by stereotyping. People do so when they see that their ingroup

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