Group-think
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Groupthink is a psychological
phenomenon A phenomenon ( phenomena), sometimes spelled phaenomenon, is an observable Event (philosophy), event. The term came into its modern Philosophy, philosophical usage through Immanuel Kant, who contrasted it with the noumenon, which ''cannot'' be ...
that occurs within a
group of people In the social sciences, a social group is defined as two or more people who interact with one another, share similar characteristics, and collectively have a sense of unity. Regardless, social groups come in a myriad of sizes and varieties. Fo ...
in which the desire for harmony or
conformity Conformity or conformism is the act of matching attitudes, beliefs, and behaviors to social group, group norms, politics or being like-minded. Social norm, Norms are implicit, specific rules, guidance shared by a group of individuals, that guide t ...
in the group results in an irrational or dysfunctional
decision-making In psychology, decision-making (also spelled decision making and decisionmaking) is regarded as the Cognition, cognitive process resulting in the selection of a belief or a course of action among several possible alternative options. It could be ...
outcome. Cohesiveness, or the desire for cohesiveness, in a group may produce a tendency among its members to agree at all costs. This causes the group to minimize conflict and reach a consensus decision without critical evaluation. Groupthink is a construct of
social psychology Social psychology is the methodical study of how thoughts, feelings, and behaviors are influenced by the actual, imagined, or implied presence of others. Although studying many of the same substantive topics as its counterpart in the field ...
but has an extensive reach and influences literature in the fields of
communication studies Communication studies (or communication science) is an academic discipline that deals with processes of human communication and behavior, patterns of communication in interpersonal relationships, social interactions and communication in differ ...
,
political science Political science is the scientific study of politics. It is a social science dealing with systems of governance and Power (social and political), power, and the analysis of political activities, political philosophy, political thought, polit ...
,
management Management (or managing) is the administration of organizations, whether businesses, nonprofit organizations, or a Government agency, government bodies through business administration, Nonprofit studies, nonprofit management, or the political s ...
, and
organizational theory Organizational theory refers to a series of interrelated concepts that involve the sociological study of the structures and operations of formal social organizations. Organizational theory also seeks to explain how interrelated units of organiza ...
, as well as important aspects of deviant religious
cult Cults are social groups which have unusual, and often extreme, religious, spiritual, or philosophical beliefs and rituals. Extreme devotion to a particular person, object, or goal is another characteristic often ascribed to cults. The term ...
behaviour.


Overview

Groupthink is sometimes stated to occur (more broadly) within natural groups within the community, for example to explain the lifelong different mindsets of those with differing political views (such as "
conservatism Conservatism is a Philosophy of culture, cultural, Social philosophy, social, and political philosophy and ideology that seeks to promote and preserve traditional institutions, Convention (norm), customs, and Value (ethics and social science ...
" and "
liberalism Liberalism is a Political philosophy, political and moral philosophy based on the Individual rights, rights of the individual, liberty, consent of the governed, political equality, the right to private property, and equality before the law. ...
" in the U.S. political context or the purported benefits of team work vs. work conducted in solitude). However, this conformity of viewpoints within a group does not mainly involve deliberate
group decision-making Group decision-making (also known as collaborative decision-making or collective decision-making) is a situation faced when individuals collectively make a choice from the alternatives before them. The decision is then no longer attributable to ...
, and might be better explained by the collective
confirmation bias Confirmation bias (also confirmatory bias, myside bias, or congeniality bias) is the tendency to search for, interpret, favor and recall information in a way that confirms or supports one's prior beliefs or Value (ethics and social sciences), val ...
of the individual members of the group. The term was coined in 1952 by William H. Whyte Jr. Most of the initial research on groupthink was conducted by
Irving Janis Irving Lester Janis (May 26, 1918 – November 15, 1990) was an American research psychologist at Yale University and a professor emeritus at the University of California, Berkeley most famous for his theory of "groupthink", which described the ...
, a research psychologist from
Yale University Yale University is a Private university, private Ivy League research university in New Haven, Connecticut, United States. Founded in 1701, Yale is the List of Colonial Colleges, third-oldest institution of higher education in the United Stat ...
. Janis published an influential book in 1972, which was revised in 1982. Janis used the
Bay of Pigs The Bay of Pigs () is an inlet of the Gulf of Cazones, located on the southern coast of Cuba. By 1910 it was included in Santa Clara Province, and then to Las Villas Province by 1961, but in 1976, it was reassigned to Matanzas Province, when ...
disaster (the failed invasion of Castro's Cuba in 1961) and the Japanese attack on Pearl Harbor in 1941 as his two prime case studies. Later studies have evaluated and reformulated his groupthink model. Groupthink requires individuals to avoid raising
controversial Controversy (, ) is a state of prolonged public dispute or debate, usually concerning a matter of conflicting opinion or point of view. The word was coined from the Latin '' controversia'', as a composite of ''controversus'' – "turned in an opp ...
issues or alternative solutions, and there is loss of individual creativity, uniqueness and independent thinking. The dysfunctional
group dynamics Group dynamics is a system of behaviors and psychological processes occurring within a social group (''intra''group dynamics), or between social groups ( ''inter''group dynamics). The study of group dynamics can be useful in understanding decision ...
of the "
ingroup In social psychology and sociology, an in-group is a social group to which a person psychologically identifies as being a member. By contrast, an out-group is a social group with which an individual does not identify. People may for example ...
" produces an "illusion of invulnerability" (an inflated certainty that the right decision has been made). Thus the "ingroup" significantly overrates its own abilities in decision-making and significantly underrates the abilities of its opponents (the "
outgroup Outgroup may refer to: * Outgroup (cladistics), an evolutionary-history concept * Outgroup (sociology) In social psychology and sociology, an in-group is a social group to which a person psychologically identifies as being a member. By cont ...
"). Furthermore, groupthink can produce dehumanizing actions against the "outgroup". Members of a group can often feel under
peer pressure Peer pressure is a direct or indirect influence on peers, i.e., members of social groups with similar interests and experiences, or social statuses. Members of a peer group are more likely to influence a person's beliefs, values, religion and beh ...
to "go along with the crowd" for fear of "rocking the boat" or of how their speaking out will be perceived by the rest of the group. Group interactions tend to favor clear and harmonious agreements and it can be a cause for concern when little to no new innovations or arguments for better policies, outcomes and structures are called to question. (McLeod). Groupthink can often be referred to as because group activities and group projects in general make it extremely easy to pass on not offering constructive opinions. Some methods that have been used to counteract group think in the past are selecting teams from more diverse backgrounds, and even mixing men and women for groups (Kamalnath). Groupthink can be considered by many to be a detriment to companies, organizations and in any work situations. Most positions that are senior level need individuals to be independent in their thinking. There is a positive correlation found between outstanding executives and decisiveness (Kelman). Groupthink also prohibits an organization from moving forward and innovating if no one ever speaks up and says something could be done differently. Antecedent factors such as
group cohesiveness Group cohesiveness, also called group cohesion, social harmony or social cohesion, is the degree or strength of bonds linking members of a social group to one another and to the group as a whole. Although cohesion is a multi-faceted process, it ...
, faulty group structure, and situational context (e.g., community panic) play into the likelihood of whether or not groupthink will impact the decision-making process.


History

'' William H. Whyte Jr. derived the term from George Orwell's ''
Nineteen Eighty-Four ''Nineteen Eighty-Four'' (also published as ''1984'') is a dystopian novel and cautionary tale by the English writer George Orwell. It was published on 8 June 1949 by Secker & Warburg as Orwell's ninth and final completed book. Thematically ...
'', and popularized it in 1952 in ''Fortune'' magazine: Groupthink was Whyte's diagnosis of the malaise affecting both the study and practice of management (and, by association, America) in the 1950s. Whyte was dismayed that employees had subjugated themselves to the tyranny of groups, which crushed individuality and were instinctively hostile to anything or anyone that challenged the collective view. American psychologist
Irving Janis Irving Lester Janis (May 26, 1918 – November 15, 1990) was an American research psychologist at Yale University and a professor emeritus at the University of California, Berkeley most famous for his theory of "groupthink", which described the ...
(Yale University) pioneered the initial research on the groupthink theory. He does not cite Whyte, but coined the term again by analogy with "
doublethink Doublethink is a process of indoctrination in which subjects are expected to simultaneously accept two conflicting beliefs as truth, often at odds with their own memory or sense of reality. Doublethink is related to, but differs from, hypocris ...
" and similar terms that were part of the newspeak vocabulary in the novel ''
Nineteen Eighty-Four ''Nineteen Eighty-Four'' (also published as ''1984'') is a dystopian novel and cautionary tale by the English writer George Orwell. It was published on 8 June 1949 by Secker & Warburg as Orwell's ninth and final completed book. Thematically ...
'' by George Orwell. He initially defined groupthink as follows: He went on to write: Janis set the foundation for the study of groupthink starting with his research in the American Soldier Project where he studied the effect of extreme stress on group cohesiveness. After this study he remained interested in the ways in which people make decisions under external threats. This interest led Janis to study a number of "disasters" in
American foreign policy The officially stated goals of the foreign policy of the United States of America, including all the bureaus and offices in the United States Department of State, as mentioned in the ''Foreign Policy Agenda'' of the Department of State, are ...
, such as failure to anticipate the
Japanese attack on Pearl Harbor The attack on Pearl HarborAlso known as the Battle of Pearl Harbor was a surprise military strike by the Empire of Japan on the United States Pacific Fleet at its naval base at Pearl Harbor on Oahu, Hawaii, on December 7, 1941. At the tim ...
(1941); the
Bay of Pigs Invasion The Bay of Pigs Invasion (, sometimes called or after the Playa Girón) was a failed military landing operation on the southwestern coast of Cuba in April 1961 by the United States of America and the Cuban Democratic Revolutionary Front ...
fiasco (1961); and the prosecution of the
Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
(1964–67) by President
Lyndon Johnson Lyndon Baines Johnson (; August 27, 1908January 22, 1973), also known as LBJ, was the 36th president of the United States, serving from 1963 to 1969. He became president after assassination of John F. Kennedy, the assassination of John F. Ken ...
. He concluded that in each of these cases, the decisions occurred largely because of groupthink, which prevented contradictory views from being expressed and subsequently evaluated. After the publication of Janis' book ''Victims of Groupthink'' in 1972, and a revised edition with the title ''Groupthink: Psychological Studies of Policy Decisions and Fiascoes'' in 1982, the concept of groupthink was used to explain many other faulty decisions in history. These events included
Nazi Germany Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...
's decision to invade the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
in 1941, the
Watergate scandal The Watergate scandal was a major political scandal in the United States involving the Presidency of Richard Nixon, administration of President Richard Nixon. The scandal began in 1972 and ultimately led to Resignation of Richard Nixon, Nix ...
and others. Despite the popularity of the concept of groupthink, fewer than two dozen studies addressed the phenomenon itself following the publication of ''Victims of Groupthink'', between the years 1972 and 1998. This was surprising considering how many fields of interests it spans, which include
political science Political science is the scientific study of politics. It is a social science dealing with systems of governance and Power (social and political), power, and the analysis of political activities, political philosophy, political thought, polit ...
, communications,
organizational studies Organization studies (also called organization science or organizational studies) is the academic field interested in a ''collective activity, and how it relates to organization, organizing, and management''. It is "the examination of how individ ...
,
social psychology Social psychology is the methodical study of how thoughts, feelings, and behaviors are influenced by the actual, imagined, or implied presence of others. Although studying many of the same substantive topics as its counterpart in the field ...
, management, strategy, counseling, and marketing. One can most likely explain this lack of follow-up in that group research is difficult to conduct, groupthink has many independent and dependent variables, and it is unclear "how to translate roupthink'stheoretical concepts into observable and quantitative constructs". Nevertheless, outside research psychology and sociology, wider culture has come to detect groupthink in observable situations, for example: * " ..critics of Twitter point to the predominance of the hive mind in such social media, the kind of groupthink that submerges independent thinking in favor of conformity to the group, the collective" * " ..leaders often have beliefs which are very far from matching reality and which can become more extreme as they are encouraged by their followers. The predilection of many cult leaders for abstract, ambiguous, and therefore unchallengeable ideas can further reduce the likelihood of
reality testing Reality testing is the psychotherapeutic function by which the objective or real world and one's relationship to it are reflected on and evaluated by the observer. This process of distinguishing the internal world of thoughts and feelings from the ...
, while the intense
milieu control Milieu control is a term popularized by psychiatrist Robert Jay Lifton to describe tactics that control environment and human communication through the use of social pressure and group language. This includes tactics such as dogma, protocols, innue ...
exerted by cults over their members means that most of the reality available for testing is supplied by the group environment. This is seen in the phenomenon of 'groupthink', alleged to have occurred, notoriously, during the Bay of Pigs fiasco." * "Groupthink by Compulsion .. oupthink at least implies voluntarism. When this fails, the organization is not above outright intimidation. ..In nationwide telecommunications company refusal by the new hires to cheer on command incurred consequences not unlike the indoctrination and brainwashing techniques associated with a Soviet-era gulag."


Symptoms

To make groupthink testable,
Irving Janis Irving Lester Janis (May 26, 1918 – November 15, 1990) was an American research psychologist at Yale University and a professor emeritus at the University of California, Berkeley most famous for his theory of "groupthink", which described the ...
devised eight symptoms indicative of groupthink: Type I: Overestimations of the group — its power and morality *''Illusions of invulnerability'' creating excessive optimism and encouraging risk taking. *''Unquestioned belief'' in the
morality Morality () is the categorization of intentions, Decision-making, decisions and Social actions, actions into those that are ''proper'', or ''right'', and those that are ''improper'', or ''wrong''. Morality can be a body of standards or principle ...
of the group, causing members to ignore the consequences of their actions. Type II: Closed-mindedness *'' Rationalizing warnings'' that might challenge the group's assumptions. *''
Stereotyping In social psychology, 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 ...
'' those who are opposed to the group as weak, evil, biased, spiteful, impotent, or stupid. Type III: Pressures toward uniformity *''
Self-censorship Self-censorship is the act of censoring or classifying one's own discourse, typically out of fear or deference to the perceived preferences, sensibilities, or infallibility of others, and often without overt external pressure. Self-censorship is c ...
'' of ideas that deviate from the apparent group consensus. *''Illusions of unanimity'' among group members, silence is viewed as agreement. *''Direct pressure'' to conform placed on any member who questions the group, couched in terms of "disloyalty". *'' Mindguards''— self-appointed members who shield the group from dissenting information. When a group exhibits most of the symptoms of groupthink, the consequences of a failing decision process can be expected: incomplete analysis of the other options, incomplete analysis of the objectives, failure to examine the risks associated with the favored choice, failure to reevaluate the options initially rejected, poor information research, selection bias in available information processing, failure to prepare for a back-up plan.


Causes

Janis identified three antecedent conditions to groupthink: * ''High
group cohesiveness Group cohesiveness, also called group cohesion, social harmony or social cohesion, is the degree or strength of bonds linking members of a social group to one another and to the group as a whole. Although cohesion is a multi-faceted process, it ...
'': Cohesiveness is the main factor that leads to groupthink. Groups that lack cohesiveness can of course make bad decisions, but they do not experience groupthink. In a cohesive group, members avoid speaking out against decisions, avoid arguing with others, and work towards maintaining friendly relationships in the group. If cohesiveness gets to such a level that there are no longer disagreements between members, then the group is ripe for groupthink. ** ''
Deindividuation Deindividuation is a concept in social psychology that is generally thought of as the loss of self-awareness in groups, although this is a matter of contention (see below). For the social psychologist, the level of analysis is the individual in ...
'': Group cohesiveness becomes more important than individual freedom of expression. ** ''Illusions of unanimity'': Members perceive falsely that everyone agrees with the group's decision; silence is seen as consent. Janis noted that the unity of group members was mere illusion. Members may disagree with the organizations' decision, but go along with the group for many reasons, such as maintaining their group status and avoiding conflict with managers or workmates. Such members think that suggesting opinions contrary to others may lead to isolation from the group. * ''Structural faults'': The group is organized in ways that disrupt the communication of information, or the group carelessly makes decisions. ** ''Insulation of the group'': This can promote the development of unique, inaccurate perspectives on issues the group is dealing with, which can then lead to faulty solutions to the problem. ** ''Lack of impartial leadership'': Leaders control the group discussion, by planning what will be discussed, allowing only certain questions to be asked, and asking for opinions of only certain people in the group. Closed-style leadership is when leaders announce their opinions on the issue before the group discusses the issue together. Open-style leadership is when leaders withhold their opinion until a later time in the discussion. Groups with a closed-style leader are more biased in their judgments, especially when members had a high degree of certainty. ** ''Lack of norms requiring methodological procedures''. ** ''Homogeneity of members' social backgrounds and ideology''. * ''Situational context:'' ** ''Highly stressful external threats'': High-stake decisions can create tension and anxiety; group members may cope with this stress in irrational ways. Group members may rationalize their decision by exaggerating the positive consequences and minimizing the possible negative consequences. In attempt to minimize the stressful situation, the group decides quickly and allows little to no discussion or disagreement. Groups under high stress are more likely to make errors, lose focus of the ultimate goal, and use procedures that members know have not been effective in the past. ** ''Recent failures'': These can lead to low self-esteem, resulting in agreement with the group for fear of being seen as wrong. ** ''Excessive difficulties in
decision-making In psychology, decision-making (also spelled decision making and decisionmaking) is regarded as the Cognition, cognitive process resulting in the selection of a belief or a course of action among several possible alternative options. It could be ...
tasks''. ** ''
Moral dilemmas In philosophy, an ethical dilemma, also called an ethical paradox or moral dilemma, is a situation in which two or more conflicting moral imperatives, none of which overrides the other, confront an agent. A closely related definition characterizes ...
'' Although it is possible for a situation to contain all three of these factors, all three are not always present even when groupthink is occurring. Janis considered a high degree of cohesiveness to be the most important antecedent to producing groupthink, and always present when groupthink was occurring; however, he believed high cohesiveness would not always produce groupthink. A very cohesive group abides with all group
norm Norm, the Norm or NORM may refer to: In academic disciplines * Normativity, phenomenon of designating things as good or bad * Norm (geology), an estimate of the idealised mineral content of a rock * Norm (philosophy), a standard in normative e ...
s; but whether or not groupthink arises is dependent on what the group norms are. If the group encourages individual
dissent Dissent is an opinion, philosophy or sentiment of non-agreement or opposition to a prevailing idea or policy enforced under the authority of a government, political party or other entity or individual. A dissenting person may be referred to as ...
and alternative strategies to problem solving, it is likely that groupthink will be avoided even in a highly cohesive group. This means that high cohesion will lead to groupthink only if one or both of the other antecedents is present, situational context being slightly more likely than structural faults to produce groupthink. A 2018 study found that absence of a tenured project leader can also create conditions for groupthink to prevail. Presence of an "experienced" project manager can reduce the likelihood of groupthink by taking steps like critically analysing ideas, promoting open communication, encouraging diverse perspectives, and raising team awareness of groupthink symptoms. It was found that among people who have bicultural identity, those with highly integrated bicultural identity as opposed to less integrated were more prone to groupthink. In another 2022 study in Tanzania, Hofstede's cultural dimensions come into play. It was observed that in high power distance societies, individuals are hesitant to voice dissent, deferring to leaders' preferences in making decisions. Furthermore, as Tanzania is a collectivist society, community interests supersede those of individuals. The combination of high power distance and collectivism creates optimal conditions for groupthink to occur.


Prevention

As observed by Aldag and Fuller (1993), the groupthink phenomenon seems to rest on a set of unstated and generally restrictive assumptions: *The purpose of group problem solving is mainly to improve decision quality *Group problem solving is considered a rational process. *Benefits of group problem solving: **variety of perspectives **more information about possible alternatives **better decision reliability **dampening of biases **social presence effects *Groupthink prevents these benefits due to structural faults and provocative situational context *Groupthink prevention methods will produce better decisions *An illusion of well-being is presumed to be inherently dysfunctional. *Group pressures towards consensus lead to concurrence-seeking tendencies. It has been thought that groups with the strong ability to work together will be able to solve dilemmas in a quicker and more efficient fashion than an individual. Groups have a greater amount of resources which lead them to be able to store and retrieve information more readily and come up with more alternative solutions to a problem. There was a recognized downside to group
problem solving Problem solving is the process of achieving a goal by overcoming obstacles, a frequent part of most activities. Problems in need of solutions range from simple personal tasks (e.g. how to turn on an appliance) to complex issues in business an ...
in that it takes groups more time to come to a decision and requires that people make compromises with each other. However, it was not until the research of Janis appeared that anyone really considered that a highly cohesive group could impair the group's ability to generate quality decisions. Tight-knit groups may appear to make decisions better because they can come to a consensus quickly and at a low energy cost; however, over time this process of decision-making may decrease the members' ability to think critically. It is, therefore, considered by many to be important to combat the effects of groupthink. According to Janis, decision-making groups are not necessarily destined to groupthink. He devised ways of preventing groupthink: *Leaders should assign each member the role of "critical evaluator". This allows each member to freely air objections and doubts. *Leaders should not express an opinion when assigning a task to a group. *Leaders should absent themselves from many of the group meetings to avoid excessively influencing the outcome. *The organization should set up several independent groups, working on the same problem. *All effective alternatives should be examined. *Each member should discuss the group's ideas with trusted people outside of the group. *The group should invite outside experts into meetings. Group members should be allowed to discuss with and question the outside experts. *At least one group member should be assigned the role of
devil's advocate The (Latin for Devil's advocate) is a former official position within the Catholic Church, the Promoter of the Faith: one who "argued against the canonization (sainthood) of a candidate to uncover any character flaws or misrepresentation of th ...
. This should be a different person for each meeting. The devil's advocate in a group may provide questions and insight which contradict the majority group in order to avoid groupthink decisions. A study by Ryan Hartwig confirms that the devil's advocacy technique is very useful for group problem-solving. It allows for conflict to be used in a way that is most-effective for finding the best solution so that members will not have to go back and find a different solution if the first one fails. Hartwig also suggests that the devil's advocacy technique be incorporated with other group decision-making models such as the functional theory to find and evaluate alternative solutions. The main idea of the devil's advocacy technique is that somewhat structured conflict can be facilitated to not only reduce groupthink, but to also solve problems. Diversity of all kinds is also instrumental in preventing groupthink. Individuals with varying backgrounds, thought, professional and life experiences etc. can offer unique perspectives and challenge assumptions. In a 2004 study, a diverse team of problem-solver outperformed a team consisting of best problem solvers as they start to think alike. Psychological safety, emphasized by Edmondson and Lei and Hirak et al., is crucial for effective group performance. It involves creating an environment that encourages learning and removes barriers perceived as threats by team members. Edmondson et al. demonstrated variations in psychological safety based on work type, hierarchy, and leadership effectiveness, highlighting its importance in employee development and fostering a culture of learning within organizations. A similar situation to groupthink is the
Abilene paradox The Abilene paradox is a collective fallacy, in which a group of people collectively decide on a course of action that is counter to the preferences of most or all individuals in the group, while each individual believes it to be aligned with the ...
, another phenomenon that is detrimental when working in groups. When organizations fall into an Abilene paradox, they take actions in contradiction to what their perceived goals may be and therefore defeat the very purposes they are trying to achieve. Failure to communicate desires or beliefs can cause an Abilene paradox.


Examples

The
Watergate scandal The Watergate scandal was a major political scandal in the United States involving the Presidency of Richard Nixon, administration of President Richard Nixon. The scandal began in 1972 and ultimately led to Resignation of Richard Nixon, Nix ...
is an example of this. Before the scandal had occurred, a meeting took place where they discussed the issue. One of Nixon's campaign aides was unsure if he should speak up and give his input. If he had voiced his disagreement with the group's decision, it is possible that the scandal could have been avoided. After the Bay of Pigs invasion fiasco, President
John F. Kennedy John Fitzgerald Kennedy (May 29, 1917 – November 22, 1963), also known as JFK, was the 35th president of the United States, serving from 1961 until his assassination in 1963. He was the first Roman Catholic and youngest person elected p ...
sought to avoid groupthink during the
Cuban Missile Crisis The Cuban Missile Crisis, also known as the October Crisis () in Cuba, or the Caribbean Crisis (), was a 13-day confrontation between the governments of the United States and the Soviet Union, when American deployments of Nuclear weapons d ...
using "vigilant appraisal". During meetings, he invited outside experts to share their viewpoints, and allowed group members to question them carefully. He also encouraged group members to discuss possible solutions with trusted members within their separate departments, and he even divided the group up into various sub-groups, to partially break the group cohesion. Kennedy was deliberately absent from the meetings, so as to avoid pressing his own opinion. Cass Sunstein reports that
introvert Extraversion and introversion are a central trait dimension in human personality theory. The terms were introduced into psychology by Carl Jung, though both the popular understanding and current psychological usage are not the same as Jung's o ...
s can sometimes be silent in meetings with
extrovert Extraversion and introversion are a central trait dimension in human personality theory. The terms were introduced into psychology by Carl Jung, though both the popular understanding and current psychological usage are not the same as Jung's o ...
s; he recommends explicitly asking for each person's opinion, either during the meeting or afterwards in one-on-one sessions. Sunstein points to studies showing groups with a high level of internal socialization and happy talk are more prone to bad investment decisions due to groupthink, compared with groups of investors who are relative strangers and more willing to be argumentative. To avoid
group polarization In social psychology, group polarization refers to the tendency for a group to make decisions that are more extreme than the initial inclination of its members. These more extreme decisions are towards greater risk if individuals' initial tendenci ...
, where discussion with like-minded people drives an outcome further to an extreme than any of the individuals favored before the discussion, he recommends creating heterogeneous groups which contain people with different points of view. Sunstein also points out that people arguing a side they do not sincerely believe (in the role of devil's advocate) tend to be much less effective than a sincere argument. This can be accomplished by dissenting individuals, or a group like a
Red Team A red team is a group that simulates an adversary, attempts a physical or digital intrusion against an organization at the direction of that organization, then reports back so that the organization can improve their defenses. Red teams work fo ...
that is expected to pursue an alternative strategy or goal "for real".


Empirical findings and meta-analysis

Testing groupthink in a laboratory is difficult because synthetic settings remove groups from real social situations, which ultimately changes the variables conducive or inhibitive to groupthink. Because of its subjective nature, researchers have struggled to measure groupthink as a complete phenomenon, instead frequently opting to measure its particular factors. These factors range from and focus on group and situational aspects. Park (1990) found that "only 16 empirical studies have been published on groupthink", and concluded that they "resulted in only partial support of his anis'shypotheses". Park concludes, "despite Janis' claim that group cohesiveness is the major necessary antecedent factor, no research has shown a significant main effect of cohesiveness on groupthink." Park also concludes that research does not support Janis' claim that cohesion and leadership style interact to produce groupthink symptoms. Park presents a summary of the results of the studies analyzed. According to Park, a study by Huseman and Drive (1979) indicates groupthink occurs in both small and large decision-making groups within businesses. This results partly from group isolation within the business. Manz and Sims (1982) conducted a study showing that autonomous work groups are susceptible to groupthink symptoms in the same manner as decisions making groups within businesses. Fodor and Smith (1982) produced a study revealing that group leaders with high power motivation create atmospheres more susceptible to groupthink. Leaders with high power motivation possess characteristics similar to leaders with a "closed" leadership style—an unwillingness to respect dissenting opinion. The same study indicates that level of group cohesiveness is insignificant in predicting groupthink occurrence. Park summarizes a study performed by Callaway, Marriott, and Esser (1985) in which groups with highly dominant members "made higher quality decisions, exhibited lowered state of anxiety, took more time to reach a decision, and made more statements of disagreement/agreement". Overall, groups with highly dominant members expressed characteristics inhibitory to groupthink. If highly dominant members are considered equivalent to leaders with high power motivation, the results of Callaway, Marriott, and Esser contradict the results of Fodor and Smith. A study by Leana (1985) indicates the interaction between level of group cohesion and leadership style is completely insignificant in predicting groupthink. This finding refutes Janis' claim that the factors of cohesion and leadership style interact to produce groupthink. Park summarizes a study by McCauley (1989) in which structural conditions of the group were found to predict groupthink while situational conditions did not. The structural conditions included group insulation, group homogeneity, and promotional leadership. The situational conditions included group cohesion. These findings refute Janis' claim about group cohesiveness predicting groupthink. Overall, studies on groupthink have largely focused on the factors (antecedents) that predict groupthink. Groupthink occurrence is often measured by number of ideas/solutions generated within a group, but there is no uniform, concrete standard by which researchers can objectively conclude groupthink occurs. The studies of groupthink and groupthink antecedents reveal a mixed body of results. Some studies indicate group cohesion and leadership style to be powerfully predictive of groupthink, while other studies indicate the insignificance of these factors. Group homogeneity and group insulation are generally supported as factors predictive of groupthink.


Case studies


Politics and military

Groupthink can have a strong hold on political decisions and military operations, which may result in enormous wastage of human and material resources. Highly qualified and experienced politicians and military commanders sometimes make very poor decisions when in a suboptimal group setting. Scholars such as Janis and Raven attribute political and military fiascoes, such as the
Bay of Pigs Invasion The Bay of Pigs Invasion (, sometimes called or after the Playa Girón) was a failed military landing operation on the southwestern coast of Cuba in April 1961 by the United States of America and the Cuban Democratic Revolutionary Front ...
, the
Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
, and the
Watergate scandal The Watergate scandal was a major political scandal in the United States involving the Presidency of Richard Nixon, administration of President Richard Nixon. The scandal began in 1972 and ultimately led to Resignation of Richard Nixon, Nix ...
, to the effect of groupthink. More recently, Dina Badie argued that groupthink was largely responsible for the shift in the U.S. administration's view on
Saddam Hussein Saddam Hussein (28 April 1937 – 30 December 2006) was an Iraqi politician and revolutionary who served as the fifth president of Iraq from 1979 until Saddam Hussein statue destruction, his overthrow in 2003 during the 2003 invasion of Ira ...
that eventually led to the 2003 invasion of Iraq by the United States. After the
September 11 attacks The September 11 attacks, also known as 9/11, were four coordinated Islamist terrorist suicide attacks by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, crashing the first two into ...
, "stress, promotional leadership, and intergroup conflict" were all factors that gave rise to the occurrence of groupthink. Political case studies of groupthink serve to illustrate the impact that the occurrence of groupthink can have in today's political scene.


Bay of Pigs invasion and the Cuban Missile Crisis

The United States
Bay of Pigs Invasion The Bay of Pigs Invasion (, sometimes called or after the Playa Girón) was a failed military landing operation on the southwestern coast of Cuba in April 1961 by the United States of America and the Cuban Democratic Revolutionary Front ...
of April 1961 was the primary case study that Janis used to formulate his theory of groupthink. The invasion plan was initiated by the
Eisenhower Dwight David "Ike" Eisenhower (born David Dwight Eisenhower; October 14, 1890 – March 28, 1969) was the 34th president of the United States, serving from 1953 to 1961. During World War II, he was Supreme Commander of the Allied Expeditionar ...
administration, but when the
Kennedy Kennedy may refer to: People * Kennedy (surname), including any of several people with that surname ** Kennedy family, a prominent American political family that includes: *** Joseph P. Kennedy Sr. (1888–1969), American businessman, investor, ...
administration took over, it "uncritically accepted" the plan of the
Central Intelligence Agency The Central Intelligence Agency (CIA; ) is a civilian foreign intelligence service of the federal government of the United States tasked with advancing national security through collecting and analyzing intelligence from around the world and ...
(CIA). When some people, such as
Arthur M. Schlesinger Jr. Arthur Meier Schlesinger Jr. ( ; born Arthur Bancroft Schlesinger; October 15, 1917 – February 28, 2007) was an American historian, social critic, and public intellectual. The son of the influential historian Arthur M. Schlesinger Sr. and a ...
and Senator
J. William Fulbright James William Fulbright (April 9, 1905 – February 9, 1995) was an American politician, academic, and statesman who represented Arkansas in the United States Senate from 1945 until his resignation in 1974. , Fulbright is the longest-serving chair ...
, attempted to present their objections to the plan, the Kennedy team as a whole ignored these objections and kept believing in the morality of their plan. Eventually Schlesinger minimized his own doubts, performing
self-censorship Self-censorship is the act of censoring or classifying one's own discourse, typically out of fear or deference to the perceived preferences, sensibilities, or infallibility of others, and often without overt external pressure. Self-censorship is c ...
. The Kennedy team stereotyped
Fidel Castro Fidel Alejandro Castro Ruz (13 August 1926 – 25 November 2016) was a Cuban politician and revolutionary who was the leader of Cuba from 1959 to 2008, serving as the prime minister of Cuba from 1959 to 1976 and President of Cuba, president ...
and the Cubans by failing to question the CIA about its many false assumptions, including the ineffectiveness of Castro's air force, the weakness of Castro's army, and the inability of Castro to quell internal uprisings. Janis argued the fiasco that ensued could have been prevented if the Kennedy administration had followed the methods to preventing groupthink adopted during the
Cuban Missile Crisis The Cuban Missile Crisis, also known as the October Crisis () in Cuba, or the Caribbean Crisis (), was a 13-day confrontation between the governments of the United States and the Soviet Union, when American deployments of Nuclear weapons d ...
, which took place just one year later in October 1962. In the latter crisis, essentially the same political leaders were involved in decision-making, but this time they learned from their previous mistake of seriously under-rating their opponents.


Pearl Harbor

The
attack on Pearl Harbor The attack on Pearl HarborAlso known as the Battle of Pearl Harbor was a surprise military strike by the Empire of Japan on the United States Pacific Fleet at Naval Station Pearl Harbor, its naval base at Pearl Harbor on Oahu, Territory of ...
on December 7, 1941, is a prime example of groupthink. A number of factors such as shared illusions and rationalizations contributed to the lack of precaution taken by U.S. Navy officers based in Hawaii. The United States had intercepted Japanese messages and they discovered that Japan was arming itself for an offensive attack ''somewhere'' in the Pacific Ocean. Washington took action by warning officers stationed at
Pearl Harbor Pearl Harbor is an American lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. It was often visited by the naval fleet of the United States, before it was acquired from the Hawaiian Kingdom by the U.S. with the signing of the Reci ...
, but their warning was not taken seriously. They assumed that the
Empire of Japan The Empire of Japan, also known as the Japanese Empire or Imperial Japan, was the Japanese nation state that existed from the Meiji Restoration on January 3, 1868, until the Constitution of Japan took effect on May 3, 1947. From Japan–Kor ...
was taking measures in the event that their embassies and consulates in enemy territories were usurped. The U.S. Navy and Army in Pearl Harbor also shared rationalizations about why an attack was unlikely. Some of them included: * "The Japanese would never dare attempt a full-scale surprise assault against Hawaii because they would realize that it would precipitate an all-out war, which the United States would surely win." * "The Pacific Fleet concentrated at Pearl Harbor was a major deterrent against air or naval attack." * "Even if the Japanese were foolhardy enough to send their carriers to attack us he United States we could certainly detect and destroy them in plenty of time." * "No warships anchored in the shallow water of Pearl Harbor could ever be sunk by torpedo bombs launched from enemy aircraft."


Space Shuttle ''Challenger'' disaster

On January 28, 1986,
NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...
launched the space shuttle '' Challenger''. This was significant because a civilian, non-astronaut, high school teacher was to be the first American civilian in space. The space shuttle was perceived to be so safe as to make this possible. NASA's engineering and launch teams rely on teamwork. To launch the shuttle, individual team members must affirm each system is functioning nominally.
Morton Thiokol Thiokol was an American corporation concerned initially with rubber and related chemicals, and later with rocket and missile propulsion systems. Its name is a portmanteau of the Greek words for sulfur () and glue (), an allusion to the company's ...
engineers who designed and built the ''Challenger''s rocket boosters ignored warnings that cooler temperature during the day of the launch could result in failure and death of the crew. The
Space Shuttle Challenger Disaster On January 28, 1986, the Space Shuttle Challenger, Space Shuttle ''Challenger'' broke apart 73 seconds into its flight, killing all seven crew members aboard. The spacecraft disintegrated above the Atlantic Ocean, off the coast of Cape Can ...
grounded space shuttle flights for nearly three years. Ironic that this particular flight was to be a demonstration showing confidence in the safety of the space shuttle technology. The ''Challenger'' case was subject to a more quantitatively oriented test of Janis's groupthink model performed by Esser and Lindoerfer, who found clear signs of positive antecedents to groupthink in the critical decisions concerning the launch of the shuttle. The day of the launch was rushed for publicity reasons. NASA wanted to captivate and hold the attention of America. Having civilian teacher
Christa McAuliffe Sharon Christa McAuliffe ( Corrigan; September 2, 1948 – January 28, 1986) was an American teacher and astronaut from Concord, New Hampshire who died on the Space Shuttle ''Challenger'' on mission STS-51-L, where she was serving as a payloa ...
on board to broadcast a live lesson, and the possible mention by president Ronald Reagan in the State of the Union address, were opportunities NASA deemed critical to increasing interest in its potential civilian space flight program. The schedule NASA set out to meet was, however, self-imposed. It seemed incredible to many that an organization with a perceived history of successful management would have locked itself into a schedule it had no chance of meeting.


Corporate world

In the corporate world, ineffective and suboptimal group decision-making can negatively affect the health of a company and cause a considerable amount of monetary loss.


Swissair

Aaron Hermann and Hussain Rammal illustrate the detrimental role of groupthink in the collapse of
Swissair Swissair (German language, German: Schweizerische Luftverkehr-AG; French language, French: S.A. Suisse pour la Navigation Aérienne, stylised as swissair) was the Flag carrier, national airline of Switzerland between its founding in 1931 and ban ...
, a Swiss airline company that was thought to be so financially stable that it earned the title the "Flying Bank". The authors argue that, among other factors, Swissair carried two symptoms of groupthink: the belief that the group is invulnerable and the belief in the morality of the group. In addition, before the fiasco, the size of the company board was reduced, subsequently eliminating industrial expertise. This may have further increased the likelihood of groupthink. With the board members lacking expertise in the field and having somewhat similar background, norms, and values, the pressure to conform may have become more prominent. This phenomenon is called group homogeneity, which is an antecedent to groupthink. Together, these conditions may have contributed to the poor decision-making process that eventually led to Swissair's collapse.


Marks & Spencer and British Airways

Another example of groupthink from the corporate world is illustrated in the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
-based companies
Marks & Spencer Marks and Spencer plc (commonly abbreviated to M&S and colloquially known as Marks & Sparks or simply Marks) is a major British multinational retailer based in London, England, that specialises in selling clothing, beauty products, home produc ...
and
British Airways British Airways plc (BA) is the flag carrier of the United Kingdom. It is headquartered in London, England, near its main Airline hub, hub at Heathrow Airport. The airline is the second largest UK-based carrier, based on fleet size and pass ...
. The negative impact of groupthink took place during the 1990s as both companies released globalization expansion strategies. Researcher Jack Eaton's content analysis of media press releases revealed that all eight symptoms of groupthink were present during this period. The most predominant symptom of groupthink was the illusion of invulnerability as both companies underestimated potential failure due to years of profitability and success during challenging markets. Up until the consequence of groupthink erupted they were considered
blue chip Blue chip may refer to: * Blue casino token * Blue chip (stock market), a corporation with a national reputation for quality, reliability, and the ability to operate profitably * Blue chip (sports), collegiate athletes who are targeted by professio ...
s and darlings of the
London Stock Exchange The London Stock Exchange (LSE) is a stock exchange based in London, England. the total market value of all companies trading on the LSE stood at US$3.42 trillion. Its current premises are situated in Paternoster Square close to St Paul's Cath ...
. During 1998–1999 the price of Marks & Spencer shares fell from 590 to less than 300 and that of British Airways from 740 to 300. Both companies had previously been prominently featured in the UK press and media for more positive reasons, reflecting national pride in their undeniable sector-wide performance.


Sports

Recent literature of groupthink attempts to study the application of this concept beyond the framework of business and politics. One particularly relevant and popular arena in which groupthink is rarely studied is sports. The lack of literature in this area prompted Charles Koerber and Christopher Neck to begin a case-study investigation that examined the effect of groupthink on the decision of the
Major League Umpires Association The Major League Umpires Association (MLUA) was a union for the umpires of both the American League and the National League. It was formed in 1970. It was decertified and replaced by the World Umpires Association (now the Major League Baseball U ...
(MLUA) to stage a mass resignation in 1999. The decision was a failed attempt to gain a stronger negotiating stance against
Major League Baseball Major League Baseball (MLB) is a professional baseball league composed of 30 teams, divided equally between the National League (baseball), National League (NL) and the American League (AL), with 29 in the United States and 1 in Canada. MLB i ...
. Koerber and Neck suggest that three groupthink symptoms can be found in the decision-making process of the MLUA. First, the umpires overestimated the power that they had over the baseball league and the strength of their group's resolve. The union also exhibited some degree of closed-mindedness with the notion that MLB is the enemy. Lastly, there was the presence of self-censorship; some umpires who disagreed with the decision to resign failed to voice their dissent. These factors, along with other decision-making defects, led to a decision that was suboptimal and ineffective.


Recent developments


Ubiquity model

Researcher Robert Baron (2005) contends that the connection between certain antecedents which Janis believed necessary has not been demonstrated by the current collective body of research on groupthink. He believes that Janis' antecedents for groupthink are incorrect, and argues that not only are they "not necessary to provoke the symptoms of groupthink, but that they often will not even amplify such symptoms". As an alternative to Janis' model, Baron proposed a ubiquity model of groupthink. This model provides a revised set of antecedents for groupthink, including social identification, salient norms, and low
self-efficacy In psychology, self-efficacy is an individual's belief in their capacity to act in the ways necessary to reach specific goals. The concept was originally proposed by the psychologist Albert Bandura in 1977. Self-efficacy affects every area of hum ...
.


General group problem-solving (GGPS) model

Aldag and Fuller (1993) argue that the groupthink concept was based on a "small and relatively restricted sample" that became too broadly generalized. Furthermore, the concept is too rigidly staged and deterministic. Empirical support for it has also not been consistent. The authors compare groupthink model to findings presented by Maslow and
Piaget Piaget () may refer to: People with the surname * Édouard Piaget (18171910), Swiss entomologist * Jean Piaget (18961980), Swiss developmental psychologist * Paul Piaget (disambiguation), several people * Solange Piaget Knowles (born 1986), Ameri ...
; they argue that, in each case, the model incites great interest and further research that, subsequently, invalidate the original concept. Aldag and Fuller thus suggest a new model called the general group problem-solving (GGPS) model, which integrates new findings from groupthink literature and alters aspects of groupthink itself. The primary difference between the GGPS model and groupthink is that the former is more value neutral and more political.


Reexamination

Later scholars have re-assessed the merit of groupthink by reexamining case studies that Janis originally used to buttress his model. Roderick Kramer (1998) believed that, because scholars today have a more sophisticated set of ideas about the general decision-making process and because new and relevant information about the fiascos have surfaced over the years, a reexamination of the case studies is appropriate and necessary. He argues that new evidence does not support Janis' view that groupthink was largely responsible for President Kennedy's and President Johnson's decisions in the Bay of Pigs Invasion and U.S. escalated military involvement in the
Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
, respectively. Both presidents sought the advice of experts outside of their political groups more than Janis suggested. Kramer also argues that the presidents were the final decision-makers of the fiascos; while determining which course of action to take, they relied more heavily on their own
construals In social psychology, a construal is a way that people perceive, comprehend, and interpret their world, particularly the acts of others toward them. Researchers and theorists within virtually every sub-discipline of psychology have acknowledged the ...
of the situations than on any group-consenting decision presented to them. Kramer concludes that Janis' explanation of the two military issues is flawed and that groupthink has much less influence on group decision-making than is popularly believed. Groupthink, while it is thought to be avoided, does have some positive effects. Choi and Kim found that
group identity Collective identity or group identity is a shared sense of belonging to a group. This concept appears within a few social science fields. National identity is a simple example, though myriad groups exist which share a sense of identity. Like ma ...
traits such as believing in the group's moral superiority, were linked to less concurrence seeking, better decision-making, better team activities, and better team performance. This study also showed that the relationship between groupthink and defective decision making was insignificant. These findings mean that in the right circumstances, groupthink does not always have negative outcomes. It also questions the original theory of groupthink.


Reformulation

Scholars are challenging the original view of groupthink proposed by Janis. Whyte (1998) argues that a group's collective efficacy, i.e. confidence in its abilities, can lead to reduced vigilance and a higher risk tolerance, similar to how groupthink was described. McCauley (1998) proposes that the attractiveness of group members might be the most prominent factor in causing poor decisions. Turner and Pratkanis (1991) suggest that from social identity perspective, groupthink can be seen as a group's attempt to ward off potentially negative views of the group. Together, the contributions of these scholars have brought about new understandings of groupthink that help reformulate Janis' original model.


Sociocognitive theory

According to a theory many of the basic characteristics of groupthink – e.g., strong cohesion, indulgent atmosphere, and exclusive ethos – are the result of a special kind of mnemonic encoding (Tsoukalas, 2007). Members of tightly knit groups have a tendency to represent significant aspects of their community as
episodic memories Episodic memory is the memory of everyday events (such as times, location geography, associated emotions, and other contextual information) that can be explicitly stated or conjured. It is the collection of past personal experiences that occurred ...
and this has a predictable influence on their group behavior and collective ideology, as opposed to what happens when they are encoded as
semantic memories Semantic memory refers to general world knowledge that humans have accumulated throughout their lives. This general knowledge (word meanings, concepts, facts, and ideas) is intertwined in experience and dependent on culture. New concepts are lear ...
(which is common in formal and more loose group formations).


Collective illusions

According to scientist Todd Rose, Collective Illusions and Groupthink are linked concepts that show how social dynamics affect behavior. Groupthink occurs when individuals who are right about what the group wants, conform to the group's consensus. Collective illusions are a specific form of Groupthink where individuals mistakenly assume the group's wants, leading everyone to behave in ways that don't reflect their true preferences. Both the concepts involve social influence and conformity.


See also

*
Abilene paradox The Abilene paradox is a collective fallacy, in which a group of people collectively decide on a course of action that is counter to the preferences of most or all individuals in the group, while each individual believes it to be aligned with the ...
* Amity-enmity complex *
Asch conformity experiments In psychology, the Asch conformity experiments were, or the Asch paradigm was, a series of studies directed by Solomon Asch studying if and how individuals yielded to or defied a majority (sociology), majority group and the effect of such influenc ...
*
Bandwagon effect The bandwagon effect is a psychological phenomenon where people adopt certain behaviors, styles, or attitudes simply because others are doing so. More specifically, it is a cognitive bias by which public opinion or behaviours can alter due to ...
*
Brainwashing Brainwashing is the controversial idea that the human mind can be altered or controlled against a person's will by manipulative psychological techniques. Brainwashing is said to reduce its subject's ability to think critically or independently ...
*
Collective intelligence Collective intelligence (CI) is shared or group intelligence (GI) that Emergence, emerges from the collaboration, collective efforts, and competition of many individuals and appears in consensus decision making. The term appears in sociobiolog ...
*
Collective narcissism In social psychology, collective narcissism (or group narcissism) is the tendency to exaggerate the positive image and importance of a group to which one belongs. While the classic definition of narcissism focuses on the individual, ''collective ...
*
Democratic centralism Democratic centralism is the organisational principle of most communist parties, in which decisions are made by a process of vigorous and open debate amongst party membership, and are subsequently binding upon all members of the party. The co ...
*
Dunning–Kruger effect The Dunning–Kruger effect is a cognitive bias in which people with limited competence in a particular domain overestimate their abilities. It was first described by the psychologists David Dunning and Justin Kruger in 1999. Some researcher ...
*
Echo chamber (media) image:Hallraum TU Dresden 2009-06-21.jpg, Echo chamber of the Dresden University of Technology image:Hamilton Mausoleum Interior.jpg, Hamilton Mausoleum has a long-lasting unplanned echo An echo chamber is a hollow enclosure used to produce rever ...
*
Emotional contagion Emotional contagion is a form of social contagion that involves the spontaneous spread of emotions and related behaviors. Such emotional convergence can happen from one person to another, or in a larger group. Emotions can be shared across indivi ...
*
False consensus effect In psychology, the false consensus effect, also known as consensus bias, is a pervasive cognitive bias that causes people to overestimate the extent to which other people share their beliefs and views; it is the tendency to "see their own behavior ...
*
Filter bubble A filter bubble or ideological frame is a state of intellectual isolationTechnopediaDefinition – What does Filter Bubble mean?, Retrieved October 10, 2017, "....A filter bubble is the intellectual isolation, that can occur when websites make ...
* Group flow *
Group polarization In social psychology, group polarization refers to the tendency for a group to make decisions that are more extreme than the initial inclination of its members. These more extreme decisions are towards greater risk if individuals' initial tendenci ...
*
Group-serving bias In-group favoritism, sometimes known as in-group–out-group bias, in-group bias, intergroup bias, or in-group preference, is a pattern of favoring members of one's in-group over out-group members. This can be expressed in evaluation of others ...
*
Groupshift Groupshift is a phenomenon in which the initial positions of individual members of a group are exaggerated toward a more extreme position. When people are in groups, they make decisions about risk differently from when they are alone. The decision m ...
*
Herd behaviour Herd behavior is the behavior of individuals in a group acting collectively without centralized direction. Herd behavior occurs in animals in herds, Pack (canine), packs, bird flocks, fish schools, and so on, as well as in humans. Voting, Demon ...
*
Homophily Homophily () is a concept in sociology describing the tendency of individuals to associate and bond with similar others, as in the proverb "". The presence of homophily has been discovered in a vast array of network studies: over have observe ...
*
In-group favoritism In-group favoritism, sometimes known as in-group–out-group bias, in-group bias, intergroup bias, or in-group preference, is a pattern of favoring members of one's Ingroups and outgroups, in-group over out-group members. This can be expressed ...
*
Individualism Individualism is the moral stance, political philosophy, ideology, and social outlook that emphasizes the intrinsic worth of the individual. Individualists promote realizing one's goals and desires, valuing independence and self-reliance, and a ...
* Lollapalooza effect *
Mass psychology Crowd psychology (or mob psychology) is a subfield of social psychology which examines how the psychology of a group of people differs from the psychology of any one person within the group. The study of crowd psychology looks into the actions ...
*
Moral Man and Immoral Society ''Moral Man and Immoral Society: A Study in Ethics and Politics'' is a 1932 book by Reinhold Niebuhr, an American Protestant theologian. The thesis of the book is that people are more likely to sin as members of groups than as individuals. The boo ...
*
No soap radio "No soap radio" is a form of practical joke and an example of surreal comedy. The joke is a prank whereby the punch line has no relation to the body of the joke, but participants in the prank pretend otherwise. The effect is either to trick someo ...
*
Mob rule Mob rule or ochlocracy or mobocracy is a pejorative term describing an oppressive majoritarian form of government controlled by the common people through the intimidation of authorities. Ochlocracy is distinguished from democracy or similarl ...
*
Organizational dissent Organizational dissent is the "expression of disagreement or contradictory opinions about organizational practices and policies".Kassing, J. W. (1998)Development and Validation of the Organizational Dissent Scale/ref> Since dissent involves disagr ...
*
Positive psychology Positive psychology is the scientific study of conditions and processes that contribute to positive psychological states (e.g., contentment, joy), well-being, Positive psychology of relationships, positive relationships, and positive institutio ...
(relevantly, its criticism) *
Preference falsification Preference falsification is the act of misrepresenting a preference under perceived public pressure. It involves the selection of a publicly expressed preference that differs from the underlying privately held preference (or simply, a public prefer ...
*
Realistic conflict theory Realistic conflict theory (RCT), also known as realistic group conflict theory (RGCT), is a social psychological model of intergroup conflict. The theory explains how intergroup hostility can arise as a result of conflicting goals and competition ...
*
Risky shift In social psychology, group polarization refers to the tendency for a group to make decisions that are more extreme than the initial inclination of its members. These more extreme decisions are towards greater risk if individuals' initial tendenci ...
*
Scapegoating Scapegoating is the practice of singling out a person or group for unmerited blame and consequent negative treatment. Scapegoating may be conducted by individuals against individuals (e.g., "he did it, not me!"), individuals against groups (e.g ...
*
Social comparison theory Social comparison theory, initially proposed by social psychologist Leon Festinger in 1954, centers on the belief that individuals drive to gain accurate self-evaluations. The theory explains how individuals evaluate their opinions and abilities ...
*
Solidarity Solidarity or solidarism is an awareness of shared interests, objectives, standards, and sympathies creating a psychological sense of unity of groups or classes. True solidarity means moving beyond individual identities and single issue politics ...
*
Spiral of silence The spiral of silence theory is a political science and mass communication theory which states that an individual's perception of the distribution of public opinion influences that individual's willingness to express their own opinions. Also know ...
* System justification *
Team error Team Error refers to errors that occur in settings where multiple people are working together. Dependency increases the likelihood of human error due to interactions with other seemingly independent defense mechanisms. Engaging multiple people to p ...
* Three men make a tiger * Tone policing *
Tuckman's stages of group development The ''forming–storming–norming–performing'' model of group development was first proposed by Bruce Tuckman in 1965, who said that these phases are all necessary and inevitable in order for a team to grow, face up to challenges, tackle probl ...
*
Vendor lock-in In economics, vendor lock-in, also known as proprietary lock-in or customer lockin, makes a customer dependent on a vendor for products, unable to use another vendor without substantial switching costs. The use of open standards and alternati ...
*
Wishful thinking Wishful thinking is the formation of beliefs based on what might be pleasing to imagine, rather than on evidence, rationality, or reality. It is a product of resolving conflicts between belief and desire. Methodologies to examine wishful thin ...
*
Woozle effect The Woozle effect, also known as evidence by citation, occurs when a source is widely cited for a claim that the source does not adequately support, giving said claim undeserved credibility. If results are not replicated and no one notices that ...
;Diversity *
Cultural diversity Cultural diversity is the quality of diverse or different cultures, as opposed to Monoculturalism, monoculture. It has a variety of meanings in different contexts, sometimes applying to cultural products like art works in museums or entertainment ...
*
Multiculturalism Multiculturalism is the coexistence of multiple cultures. The word is used in sociology, in political philosophy, and colloquially. In sociology and everyday usage, it is usually a synonym for ''Pluralism (political theory), ethnic'' or cultura ...


References


Further reading


Articles

* * * * * * * * * * * * * *


Books

* * * * Martin, Everett Dean, ''The Behavior of Crowds, A Psychological Study'', Harper & Brothers Publishers, New York, 1920. * * * * * {{Nineteen Eighty-Four Conformity Group processes Consensus Cognitive biases Error