Deindividuation
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Deindividuation is a concept in
social psychology Social psychology is the scientific study of how thoughts, feelings, and behaviors are influenced by the real or imagined presence of other people or by social norms. Social psychologists typically explain human behavior as a result of the ...
that is generally thought of as the loss of
self-awareness In philosophy of self, self-awareness is the experience of one's own personality or individuality. It is not to be confused with consciousness in the sense of qualia. While consciousness is being aware of one's environment and body and lifest ...
in
groups A group is a number of persons or things that are located, gathered, or classed together. Groups of people * Cultural group, a group whose members share the same cultural identity * Ethnic group, a group whose members share the same ethnic ide ...
, although this is a matter of contention (see
below Below may refer to: *Earth * Ground (disambiguation) *Soil *Floor * Bottom (disambiguation) *Less than *Temperatures below freezing *Hell or underworld People with the surname *Ernst von Below (1863–1955), German World War I general *Fred Below ...
). For the social psychologist, the level of analysis is the individual in the context of a social situation. As such, social psychologists emphasize the role of internal psychological processes. Other social scientists, such as sociologists, are more concerned with broad social, economic, political, and historical factors that influence events in a given
society A society is a group of individuals involved in persistent social interaction, or a large social group sharing the same spatial or social territory, typically subject to the same political authority and dominant cultural expectations. Soc ...
.Aronson, Wilson, and Akert. Social Psychology. 7th ed. Rentice Hall:2010.


Overview

Theories of deindividuation propose that it is a psychological state of decreased self-evaluation and decreased evaluation apprehension causing antinormative and disinhibited behavior. Deindividuation theory seeks to provide an explanation for a variety of antinormative collective behavior, such as violent crowds, lynch mobs, etc.10.1037/0022-3514.33.2.1788 Deindividuation theory has also been applied to
genocide Genocide is the intentional destruction of a people—usually defined as an ethnic, national, racial, or religious group—in whole or in part. Raphael Lemkin coined the term in 1944, combining the Greek word (, "race, people") with the ...
and been posited as an explanation for antinormative behavior online and in
computer-mediated communication Computer-mediated communication (CMC) is defined as any human communication that occurs through the use of two or more electronic devices. While the term has traditionally referred to those communications that occur via computer-mediated forma ...
s. Although generally analyzed in the context of negative behaviors, such as mob violence and genocide, deindividuation has also been found to play a role in positive behaviors and experiences. There still exists some variation as to understanding the role of deindividuation in producing anti-normative behaviors, as well as understanding how contextual cues affect the rules of the deindividuation construct. Deindividuation is losing the sense of self in a group.


Major theoretical approaches and history

In contemporary
social psychology Social psychology is the scientific study of how thoughts, feelings, and behaviors are influenced by the real or imagined presence of other people or by social norms. Social psychologists typically explain human behavior as a result of the ...
, deindividuation refers to a diminishing of one's sense of individuality that occurs with behavior disjointed from personal or social standards of conduct. For example, someone who is an
anonymous Anonymous may refer to: * Anonymity, the state of an individual's identity, or personally identifiable information, being publicly unknown ** Anonymous work, a work of art or literature that has an unnamed or unknown creator or author * Anony ...
member of a mob will be more likely to act violently toward a police officer than a known
individual An individual is that which exists as a distinct entity. Individuality (or self-hood) is the state or quality of being an individual; particularly (in the case of humans) of being a person unique from other people and possessing one's own need ...
. In one sense, a deindividuated state may be considered appealing if someone is affected such that he or she feels free to behave impulsively without mind to potential consequences. However, deindividuation has also been linked to "violent and
anti-social behavior Antisocial behavior is a behavior that is defined as the violation of the rights of others by committing crime, such as stealing and physical attack in addition to other behaviors such as lying and manipulation. It is considered to be disrupti ...
."Roeckelein, Jon. Deindividuation theory. ''Elsevier's Dictionary of Psychological Theories''. Amsterdam: Elsevier B.V., 2006.


Classic theories

Gustave Le Bon Charles-Marie Gustave Le Bon (; 7 May 1841 – 13 December 1931) was a leading French polymath whose areas of interest included anthropology, psychology, sociology, medicine, invention, and physics. He is best known for his 1895 work '' The Crowd ...
was an early explorer of this phenomenon as a function of crowds. Le Bon introduced his
crowd psychology Crowd psychology, also known as mob psychology, is a branch of social psychology. Social psychologists have developed several theories for explaining the ways in which the psychology of a crowd differs from and interacts with that of the individ ...
theory in his 1895 publication ''The Crowd: A study of the Popular Mind''. The French psychologist characterized his posited effect of crowd mentality, whereby individual personalities become dominated by the collective mindset of the crowd. Le Bon viewed crowd behavior as "unanimous, emotional, and intellectually weak." He theorized that a loss of
personal responsibility In philosophy, moral responsibility is the status of morally deserving praise, blame, reward, or punishment for an act or omission in accordance with one's moral obligations. Deciding what (if anything) counts as "morally obligatory" is a pri ...
in crowds leads to an inclination to behave primitively and hedonistically by the entire group. This resulting mentality, according to Le Bon, belongs more to the collective than any individual, so that individual traits are submerged. Already, Le Bon was tending toward the conception of deindividuation as a state brought on by a lowering of
accountability Accountability, in terms of ethics and governance, is equated with answerability, blameworthiness, liability, and the expectation of account-giving. As in an aspect of governance, it has been central to discussions related to problems in the pub ...
, resulting from a degree of
anonymity Anonymity describes situations where the acting person's identity is unknown. Some writers have argued that namelessness, though technically correct, does not capture what is more centrally at stake in contexts of anonymity. The important idea he ...
due to membership within a crowd, where attention is shifted from the self to the more stimulating, external qualities of the
group A group is a number of persons or things that are located, gathered, or classed together. Groups of people * Cultural group, a group whose members share the same cultural identity * Ethnic group, a group whose members share the same ethnic ide ...
’s action (which may be extreme). Essentially, individuals of Le Bon's crowd are enslaved to the group's mindset and are capable of conducting the most
violent Violence is the use of physical force so as to injure, abuse, damage, or destroy. Other definitions are also used, such as the World Health Organization's definition of violence as "the intentional use of physical force or power, threatened ...
and heroic acts. Le Bon's group-level explanation of behavioral phenomena in crowds inspired further theories regarding collective psychology from
Freud Sigmund Freud ( , ; born Sigismund Schlomo Freud; 6 May 1856 – 23 September 1939) was an Austrian neurologist and the founder of psychoanalysis, a clinical method for evaluating and treating pathologies explained as originating in conflicts i ...
, McDougall, Blumer, and Allport. Festinger, Pepitone, and Newcomb revisited Le Bon's ideas in 1952, coining the term deindividuation to describe what happens when persons within a
group A group is a number of persons or things that are located, gathered, or classed together. Groups of people * Cultural group, a group whose members share the same cultural identity * Ethnic group, a group whose members share the same ethnic ide ...
are not treated as individuals. About deindividuation theory, a social psychological account of the individual in the crowd and an attempt to explain anti-normative collective action According to these theorists, whatever attracts each member to a particular group causes them to put more emphasis on the group than on individuals. This unaccountability inside a group has the effect of "reducing inner restraints and increasing behavior that is usually inhibited." Festinger et al. agreed with Le Bon's perception of behavior in a crowd in the sense that they believed individuals do become submerged into the crowd leading to their reduced
accountability Accountability, in terms of ethics and governance, is equated with answerability, blameworthiness, liability, and the expectation of account-giving. As in an aspect of governance, it has been central to discussions related to problems in the pub ...
. However, these relatively modern theorists distinguished deindividuation from crowd theory by reforming the idea that the loss of individuality within a crowd is replaced by the group's mindset. Instead, Festinger et al. argued that the loss of individuality leads to loss of control over internal or moral constraints.Postmes, T. & Spears, R. (1998)
Deindividuation and antinormative behavior: A meta-analysis
Psychological Bulletin, 123, 238-259.
Alternatively, R. C. Ziller (1964) argued that individuals are subject to deindividuation under more specific situational conditions. For instance, he suggested that under rewarding conditions, individuals have the learned incentive to exhibit individualized qualities in order to absorb credit for themselves; whereas, under punishing conditions, individuals have the learned tendency to become deindividuated through submergence into the group as a means of diffusing responsibility. P. G. Zimbardo (1969) suggested "the expression of normally inhibited behavior" may have both positive and negative consequences. He expanded the proposed realm of factors that contribute to deindividuation, beyond
anonymity Anonymity describes situations where the acting person's identity is unknown. Some writers have argued that namelessness, though technically correct, does not capture what is more centrally at stake in contexts of anonymity. The important idea he ...
and loss of
personal responsibility In philosophy, moral responsibility is the status of morally deserving praise, blame, reward, or punishment for an act or omission in accordance with one's moral obligations. Deciding what (if anything) counts as "morally obligatory" is a pri ...
, to include: "
arousal Arousal is the physiological and psychological state of being awoken or of sense organs stimulated to a point of perception. It involves activation of the ascending reticular activating system (ARAS) in the brain, which mediates wakefulness, th ...
, sensory overload, a lack of contextual structure or
predictability Predictability is the degree to which a correct prediction or forecast of a system's state can be made, either qualitatively or quantitatively. Predictability and causality Causal determinism has a strong relationship with predictability. Per ...
, and altered consciousness due to drugs or alcohol", as well as "altered time perspectives... and degree of involvement in group functioning." Zimbardo postulated that these factors lead to "loss of identity or loss of
self-consciousness Self-consciousness is a heightened sense of awareness of oneself. It is not to be confused with consciousness in the sense of qualia. Historically, "self-consciousness" was synonymous with "self-awareness", referring to a state of awareness that ...
", which result in unresponsiveness to external stimuli by the individual and the loss of "cognitive control over motivations and emotions." Consequently, individuals reduce their compliance with good and bad sanctions held by influences outside the group. Zimbardo was consistent with Festinger et al. in his suggestion that loss of individuality leads to a loss of control, causing affected persons to behave intensely and impulsively, having let go of internal restraints. However, he developed this model by specifying the "input variables" (situational factors) that lead to this loss of individuality, as well as the nature of behaviors that result (emotional, impulsive, and regressive). Zimbardo further developed existing deindividuation theory by suggesting these outcome behaviors are "self-reinforcing" and therefore difficult to cease. Moreover, Zimbardo did not restrict his application to group situations; he also applied deindividuation theory to "suicide, murder, and interpersonal hostility."


Contemporary theories

In the late seventies,
Ed Diener Edward Francis Diener (July 25, 1946 – April 27, 2021) was an American psychologist, professor, and author. Diener was a professor of psychology at the University of Utah and the University of Virginia, and Joseph R. Smiley Distinguished Profe ...
began to express dissatisfaction with the current deindividuation hypothesis, which he deemed invalid without specific focus on the psychological processes that yield a deindividuated state. Not only was Zimbardo's model deficient in that respect, but the role of his input variables in causing anti-normative behaviors was not uniform. Consequently, Diener took it upon himself to refine Zimbardo's model by specifying further the internal processes which lead to deindividuation. In 1980, he argued that paying attention to one's personal values through self-awareness increases the ability of that person to self-regulate. In a group context, when attention is distributed outward (in line with this model) away from the self, the individual loses the ability to plan his actions rationally and substitutes planned behaviors with a heightened responsiveness to environmental cues. Thus, according to Diener, the reduction of self-awareness is the "defining feature of deindividuation". Diener proposed that the strict focus on anonymity as the primary factor of deindividuation had created an empirical obstacle, calling for a redirection of empirical research on the topic. While Diener was able to take the focus away from anonymity in the theoretical evolution of deindividuation, he was unable to empirically clarify the function of reduced self-awareness in causing disinhibited behavior. In response to this ambiguity, Prentice-Dunn and Rogers (1982, 1989) extended Diener's model by distinguishing public self-awareness from private self-awareness. Public self-awareness they theorized to be reduced by "accountability cues", such as
diffusion of responsibility Diffusion of responsibility is a sociopsychological phenomenon whereby a person is less likely to take responsibility for action or inaction when other bystanders or witnesses are present. Considered a form of attribution, the individual assume ...
or
anonymity Anonymity describes situations where the acting person's identity is unknown. Some writers have argued that namelessness, though technically correct, does not capture what is more centrally at stake in contexts of anonymity. The important idea he ...
. Such factors, according to these theorists, cause members of a crowd to lose a sense of consequences for their actions; thus, they worry less about being evaluated and do not anticipate punishment. Private self-awareness (where
attention Attention is the behavioral and cognitive process of selectively concentrating on a discrete aspect of information, whether considered subjective or objective, while ignoring other perceivable information. William James (1890) wrote that "Att ...
is shifted away from the self), however, was reduced by "attentional cues", e.g., group cohesiveness and physiological arousal. This reduction leads to "an internal deindividuated state" (comprising decreased private self-awareness and altered thinking as a natural by-product) that causes "decreased self-regulation and attention to internalized standards for appropriate behavior". The "differential self-awareness" theorists suggested both forms of self-awareness could lead to "antinormative and disinhibited behavior" but only the decreased private self-awareness process was in their definition of deindividuation.


SIDE

The most recent model of deindividuation, the social identity model of deindividuation effects (
SIDE Side or Sides may refer to: Geometry * Edge (geometry) of a polygon (two-dimensional shape) * Face (geometry) of a polyhedron (three-dimensional shape) Places * Side (Ainis), a town of Ainis, ancient Thessaly, Greece * Side (Caria), a town of a ...
), was developed by Russell Spears and Martin Lea in 1995. The SIDE model argues that deindividuation manipulations can have the effect of decreasing attention to individual characteristics and interpersonal differences within the group. They outlined their model by explaining that
social identity Identity is the qualities, beliefs, personality traits, appearance, and/or expressions that characterize a person or group.Compare ''Collins Dictionary of Sociology'', quoted in In sociology, emphasis is placed on collective identity, in which ...
performance can fulfill two general functions: # Affirming, conforming, or strengthening individual or group identities. # Persuading audiences into adopting specific behaviors. This model attempts to make sense of a range of deindividuation effects which were derived from situational factors such as group immersion,
anonymity Anonymity describes situations where the acting person's identity is unknown. Some writers have argued that namelessness, though technically correct, does not capture what is more centrally at stake in contexts of anonymity. The important idea he ...
, and reduced identifiability. Therefore, deindividuation is the increased salience of a group identity that can result from the manipulation of such factors. The
SIDE Side or Sides may refer to: Geometry * Edge (geometry) of a polygon (two-dimensional shape) * Face (geometry) of a polyhedron (three-dimensional shape) Places * Side (Ainis), a town of Ainis, ancient Thessaly, Greece * Side (Caria), a town of a ...
model contrasts other deindividuation explanations which involve the reduced impact of the self. Further explanations by Reicher et al. state that deindividuation manipulations affect norm endorsement through not only their impact on self-definition, but also their influence on power relations between group members and their audience.Reicher, S. D. (1987). Crowd behaviour as social action. In J. C. Turner, M. A. Hogg, P. J. Oakes, S. D. Reicher, & M. S. Wetherell (Eds.), Rediscovering the social group: A self-categorization theory (pp. 171–202). Oxford, England: Basil Blackwell Classical and contemporary approaches agree on the main component of deindividuation theory that deindividuation leads to "anti-normative and disinhibited behavior".


Major empirical discoveries


Milgram Milgram is a surname derived from the Yiddish word for pomegranate (מילגרוים, Milgroim) and may refer to: * Arthur Milgram (1912–1961), American mathematician ** R. James Milgram (born 1939), American mathematician, son of Arthur * ...
(1963)

Stanley Milgram's study is a classic study of blind obedience, however, many aspects of this study explicitly illustrate characteristics of situations in which deindividuation is likely to occur. Participants were taken into a room and sat in front of a board of fake controls. They were then told by the experimenter that they were completing a task on learning and that they were to read a list of word pairs to the "learner" and then test the learner on accuracy. The participant then read a word and four possible matches. If the confederate got the match wrong, they were to administer a shock (which was not real, unbeknownst to the participant) from the fake control panel they were sitting in front of. After each wrong answer, the intensity of the shock increased. The participant was instructed by the experimenter to continue to administer the shocks, stating that it was their duty in the
experiment An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried. Experiments provide insight into cause-and-effect by demonstrating what outcome occurs whe ...
. As the voltage increased, the confederate began to complain of pain, yelled out discomfort, and eventually screamed the pain was too much and sometimes they even began to bang on the wall. At the greatest amount of voltage administered, the confederate stopped speaking at all. The results of the study showed that 65 percent of experiment participants administered the experiment's final, and most severe, 450-volt shock. Only 1 participant refused to administer shocks past the 300- volt level. The participants, covered by a veil of anonymity, were able to be more aggressive in this situation than they possibly would have in a normal setting. Additionally, this is a classic example of diffusion of responsibility in that participants looked to an authority figure (the experimenter) instead of being self-aware of the pain they were causing or engaging in self-evaluation which may have caused them to adhere to
societal norms Social norms are shared standards of acceptable behavior by groups. Social norms can both be informal understandings that govern the behavior of members of a society, as well as be codified into rules and laws. Social normative influences or soc ...
.Milgram, S. (1963)
Behavioural study of obedience
Journal of Abnormal & Social Psychology 67, 371-8.


Philip Zimbardo Philip George Zimbardo (; born March 23, 1933) is an American psychologist and a professor emeritus at Stanford University. He became known for his 1971 Stanford prison experiment, which was later severely criticized for both ethical and scient ...
(1969)

This study prompted Zimbardo to write his initial theory and model of deindividuation based on the results of his research. In one study, participants in the experimental condition were made to be anonymous by being issued large coats and hoods which largely concealed their identity. These
New York University New York University (NYU) is a private research university in New York City. Chartered in 1831 by the New York State Legislature, NYU was founded by a group of New Yorkers led by then- Secretary of the Treasury Albert Gallatin. In 1832, th ...
women were dressed up like
Ku Klux Klan The Ku Klux Klan (), commonly shortened to the KKK or the Klan, is an American white supremacist, right-wing terrorist, and hate group whose primary targets are African Americans, Jews, Latinos, Asian Americans, Native Americans, and Cat ...
members in groups of four. In contrast, the participants in the control condition wore normal clothes and name tags. Each participant was brought into a room and given the task of "shocking" a confederate in another room at different levels of severity ranging from mild to dangerous (similar to Stanley Milgram's study in 1963). Zimbardo noted that participants who were in the anonymous condition "shocked" the confederates longer, which would have caused more pain in a real situation, than those in the non-anonymous control group. However, a second study using soldiers was done which showed the exact opposite results. When the soldiers were identifiable, they shocked longer than the unidentifiable soldiers. Zimbardo proposed that as a result of anonymity, the soldiers may have felt isolated from their fellow soldiers. These studies motivated Zimbardo to examine this deindividuation and
aggression Aggression is overt or covert, often harmful, social interaction with the intention of inflicting damage or other harm upon another individual; although it can be channeled into creative and practical outlets for some. It may occur either reacti ...
in a prison setting, which is discussed in the next study listed.Zimbardo, P. G. (1969). The human choice: Individuation, reason, and order vs. deindividuation, impulse, and chaos. *In W. J. Arnold & D. Levine (Eds.), Nebraska Symposium on Motivation(pp. 237-307). lincoln: university of nebraska press.


Philip Zimbardo Philip George Zimbardo (; born March 23, 1933) is an American psychologist and a professor emeritus at Stanford University. He became known for his 1971 Stanford prison experiment, which was later severely criticized for both ethical and scient ...
(1971)

Now a more widely recognized study since the publication of his book, ''The Lucifer Effect'', the
Stanford Prison Experiment The Stanford prison experiment (SPE) was a psychological experiment conducted in the summer of 1971. It was a two-week simulation of a prison environment that examined the effects of situational variables on participants' reactions and beh ...
is infamous for its blatant display of
aggression Aggression is overt or covert, often harmful, social interaction with the intention of inflicting damage or other harm upon another individual; although it can be channeled into creative and practical outlets for some. It may occur either reacti ...
in deindividuated situations. Zimbardo created a mock prison environment in the basement of
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is conside ...
’s psychology building in which he randomly assigned 24 men to undertake the role of either guard or prisoner. These men were specifically chosen because they had no abnormal personality traits (e.g.,
narcissistic Narcissism is a self-centered personality style characterized as having an excessive interest in one's physical appearance or image and an excessive preoccupation with one's own needs, often at the expense of others. Narcissism exists on a co ...
,
authoritarian Authoritarianism is a political system characterized by the rejection of political plurality, the use of strong central power to preserve the political ''status quo'', and reductions in the rule of law, separation of powers, and democratic vot ...
, antisocial). The experiment, originally planned to span over two weeks, ended after only six days because of the sadistic treatment of the prisoners by the guards. Zimbardo attributed this behavior to deindividuation due to immersion within the group and creation of a strong group dynamic. Several elements added to the deindividuation of both guards and prisoners. Prisoners were made to dress alike, wearing stocking caps and hospital dressing gowns, and also were identified only by a number assigned to them rather than by their name. Guards were also given uniforms and reflective glasses which hid their faces. The dress of guards and prisoners led to a type of
anonymity Anonymity describes situations where the acting person's identity is unknown. Some writers have argued that namelessness, though technically correct, does not capture what is more centrally at stake in contexts of anonymity. The important idea he ...
on both sides because the individual identifying characteristics of the men were taken out of the equation. Additionally, the guards had the added element of
diffusion of responsibility Diffusion of responsibility is a sociopsychological phenomenon whereby a person is less likely to take responsibility for action or inaction when other bystanders or witnesses are present. Considered a form of attribution, the individual assume ...
which gave them the opportunity to remove personal responsibility and place it on a higher power. Several guards commented that they all believed that someone else would have stopped them if they were truly crossing the line, so they continued with their behavior. Zimbardo's prison study would not have been stopped if one of Zimbardo's graduate students, Christina Maslach, had not confronted him.


Diener, Fraser, Beaman, and Kelem (1976)

In this classic study, Diener et al. had a woman place a bowl of candy in her living room for trick-or-treaters. An observer was placed out of sight from the children in order to record the behaviors of the trick-or-treaters. In one condition, the woman asked the children identification questions such as where they lived, who their parents were, what their name was, etc. In the other condition, children were completely
anonymous Anonymous may refer to: * Anonymity, the state of an individual's identity, or personally identifiable information, being publicly unknown ** Anonymous work, a work of art or literature that has an unnamed or unknown creator or author * Anony ...
. The observer also recorded whether children came individually or in a group. In each condition, the woman invited the children in, claimed she had something in the kitchen she had to tend to so she had to leave the room, and then instructed each child to take only one piece of candy. The anonymous group condition far outnumbered the other conditions in terms of how many times they took more than one piece of candy. In 60% of cases, the anonymous group of children took more than one piece, sometimes even the entire bowl of candy. The anonymous individual and the identified group condition tied for second, taking more than one piece of candy 20% of the time. The condition which broke the rule the fewest times was the identified individual condition, which took more than one piece of candy only in 10% of cases.


Nadler, A., Goldberg, M., Jaffe, Y. (1982)

This study by Nadler, Goldberg, and Jaffe measured the effects that deindividuating conditions (
anonymity Anonymity describes situations where the acting person's identity is unknown. Some writers have argued that namelessness, though technically correct, does not capture what is more centrally at stake in contexts of anonymity. The important idea he ...
vs. identifiable) had on two subject conditions (self-differentiated vs. undifferentiated individuals). The self-differentiated individual is said to have definite boundaries between inner characteristics identified as self and the social environment. In the undifferentiated individual, such a distinction is less marked. Subjects who were preselected as being self-differentiated or undifferentiated were observed under conditions of high or low anonymity. Each subject was exposed to transgressions and donations made by confederates, and then their own transgressive and
prosocial Prosocial behavior, or intent to benefit others, is a social behavior that "benefit other people or society as a whole", "such as helping, sharing, donating, co-operating, and volunteering". Obeying the rules and conforming to socially accepted beh ...
actions were measured. Also, measures of verbal
aggression Aggression is overt or covert, often harmful, social interaction with the intention of inflicting damage or other harm upon another individual; although it can be channeled into creative and practical outlets for some. It may occur either reacti ...
directed toward the experimenter and measures of internal state of deindividuation were taken. Major findings of the study: * Within the undifferentiated groups, a greater frequency of subsequent subject transgressive behavior occurred in the anonymity more than in the identifiability conditions. * Undifferentiated individuals are affected by deindividuating circumstances and they tend to transgress more after observing the model in the experiment. * In terms of verbal
aggression Aggression is overt or covert, often harmful, social interaction with the intention of inflicting damage or other harm upon another individual; although it can be channeled into creative and practical outlets for some. It may occur either reacti ...
, self-differentiated individuals' level of verbal aggression was equal under anonymity and identifiability conditions. However, undifferentiated individuals tended to model the confederates' aggression and were more verbally aggressive when anonymous than when identifiable. * The study found that undifferentiated individuals were less self-conscious and less inhibited in the anonymity condition. Overall, the study supports the hypothesis that deindividuating conditions cause behavioral changes in undifferentiated individuals but have relatively little effect on the behavior of self-differentiated individuals.


Dodd, D. (1985)

Dodd's experiment evaluates the association between deindividuation and anonymity. Dodd measured his subjects by asking them what they would do (within the realm of reality) if their identity were kept anonymous and they would receive no repercussions. The responses were grouped into four categories:
prosocial Prosocial behavior, or intent to benefit others, is a social behavior that "benefit other people or society as a whole", "such as helping, sharing, donating, co-operating, and volunteering". Obeying the rules and conforming to socially accepted beh ...
, antisocial, nonnormative, and neutral. Results of his study yielded that 36% of the responses were antisocial, 19% nonnormative, 36% neutral and only 9% prosocial. The most frequent responses recorded were
criminal acts In ordinary language, a crime is an unlawful act punishable by a state or other authority. The term ''crime'' does not, in modern criminal law, have any simple and universally accepted definition,Farmer, Lindsay: "Crime, definitions of", in Can ...
. This study on deindividuation exhibits the importance of situational factors, in this case anonymity, when reporting antisocial behavior. Furthermore, this study demonstrates that personal traits and characteristics are not much of predictor when predicting the behavior. Overall, this study is supportive of the concept of deindividuation as Dodd found that behavior changes from what would be normal of a certain individual, to a behavior that is not representative of normal behavioral decisions.


Reicher, S., Levine, R. M., Gordijn, E. (1998)

Following the social models of identity proposed by deindividuation, the study conducted by Reicher, Levine and Gordijn expresses the strategic effects of visibility on the in-group. The experimenters suggest that increasing visibility amongst the in-group members subsequently increases their ability to support each other against the outgroup—this also leads to an increase in the traits of the in-group that would normally be sanctioned by the out-group. The study was based on the debate over whether fox hunting should or should not be banned. The experimenters were mainly concerned with the participants that defined themselves as 'anti-hunting'. The participants involved thirty male and female students of the mean age of 17 years in the first year of their A-level psychology course located in a rural town in South West England. The study involved two separate sessions where the participants completed a pre-test and were assigned to the pro- or anti- hunting groups. A spokesperson representing each view was brought in to discuss their opinions individually with each participant. The pro-hunting group was taken to another room and did not take further part in the study. For the in-group low-visibility condition, part of the anti-hunting participants were taken to individual booths where they were not visible to others in the experiment. The remaining anti-hunting participants who were categorized under the in-group high visibility condition, were seated in a circle where each was visible to all throughout the experiment. At this point both groups were shown a video. After watching the video the participants were handed a questionnaire. They were asked to write their names on the front so that the out-group spokesperson would be able to identify the authors of the questionnaire before discussing the comments individually. To the experimenters’ surprise the experiment demonstrated the inverse of their hypothesis. The study showed that more participants were more likely to express normative behaviors that are punishable by powerful out-group when they are visible to fellow members of the same in-group. Experimenters also found that in-group participants actually expressed opposition to the roles imposed by the experimenters themselves. Instead of just uniting against hunt, some of the in-group participants resented being told that their group supported certain views—some regarded themselves as moderate pro- or anti- hunters instead. In this case, the experimenters themselves triggered a response from the in-group, which was later analyzed through follow up experiments.Reicher, S., Levine, R. M., Gordijn, E. (1998)
More on deindividuation, power relations between groups and the expression of social identity: Three studies on the effects of visibility to the in-group
British Journal of Social Psychology, 37, 15-40.


Lee, E.J. (2007)

This study conducted by Lee investigates the effects of deindividuation on
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 polarization refers to the finding that following group discussion, individuals tend to endorse a more extreme position in the direction already favored by the group. In Lee's study subjects were either assigned to a deindividuation or individuation condition. Next, each subject answered questions and provided an argument about a given dilemma. They were then shown their partners’ decisions and the subjects were asked to indicate how convincing and valid the overall arguments were. In analyzing her results, Lee came to several conclusions: * Group identification was positively correlated with
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 ...
. * Lee confirmed her
hypothesis A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous obse ...
that the subjects would show stronger group identification and greater opinion polarization when deindividuated than when individuated. * Lee found that the more the participants identified with their partners, the more positive their evaluations of the partners’ arguments were, manifesting in-group favoritism. * Lee's findings suggest that both higher group identification and deindividuated subjects reported a significantly higher level of public-self-awareness. Overall, this study provides solid research for which the previous findings regarding deindividuation can be solidified. The finding that deindividuation was associated with stronger group polarization and identification corresponds with the basis of deindividuation: individuals that are more polarized and identified with a group will be more apt to act out of character and display anti-normative behavior.Lee, E. (2007). Deindividuation effects on group polarization in computer-mediated communication: the role of group identification, public-self-awareness, and perceived argument quality. Journal of Communication, 57(2), 385-403.


Applications

Deindividuation is the perceived loss of individuality and personal responsibility that can occur when someone participates as part of a group. It can cause a person to be more likely to donate a large amount of money to charity, but also cause them to be more likely to engage in mob violence.Morris, M. (1996). By Force of Arms: Rape, War, and Military Culture . Duke Law Journal,45(4), 651-781. There are many real-world instances in which the effects of deindividuation can be seen. Deindividuation can occur in as varied instances as in the police force, the military, the internet, sports teams,
gang A gang is a group or society of associates, friends or members of a family with a defined leadership and internal organization that identifies with or claims control over territory in a community and engages, either individually or collective ...
s,
cult In modern English, ''cult'' is usually a pejorative term for a social group that is defined by its unusual religious, spiritual, or philosophical beliefs and rituals, or its common interest in a particular personality, object, or goal. Thi ...
s, and social organizations. Although they may seem very different on the surface, these groups share many traits that make them conducive to, and even contingent on, deindividuation. All of the examples share the strong drive towards
group cohesiveness Group cohesiveness (also called group cohesion and social cohesion) arises when bonds link members of a social group to one another and to the group as a whole. Although cohesion is a multi-faceted process, it can be broken down into four main co ...
.Abrams, D. (1989). Self-Consciousness and Social Identity: Self-Regulation as a Group Member. Social Psychology Quarterly, 52(4), 311-318. Police officers, soldiers, and sports teams all wear uniforms that create a distinct in-group while eliminating the individual differences of personal style. Men in the military are even required to shave their heads in order to better unify their appearance. Although gangs, cults, and fraternities and sororities do not require the same degree of physical uniformity, they also display this tendency towards unifying the exterior in order to unify their group. For example, gangs may have a symbol that they tattoo on their bodies in order to identify themselves as part of the in-group of their gang. Members of
fraternities and sororities Fraternities and sororities are social organizations at colleges and universities in North America. Generally, membership in a fraternity or sorority is obtained as an undergraduate student, but continues thereafter for life. Some accept grad ...
often wear clothing marked with their "letters" so that they can quickly be identified as part of their specific group. By reducing individual differences, these various groups become more cohesive. The cohesiveness of a group can make its members lose their sense of self in the overwhelming identity of the group. For example, a young man in the military might identify himself through a variety of individual constructs, however while in uniform with a shaved head and dog tags around his neck, he might suddenly only identify himself as a soldier. Likewise, a girl wearing the letters of her sorority on her shirt, and standing in a crowd of her sorority sisters, may feel less like herself, and more like a "Chi-Oh" or "Tridelt". Physically normalized to the standards of their respective groups, these various group members are all at risk to feel deindividuized. They may begin to think of themselves as a mere part of the group, and lose the awareness that they are an individual with the capacity to think and act completely separately from their group.Hazelwood, L. (1998). The Effects of Juror Anonymity on Jury Verdicts. Law and Human Behavior, 22(6), 695-713. They could do things they might not usually do out of shyness, individual morality, self-consciousness, or other factors. Due to reduced feelings of accountability, and increased feelings of
group cohesion Group cohesiveness (also called group cohesion and social cohesion) arises when bonds link members of a social group to one another and to the group as a whole. Although cohesion is a multi-faceted process, it can be broken down into four main co ...
and
conformity Conformity is the act of matching attitudes, beliefs, and behaviors to group norms, politics or being like-minded. Norms are implicit, specific rules, shared by a group of individuals, that guide their interactions with others. People often cho ...
, these group members could act in a manner of non-normative ways. Deindividuation often occurs without face-to-face interaction and is a prevalent feature of the internet. The loosening of normal constraints on behavior caused by deindividuation thrives within online environments and contributes to cyberbullying behavior.Aronson, E., Wilson, T., Akert, R., & Sommers, S. (2016). Social Psychology. Boston, USA. Pearson. 281-282. 9th ed. Furthermore, deindividuation which occurs online has been thought to be responsible for a widespread willingness to illegally download software. One researcher tested the hypothesis that "persons who prefer the anonymity and pseudonymity associated with interaction on the Internet are more likely to pirate software", but found that neither anonymity nor pseudonymity predicted self-reported software piracy.Hinduja, S. (2008)
Deindividuation and Internet Software Piracy
Cyberpsychology & Behavior, 11(4), 391-398. doi:10.1089/cpb.2007.0048
From buying drinks for an entire bar of strangers to committing violence as dire as murder or rape, deindividuation can lead a variety of people to act in ways they may have thought impossible.


Controversies

Questions have been raised about the
external validity External validity is the validity of applying the conclusions of a scientific study outside the context of that study. In other words, it is the extent to which the results of a study can be generalized to and across other situations, people, stim ...
of deindividuation research. As deindividuation has evolved as a theory, some researchers feel that the theory has lost sight of the dynamic group intergroup context of
collective behavior The expression collective behavior was first used by Franklin Henry Giddings and employed later by Robert Park and Ernest Burgess, Herbert Blumer, Ralph H. Turner and Lewis Killian, and Neil Smelser to refer to social processes and events ...
that it attempts to model. Some propose that deindividuation effects may actually be a product of group norms; crowd behavior is guided by norms that emerge in a specific context. More generally, it seems odd that while deindividuation theory argues that group immersion causes antinormative behavior, research in
social psychology Social psychology is the scientific study of how thoughts, feelings, and behaviors are influenced by the real or imagined presence of other people or by social norms. Social psychologists typically explain human behavior as a result of the ...
has also shown that the presence of a group produces
conformity Conformity is the act of matching attitudes, beliefs, and behaviors to group norms, politics or being like-minded. Norms are implicit, specific rules, shared by a group of individuals, that guide their interactions with others. People often cho ...
to group norms and standards.Deutsch, M., & Gerard, H. B. (1955)
A study of normative and informational social influences upon individual judgment
Journal of Personality & Social Psychology, 51, 629-636.1987-00135 -00110.1037//0022 -3514.51.3.629
Certain experiments, such as Milgram's obedience studies (1974), demonstrate conformity to the experimenter's demands; however the research paradigm in this experiment is very similar to some employed in deindividuation studies, except the role of the experimenter is usually not taken into account in such instances.Milgram, S. (1974). Obedience to authority. New York: Harper & Row. A larger criticism is that our conception of the antinormative behaviors which deindividuation causes is based on social norms, which is problematic because norms by nature are variable and situation specific. For instance, Johnson and Downing (1979) demonstrated that group behaviors vary greatly depending on the situation. Participants who dressed in
Ku Klux Klan The Ku Klux Klan (), commonly shortened to the KKK or the Klan, is an American white supremacist, right-wing terrorist, and hate group whose primary targets are African Americans, Jews, Latinos, Asian Americans, Native Americans, and Cat ...
robes shocked a research confederate more, but participants dressed as nurses actually shocked less regardless of whether they were identifiable or anonymous. They explained these results as a product of contextual cues, namely the costumes. This explanation runs counter to Zimbardo's initial theory of deindividuation which states that deindividuation increases antinormative behavior regardless of external cues. Researchers who examine deindividuation effects within the context of situational norms support a social identity model of deindividuation effects.


See also

*
Dissociative Identity Disorder Dissociative identity disorder (DID), better known as multiple personality disorder or multiple personality syndrome, is a mental disorder characterized by the presence of at least two distinct and relatively enduring personality states. The di ...
* Groupshift *
Groupthink Groupthink is a psychological phenomenon that occurs within a group of people in which the desire for harmony or conformity in the group results in an irrational or dysfunctional decision-making outcome. Cohesiveness, or the desire for cohesiveness ...
*
Social facilitation Social facilitation is a social phenomenon in which being in the presence of others improves individual task performance. That is, people do better on tasks when they are with other people rather than when they are doing the task alone. Situation ...
*
Social loafing In social psychology, social loafing is the phenomenon of a person exerting less effort to achieve a goal when they work in a group than when working alone. It is seen as one of the main reasons groups are sometimes less productive than the combi ...


References


External links

* {{Authority control Conformity Social psychology concepts Crowds