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The social identity model of deindividuation effects (or SIDE model) is a theory developed in Deindividuation theory was developed to explain the phenomenon that in crowds, people become capable of acts that rational individuals would not. This chapter challenges traditional models of deindividuation. These are based on the assumption that such factors as immersion in a group and anonymity lead . Reicher, S.D., Spears, R. and Postmes, T. () A Social Identity Model of Deindividuation Phenomena. European Review of Social Psychology, 6,

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In the individuation condition, the room was brightly lit and the participants wore tags with their names. This chapter challenges traditional deindivduation of deindividuation. Evaluation of a system to develop team players and improve productivity in internet collaborative learn- [4] McPhail, C. The present article analyzes the construct deindividuation theory from its conceptualization by Le Bon to the most recent theoretical model, the Social Identity Model of Deindividuation Effects.

Journal of Personality and Social Psychology3424— Another recent study on deindividuation was conducted by Guegan et al.


The subjects who had been assigned to the deindividuation condition wore large hoods, were never called by their names, were in a dimly lit room, and could see the other members of their group using the same clothes and under the same conditions through a closed-circuit TV inside the cabin.

The first manipulated variables were the attentional cues. Journal of Personality and Social Psychology43— The difference in shock duration between the deindividuated and the identifiable groups was statistically significant. Prentice-Dunn and Rogers were able to demonstrate statistically the theory that Zimbardo had proposed: Retrieved from ” https: This process assumes or SIDE model is a theory developed in social psychol- that individuals have a unitary self-concept that they can ogy and communication studies.


Attitudinal and behavioural effects of de-individuation in conditions of high and low group salience. Deindividuation and valence of cues: It corresponds to studies by Prentice-Dunn and Rogersthat propose reduced private self-awareness as the main inducing variable of deindividuation.

First formal Deindividuation proposition.

Social Identity Model of Deindividuation Effects

If the first stranger had been randomly assigned and instructed to behave in a pleasant way, the second target was the stranger who would behave in an unpleasant deindividuxtion and vice versa.

To test his theory, Zimbardo conducted two experiments.

Recent scientific techniques, such as neuroimaging and predictive mathematical models, may improve comprehension of the construct in terms of its definition and prospective effects. If individuals interact anonymously in the ab- in the face of a powerful and unsympathetic outgroup. For the first experiment, they had to solve anagrams that formed popular band names, whereas for the second experiment, they had to apply fake shocks to a subject who was participating in an experiment about stressful distractions in memory.

It focuses on populations in vulnerable contexts such as with intrafamilial violence, violence against children and adolescents, considering various markers such as gender identity, sexual orientation, social class, among others. However, when there are other customers present, the attention of the salespeople is not concentrated on one person, increasing anonymity and reducing the public self-awareness of the individual who was alone.

Throughout deineividuation review, some ontological problems were identified. The cognitive mediation of the behavior is undermined and antinormative behavior may be elicited. Communication Research, 21, — Therefore, if a transgressive behavior occurs because of something other than the reduction of its cognitive mediation such as the absence of responsibility for an actionit is not the deindividuation process that is involved. The aim of this study is to compare theories about deindividuation and to highlight its advances, identify theoretical questions that remain and suggest future directions for the study of this issue.


The proposition of the deindividuation state by Zimbardo may have promoted investigations of the intrapsychic aspects of deindividuation. This reduction of inner restraints facilitates the elicitation of suppressed behaviors, which may transgress social norms.

SAGE Reference – Social Identity Model of Deindividuation Effects

They demonstrated that this internal state is composed of altered experience and self-awareness. Analyzing various groups and seeking to identify their norms are through surveys with members, for example may be useful in preventing events that may cause social disturbance. Francielle Machado Beria fran.

The net result is that people will tend to perceive self and others in terms of stereotypic group features, and are influenced accordingly. They were also told that the level of shock applied was not of primary interest to the researchers and thus would not be recorded.

You modeo free to: Consequently, the influence of the norms of the group in which the subject is included at the time increases, producing the behavioral normativity proposed by self-categorization theory.

In general, the results of the meta-analysis indicated that the SIDE is the model that best explains the results of studies on deindividuation and is the most promising for the analysis deinividuation group and crowd behavior.

The current state of deindividuation Since the publication of the meta-analysis by Postmes and SpearsSIDE has been widely used to explain the results of deindividuation research.