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Minimal group paradigm

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Title: Minimal group paradigm  
Author: World Heritage Encyclopedia
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Subject: Henri Tajfel, Michael Billig, Out-group homogeneity, Granfalloon, Social identity approach
Collection: Group Processes
Publisher: World Heritage Encyclopedia

Minimal group paradigm

The minimal group paradigm is a methodology employed in social psychology.[1] Although it may be used for a variety of purposes, it is most well known as a method for investigating the minimal conditions required for discrimination to occur between groups. Experiments using this approach have revealed that even arbitrary and virtually meaningless distinctions between groups, such as preferences for certain paintings[2] or the color of their shirts,[3] can trigger a tendency to favor one's own group at the expense of others.[4][5][6][7]


  • Methodology 1
  • Development 2
  • Further uses 3
  • References 4


Although there are some variations, the traditional minimal group study consists of two phases. In the first phase, participants are randomly and anonymously divided into two groups (e.g., "Group A" and "Group B"), ostensibly on the basis of trivial criteria (e.g., preference for paintings or the toss of a coin). Sometimes, these participants are strangers to one another. In the second phase, participants take part in an ostensibly unrelated resource distribution task. During this task, participants distribute a valuable resource (e.g., money or points) between other participants who are only identified by code number and group membership (e.g., "participant number 34 of Group A"). Participants are told that, after the task is finished, they will receive the total amount of the resource that has been allocated to them by the other participants.

The main purpose of the procedures in the minimal group paradigm is to exclude "objective" influences from the situation. In the context of ingroup favoritism, the anonymity of participants' personal identities excludes the influence of interpersonal favoritism. The omission of the self as a recipient in the resource distribution task excludes the influence of direct personal self-interest. The absence of any link between total in-group gain and individual gain excludes the influence of realistic competition.[8] Finally, the absence of intergroup status hierarchies, together with the triviality and minimal social content of the groups, excludes the influence of normative or consensual discrimination.[9]

Minimal group experiments tend to find that, although participants show a significant degree of fairness in their allocations,[10] they also show a significant tendency to allocate more money or points to in-group members than to out-group members.[11][12]


Henri Tajfel and colleagues originally developed the minimal group paradigm in the early 1970s as part of their attempt to understand the psychological basis of intergroup discrimination.[13] Tajfel's intention was to create groups with as little meaning as possible and then add meaning to discover at what point discrimination would occur.[14] The surprising finding was that, even in the most minimal group conditions, responses favoring the in-group occurred.[4] Although Tajfel and colleagues originally explained minimal group discrimination in terms of a generic norm for social competition that exists across societies,[4] this explanation was later thought to be “uninteresting” and not offering any real explanatory or predictive power.[7][15] Tajfel instead developed social identity theory’s motivational explanation. In social identity theory, people are thought to award more points to their own group than to the out-group in the minimal group paradigm because, in those circumstances, in-group favoritism is the only way in which to achieve positive distinctiveness.

Further uses

Researchers have recently applied minimal group methodology to investigate prejudice against migrants.[16] The researchers created two hypothetical groups, 'Group A' and 'Group B'. Group assignment was random. The members of the groups were all hypothetical people, and therefore, they had no distinguishable differences. The researchers then chose some members of each group at random to leave their original group and join the opposite group; these members were referred to as migrants. Participants then rated each group member on a seven point Likert scale for favorability. Migrants were rated as significantly less favorable than non-migrants. This is thought to be in part due to the migrants exclusion from their original group. Another contributing factor was processing fluency in that migrants were prejudiced against due to the increased cognitive load in categorizing them.[17]

In addition, the minimal group paradigm has been used to investigate the out-group homogeneity effect.[18] In one study, participants were divided into two minimal groups. Each group was given two positive traits and two negative traits. Participants rated their own group as well as estimating ratings for the other group. They also estimated the minimum and maximum ratings for the traits in each group. Participants rated their own group higher on the positive traits and lower on the negative traits. The findings also showed that raters perceived higher variability among their own group's negative traits as well as the out-group's positive traits. The ratings showed that participants viewed their own group more positively as well as more diverse than the out-group.


  1. ^ , 96-102Scientific American, 223Tajfel, H. (1970). Experiments in intergroup discrimination. (abstract).
  2. ^ See "Kandinsky versus Klee experiment", Tajfel et al. (1971).
  3. ^ Frank, M. G. & Gilovich, T. (1988). The dark side of self and social perception: Black uniforms and aggression in professional sports. Journal of Personality and Social Psychology, 54, 74-83
  4. ^ a b c Tajfel, H.; Billig, M. G.; Bundy, R. P. & Flament, C. (April–June 1971). "Social categorization and intergroup behaviour" (PDF). European Journal of Social Psychology 1 (2): 149–178.  
  5. ^ Tajfel, H. (1970). Experiments in Intergroup Discrimination.
  6. ^ Tajfel, H. (1970). Experiments in Intergroup Discrimination.
  7. ^ a b Tajfel, H. (1974). Social Identity and Intergroup Behavior.
  8. ^ Sherif, M. (1967) Group conflict and co-operation. London: Routledge.
  9. ^ Rubin, M., & Hewstone, M. (2004). Social identity, system justification, and social dominance: Commentary on Reicher, Jost et al., and Sidanius et al. Political Psychology, 25, 823-844. [View}
  10. ^ Rubin, M., Badea, C., & Jetten, J. (2014). Low status groups show in-group favoritism to compensate for their low status and to compete for higher status. Group Processes and Intergroup Relations, 17, 563-576. doi: 10.1177/1368430213514122
  11. ^ Brewer, M. B. (1979). Ingroup bias in the minimal intergroup situation: A cognitive motivational analysis. --~~~~Psychological Bulletin, 86, 307 324.
  12. ^ Mullen, B., Brown, R., & Smith, C. (1992). Ingroup bias as a function of salience, relevance, and status: An integration. European Journal of Social Psychology, 22, 103-122.
  13. ^ Haslam, A. S. (2001). Psychology in Organizations. London, SAGE Publications.
  14. ^ Tajfel, H. (1978). Tajfel, Henri, ed. "Interindividual behaviour and intergroup behaviour". Differentiation between social groups: Studies in the social psychology of intergroup relations (London: Academic Press): 27–60. 
  15. ^ Wetherell, M. (1982). Tajfel, H., ed. "Cross-cultural studies of minimal groups: Implications for the social identity theory of intergroup relations". Social identity and intergroup relations (Cambridge, UK: Cambridge University Press): 207–240. 
  16. ^ Rubin, M., Paolini, S., & Crisp, R. J. (2010). A processing fluency explanation of bias against migrants. Journal of Experimental Social Psychology, 46, 21-28.[View]
  17. ^ Rubin, M., Paolini, S., & Crisp, R. J. (2010). A processing fluency explanation of bias against migrants. Journal of Experimental Social Psychology, 46, 21-28.[View]
  18. ^ Rubin, M., Hewstone, M., & Voci, A. (2001). Stretching the boundaries: Strategic perceptions of intragroup variability. European Journal of Social Psychology, 31, 413-429.[View]
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