T. Postmes

Publications288
h-index66
Citations20,112
Highly Influential Citations1,057
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Toward an integrative social identity model of collective action: a quantitative research synthesis of three socio-psychological perspectives.
TLDR
Results showed the importance of social identity in predicting collective action by supporting SIMCA's key predictions that affective injustice and politicized identity produced stronger effects than those of non-affective injustice and non-politicized identity.
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A Social Identity Model of Deindividuation Phenomena
This chapter challenges traditional models of deindividuation. These are based on the assumption that such factors as immersion in a group and anonymity lead to a loss of selfhood and hence of…
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The consequences of perceived discrimination for psychological well-being: a meta-analytic review.
TLDR
Results support the idea that the pervasiveness of perceived discrimination is fundamental to its harmful effects on psychological well-being.
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Deindividuation and antinormative behavior: A meta-analysis.
A meta-analytic integration reviews evidence for deindividuation theory as an explanation of collective and antinormative behavior. Deindividuation theories propose a subjective deindividuated state…
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Social Identity, Health and Well-Being: An Emerging Agenda for Applied Psychology
The social environment comprising communities, families, neighbourhoods, work teams, and various other forms of social group is not simply an external feature of the world that provides a context for…
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Breaching or Building Social Boundaries?
Computer-mediated communication (CMC) is sometimes heralded for its power to break down social boundaries and to liberate individuals from social influence, group pressure, and status and power…
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A single-item measure of social identification: reliability, validity, and utility.
This paper introduces a single-item social identification measure (SISI) that involves rating one's agreement with the statement 'I identify with my group (or category)' followed by a 7-point scale.…
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Social Influence in Computer-Mediated Communication: The Effects of Anonymity on Group Behavior
Two studies examined hypotheses derived from a Social Identity model of Deindividuation Effects (SIDE) as applied to social influence in computer-mediated communication (CMC) in groups. This model…
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The Formation of Group Norms in Computer-Mediated Communication
The formation of group norms in computer-mediated communication (CMC) was examined among students who used e-mail as part of a course. A network analysis of group structures revealed that (a) content…
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The more (and the more compatible) the merrier: multiple group memberships and identity compatibility as predictors of adjustment after life transitions.
TLDR
The results suggest that life transitions are difficult partly because they entail changes in group membership, and demonstrate that identification with a new group can help buffer individuals from the negative well-being consequences of change.
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