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Knowing Me, Knowing You: Anonymity Effects on Social Identity Processes within Groups

University of Manchester, martin.lea{at}man.ac.uk

Russell Spears

University of Amsterdam

Daphne de Groot

University of Amsterdam

The Social Identity Model of Deindividuation Effects (SIDE) proposes that depersonalization of self and others is responsible for the effects of visual anonymity on group behavior. The authors investigated these mediating processes by assessing the effects of group-based self-categorization and stereotyping of others on group attraction within visually anonymous or video-identifiable groups communicating via computer. Structural equation modeling showed that visual anonymity increased group-based self-categorization, which directly increased attraction to the group and indirectly increased group attraction by enhancing group-based stereotyping of others. Visual anonymity had no effect on self-categorization in terms of a wider social category (nationality). Predictions derived from alternative perspectives that visual anonymity decreases group attraction by increasing impersonal task focus or by attenuating evaluation concerns were not supported.

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