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Toward an integrative social identity model of collective action: A quantitative research synthesis of three socio-psychological perspectives.

2008; American Psychological Association; Volume: 134; Issue: 4 Linguagem: Inglês

10.1037/0033-2909.134.4.504

1939-1455

Martijn van Zomeren, Tom Postmes, Russell Spears,

Social Power and Status Dynamics

An integrative social identity model of collective action (SIMCA) is developed that incorporates 3 socio-psychological perspectives on collective action.Three meta-analyses synthesized a total of 182 effects of perceived injustice, efficacy, and identity on collective action (corresponding to these sociopsychological perspectives).Results showed that, in isolation, all 3 predictors had medium-sized (and causal) effects.Moreover, results showed the importance of social identity in predicting collective action by supporting SIMCA's key predictions that (a) affective injustice and politicized identity produced stronger effects than those of non-affective injustice and non-politicized identity; (b) identity predicted collective action against both incidental and structural disadvantages, whereas injustice and efficacy predicted collective action against incidental disadvantages better than against structural disadvantages; (c) all 3 predictors had unique medium-sized effects on collective action when controlling for betweenpredictor covariance; and (d) identity bridged the injustice and efficacy explanations of collective action.Results also showed more support for SIMCA than for alternative models reflecting previous attempts at theoretical integration.The authors discuss key implications for theory, practice, future research, and further integration of social and psychological perspectives on collective action.