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Ingroup Cooperation and Trust: Two Models

Ingroup Cooperation and Trust: Two Models. Marilynn B. Brewer Ohio State University Sapporo, Japan September, 2003. Brewer & Kramer (1986). Effects of collective identity salience on cooperation in a resource dilemma: An anomaly. Resource Dilemma (Brewer & Kramer, 1986). S1. S5. S2.

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Ingroup Cooperation and Trust: Two Models

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  1. Ingroup Cooperation and Trust: Two Models Marilynn B. Brewer Ohio State University Sapporo, Japan September, 2003

  2. Brewer & Kramer (1986) Effects of collective identity salience on cooperation in a resource dilemma: An anomaly

  3. Resource Dilemma(Brewer & Kramer, 1986) S1 S5 S2 S6 Resource Pool S7 S3 S4 S8 “Replenishment” rate = 0.9 – 1.1

  4. Resource Dilemma(Brewer & Kramer, 1986) S19 S10 S9 S1 S5 S14 S16 S2 S6 Resource Pool S20 S7 S3 S17 S15 S4 S8 S13 S11 S12

  5. Experimental Design • Group Size: 8 vs 32 • Framing: Conservation dilemma vs Contribution dilemma (public goods) • Identity salience: individual vs collective • Time (feedback) Phase 1: gradual depletion (14 trials) Phase 2: depletion crisis (6 trials)

  6. Results: Phase 1 First trial: Main effect of group size (Msmall= 13.15 vs Mlarge = 14.42) Main effect of framing(Mcons = 12.13 vs Mcont = 15.45) Across trial blocks: Slight decline in take, especially in public goods (contribution) condition

  7. Results: Phase 2 Contribution Frame Conservation Frame

  8. Some More Recent Theorizing

  9. Core Configurations (Caporael, 1997)

  10. Levels of Self-Representation(Brewer & Gardner, 1996)

  11. Two Models of Social Control • Reciprocal exchange relationships interpersonal trust; internal differentiation • Group-based collectivismdepersonalized loyalty to group as a whole; entification and boundedness

  12. A Nonintuitive Implication Individualism  Collectivism

  13. Some Evidence… • Americans score high on individualism but also on ingroup identification, value of belonging to groups (Oyserman et al., 2002; Yuki, 2003) • Gender differences in relational versus collective interdependence (Kashima et al., 1995; Gabriel & Gardner, 1999)

  14. Gender and Depersonalized Trust

  15. More Direct Evidence(Buchan, Croson, & Dawes, 2002)

  16. Social Value Orientation and the Ingroup Effect in Social Dilemmas(DeCremer & vanVugt, 1999) Ingroup Salience

  17. Brewer & Kramer Revisited…

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