The Effects of Group Size on Cognitive Effort and Evaluation

Richard E. Petty · Stephen G. Harkins · Kipling D. Williams · Bibb Latané

171 citations0/0 files storedPersonality and Social Psychology Bulletin

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Social and Intergroup Psychology Psychology of Social Influence Social Power and Status Dynamics

Abstract

Students rated a poem and an editorial believing that they alone were responsible, that they were one of four persons responsible, or that they were one of sixteen persons responsible for evaluating the communications. As predicted, group mem bers reported putting less effort into the assessment than indi viduals, and this diffusion of effort followed an inverse power function. In addition, individuals evaluated the communications more favorably than persons who thought they shared the evalu ation responsibility.

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1968Implications of Commodity Theory for Value Change 1974The Ringelmann effect: Studies of group size and group performance 1969Size of church membership and members' support of church behavior settings.

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