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Effects of group size, problem difficulty, and sex on group performance and member reactions.

Bray, Robert M., Kerr, Norbert L., Atkin, Robert S. (1978) Effects of group size, problem difficulty, and sex on group performance and member reactions. Journal of Personality and Social Psychology, 36 (11). pp. 1224-1240. ISSN 0022-3514. (doi:10.1037//0022-3514.36.11.1224) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1037//0022-3514.36.11.1224

Abstract

Examined the influence of group size, task difficulty, and member sex on the relationship between actual productivity and potential productivity proposed by I. D. Steiner (1972), and tested the predictive accuracy of hierarchical and equalitarian latency models proposed by F. Restle and J. H. Davis (1962). 349 undergraduates worked 3 intellectual problems of varying difficulty, either as individuals or in same-sex groups of 2, 3, 6, and 10 members. Actual performance was assessed using indexes of the proportion of solvers and time to solution. Potential performance scores were generated from theoretical models for the same indexes. Group size and problem difficulty were important determinants of group performance, whereas member sex generally was not. Size and difficulty effects varied depending on choice of performance measure. For the proportion index, groups often worked up to potential, but those same groups usually fell below potential on the latency index; they were effective but inefficient. Group performance on both indexes generally fell below potential as size and difficulty increased. The concept of "functional size" is advanced to explain the observed pattern of group performance: As group size increases the number of nonparticipators also increases, resulting in a functional group size smaller than actual size.

Item Type: Article
DOI/Identification number: 10.1037//0022-3514.36.11.1224
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Faculties > Social Sciences > School of Psychology
Depositing User: M.L. Barnoux
Date Deposited: 21 Aug 2014 11:51 UTC
Last Modified: 29 May 2019 12:58 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/42556 (The current URI for this page, for reference purposes)
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