Group size and group success in conflicts

Martin Kolmar () and Hendrik Rommeswinkel
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Martin Kolmar: University of St. Gallen

Social Choice and Welfare, 2020, vol. 55, issue 4, No 6, 777-822

Abstract: Abstract This paper analyzes the occurrence of the group-size paradox in situations in which groups compete for rents, allowing for degrees of rivalry of the rent among group members. We provide two intuitive criteria for the group-impact function which for groups with within-group symmetric valuations of the rent determine whether there are advantages or disadvantages for larger groups: social-interactions effects and returns to scale. For groups with within-group asymmetric valuations, the complementarity of group members’ efforts and the composition of valuations are shown to play a role as further factors.

Date: 2020
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DOI: 10.1007/s00355-020-01264-0

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