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Updated: Mar 22, 2026

Assessing Differences in Sperm Competitive Ability in Drosophila
Published on: August 22, 2013
Competing for the benefit of offspring eliminates the gender gap in competitiveness
Alessandra Cassar1, Feven Wordofa2, Y Jane Zhang3
1Department of Economics, University of San Francisco, San Francisco, CA 94117; acassar@usfca.edu janezhang@ust.hk.
Abstract:
Recent advances have highlighted the evolutionary significance of female competition, with the sexes pursuing different competitive strategies and women reserving their most intense competitive behaviors for the benefit of offspring. Influential economic experiments using cash incentives, however, have found evidence suggesting that women have a lower desire to compete than men. We hypothesize that the estimated gender differences critically depend on how we elicit them, especially on the incentives used. We test this hypothesis through an experiment with adults in China (n = 358). Data show that, once the incentives are switched from monetary to child-benefitting, gender differences disappear. This result suggests that female competition can be just as intense as male competition given the right goals, indicating important implications for policies designed to promote gender equality.
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