Abstract
In this study, we investigate the association between a number of hormonal variables (circulating testosterone, facial masculinity, 2D:4D digit ratio, and cortisol) and competitiveness in a sample of 93 men aged 18-23. Competitiveness is measured by self-selection into a competitive setting versus a piece-rate scheme. We find no robust correlations between any of the hormonal variables and competiveness, though there are some suggestive patterns in the data which merit further exploration.
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