The Power of Many Small Sex Differences in Cognition, Personality, and Interests

Across 13 cognitive tasks and questionnaires (NF = 1465, NM = 1302), small sex differences in the expected directions combined to correctly classify individuals as male or female in 80% of cases and explained a substantial share of variance in real-life occupational gender segregation.

May 2026 · Agneta Herlitz, Joakim K. E. Frostegård, Martin Asperholm, Richard Bränström, Elizabeth Guest, Joakim Martinsen, Hedda Sonnegård, Kimmo Sorjonen, Lisa B. Thorell, Björn N. Persson
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