Observed arrival · 2026-08-27
The Primary Gender Paradox
Steve Hargadon examines why research can find men and women largely similar trait by trait while showing sharper differences across many traits at once.
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Field notes
The article models its argument as two views of the same multidimensional population: individual traits produce heavy overlap, while combinations of traits can separate groups more sharply. It names Janet Hyde and Marco Del Giudice and gives contrasting figures of roughly 80% and 10% overlap, respectively. An audio version is embedded, and the page links onward to the author’s blog, source post, and other writing.
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