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Individual differences on spatial tasks were examined relative to differences in free-androgen levels. A spatial test battery was administered to 91 males and females who differed in free-androgen levels as determined by a radioimmunoassay. Polynomial regression analyses yielded significant curvilinear functions relating spatial scores and androgen levels. A second study, conducted with a group of 33 males and females, replicated the basic findings of the first experiment.

The relationship between androgen levels and human spatial abilities