218 college students (96 men and 122 women, including nearly equal numbers of right-handers and left-handers) were administered a modified version of the “Gallup Geography Test.” Men outperformed women, and left-handed women outperformed right-handed women. We suggest that these results cannot be easily explained by any credible sociocultural model but are consistent with a neuropsychological model of sex and handedness differences in spatial ability advanced by Harsh-man, Hampson, and Berenbaum in 1983.
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