Handedness and intelligence.
The scores of 37 right and 30 left-handed subjects on tests of fluid and crystallized intelligence were compared. Consistent with the hypothesis, it was found that the left-handers were inferior to the right-handers on the Gf task. These data are consistent with those from three earlier studies and serve to question the assertion that there are no handedness related differences in ability.
D007839:Functional Laterality; D006801:Humans; D007360:Intelligence; D011581:Psychological Tests