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Sex differences, Infants, Mental rotation
A sex difference on mental-rotation tasks has been demonstrated repeatedly, but not in children less than 4 years of age. To demonstrate mental rotation in human infants, we habituated 5-month-old infants to an object revolving through a 240° angle. In successive test trials, infants saw the habituation object or its mirror image revolving through a previously unseen 120° angle. Only the male infants appeared to recognize the familiar object from the new perspective, a feat requiring mental rotation. These data provide evidence for a sex difference in mental rotation of an object through three-dimensional space, consistently seen in adult populations.
© 2008 Association for Psychological Science
Moore, D. S. & Johnson, S. P. (2008). Mental rotation in human infants: A sex difference. Psychological Science, 19(11), 1063 - 1066.