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Psychol Sci. 2008 Nov;19(11):1067-70. doi: 10.1111/j.1467-9280.2008.02201.x.

A sex difference in mental rotation in young infants.

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Department of Psychology, University of Delaware, Newark, DE 19716, USA.


Three- to 4-month-old female and male human infants were administered a two-dimensional mental-rotation task similar to those given to older children and adults. Infants were familiarized with the number 1 (or its mirror image) in seven different rotations between 0 degrees and 360 degrees, and then preference-tested with a novel rotation of the familiar stimulus paired with its mirror image. Male infants displayed a novelty preference for the mirror-image stimulus over the novel rotation of the familiar stimulus, whereas females divided attention between the two test stimuli. The results point toward an early emergence of a sex difference in mental rotation.

[Indexed for MEDLINE]

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