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. 2015 May 8;6:558. doi: 10.3389/fpsyg.2015.00558

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Copyright © 2015 Lauer, Udelson, Jeon and Lourenco.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Scatterplot of the relationship between object preference and mental rotation performance. Preference for the truck represents infants’ mean proportional looking time to the toy truck relative to overall looking toward either stimulus (0.50 indicates equivalent looking toward the truck and doll). Mirror stream preference scores reflect mean proportional looking time toward the mirror stream relative to overall looking time (0.50 indicates equivalent looking toward the mirror and non-mirror stream). Boys showed a significant positive correlation between object preference and mental rotation performance (r = 0.43, p < 0.05), whereas the correlation within girls was not statistically significant. Moreover, the correlation within boys was statistically greater than that for girls.