Hand preference across time is related to intelligence in young girls, not boys

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Science  09 Sep 1983:
Vol. 221, Issue 4615, pp. 1074-1076
DOI: 10.1126/science.6879205


Consistency of hand preference was examined in a longitudinal study of children between 18 and 42 months of age. Results showed a sex-specific relationship between hand consistency and intellectual development. Across a variety of intellectual abilities at all ages, females with consistency of handedness were precocious compared to females without such consistency. This relationship did not hold for males.