Gottfried A W, Bathurst K
Science. 1983 Sep 9;221(4615):1074-6. 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.
