title: Carrying behavior in humans: analysis of sex differences.
abstract: Behavioral differences between the sexes include methods of carrying books. Females clasp books against their chests; males carry them at their sides. In kindergarten and the first grade, both sexes carry like mature males. Sex-typical carrying appears before adolescence. Behavioral differences seem to be primarily a consequence of morphological differences and social modeling.
authors.forename: D A
authors.initials: DA
authors.lastname: Jenni
authors.forename: M A
authors.initials: MA
authors.lastname: Jenni