This article examines the effect of infant care on women's contribution to subsistence. Results suggest that women who begin supplementary feeding of their infants early participate in subsistence activities to a greater degree than women who begin supplementary feedings later.

This article examines variation in kinship terminology. The authors develop a new typology of kinds of kinship terminologies, and they propose that terminologies will distinguish siblings of the same and opposite gender when there is a cultural emphasis on cross-sex relations. Empirical analysis supports that a prolonged post-partum sex taboo (rather than sibling avoidance) predicts the presence of a primary cross-parallel component in sibling terminology.