Dana and David Are Twins

Multiple Choice

Dana and David are twins. Their father finds that David is an active and occasionally an irritable infant who normally enjoys roughhousing but may become angered if pushed too far. By contrast, Dana is a docile child who would rather play quietly at games like pat-a-cake, so that Dad is less inclined to roughhouse while playing with her. David is more aggressive than Dana. These observations seem most consistent with the _____ view on sex differences in aggression.

A) biological
B) social
C) interactive
D) ethological