Before revision: Hrdy's hypothesis An infant lutung ( Old World monkey ) Hrdy's hypothesis is an extension of the male assistance hypothesis, in that both hypotheses argue that women have evolved this adaptation to gain some tangible benefit from males.
After revision: Hrdy's hypothesis An infant Old World monkey Hrdy's hypothesis is an extension of the male assistance hypothesis, in that both hypotheses argue that women have evolved this adaptation to gain some tangible benefit from males.