The document discusses whether women choose their partners based on environmental factors, genetic factors, or both. It argues that while genes initially influence a woman's preferences, environmental factors like how she was raised play a larger role over the long run in determining marital quality. Both genetic and environmental factors shape women's choices, but the environment tends to have a greater impact, influencing how women see themselves and what they look for in a partner. Understanding these influences could help reduce divorce and improve relationship satisfaction.