Part 9/11:
The speaker elaborates that women seek "a man who brings a benefit to the relationship" because of their vulnerability linked to motherhood. If a woman is highly capable, her standards for a partner's ability to contribute and support increase, which further constricts the compatibility pool. Consequently, there's a "negative relationship between IQ and the probability of being married," emphasizing the social and biological challenges high-achieving women face in forming romantic partnerships.