Humans rely on each other. Mothers, in particular, need help raising children. In this episode we discuss Professor Alessandra Cassar's work seeking to understand how maternal depression relates to gaining social support. We also touch on where evolutionary perspectives may be useful in structuring society more widely. Alessandra Cassar is a professor of economics at the University of San Francisco. Through laboratory and field experiments across the world, her studies focus on the contributions of evolutionary processes to shaping human behavior. Her current research concentrates on the under-studied areas of female competitiveness; the consequences of conflict and disaster victimization for altruism, trust, religiosity, risk, and time preferences; and the role of social networks for economic outcomes.