Debra Lieberman
Evolutionary psychologist and professor specializing in kin detection, inbreeding avoidance, and the evolution of emotions, author of research on grief, gratitude, and incest avoidance.
Best podcasts with Debra Lieberman
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Jan 3, 2026 • 1h 9min
#1041 - Dr Debra Lieberman - Why Don’t You Have Sex With Your Sister?
Dr. Debra Lieberman, an evolutionary psychologist, dives into the fascinating mechanics behind why humans are hardwired to avoid incest, sharing insights from her extensive research. She discusses how animals detect kin through various cues and how this translates to human behavior. The moral complexities of incest, genetic risks of cousin relationships, and the unique impact of childhood co-residence are explored. Additionally, they touch on the intriguing social signaling of tears, highlighting their role in communication and social dynamics.
Mar 31, 2025 • 1h 15min
#1078 Debra Lieberman: The Psychology of Disgust, Gratitude, and Emotional Tears
Join Debra Lieberman, a psychology professor at the University of Miami and author of "Objection: Disgust, Morality, and the Law," as she dives into the intriguing world of emotions through an evolutionary lens. Discover how disgust influences moral judgments and social norms. She delves into the role of gratitude in fostering cooperation within relationships and examines the dual function of tears as both protective and communicative. This lively discussion reveals the fascinating connections between emotions, societal dynamics, and our evolutionary past.
