Sam Harris speaks with David Buss about the differential mating strategies of men and women. They discuss the controversy that surrounds evolutionary psychology, the denial of sex differences, cross-cultural findings in social science, the replication crisis in psychology, the biological definition of sex, why men and women have affairs, ovulatory shifts in mate preference, sex differences in jealousy and infidelity, the sources of unhappiness in marriage, mate-value discrepancies, what we can learn from dating apps, polyamory and polygamy, the plight of stepchildren, the "Dark Triad" personality type, the MeToo movement, and other topics.

If the Making Sense podcast logo in your player is BLACK, you can SUBSCRIBE to gain access to all full-length episodes at samharris.org/subscribe.

Learning how to train your mind is the single greatest investment you can make in life. That's why Sam Harris created the Waking Up app. From rational mindfulness practice to lessons on some of life's most important topics, join Sam as he demystifies the practice of meditation and explores the theory behind it.