Dr. Woo-Kyoung Ahn is a psychologist and professor of Psychology at Yale University. Dr. Ahn joins the Armchair Expert to discuss how human thinking has evolved over time, how traumatic events can be measured, and what the concept of causal attribution means. Dr. Ahn and Dax talk about the different ways humans confirm their own bias, how people speak differently to their out-groups than their in-groups, and how you rationalize getting cut off in traffic. Dr. Ahn explains what the effects of rumination are on your brain, what the allure of fluency is, and how you are often overconfident in trying to understand others' intentions.