
The hidden calculations that determine whether you will cry
We think of tears as an overflow of emotion, but an evolutionary lens shows they’re a rational form of social signalling
by Daniel Sznycer & Debra Lieberman
Debra Lieberman is professor in the Department of Psychology at the University of Miami. She is co-author of Objection: Disgust, Morality and the Law (Oxford University Press, 2018) and currently serves as editor-in-chief for the journal Evolution and Human Behavior.