Why do we do the things we do? Despite our best attempts to "know thyself," the truth is that we often know astonishingly little about our own minds, and even less about the way others think. As Charles Dickens once put it, “A wonderful fact to reflect upon, that every human creature is constituted to be that profound secret and mystery to every other.”
Psychologists have long sought insights into how we perceive the world and what motivates our behavior, and they've made enormous strides in lifting that veil of mystery. Aside from providing fodder for stimulating cocktail-party conversations, some of the most famous psychological experiments of the past century reveal universal and often surprising truths about human nature. Here are 10 classic psychological studies that may change the way you understand yourself.