Paul Zak of Psychology Today's Moral Molecule delves into why we cry at movies. The verdict?
"So, we cry at movies because THOMAS is a fuzzy system. It does not differentiate between actual human beings and flickering images of human beings. Either one is enough to kick THOMAS into high gear and impel our empathy. And it reveals why men like me avoid chick flicks--we don't want to be seen bawling when the guy finally gets the girl."
Click to find out who (or what) THOMAS is.