Add Yahoo as a preferred source to see more of our stories on Google. Being excluded isn't easy, but it does teach you about other people. Alistair Berg/DigitalVision via Getty Images Imagine finding ...

Waiting between rewards may help the brain learn faster. New research shows timing, not repetition, drives stronger learning updates.

Imagine finding out your friends hosted a dinner party and didn't invite you, or that you were passed over for a job you were excited about. These moments hurt, and people often describe rejection in ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Begüm Babür, University of Southern California (THE CONVERSATION) Imagine finding out ...