In this video, Laurie Santos (Yale University) explains why our memories of good and bad events are a biased. Specifically, she explains how our retrospective evaluations fall prey to the peak-end effect— a bias in which we overweight the peak and end of our everyday experiences— and how this bias leads us to ignore other features of the event like its duration. Help us caption & translate this video! http://amara.org/v/HHM5/