Paul Bloom (Psychologist at Yale) did a fascinating talk on a whole lot of different examples of psychological contagions: http://www.youtube.com/watch?v=lWOfP

Paul Bloom (Psychologist at Yale) did a fascinating talk on a whole lot of different examples of psychological contagions: http://www.youtube.com/watch?v=lWOfP-Lubuw http://www.youtube.com/watch?v=lWOfP-Lubuw