psychological effects
The Bad Apple: Group Poison
A recent episode of This American Life [http://www.thisamericanlife.org/radio-archives/episode/370/ruining-it-for-the-rest-of-us] interviewed Will Felps, a professor who conducted a sociological experiment demonstrating the surprisingly powerful effect of bad apples [http://www.thisamericanlife.org/radio-archives/episode/370/ruining-it-for-the-rest-of-us] . Groups of four college students were organized into teams