cold fjord writes: Yahoo has a story from Reuters, "Having an unusual personality structure could be the secret to making other people laugh, scientists said
... In a study in the British Journal of Psychiatry, researchers analyzed comedians from Australia, Britain and the United States and found they scored significantly higher on four types of psychotic characteristics compared to a control group of people who had non-creative jobs. The traits included a tendency towards impulsive or anti-social behavior, and a tendency to avoid intimacy. "The creative elements needed to produce humor are strikingly similar to those characterizing the cognitive style of people with psychosis — both schizophrenia and bipolar disorder," said Gordon Claridge of the University of Oxford's department of experimental psychology, who led the study."