Psychologists who studied more than 100 chess players say the game attracts sensation-seekers with a thirst for action and adventure on a par with skydivers, scuba divers, mountaineers and skiers. When men win a game, the experts say, the rise of testosterone levels in the blood is just the same as that experienced by people who go in for risky sports.You can read the whole thing here, but I have my doubts. Although the following rang a bit more true: "competitive chess players have been shown to score highly for unconventional thinking and paranoia".
Oh, I don't know. What are we like?