Of course there is a bias in this study with people in Mensa. There is also an added bias: people tested for IQ (in Europe) are tested because of behaviour issu

Of course there is a bias in this study with people in Mensa. There is also an added bias: people tested for IQ (in Europe) are tested because of behaviour issues usually. the interesting question is imho what do you think (from your experience). Are you/your friends with high IQ psychological issues? I've read previously that high IQ protects from such trouble