In the last twenty-years some have tried to reverse the stereotype and assert lefties are in fact more intelligent, more creative, and are higher-achievers than the mundane righties.
But there's no empirical evidence that either characterization is true.
A study done by the University Medical Center Utrecht has a case of good news-bad news for lefties. Left-handed people are more likely to suffer from psychotic disorders and less likely to suffer from depression.
Dutch researchers had also earlier found that left-handed women are more than twice as likely to develop pre-menopausal breast cancer as right-handed women.
The suspect link arises from exposure to high levels of sex hormones in the womb - this can induce left-handedness and may also cause changes in breast tissue and a 40% greater chance to develop schizophrenia.
Lefties are also more fearful, hear sounds differently, have hotter tempers, are more defensive, are prone to boozing, tend to equivocate, and make crappy lovers.
Barak Obama is left-handed.