Is it hand discrimination? You be the judge, but the study also shows lefties may have issues in other areas of life.

This study comes from Harvard public policy professor Joshua Goodman. He writes that lefties are perceived to be unusually talented. After all, four of the last seven presidents were left handed!

Goodman found that between test scores and salaries, lefties have 10 to 12 percent lower annual earning than righties. It doesn't stop there.

Goodman says this study also shows that, on cognitive skills tests, lefties continue to struggle. They also struggle with more emotional and behavioral problems. What about the creativity? This study shows that theory is fairly weak.

Lefties, what do you think? Do you find yourself struggling a bit more than your righty friends?