7 things you didn't know about lefties

Lefties make up around 10% of the world 's population, and studies have uncovered a set of personality traits that lefties tend to have, according to the Huffingpost .

Scientists aren't entirely sure, but research points to a complex collaboration between genes and the environment that causes a person to be left- handed .

For this reason, we present some facts that you did not know about left- handers :

1. According to research published in the Wall Street Journal , lefties are at higher risk for brain and learning disorders . About 20% of people with schizophrenia predominantly use the left hand .

2. Left- handed people are more likely to gravitate toward more artistic or innovative pursuits or careers, according to research published in the American Journal of Psychology . They are most attracted to careers in the arts, music, sports, and information technology fields.

3. According to a recent study presented at the British Psychological Society , left- handed people tend to be more affected by fear than right- handers . After experiencing a terrible event, they exhibit behaviors similar to post-traumatic stress disorder .

4. According to a study published in the Journal of Nervous and Mental Diseases , left- handers are more likely to have negative emotions, plus it takes them longer to assimilate and process their feelings.

5. Lefties have a greater tendency to doubt, feel more inhibited, shy and embarrassed, explain scientists from the University of Abertay in Scotland .

6. In the United States, left- handed people earn, on average, 10% less salary compared to right- handed people .

7. August 13 is International Left-handed Day, a date first celebrated in the UK in 1992.