Are left-handers less violent?

Previous work has shown that left-handers are overrepresented among juvenile offenders. The present study was designed to test whether left-handers are also overrepresented among violent juvenile offenders. However, opposite to expectation, the results showed that left-handed offenders scored lower than right-handed offenders on the Violence Scale, a measure of the violence potential of offenses read from the legal record. The unexpected effect was consistent over four sex-ethnicity subgroups. Possible explanations concerned sex-handedness interactions and hemisphericity effects.