What are the differences between left- and right-handers?

We investigated the differences between left-handers and right-handers using the results of neuropsychological assessment. The sample included 570 healthy children aged 4-17 years (52 left-handed, 518 right-handed persons). For most mental functions no differences were found. Left-handers have an advantage only in acoustic gnosis and praxis of the non-leading hand.