Abstract des Autors

Manual asymmetry in the one-handed consecutive discrimination of lifted weights was investigated as a function of sex and hand preference. Just noticeable differences (JNDS) were measured for the dominant and non-dominant hand of left and right-handed male and female subiects. JNDS were found to be significantly lower a) on the non-dominant than on the dominant hand of our subjects and b) in males than in females when tested with the non-dominant hand. These results establish the existence of a manual asymmetry for the discrimination of lifted weights with the advantage accruing for the male subjects and for the hand contralateral to the non-language cerebral hemisphere. The relative contributions of these findings to motor skill acquisition are discussed. Verf.-Referat