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Fine motor skill performance in left- and right-handers: evidence of an advantage for left-handers

Judge, Jeannie and Stirling, John D. (2003) Fine motor skill performance in left- and right-handers: evidence of an advantage for left-handers. brain and cognition, 8 (4). pp. 297-306. ISSN 1357-650X

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Abstract

A total of 22 right-handed and 22 left-handed participants performed tasks on a well-established test of manual dexterity in addition to completing the Waterloo Handedness Questionnaire. Analysis of Variance revealed that left-handers performed significantly better on the Purdue pegboard test when the task relied on the co-ordination of both the left and right hands. Multiple regression analysis indicated that the Purdue pegboard assembly task is a predictor of self-reported hand preference and of handedness when classified by the Waterloo Handedness Questionnaire. Left-handers showed a smaller performance difference between hands, suggesting an advantage in using their non-preferred hand, although this did not lead to a better performance on a bimanual placement task. These results suggest that left-handers perform more proficiently when hand actions have to be alternated in completing a task. The superior performance of the non-preferred hand in left-handers might be explored to develop future behavioural predictors of handedness

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