Performance on a Mirror-Drawing Task by Non-Right-Handers |
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Authors: | Braj Bhushan C. B. Dwivedi R. Mishra Manas K. Mandal |
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Affiliation: | 1. Banaras Hindu University , India;2. B. R. A. Bihar University , India;3. Indian Institute of Technology , India |
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Abstract: | Left-, mixed-, and right-handed (each n = 10, N = 30) adolescent boys who were classified on the basis of a hand preference inventory performed a mirror-drawing task with a bilateral transfer of a skill paradigm. Participants' hand preference and the magnitude of bilateral transfer of skill were assessed in terms of errors committed and time taken to complete the mirror-drawing task. Mixed-handed participants exhibited significantly less habit interference for mirror drawing, and they performed the task significantly faster than the left-handers did; the group difference was not significant for the frequency of errors committed. These groups did not differ in terms of the magnitude of bilateral transfer of skill; the trend, however, showed that the transfer of skill was minimum in mixed-handers. These findings extend the theory that mixed-handed participants' inability to transfer motor skill from one hand to the other could be attributable to their lack of a clear pattern of lateralization. Their ability to perform well either at initial or later trials may be a function of less interference from their normal motor habits. |
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Keywords: | dehydroepiandrosterone sulfate mice progesterone spatial memory |
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