NDLI: The Relation of Hand Preference to Hand Performance in Left-Handers: Importance of the Left Brain

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The Relation of Hand Preference to Hand Performance in Left-Handers: Importance of the Left Brain

Content Provider	Scilit
Author	Tan, Uner
Copyright Year	1992
Description	The associations among hand preference, hand skill (peg moving time, PMT) and hand performance (dot filling/20 s) were analyzed in left-handed subjects. In the total sample, the degree of left-hand preference linearly decreased from -100 to zero (Geschwind scores, GSs) as the number of dots placed by the right hand increased (direct correlation); the left hand did not show any significant relation to GSs. The right-hand PMT linearly decreased as the GSs decreased (negative linear correlation); the left hand skill did not exhibit any significant correlation with GSs. There was a negative linear correlation between right-hand PMT and dot-filling with right hand; the left-hand PMT was not related to dot-filling with left hand. In males, the right-hand PMT showed a negative linear correlation with GSs; no significant correlation between PMT and GSs was found for the left hand. There was a negative linear correlation between right minus left (R - L) PMT and GSs. Dot-filling with right hand was found to be positively linearly correlated with GSs (no correlation for the left hand). The L - R dot-filling showed a negative linear correlation with GSs. PMT for the right hand exhibited a significant negative linear relation to dot-filling only with right hand. Sex and familial sinistrality caused minor changes in these relationships. It was concluded that the left brain would constitute the main factor determining the degree of left-handedness.
Related Links	http://www.tandfonline.com/doi/pdf/10.3109/00207459209003272
ISSN	00207454
e-ISSN	15435245
DOI	10.3109/00207459209003272
Journal	International Journal of Neuroscience
Issue Number	1-4
Volume Number	65
Language	English
Publisher	Informa UK Limited
Publisher Date	1992-01-01
Access Restriction	Open
Subject Keyword	Journal: International Journal of Neuroscience Ergonomics Gss Hand Preference Linearly Dot Filling Hand Pmt
Content Type	Text
Resource Type	Article
Subject	Neuroscience Medicine

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