left-handedness - Hutchinson encyclopedia article about left-handedness Printer Friendly
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left-handedness

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left-handedness

Using the left hand more skilfully and in preference to the right hand for most actions. It occurs in about 9% of the population, predominantly males. It is caused by dominance of the right side of the brain.

Studies of twins suggest that there are genetic factors involved, but the precise causes for left-handedness (as for the predominant right-handedness) have remained elusive.



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Starting pitcher Greg Maddux, the Hall of Famer, got no farther than Derek Lowe, the postseason stud, or Hong-Chih Kuo, with his Mets-killing left-handedness.
DODGERS OWE BEIMEL A BEER by Daily News (Los Angeles, CA)
However, a few studies have suggested that it might cause neurological changes, such as delayed speech or an increase in left-handedness.
Bad vibrations? Ultrasound disturbs mouse brains by Brownlee, C. / Science News
Results suggested that men afflicted with an anomalous erotic preference, namely, for the very immature physique, generally had substantially lower IQs than teliophiles, had a substantially greater incidence of left-handedness (almost 33% vs.
Neurodevelopmental Correlates of Atypical Sexual Preferences by The Journal of Sex Research
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