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left-handedness

   Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson 0.01 sec.
left-handedness: see handedness handedness, habitual or more skillful use of one hand as opposed to the other. Approximately 90% of humans are thought to be right-handed. It was traditionally argued that there is a slight tendency toward asymmetrical physiological development favoring the right
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Wells says that hormone levels may help explain sex differences in paw choice, for studies conducted in the past have linked prenatal testosterone exposure to left-handedness.
For instance, some may award a scholarship for left-handedness, artistic talent, excellent written communication skills, and even either below or over a specified height.
Given that the vast majority of humans are right-handed, why is it that left-handedness -- of which President Barack Obama is a proud practitioner -- is still around?
 
 
 
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