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Physiologically, the predilection for favoring one hand for manual dexterity and arm strength over the other is neurological (where in the brain the impulses generate), but apparently reversible with practice. The sociological ramifications of handedness, however, are more complicated. Up until the 1950’s, left-handed was “corrected” in schools as an undesirable trait, one that would harm handwriting, and even curtail the ability to think clearly. Gradually, that practice was abandoned as doing more harm than good psychologically, in the opinion of child psychologists, because it made the child feel different, and therefore sub-normal. An interesting reversal took place in the 21st century, however—lefthandedness was detecting in a large number of creative people—artists, musicians, etc.—and there seemed to be some statistic correlation between lefthandedness and intelligence. The physical disadvantages gave way as products began to be designed to accommodate both tendencies. Now, sociological, it is a mere curiosity.
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