Marian Annett, perhaps the greatest living authority on handedness, believes that we may have developed ‘over-dependence on the left hemisphere at the expense of right hemisphere skills’. She points to the unexpectedly large number of left-handers amongst artists, athletes, and ‘skilled performers of many kinds’.146 A marked difference between the performance of the two hands in right-handers is associated with a slight improvement in the right hand, but the price for this, according to Annett, is that ‘the left hand declines dramatically’, a finding that has been corroborated by many other
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