Hand preference in a normal population |
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Authors: | S J Ellis P J Ellis E Marshall |
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Affiliation: | Department of Medicine, Frimley Park Hospital, Camberley, Surrey. |
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Abstract: | The Edinburgh Inventory was used to assess handedness in a normal population. The incidence of strong right-handedness increased with age and the incidence of left-handedness fell with age, both significantly. A non-significant increase in the incidence of left-handedness in twins was observed. The difference in the incidence of left-handedness for males and females failed to reach significance but more males were left-handed than females. Any difference in the incidence of left-handedness between the sexes must be small (less than 1.5%) and this has major theoretical implications. |
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