Patterns of handedness in modern Japanese: a cohort effect shown by re-administration of the H.N. Handedness Inventory after 20 years.
The H.N. Handedness Inventory, originally administered to a sample of 1199 Japanese students in 1973, was administered to a new sample of 1700 Japanese students 20 years later. It was found that the population of left-handed and ambidextrous females had increased. The incidence of inverted left-hand writers was very small. Comparison of the two sets of data demonstrates the effects of non-biological factors upon lateral preference.
Hatta
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Nagoya University, Japan.
Kawakami
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A
D000328:Adult; D005260:Female; D007839:Functional Laterality; D006801:Humans; D007564:Japan; D008297:Male; D011187:Posture; D014956:Writing