[Latent handedness and individual hemisphericity].
An attempt was made to see the relationship of latent handedness (Luria, 1966) with individual hemisphericity, which was evaluated by a version of Hemisphericity Test (HT) devised by Ogura & Hatta (1983) and Cognitive Mode Questionnaire (CMQ; Sakano & Ohgishi, 1983). Subjects were 125 undergraduates (69 males and 56 females). In males, one of those three criteria for latent handedness, i.e. arm-folding subtest, showed a connection with HT; right-arm-uppermost subjects (R group) preferred verbal to nonverbal stimuli more often than left-arm-uppermost subjects (L group). These results support Sakano's hypothesis that the arm-folding subtest reflects individual hemisphericity (Sakano, 1982). Also, HT scores differed significantly between those two groups classified by CMQ. This result indicates the connection between CMQ and individual hemisphericity, whereas those subtests for latent handedness did not show any relation with CMQ. In females, no significant relation could be found among those three tests. Possibly these sex differences are related with those sex differences responsible for the degree of cerebral asymmetry.
D000293:Adolescent; D000328:Adult; D003071:Cognition / Q000502:physiology; D004292:Dominance, Cerebral / Q000502:physiology*; D005260:Female; D007839:Functional Laterality; D006801:Humans; D007206:Individuality; D008297:Male; D011581:Psychological Tests; D012737:Sex Factors; D011795:Surveys and Questionnaires