Dichotic listening performance and writing posture in right- and left-handers.
Right-handers and left-handers with the inverted (IN) and noninverted (NI) writing posture were tested on a dichotic consonant-vowel listening task and on two motor tasks (hand strength and speed of tapping). The results failed to show the differences between IN and NI right-handers reported by S. M. Tapley and M. P. Bryden (1983, Neuropsychologia, 21, 129-138) and there were no significant handedness x writing posture x ear interactions. A significant interaction between dichotic listening performance and writing posture was found; NI right-handers and IN left-handers had more correct responses and fewer intrusions than IN right-handers and NI left-handers. Left-handers and right-handers were found to have a right ear advantage (REA) in the dichotic listening task but left-handers had relatively smaller left/right differences in all of the performance measures. Sample characteristics suggest that there are more IN male right-handers than IN female right-handers.
Department of Psychology, University of Guelph, Ontario, Canada.
M
M
Peters
J
J
McGrory
D000328:Adult; D001288:Attention; D004292:Dominance, Cerebral; D005260:Female; D007839:Functional Laterality; D006236:Handwriting; D006801:Humans; D008297:Male; D010700:Phonetics; D011187:Posture; D000091402:Prohibitins; D013067:Speech Perception