Lateralization of speech production using verbal/manual dual tasks: meta-analysis of sex differences and practice effects.
The present paper reviews the findings of 30 years of verbal/manual dual task studies, the method most commonly used to assess lateralization of speech production in non-clinical samples. Meta-analysis of 64 results revealed that both the type of manual task used and the nature of practice that is given influence the size of the laterality effect. A meta-analysis of 36 results examining the effect size of sex differences in estimates of lateralization of speech production indicated that males appear to show slightly larger laterality effects than females.
Medland
S E
SE
Cognitive Psychophysiology Laboratory, School of Psychology, University of Queensland and Queensland Health, Edith Caval Building, Herston, Brisbane, Australia.
Geffen
G
G
McFarland
K
K
D001288:Attention; D004292:Dominance, Cerebral; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D011214:Practice, Psychological; D011597:Psychomotor Performance; D012737:Sex Factors; D014705:Verbal Behavior