Abstract
This study was conducted to investigate intelligence and visual-perceptual and motor functions in relation to hand dominance and the moderating role of gender and in young adults. The participants included 120 left-handed and right-handed individuals. A demographic questionnaire, the Wechsler Adult Intelligence Scale-Revised (WAIS-R) and the Bender-Gestalt II (BGT-II) were used for data gathering in this study. Analysis did not show any significant differences between left-handed and right-handed individuals in intelligence, performance and both recall and motor subscales of BGT-II in the present study. Findings showed significant group differences for the copy and the perceptual subscales of BGT-II in these samples. Left-handed individuals had significantly higher scores than right-handed individuals in the copy and the perceptual subscales of BGT-II. Also, there were no significant differences between males and females on the WAIS-R and all subscales of the BGT-II in this study. This study indicated the different effect of hand preference in intelligence and visual-perceptual and motor functions among young adults with the moderating role of age.
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