Intelligence and handedness: Meta-analyses of studies on intellectually disabled,typically developing,and gifted individuals |
| |
| Affiliation: | 1. Research Centre for Psychophysiology and Education, School of Education, National and Kapodistrian University of Athens, 27 Deinokratous Str, 106 75 Athens, Greece;2. Cognition and Health Research Group, Medical Sciences Division, Department of Experimental Psychology, University of Oxford, Tinbergen Building, 9 South Parks Road, Oxford OX1 3UD, UK;1. Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia, Canada V5A 1S6;2. Department of Psychology, and Centre for Neuroscience, University of Alberta, 116 St. and 85 Avenue, Edmonton, Alberta, Canada T6G 2R3;1. Medical Clinic 1, University of Luebeck, Luebeck, Germany;2. Harold and Margaret Milliken Hatch Laboratory of Neuroendocrinology, The Rockefeller University, New York, NY, USA;1. Institute of Cognitive Neuroscience, Biopsychology, Ruhr-University Bochum, Germany;2. Department of Biological and Medical Psychology, University of Bergen, Norway;3. Division of Psychiatry, Haukeland University Hospital, Bergen, Norway;4. Department of Radiology, Haukeland University Hospital, Bergen, Norway;5. NORMENT Center of Excellence, University of Bergen, Norway;1. Department of Psychological and Brain Sciences, Indiana University, 1101 E. 10th St., Bloomington, IN, United States;2. Center for Mind, Brain, and Education, University of Texas at Arlington, Box 19545, Planetarium Place, Hammond Hall #416, United States;1. Department of Psychology, University of Westminster, 309 Regent Street, London, W1B 2HW England, United Kingdom;2. Centre for Brain and Cognitive Development, Department of Psychological Sciences, Birkbeck University of London, Malet Street, London, WC1E 7HX England, United Kingdom |
| |
| Abstract: | ![]()
Understanding the relationship between cerebral laterality and intelligence is important in elucidating the neurological underpinnings of individual differences in cognitive abilities. A widely used, behavioral indicator for cerebral laterality, mainly of language, is handedness. A number of studies have compared cognitive abilities between groups of left- and right-handers, while others have investigated the handedness prevalence between groups of different cognitive abilities. The present study comprises five meta-analyses of studies that have assessed the handedness prevalence in (a) individuals with intellectual disability (ID) of unknown/idiopathic nature compared to typically developing (TD) individuals, and (b) individuals with intellectual giftedness (IG) compared to TD individuals. Nineteen data sets totaling 16,076 participants (5795 ID, 8312 TD, and 1969 IG) were included in the analyses. Elevated levels of atypical handedness were found to be robust only for the ID to TD comparison. Findings constrain the range of acceptable theories on the handedness distribution for different intelligence levels. |
| |
| Keywords: | IQ Language laterality Behavioral laterality Intellectual disability Intellectual giftedness Hand preference |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
