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The IQs of Children with ADHD Are Normally Distributed.
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Kaplan, Bonnie J.; Crawford, Susan G.; Dewey, Deborah M.; Fisher, Geoff C. – Journal of Learning Disabilities, 2000
The vocabulary and block design short forms of the Wechsler Intelligence Scale for Children-Third Edition were administered to 63 children with attention deficit hyperactivity disorder (ADHD), 69 children with reading difficulties (RD), and 68 children with comorbid ADHD and RD. No significant differences were found. (Contains references.)…
Descriptors: Attention Deficit Disorders, Children, Cognitive Ability, Intelligence Differences
Assessment of Children Referred for Evaluation of School Difficulties Who Have Adequate Academic Achievement Scores.
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Morgan, Allison E.; Singer-Harris, Naomi; Bernstein, Jane H.; Waber, Deborah P. – Journal of Learning Disabilities, 2000
Forty children (ages 7-11) referred for evaluation of learning problems, who had normal scores on measures of academic achievement, were compared to 81 similarly referred children who had scored low. Children with normal achievement scores had higher IQs and better decoding skills, however, the two groups showed similar neuropsychological…
Descriptors: Academic Achievement, Children, Cognitive Processes, Elementary Education
ADHD and Reading Disabilities: A Cluster Analytic Approach for Distinguishing Subgroups.
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Bonafina, Marcela A.; Newcorn, Jeffrey H.; McKay, Kathleen E.; Koda, Vivian H.; Halperin, Jeffrey M. – Journal of Learning Disabilities, 2000
Using cluster analysis, a study empirically divided 54 children with attention-deficit/hyperactivity disorder (ADHD) based on their Full Scale IQ and reading ability. Clusters had different patterns of cognitive, behavioral, and neurochemical functions, as determined by discrepancies in Verbal-Performance IQ, academic achievement, parent…
Descriptors: Academic Achievement, Aggression, Attention Deficit Disorders, Children
Differential Genetic Etiology of Reading Disability as a Function of IQ.
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Wadsworth, Sally J.; Olson, Richard K.; Pennington, Bruce F.; DeFries, John C. – Journal of Learning Disabilities, 2000
Composite reading performance data from 223 pairs of identical twins and 169 same-gender fraternal twins in which at least one member was classified with reading disability were subjected to multiple regression analysis. Results indicated that the genetic etiology of reading disability differs as a linear function of IQ. (Contains extensive…
Descriptors: Biological Influences, Children, Disability Identification, Environmental Influences