ERIC Number: EJ773138
Record Type: Journal
Publication Date: 2007-Jun
Reference Count: N/A
Wechsler Intelligence Scale for Children-Third and -Fourth Edition: Predictors of Academic Achievement in Children with Attention-Deficit/Hyperactivity Disorder
Mayes, Susan Dickerson; Calhoun, Susan L.
School Psychology Quarterly, v22 n2 p234-249 Jun 2007
IQ and achievement scores were analyzed for 678 children with attention-deficit/hyperactivity disorder (ADHD; 6-16 years of age, IQ=80) administered the Wechsler Intelligence Scale for Children-Third Edition (WISC-III; n=586) and Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV, n=92). Approximately 76% of children in both samples were identified with a learning disability (LD). LD in written expression was more common than in reading or math. For both the WISC-III and the WISC-IV, full-scale IQ was the strongest single predictor of achievement in all areas. The verbal subtests comprising the Freedom from Distractibility/Working Memory Index (FDI/WMI) and Verbal Comprehension Index were more highly correlated with achievement scores than the nonverbal subtests on both the WISC-III and WISC-IV. The most powerful predictors of LD, however, were the FDI/WMI and Processing Speed Index (PSI) subtests. These findings suggest that verbal intelligence is more influential in determining level of academic achievement, whereas cognitive abilities assessed by FDI/WMI and PSI are more important in determining LD in children with ADHD.
Descriptors: Measures (Individuals), Memory, Cognitive Ability, Intelligence, Intelligence Quotient, Learning Disabilities, Hyperactivity, Academic Achievement, Intelligence Tests, Attention Deficit Disorders, Verbal Ability
American Psychological Association. Journals Department, 750 First Street NE, Washington, DC 20002-4242. Tel: 800-374-2721; Tel: 202-336-5510; Fax: 202-336-5502; e-mail: firstname.lastname@example.org; Web site: http://www.apa.org/publications
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Wechsler Intelligence Scale for Children