ERIC Number: EJ1090705
Record Type: Journal
Publication Date: 2016
Abstractor: As Provided
Structural Validity of the WISC-IV for Students with Learning Disabilities
Styck, Kara M.; Watkins, Marley W.
Journal of Learning Disabilities, v49 n2 p216-224 Mar-Apr 2016
The structural validity of the "Wechsler Intelligence Scale for Children-Fourth Edition" (WISC-IV) was evaluated using confirmatory factor analysis for a clinical sample of 1,537 students diagnosed with specific learning disabilities (SLD) by school psychologists in two large southwestern school districts. Results indicated that a bifactor model consisting of four first-order domain specific factors and a general intelligence breadth factor fit the data best. Consequently, the structural validity of the WISC-IV for students with SLD was supported by the results of the present study. The general intelligence factor contributed the most information, accounting for 48% of the common variance. Given this structure, it was recommended that score interpretation should emphasize the Full-Scale IQ score because of the marginal contributions of the first-order domain-specific factors and their low precision of measurement independent of the general factor.
Descriptors: Intelligence Tests, Children, Test Validity, Factor Analysis, Learning Disabilities, Intelligence, Intelligence Quotient, Scores
SAGE Publications and Hammill Institute on Disabilities. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: firstname.lastname@example.org; Web site: http://sagepub.com
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Wechsler Intelligence Scale for Children