ERIC Number: EJ800242
Record Type: Journal
Publication Date: 2008-Jun
Abstractor: As Provided
Reference Count: N/A
A Comparison of Low IQ Scores from the Reynolds Intellectual Assessment Scales and the Wechsler Adult Intelligence Scale--Third Edition
Umphress, Thomas B.
Intellectual and Developmental Disabilities, v46 n3 p229-233 Jun 2008
Twenty people with suspected intellectual disability took the Reynolds Intellectual Assessment Scales (RIAS; C. R. Reynolds & R. W. Kamphaus, 1998) and the Wechsler Adult Intelligence Scale--3rd Edition (WAIS-III; D. Wechsler, 1997) to see if the 2 IQ tests produced comparable results. A t test showed that the RIAS Composite Intelligence Index scores were significantly higher than WAIS-III Full Scale IQ scores at the alpha level of 0.01. There was a significant difference between the RIAS Nonverbal Intelligence and WAIS-III Performance Scale, but there was no significant difference between the RIAS Verbal Intelligence Index and the WAIS-III Verbal Scale IQ. The results raise questions concerning test selection for diagnosing intellectual disability and the use of the correlation statistic for comparing intelligence tests.
Descriptors: Intelligence, Mental Retardation, Test Selection, Intelligence Tests, Intelligence Quotient, Measures (Individuals), Nonverbal Ability, Comparative Analysis, Scores, Correlation
American Association on Intellectual and Developmental Disabilities. P.O. Box 7065, Lawrence, KS 66044-7065. Tel: 785-843-1235; Fax: 785-843-1274; e-mail: AJMR@allenpress.com; Web site: http://aamr.allenpress.com
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Wechsler Adult Intelligence Scale