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ERIC Number: EJ800242
Record Type: Journal
Publication Date: 2008-Jun
Pages: 5
Abstractor: As Provided
Reference Count: N/A
ISSN: ISSN-1934-9556
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.
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:; Web site:
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Wechsler Adult Intelligence Scale