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Direct linkWhitaker, Simon – Intellectual and Developmental Disabilities, 2008
A meta-analysis of the stability of low IQ (IQ less than 80) was performed on IQ tests that have been commonly used--tests that were derived by D. Wechsler (1949, 1955, 1974, 1981, 1991, 1997) and those based on the Binet scales (L. M. Terman, 1960; L. M. Terman & Merrill, 1972). Weighted-mean stability coefficients of 0.77 and 0.78 were found…
Descriptors: Intelligence Tests, Intelligence Quotient, Evaluation Methods, Test Validity
Download full textSlemon, Jill C.; Shafrir, Uri – 1998
This study investigated how obtaining predicted and actual scores on aptitude tests can provide crucial information regarding personal beliefs about ability. The ACID profile of the Wechsler Adult Intelligence Scale (Revised) (WAIS-R) was used to collect the subjective and objective scores of 92 college students with severe scholastic deficits…
Descriptors: Academic Ability, Academic Achievement, College Students, Evaluation Methods
