II. The comparability of the WISC-R and WAIS among 16-year-old EMR children

Nagle, Richard J.; Lazarus, Susan C.

doi:10.1016/0022-4405(79)90038-4

Cited by 12 publications

(6 citation statements)

References 10 publications

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“…All 26 students had higher WAIS IQs. These results are quite compatible with findings, in counterbalanced designs, that the mean WAIS Full Scale IQs (75 to 77) of 16-year-old public school special education students were 12 to 13 points higher than their mean WISC-R Full Scale IQs (Craft & Kronenberger, 1979;Nagle & Lazarus, 1979). The mean retest interval in those studies was 37 days and 10 days, respectively, and the latter study reported a .81 correlation.…”

Section: Wisc-r/waissupporting

confidence: 91%

Intratest and Intertest Reliability and Stability of the Wisc, Wisc-R, and Wais Full Scale Iqs in a Mentally Retarded Population

Spitz¹

1983

J Spec Educ

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The reliability and stability of the Full Scale IQ scores of retarded adolescents and young adults on 3 Wechsler Scales were measured. For mean retest intervals ranging from about 1.75 to 3.5 years, intratest reliability and constancy were reasonably good, although a significant rise in mean IQ was found for the WISC-R retest. Intertest reliability was also inadequate, but intertest constancy was not. The mean WISC-R IQ was significantly lower than the mean WISC IQ, and both were dramatically lower than the mean WAIS IQ. Comparisons are made with previous findings and implications of these results are discussed.The periodic retesting of large numbers of individuals in residential facilities provides the opportunity for analysis of the stability and comparability of standardized intelligence tests for specified populations. The present study assesses the constancy and intertest correlations of the Full Scale IQ scores of retarded individuals who have been or who now are residents at the Johnstone Center, an open, relatively short-term residential facility housing primarily mildly and moderately retarded adolescents and young adults. This population provides a particularly severe test of the reliability of the IQ score, as most of the residents come from broken homes and are frequently under stress, particularly when they are tested shortly after admission. METHODThe records of all students now or recently at Johnstone were searched. Each of the Wechsler Full Scale IQ scores of each student who was tested more than once, either on the same Wechsler Scale or on a different Wechsler Scale, was recorded.

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Section: Wisc-r/waissupporting

confidence: 91%

Intratest and Intertest Reliability and Stability of the Wisc, Wisc-R, and Wais Full Scale Iqs in a Mentally Retarded Population

Spitz¹

1983

J Spec Educ

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“…Previous research (Nagle & Lazarus 1979;Spitz 1988) has suggested that earlier versions of the WAIS produced higher scores than earlier versions of the WISC, in individuals who were functioning in the low IQ range. Nagle & Lazarus (1979) compared the WAIS with the WISC-R in a group of 30 participants who received special education classes for children with an IQ between 55 and 75. The WAIS yielded significantly higher IQ scores, scoring 13 points higher on the Full Scale IQ than the WISC-R.…”

Section: Introductionmentioning

confidence: 97%

“…Nagle & Lazarus (1979) compared the WAIS with the WISC‐R in a group of 30 participants who received special education classes for children with an IQ between 55 and 75. The WAIS yielded significantly higher IQ scores, scoring 13 points higher on the Full Scale IQ than the WISC‐R.…”

Section: Introductionmentioning

confidence: 99%

“…Although these tests have been found to be highly reliable and valid when used with individuals functioning within the normal range of intelligence (Wechsler 1997(Wechsler , 2003 there have been some concerns about how accurately these tests measure intellectual functioning at the extreme ends of the range (Whitaker 2008;Whitaker & Wood 2008). Previous research (Nagle & Lazarus 1979;Spitz 1988) has suggested that earlier versions of the WAIS produced higher scores than earlier versions of the WISC, in individuals who were functioning in the low IQ range. Nagle & Lazarus (1979) compared the WAIS with the WISC-R in a group of 30 participants who received special education classes for children with an IQ between 55 and 75.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the WAIS‐III and WISC‐IV in 16‐Year‐Old Special Education Students

Gordon¹,

Duff

Davidson

et al. 2010

Research Intellect Disabil

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Background Previous research with earlier versions of the WISC and WAIS has demonstrated that when administered to people who have intellectual disabilities, the WAIS produced higher IQ scores than the WISC. The aim of this study was to examine whether these differences still exist. A comparison of the Wechsler Adult Intelligence Scale – Third Edition (WAIS‐III) with the Wechsler Intelligence Scale for Children – Fourth Edition (WISC‐IV) was conducted with individuals who were 16 years old and receiving special education. Materials and Methods All participants completed the WAIS‐III (UK) and WISC‐IV (UK). The order of administration was counterbalanced; the mean Full Scale IQ and Index scores on the WAIS‐III and WISC‐IV were compared. Results The WAIS‐III mean Full Scale IQ was 11.82 points higher than the mean Full Scale IQ score on the WISC‐IV. Significant differences were also found between the Verbal Comprehension Index, Perceptual Reasoning/Organization Index and Processing Speed Index on the WAIS‐III and WISC‐IV, all with the WAIS‐III scoring higher. Conclusions The findings suggest that the WAIS‐III produces higher scores than the WISC‐IV in people with intellectual disabilities. This has implications for definitions of intellectual disability and suggests that Psychologists should be cautious when interpreting and reporting IQ scores on the WAIS‐III and WISC‐IV.

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“…The several Wechsler scales are the most widely used tools for making decisions in the schools about intellectual functioning (Bersoff, 1981; Goldstein, Arkell, Ashcroft, Hurley, & Lilly, 1975;Nagle & Lazarus, 1979). In addition to their good validity, high reliabilities, and excellent standardization, the Wechsler tests cover a wide age range from 7 to 74 years, with some overlap in ages between the different scales.…”

mentioning

confidence: 99%

Similarity of WISC-R and WAIS-R scores at age 16

1988

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Thirty learning disabled students of average intellectual ability between 16 and 17 years of age were given both the WISC-R and the WAISR to determine if the WAIS-R provided higher average IQ scores, as had been reported for educationally mentally retarded adolescents. The results indicated: (a) no significant differences between the two scales on either the Verbal, Performance, or Full Scale IQs, (b) significant correlations between the WISC-R and WAIS-R on the three IQ scores and 9 of the 11 subtests, and (c) the emergence of the ACID profile for learning disabled adolescents on both tests.

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II. The comparability of the WISC-R and WAIS among 16-year-old EMR children

Cited by 12 publications

References 10 publications

Intratest and Intertest Reliability and Stability of the Wisc, Wisc-R, and Wais Full Scale Iqs in a Mentally Retarded Population

Intratest and Intertest Reliability and Stability of the Wisc, Wisc-R, and Wais Full Scale Iqs in a Mentally Retarded Population

Comparison of the WAIS‐III and WISC‐IV in 16‐Year‐Old Special Education Students

Similarity of WISC-R and WAIS-R scores at age 16

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