Comparison of the WISC-R and PPVT for a group of mentally retarded students

Vance, Hubert Booney; Prichard, Karen K.; Wallbrown, Fred H.

doi:10.1002/1520-6807(197807)15:3<349::aid-pits2310150306>3.0.co;2-7

Psychol. Schs.

1978

DOI: 10.1002/1520-6807(197807)15:3<349::aid-pits2310150306>3.0.co;2-7

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Comparison of the WISC-R and PPVT for a group of mentally retarded students

Hubert Booney Vance

Karen K. Prichard

Fred H. Wallbrown

Abstract: This study compared the WISC-R and PPVT scorm for a grou of 65 students classified as mentally retarded, ranging in age from 7.5 to 14.5. $earson product momenta (r) and correlated t values were em loyed in the analysis of data. The evidence from the present study indicatefthat for this sample of mildly retarded children and youth, the PPVT I& score is si ificantly higher than the Full Scale I& from the WISC-R. The current fintifngs indicate that the same general pattern exists for the WISC-R and PPVT as for t… Show more

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Cited by 22 publications

(9 citation statements)

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“…The revision and restandardization of this instrument suggest that the PPVT-R, unlike the PPVT, may be more consistent with other comparably standardized tests that measure verbal comprehension. Despite the fact that the PPVT has correlated significantly with the WISC-R Verbal I& and Stanford-Binet (Concannon, 1975;Covin, 1976Covin, , 1977aCovin, , 1977bGroden, Branson, & Mann, 1976;Richmond & Long, 1977;Ritter, Duffey, & Fischman, 1974;Vance, Prichard, & Wallbrown, 1978) the mean PPVT often has been significantly different from the mean Stanford-Binet and Wechsler IQs (Covin, 1976;Gensemer, Walker, & Cadman, 1976;Hodapp & Hodapp, 1980;Vance et al, 1978). Only a few studies have examined the relationship between the PPVT-R and intelligence tests.…”

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Use of the WISC-R and PPVT-R with mentally retarded children

Naglieri

1982

J. Clin. Psychol.

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Explored the relationship between the Revised Peabody Picture Vocabulary test (PPVT‐R) and the Wechsler Intelligence Scale for Children‐Revised (WISC‐R) for a sample of 38 mentally retarded children between the ages of 5–5 to 12–7. The PPVT‐R correlated significantly with the WISC‐R Verbal (.58), Performance (.48) and Full Scale (.59) IQ scores. There was no significant difference between the mean PPVT‐R Standard Score Equivalent (59.9) and the mean WISC‐R Verbal (59.5), Performance (62.4), or Full Scale (57.7) IQ scores. Implications of these findings for the use of the PPVT‐R are discussed.

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confidence: 99%

Use of the WISC-R and PPVT-R with mentally retarded children

Naglieri

1982

J. Clin. Psychol.

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“…Previous studies have been conducted to determine the comparability of scores attained on the PPVT and the WISC-R. These studies have demonstrated consistently that the PPVT overestimates the intellectual abilities of EMR individuals by approximately 6 to 12 IQ points as measured by the WISC-R (Covin, 1976;Hodapp & Hodapp, 1980;Vance, Prichard, & Wallbrown, 1978). The PPVT has been revised recently (PPVT-R; Dunn, 1980) and will no doubt continue to be used with EMR individuals.…”

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Comparison of the PPVT-R and WISC-R with urban educable mentally retarded students

Prasse

Bracken

1981

Psychol. Schs.

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Comparisons of the revised PPVT (PPVT-R) and the WISC-R were made with 67 EMR students. Significant differences were found between the PPVT-R mean standard scores and Verbal, Performance, and Full Scale IQs. The PPVT-R did not correlate significantly with the WISC-R scales or subtests, suggesting the tests are measuring different abilities.The Peabody Picture Vocabulary Test (PPVT; Dunn, 1959) has been widely used by psychologists, speech and hearing specialists, and educators for over 20 years. The PPVT is a popular instrument because it is a brief, easily administered test that requires little or no vocalization from the individual being tested. These characteristics, as well as the wide range of ages for which the PPVT is applicable, have made the instrument extremely well suited for testing EMR students.Previous studies have been conducted to determine the comparability of scores attained on the PPVT and the WISC-R. These studies have demonstrated consistently that the PPVT overestimates the intellectual abilities of EMR individuals by approximately 6 to 12 IQ points as measured by the WISC-R (Covin, 1976; Hodapp & Hodapp, 1980;Vance, Prichard, & Wallbrown, 1978). The PPVT has been revised recently (PPVT-R; Dunn, 1980) and will no doubt continue to be used with EMR individuals. The focus of this study was to compare scores attained on the PPVT-R and the WISC-R for urban EMR children. METHOD SubjectsThe 67 students (32 females and 35 males) participating in this study included blacks, Hispanics, and whites all previously identified as Educable Mentally Retarded and enrolled in EMR programs in a large city school system located in the Midwest. The students ranged in age from 7-3 to 15-8, with a mean of 11.25 years.All of the black and white students were selected on a random basis from computer listings of students enrolled in EMR programs. Since the population of Hispanic EMR students was smaller than the black and white groups, participation of all Hispanic EMR children was solicited. The sample included in this study represents all students whose parents gave permission for their child's participation and who were placed in EMR programs as a result of their scores on the WISC-R. InstrumentsThe PPVT (Dunn, 1959) is a receptive vocabulary test appropriate for individuals between 21 months and 18 years of age. The test format requires that the examiner disRequests for reprints should be sent to David P. Prasse, School of Education, Dept. of Educational Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI 53201. assistance in data collection, and to the American Guidance Service for their assistance. 'The authors wish to extend their appreciation to Ms. Vicki Jernigan and Mr. Greg Brock for their 174

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“…In the main, past research has provided little consensus as to the underlying constructs of the PPVT with learning-problem children (Anderson & Flax, 1968; Shaw, Matthews, & Klove, 1966;Taylor, 1975). Furthermore, the majority of studies reviewed based conclusions upon less than 100 subjects (Covin, 1976;Gensemer et al, 1976; Kimbrell, 1960; Shaw et al, 1966; Vance, Prichard, & Wallbrown, 1978). These small numbers offered little variation in the populations, ages, and grade levels studied and, thus, little generalizability.…”

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confidence: 99%

Construct validity of the PPVT with neuropsychological, intellectual, and achievement measures

1988

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The present investigation examined the construct validity of the Peabody Picture Vocabulary Test (PPVT) with learning‐disabled children. The Wechsler Intelligence Scale for Children‐Revised (WISC‐R), the Wide Range Achievement Test, and the Halstead‐Reitan Neuropsychological Battery were administered to 934 learning‐disabled children. Seven factors were isolated on the basis of a principal‐components factor analysis and Varimax rotation. PPVT scores were found to load on a factor similar to what has been labeled verbal comprehension on the WISC‐R with little secondary loadings on any of the remaining six factors. Implications for practitioners and further research were discussed.

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Comparison of the WISC-R and PPVT for a group of mentally retarded students

Cited by 22 publications

References 4 publications

Use of the WISC-R and PPVT-R with mentally retarded children

Use of the WISC-R and PPVT-R with mentally retarded children

Comparison of the PPVT-R and WISC-R with urban educable mentally retarded students

Construct validity of the PPVT with neuropsychological, intellectual, and achievement measures

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