A COMPARISON OF THE PERFORMANCES OF REEVALUATED AND NEWLY REFERRED LEARNING-DISABLED STUDENTS AND NEWLY REFERRED NON - LEARNING-DISABLED STUDENTS ON THE WECHSLER INTELLIGENCE SCALES FOR CHILDREN - REVISED AND THE WOODCOCK-JOHNSON TESTS OF COGNITIVE ABILITY.

Persistent Link:
http://hdl.handle.net/10150/184152
Title:
A COMPARISON OF THE PERFORMANCES OF REEVALUATED AND NEWLY REFERRED LEARNING-DISABLED STUDENTS AND NEWLY REFERRED NON - LEARNING-DISABLED STUDENTS ON THE WECHSLER INTELLIGENCE SCALES FOR CHILDREN - REVISED AND THE WOODCOCK-JOHNSON TESTS OF COGNITIVE ABILITY.
Author:
CONROY, DAVID S.
Issue Date:
1987
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
There has been much controversy concerning the comparability of the Wechsler Intelligence Scales for Children-Revised (WISC-R) and the Woodcock-Johnson Tests of Cognitive Ability (WJTCA). Previous research has raised the issue of a mean score discrepancy between the tests when used with the learning disabled. This study analyzed and compared performances on these two tests by re-evaluated and newly referred LD students and newly referred non-LD students. In addition, subtypes of LD students were formed on the basis of achievement test scores. These students' test performances were also analyzed and compared. The results of this study were consistent with previous research. The Full Scale scores from the two tests were highly correlated in all three groups, but the WISC-R was significantly higher than the WJTCA for each group. Across the identified LD subtypes there was a significant difference between the Full Scale scores from the two tests. However, meaningful patterns of strengths and weaknesses across aspects of cognitive functioning were not uncovered. These results indicate that the WISC-R and WJTCA result in significantly different estimates of the cognitive ability of LD and referred students. This difference can be attributed to a combination of three possible explanations--the effects of the use of non-random samples, the use of different norm groups when the tests were standardized, and the tests contain different content.
Type:
text; Dissertation-Reproduction (electronic)
Keywords:
Wechsler Intelligence Scale for Children.; Woodcock-Johnson Tests of Cognitive Ability.; Learning disabled children.
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Educational Foundations and Administration; Graduate College
Degree Grantor:
University of Arizona
Advisor:
Sabers, Darrell
Committee Chair:
Sabers, Darrell

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleA COMPARISON OF THE PERFORMANCES OF REEVALUATED AND NEWLY REFERRED LEARNING-DISABLED STUDENTS AND NEWLY REFERRED NON - LEARNING-DISABLED STUDENTS ON THE WECHSLER INTELLIGENCE SCALES FOR CHILDREN - REVISED AND THE WOODCOCK-JOHNSON TESTS OF COGNITIVE ABILITY.en_US
dc.creatorCONROY, DAVID S.en_US
dc.contributor.authorCONROY, DAVID S.en_US
dc.date.issued1987en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThere has been much controversy concerning the comparability of the Wechsler Intelligence Scales for Children-Revised (WISC-R) and the Woodcock-Johnson Tests of Cognitive Ability (WJTCA). Previous research has raised the issue of a mean score discrepancy between the tests when used with the learning disabled. This study analyzed and compared performances on these two tests by re-evaluated and newly referred LD students and newly referred non-LD students. In addition, subtypes of LD students were formed on the basis of achievement test scores. These students' test performances were also analyzed and compared. The results of this study were consistent with previous research. The Full Scale scores from the two tests were highly correlated in all three groups, but the WISC-R was significantly higher than the WJTCA for each group. Across the identified LD subtypes there was a significant difference between the Full Scale scores from the two tests. However, meaningful patterns of strengths and weaknesses across aspects of cognitive functioning were not uncovered. These results indicate that the WISC-R and WJTCA result in significantly different estimates of the cognitive ability of LD and referred students. This difference can be attributed to a combination of three possible explanations--the effects of the use of non-random samples, the use of different norm groups when the tests were standardized, and the tests contain different content.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
dc.subjectWechsler Intelligence Scale for Children.en_US
dc.subjectWoodcock-Johnson Tests of Cognitive Ability.en_US
dc.subjectLearning disabled children.en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineEducational Foundations and Administrationen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.advisorSabers, Darrellen_US
dc.contributor.chairSabers, Darrellen_US
dc.contributor.committeememberBos, Candyen_US
dc.contributor.committeememberMishra, Shitalaen_US
dc.contributor.committeememberObrzut, Johnen_US
dc.contributor.committeememberVan Ruesen, Tonyen_US
dc.identifier.proquest8726812en_US
dc.identifier.oclc698733203en_US
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