WAIS-R short forms: Assessing the statistical significance of subtest differences

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Objectives. To assist with analysis, in the individual case, of subtest profiles obtained from WAIS-R short-form administrations. Secondly, to offer a method of profile analysis for a full-length WAIS-R which is appropriate for use with age-graded scaled scores.

Design. The study used a psychometric method for profile analysis (Silverstein, 1982a) which deals more effectively than alternative approaches with the problems raised by conducting multiple comparisons.

Methods. A formula to compute the standard error of the difference between a subtest and mean subtest scores was applied to nine short forms and the full-length WAIS-R. The data used were derived from the WAIS-R standardization sample.

Results. Tables for examining whether there are significant subtest differences in a clients WAIS-R profile are presented.

Conclusions. An elegant method of analysing subtest profiles has been extended to permit its use with WAIS-R short forms. Guidance on the use of the tables is offered; the distinction between reliable and abnormal differences is highlighted.

Original languageEnglish
Pages (from-to)601-608
Number of pages8
JournalBritish Journal of Clinical Psychology
Volume36
Publication statusPublished - Nov 1997

Keywords

  • PATTERN-ANALYSIS
  • UK SAMPLE
  • VALIDITY
  • HEALTHY

Cite this

@article{cff5716ddc6d460783577f9e65d0bd34,
title = "WAIS-R short forms: Assessing the statistical significance of subtest differences",
abstract = "Objectives. To assist with analysis, in the individual case, of subtest profiles obtained from WAIS-R short-form administrations. Secondly, to offer a method of profile analysis for a full-length WAIS-R which is appropriate for use with age-graded scaled scores.Design. The study used a psychometric method for profile analysis (Silverstein, 1982a) which deals more effectively than alternative approaches with the problems raised by conducting multiple comparisons.Methods. A formula to compute the standard error of the difference between a subtest and mean subtest scores was applied to nine short forms and the full-length WAIS-R. The data used were derived from the WAIS-R standardization sample.Results. Tables for examining whether there are significant subtest differences in a clients WAIS-R profile are presented.Conclusions. An elegant method of analysing subtest profiles has been extended to permit its use with WAIS-R short forms. Guidance on the use of the tables is offered; the distinction between reliable and abnormal differences is highlighted.",
keywords = "PATTERN-ANALYSIS, UK SAMPLE, VALIDITY, HEALTHY",
author = "Crawford, {John Robertson}",
year = "1997",
month = "11",
language = "English",
volume = "36",
pages = "601--608",
journal = "British Journal of Clinical Psychology",
issn = "0144-6657",
publisher = "Wiley-Blackwell",

}

TY - JOUR

T1 - WAIS-R short forms: Assessing the statistical significance of subtest differences

AU - Crawford, John Robertson

PY - 1997/11

Y1 - 1997/11

N2 - Objectives. To assist with analysis, in the individual case, of subtest profiles obtained from WAIS-R short-form administrations. Secondly, to offer a method of profile analysis for a full-length WAIS-R which is appropriate for use with age-graded scaled scores.Design. The study used a psychometric method for profile analysis (Silverstein, 1982a) which deals more effectively than alternative approaches with the problems raised by conducting multiple comparisons.Methods. A formula to compute the standard error of the difference between a subtest and mean subtest scores was applied to nine short forms and the full-length WAIS-R. The data used were derived from the WAIS-R standardization sample.Results. Tables for examining whether there are significant subtest differences in a clients WAIS-R profile are presented.Conclusions. An elegant method of analysing subtest profiles has been extended to permit its use with WAIS-R short forms. Guidance on the use of the tables is offered; the distinction between reliable and abnormal differences is highlighted.

AB - Objectives. To assist with analysis, in the individual case, of subtest profiles obtained from WAIS-R short-form administrations. Secondly, to offer a method of profile analysis for a full-length WAIS-R which is appropriate for use with age-graded scaled scores.Design. The study used a psychometric method for profile analysis (Silverstein, 1982a) which deals more effectively than alternative approaches with the problems raised by conducting multiple comparisons.Methods. A formula to compute the standard error of the difference between a subtest and mean subtest scores was applied to nine short forms and the full-length WAIS-R. The data used were derived from the WAIS-R standardization sample.Results. Tables for examining whether there are significant subtest differences in a clients WAIS-R profile are presented.Conclusions. An elegant method of analysing subtest profiles has been extended to permit its use with WAIS-R short forms. Guidance on the use of the tables is offered; the distinction between reliable and abnormal differences is highlighted.

KW - PATTERN-ANALYSIS

KW - UK SAMPLE

KW - VALIDITY

KW - HEALTHY

M3 - Article

VL - 36

SP - 601

EP - 608

JO - British Journal of Clinical Psychology

JF - British Journal of Clinical Psychology

SN - 0144-6657

ER -