title: WAIS-R short forms: assessing the statistical significance of subtest differences.
abstract: 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.
  
  
  
  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.
  
  
  
  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.
  
  
  
  Tables for examining whether there are significant subtest differences in a clients WAIS-R profile are presented.
  
  
  
  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.
authors.affiliation: Department of Psychology, King's College, University of Aberdeen, UK.
authors.forename: J R
authors.initials: JR
authors.lastname: Crawford
mesh_terms: D006801:Humans; D011594:Psychometrics; D015203:Reproducibility of Results; D014888:Wechsler Scales