WAIS vs WAIS-R in matched U.K. samples

J. R. Crawford*, F. M. Morrison, A. M. Jack, R. H.B. Cochrane, K. M. Allen, J. A.O. Besson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A matched samples design was employed to compare the British versions of the WAIS (Wechsler, 1955; Saville, 1971) and WAIS-R (Wechsler, 1981; Lea, 1986) in terms of test difficulty. The WAIS yielded significantly higher IQs than the WAIS-R. The mean difference for Full Scale IQ was 8.2 IQ points, i.e. over half a standard deviation. Encouragingly for U.K. users of the Wechsler Scales, additional analysis suggested that the performance of the WAIS-R sample was consistent with an estimated U.K. population mean ∼ 100.

Original languageEnglish
Pages (from-to)427-428
Number of pages2
JournalPersonality and Individual Differences
Issue number4
Publication statusPublished - 1990


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