WAIS-IV Supplementary Analysis

Program: WAIS4_Supplementary_Analysis.exe

This computer program for PCs accompanies the paper: Crawford, J. R., Garthwaite, P. H., & Longman, R. S, & Batty, A. M. (2012). Some supplementary methods for the analysis of WAIS-IV Index scores in neuropsychological assessment. Journal of Neuropsychology, 6, 192-211.

The program is for use with WAIS-IV Index scores and performs the following supplementary analyses of these scores: (a) provision of traditional confidence intervals on index scores, (b) expressing the endpoints of confidence intervals as percentile ranks; (c) quantifying the number of abnormally low index scores exhibited by a case and accompanying this with an estimate of the percentage of the normative population expected to exhibit at least this number of low scores; (d) quantifying the reliability and abnormality of index score deviations from an individual’s index score mean (thereby offering an alternative to the pairwise approach to index score comparisons available in the WAIS‑IV manual); (e) providing confidence intervals on an individual’s deviation scores or pairwise difference scores, (f) estimating the percentage of the normative population expected to exhibit at least as many abnormal deviations or abnormal pairwise differences as a case; and (g) calculating a case’s Mahalanobis Distance Index (MDI), thereby providing a multivariate estimate of the overall abnormality of an Index score profile. The methods can be applied when only a subset of the Index scores have been administered.

To download the program WAIS4_Supplementary_Analysis.exe click here and save to disk (once downloaded click on the program icon to run).

Alternatively, to download the file as a zip file click here (once downloaded unzip the file).

Your web browser is most probably configured to recognise that the file is an executable. If you have any problems (i.e. the browser treats them as text files), hold down the shift key when clicking. If your network does not allow downloads of executables then downloading the zip file is a solution.

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The author of this software (John R Crawford) and the University of Aberdeen make no representations about the suitability of the software or about any content or information made accessible by the software, for any purpose.

The software is provided 'as is' without express or implied warranties, including warranties of merchantability and fitness for a particular purpose or noninfringement.

The software is provided gratuitously and, accordingly, the author shall not be liable under any theory or any damages suffered by you or any user of the software.

If there are any problems please e-mail me at j.crawford@abdn.ac.uk. Further contact details are available in the footer of this page.