MAHALWR.EXE
A program that calculates the Mahalanobis Distance Index of the abnormality of an individual's subtest scatter on the WAIS-R. The method was developed by Burgess (1991). The current version can only be used with a full-length WAIS-R; I may get round to modifying it for use with short-forms. To download click here.
For essential background details on the psychometric methods implemented in the program see the following papers:
Burgess, A. (1991). Profile analysis of the Wechsler Intelligence Scales: a new index of subtest scatter. British Journal of Clinical Psychology, 30, 257-263. |
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Crawford, J. R. & Allan, K. M. (1994). The Mahalanobis distance index of WAIS-R subtest scatter: psychometric properties in a healthy UK sample. British Journal of Clinical Psychology, 33, 65-69. |
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Once downloaded, the programs can be run by any of the normal Windows procedures i.e. by clicking on file in File Manager or by placing on desktop etc.
If there are any problems please e-mail me at j.crawford@abdn.ac.uk
Further contact details can be found on my home page
To view details of further computer programs for research and practice in neuropsychology / clinical psychology click here