NARTVAL.EXE
The National Adult Reading Test (NART) is widely used to estimate premorbid ability in clinical neuropsychology. However, there is accumulating evidence that NART performance can be impaired in some neurological disorders. This program implements a multiple regression equation that can be used to predict an individual's NART performance from demographic variables (age, sex, years of education, and occupational code). The demographic estimate of NART performance is compared with the obtained score to evaluate the likelihood that the NART will provide a valid estimate of premorbid ability. The equation was built in a healthy UK sample (N= 659).
To download the computer program (NARTVAL.EXE) click here. For essential background information see the following paper:
Crawford, J. R., Allan, K. M., Cochrane, R. H. B. & Parker, D. M. (1990). Assessing the validity of NART estimated premorbid IQs in the individual case. British Journal of Clinical Psychology, 29, 435-436. |
Although primarily designed for use in clinical practice with individuals, the equation can also be used in research studies to evaluate whether NART performance "holds" in specific neuropsychiatric disorders. For an example of this use see the following paper:
O'Carroll, R. E., Moffoot, A., Ebmeier, K. P., & Goodwin, G. M. (1992). Estimating pre-morbid intellectual ability in the Alcoholic Korsakoff Syndrome. Psychological Medicine, 22, 903-909. |
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If there are any problems please e-mail me at j.crawford@abdn.ac.uk
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To view details of further computer programs for research and practice in neuropsychology / clinical psychology click here