The Assessment of Premorbid Ability: A Critical Review
- 1 January 1995
- journal article
- research article
- Published by Taylor & Francis in Neurocase
- Vol. 1 (1) , 83-89
- https://doi.org/10.1093/neucas/1.1.83
Abstract
Estimating premorbid intelligence level has become an established and central component of neuropsychological research and practice. Three main approaches are currently employed, estimate based on demographic variables, reading ability, or lexical decision-making. Each have relative strengths and weaknesses. Demographic-based regression equations have the advantage that the estimate is completely independent of the subject's current cognitive state, but such approaches only predict ∼50% of the variance in measured intelligence. Also, in neurodevelopmental conditions, maximum educational and occupational attainment may be compromised by the disease process. For use in the individual case, the margin of error may also be unacceptably large. Estimates based on oral pronunciation of irregular words, typified by the National Adult Reading Test (NART), have become the most popular method. Pronunciation accuracy correlates highly with measured intelligence, and is relatively resistant to the effects of ...This publication has 0 references indexed in Scilit: