Subscribe to thousands of academic journals for just $40/month
Read and share the articles you need for your research, all in one place.

Adjustment of Cognitive Scores with a Co-Normed Estimate of Premorbid Intelligence: Implementation Using Mindstreams Computerized Testing

Applied Neuropsychology , Volume 15 (4): 250-263 – Oct 1, 2008

Details

Publisher
Psychology Press
Copyright
© 2008 Informa plc
Subject
cognitive function
ISSN
0908-4282
D.O.I.
10.1080/09084280802325074
Publisher site
See Article on Publisher Site

Preview Only

Expand Tray Hide Tray

Adjustment of Cognitive Scores with a Co-Normed Estimate of Premorbid Intelligence: Implementation Using Mindstreams Computerized Testing

Abstract

Neuropsychological assessment is critically dependent upon comparison to a standard normative database. While generally appropriate for individuals of near-average intelligence, high-intelligence individuals may be erroneously scored as unimpaired and low-intelligence individuals as impaired on cognitive measures. The current paper describes an approach for minimizing such misclassifications that is standardized and practical for clinical use. A computerized test of nonverbal reasoning co-normed with cognitive measures is used for automatic adjustment of normalized cognitive scores. This premorbid estimate showed good construct validity, and adjustment raised cognitive scores for low-intelligence individuals, and lowered cognitive scores for high-intelligence individuals similarly across demographic (age, education, computer experience) and clinical (cognitively healthy, mild cognitive impairment, dementia) subgroups. Adjustment was typically up to three normalized units for scores on the premorbid estimate of ±1 SD and 6 normalized units for scores of ±2 SD. The present approach shows promise as a practical solution for assessment of high- and low-intelligence individuals.
Loading next page...

Preview Only. This article cannot be rented because we do not currently have permission from the publisher.

 
/lp/informa-healthcare/adjustment-of-cognitive-scores-with-a-co-normed-estimate-of-premorbid-YESwKjeDkY