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Investigating the National Adult Reading Test (NART-2) and Wechsler Test of Adult Reading Test (WTAR) in predicting Wechsler Abbreviated Scale of Intelligence Second edition (WASI-II) scores in an Australian sample

Citation

Thomas, MD and McGrath, A and Sugden, N and Weekes, C and Skilbeck, CE, Investigating the National Adult Reading Test (NART-2) and Wechsler Test of Adult Reading Test (WTAR) in predicting Wechsler Abbreviated Scale of Intelligence - Second edition (WASI-II) scores in an Australian sample, Australian Psychologist, 56, (5) pp. 372-381. ISSN 0005-0067 (2021) [Refereed Article]

Copyright Statement

Copyright 2021 Australian Psychological Society

DOI: doi:10.1080/00050067.2021.1937923

Abstract

Objective: The NART-2 and WTAR are used to estimate premorbid intellectual functioning. There are concerns about their accuracy. Our aim was to develop models predicting WASI-II scores from the NART-2 and WTAR variables and evaluate their accuracy within an Australian sample.

Method: The sample included 145 adults aged 18.91 to 70.64 years (M = 34.70, SD = 13.30), of which 78 were female. Analyses examined the reliability of the word reading tasks and estimated WASI-II sores with multiple linear regression. Comparison of estimated scores were made with actual WASI-II scores.

Results: WASI-II scores were moderately related to word reading tasks (r = .33 to.51, p < .01) and weakly related to age, years of education, and occupation. Models were identified for the four WASI-II index scores (with R2 = .20 to .36) and their accuracy checked. 24%-48%, 61%-73% and 80%-88% were correctly estimated within five, 10 and 15 points, respectively.

Conclusions: Models for predicting WASI-II scores from the NART-2 and WTAR and demographic variables had adequate strength and accuracy. However, they were likely to be limited to those with FSIQ>79. Further development of word reading tasks for the prediction of premorbid intellectual functioning in the contemporary Australian context is warranted.

Item Details

Item Type:Refereed Article
Keywords:cognitive assessment, National Adult Reading Test (NART), premorbid intellectual functioning, psychometric evaluation, Wechsler Abbreviated Scale of Intelligence Second edition (WASI-II), Wechsler Test of Adult Reading Test (WTAR)
Research Division:Psychology
Research Group:Applied and developmental psychology
Research Field:Educational psychology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in psychology
UTAS Author:Skilbeck, CE (Associate Professor Clive Skilbeck)
ID Code:146559
Year Published:2021
Web of Science® Times Cited:1
Deposited By:Psychology
Deposited On:2021-09-13
Last Modified:2021-10-29
Downloads:0

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