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

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 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