A Validity Measure for the Automated Neuropsychological Assessment Metrics

The Automated Neuropsychological Assessment Metrics (ANAM) is one of the most widely used and validated neuropsychological instruments for assessing cognition. The ANAM Test System includes a reporting tool, the ANAM Validity Indicator Report that generates scores for the embedded effort measure, the ANAM Performance Validity Index (APVI). The current study seeks to develop a proxy for the APVI, using raw subtest summary test scores. This would be useful for situations where the APVI score is unavailable (e.g., validity report not generated at the time of the assessment) or when the item level data needed to generate this score are inaccessible. ANAM scores from a large data set of 1,000,000+ observations were used for this retrospective analysis. Results of linear regression analysis suggest that the APVI can be reasonably estimated from the raw subtest summary test scores that are presented on the ANAM Performance Report. Clinically, this means that an important step in the interpretation process, checking the validity of test data, can still be performed even when the APVI is not available.