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Performance Validity Testing in Neuropsychology: Scientific Basis and Clinical Application-A Brief Review.
Michael R Greher1, Thomas R Wodushek
1GREHER and WODUSHEK: Guest columnists, Departments of Neurosurgery and Neurology, School of Medicine, University of Colorado, Aurora, CO.
Performance validity testing ensures accurate neuropsychological test results by assessing patient effort. This method is crucial for reliable clinical and forensic evaluations, with its scientific basis expanding significantly.
Area of Science:
- Neuropsychology
- Psychometrics
Background:
- Performance validity testing (PVT) is essential for distinguishing true neurocognitive function from invalid results influenced by patient effort.
- PVT utilizes standalone tests or embedded indicators within traditional neuropsychological measures.
Purpose of the Study:
- To review the evolution of performance validity testing in neuropsychology.
- To discuss advancements in both the science and clinical application of PVT.
Main Methods:
- Review of the scientific literature and clinical practices in performance validity testing.
- Analysis of the development and application of PVT measures over the past 20-30 years.
Main Results:
- The scientific foundation for PVT has expanded considerably in recent decades.
- Most US neuropsychologists routinely employ PVT in clinical and forensic practice.
Conclusions:
- Performance validity testing is a critical component of modern neuropsychological evaluations.
- Continued research and development are vital for refining PVT methods and enhancing diagnostic accuracy.
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