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Quo Vadis Forensic Neuropsychological Malingering Determinations? Reply to Drs. Bush, Faust, and Jewsbury

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Abstract

The thoughtful commentaries in this volume of Drs. Bush, Jewsbury, and Faust add to the impact of the two reviews in this volume of statistical and methodological issues in the forensic neuropsychological determination of malingering based on performance and symptom validity tests (PVTs and SVTs). In his commentary, Dr. Bush raises, among others, the important question of whether such malingering determinations can still be considered as meeting the legal Daubert standard which is the basis for neuropsychological expert testimony. Dr. Jewsbury focuses mostly on statistical issues and agrees with two key points of the statistical review: Positive likelihood chaining is not a mathematically tenable method to combine findings of multiple PVTs and SVTs, and the Simple Bayes method is not applicable to malingering determinations. Dr. Faust adds important narrative texture to the implications for forensic neuropsychological practice and points to a need for research into factors other than malingering that may explain PVT and SVT failures. These commentaries put into even sharper focus the serious questions raised in the reviews about the scientific basis of present practices in the forensic neuropsychological determination of malingering.

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  1. The Chicago School of Professional Psychology, Xavier University of Louisiana, New Orleans, USA

    Christoph Leonhard

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Leonhard, C. Quo Vadis Forensic Neuropsychological Malingering Determinations? Reply to Drs. Bush, Faust, and Jewsbury. Neuropsychol Rev 33, 653–657 (2023). https://doi.org/10.1007/s11065-023-09606-2

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