Performance Validity Test (PVT)
Definition
Any test designed to detect inadequate effort or deliberate underperformance in cognitive assessment; TOMM is the leading example for memory; embedded PVTs derive validity indices from standard neuropsychological measures.
- Primary purpose
- Detect inadequate effort or deliberate underperformance in cognitive assessment
- Leading example
- Test of Memory Malingering (TOMM)
- Professional requirement
- Mandatory in forensic neuropsychological evaluations per NAN and AACN guidance
Common questions
What is a performance validity test and why is it used?+
A performance validity test detects when someone is not trying hard enough or intentionally underperforming during cognitive assessment. In forensic neuropsychological evaluations, PVTs are mandatory because they help examiners distinguish real cognitive deficits from deliberate malingering or symptom exaggeration.
What's an example of a performance validity test?+
The Test of Memory Malingering (TOMM) is the leading example for memory. Beyond dedicated tests, examiners also embed validity indices within standard neuropsychological measures to detect effort problems while assessing cognition.
When are performance validity tests required?+
PVTs are mandatory in forensic neuropsychological evaluations per professional guidance from the National Academy of Neuropsychology (NAN) and American Academy of Clinical Neuropsychology (AACN). They are essential wherever cognitive claims have legal or high-stakes consequences.
Related terms
- Atkins V. Virginia
- US Supreme Court 2002 decision holding that executing intellectually disabled defendants violates the Eighth Amendment; requires DSM-standard intellectual disability determination including Flynn-corrected...
- Below-Chance Performance
- Performance on a two-alternative forced-choice task below the 50% chance level; statistically impossible through genuine impairment; meets SSI Criteria Group A for...
- BNSS § 367
- Provision of India's Bharatiya Nagarik Suraksha Sanhita 2023 governing court procedure when an accused person appears to be of unsound mind; cognitive...
- Dual-Deficit Requirement
- DSM-5 requirement for intellectual disability diagnosis: deficits in both measured intellectual functioning and adaptive behaviour, both present before age 18.
- Factitious Disorder
- Intentional production of symptoms motivated by psychological need to assume the sick role, without external incentive; distinct from malingering in motivation; not...
- Flynn Effect
- Documented approximately 3-point-per-decade rise in population mean IQ scores; requires correction when IQ scores obtained with older norms are used in legal...
- FSIQ
- Full-Scale IQ; derived from 10 core WAIS-IV subtests; primary score used in intellectual disability determinations and Atkins proceedings.
- Hall V. Florida
- US Supreme Court 2014 decision requiring courts to account for IQ measurement error and the Flynn effect before enforcing rigid IQ cutoffs...
- M-FAST
- Miller Forensic Assessment of Symptoms Test; 25-item brief screen for feigned psychopathology; designed for jail and pretrial settings where full SIRS-2 is...
- MacCAT-CA
- MacArthur Competence Assessment Tool for Criminal Adjudication; a 22-item standardised instrument measuring Understanding, Reasoning, and Appreciation of the trial process, grounded in...
- MAL (Malingering Index)
- PAI configuration-based supplementary index developed for forensic populations to detect feigned psychopathology; used alongside NIM and clinical scales.
- Malingering
- Intentional production of false or grossly exaggerated symptoms motivated by external incentives; a DSM-5 V-code (not a mental disorder) applicable when incentive...
Explained in these topics
- Intelligence and Cognitive Assessment in Forensic ContextTest designed to detect inadequate effort or deliberate underperformance in cognitive assessment; mandatory in forensic neuropsychological evaluations per NAN...
- Malingering and Response-Style DetectionAny test designed to detect inadequate effort or deliberate underperformance in cognitive assessment; TOMM is the leading example for memory; embedded PVTs der...