The definitions
- Malingering: intentional symptom production for external gain (Rogers' canon)
- Symptom validity tests (SVTs): evaluate whether reported symptoms are credible
- Performance validity tests (PVTs): evaluate whether test performance itself is genuine — e.g., forced-choice recognition below chance
- Not the same as: factitious disorder (internal gain) or genuine illness
The evidence base
A 2025 systematic review (PMC) estimates the prevalence of symptom exaggeration among North American IME examinees across observational studies. The forensic canon — Rogers, Larrabee, Boone — provides the test batteries and decision rules, including embedded vs standalone measures and base-rate awareness.
Common tests
Forced-choice PVTs (e.g., word-memory and recognition tests), embedded validity indices on standard batteries, and structured symptom interviews (e.g., SIRS-type instruments). Choice of tests follows the referral question and the assessed domain (cognitive, pain, psychiatric).
Defensible documentation
Report validity findings as evidence, not accusations: name the tests, the scores, the decision rule, and the alternative explanations considered. Flag effort or inconsistency in a neutral, clinical tone. Never base a diagnosis of malingering on a single indicator.
Why this matters for IME buyers
Validity challenges are the fastest way to destroy a report's credibility in cross-examination. Records completeness and cited evidence — MedRecords' core product — are the foundation: cherry-picked or missing records make any validity opinion attackable.
