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Related Experiment Video

Updated: Aug 21, 2025

Use of a Psychophysiological Script-driven Imagery Experiment to Study Trauma-related Dissociation in Borderline Personality Disorder

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Classification of performance validity and symptom validity using the Trauma Symptom Inventory-2.

Arlin K Pachet^1,2, Darnel N Malcolm¹, Irene Liu^1,3

¹Pachet Assessment and Rehabilitation, Calgary, Canada.

Applied Neuropsychology. Adult

|November 15, 2022

Summary

The Trauma Symptom Inventory-Second Edition (TSI-2) Atypical Response (ATR) scale shows limited ability to detect response bias in disability claimants. It should not be the sole measure of assessment validity.

Keywords:

Malingering Trauma Symptom Inventory-2 performance validity post-traumatic stress disorder response bias symptom validity

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Area of Science:

Psychology
Neuropsychology
Forensic Psychology

Background:

The Trauma Symptom Inventory-Second Edition (TSI-2) is increasingly used to assess trauma-related disorders.
Limited empirical validation exists for its validity scales in real-world clinical and forensic settings.

Purpose of the Study:

To evaluate the TSI-2 Atypical Response (ATR) scale's ability to discriminate response bias.
To assess its utility in identifying non-credible cognitive performance and symptom reporting in disability claimants.

Main Methods:

Retrospective chart review of 296 adults with trauma exposure or psychological injury claims.
Analysis of TSI-2 ATR scale discriminability using AUC-ROCs against established validity measures.

Main Results:

The TSI-2 ATR scale showed poor discriminability for overall assessment validity.
It had fair discriminatory ability for only one over-reporting scale (F-r) with an ROC area of .73.
Proposed cut-offs demonstrated significant sensitivity and specificity issues.

Conclusions:

The TSI-2 ATR scale has limited utility as a standalone indicator of assessment validity.
It should be used in conjunction with other performance and symptom validity tests.
Caution is advised when interpreting TSI-2 results, especially in forensic and clinical evaluations.