The Utility of the Trauma Symptom Inventory as a Primary and Secondary Assessment Instrument for Forensic Practice in Legal Settings

This paper examines the utility of the Trauma Symptom Inventory-2 (TSI-2) and its predecessor, the Trauma Symptom Inventory (TSI) in forensic psychology practice. The instrument’s psychometric properties, use with special populations, legal case review and admissibility considerations are discussed. Recommendations regarding the strengths and limitations of the TSI/TSI-2 are suggested for forensic practitioners and lawyers. Considerations related to potential expert witness cross-examination are also presented. Psychological research and legal review suggest that the TSI/TSI-2 is admissible as an instrument under the Daubert Standard, especially as related to civil court disability claims. Still, lingering issues with the ATR validity scale remain and there is limited independent research establishing the predictive and discriminant validity of the TSI-2 across diverse forensic samples. In summary, this suggests the instrument is most effective as part of a comprehensive assessment battery for identifying PTSD symptomology within legal proceedings where a trauma diagnosis is relevant.