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01-12-2014 | Uitgave 4/2014

Journal of Psychopathology and Behavioral Assessment 4/2014

The Trauma Related Shame Inventory: Measuring Trauma-Related Shame Among Patients with PTSD

Tijdschrift:
Journal of Psychopathology and Behavioral Assessment > Uitgave 4/2014
Auteurs:
Tuva Øktedalen, Knut Arne Hagtvet, Asle Hoffart, Tomas Formo Langkaas, Mervin Smucker

Abstract

This article proposes a new measurement instrument of trauma-related shame. The purpose of this study is to investigate the psychometric properties of the scores derived from the Trauma Related Shame Inventory (TRSI) by means of generalizability theory (G-theory). The psychometric analyses are based on a sample of 50 patients in treatment for Post-traumatic Stress Disorder (PTSD). The results provided supporting construct validity evidence for the interpretation of TRSI as a homogeneous construct. The 24-item version of internal and external referenced shame yielded generalizability and dependability coefficients of .874 and .868, respectively. The distinction between shame and guilt was supported by a high generalizability coefficient of .812 for the difference scores between TRSI and guilt cognition scale. Further validity evidence was provided by a positive relationship between TRSI and a) self-judgment subscale in Self-Compassion Scale (SCS; Neff Self and Identity 2:(3), 223–250, 2003) and b) Beck Depression Inventory (Beck Steer and Brown 1996a) when controlled for guilt. The results of the present study provided promising support for using the 24-item version of TRSI in both clinical research and practice.

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