Development and Validation of the Disclosure Expectancy Scale

Abstract

Although the disclosure of traumatic experiences is believed to influence trajectories of post-trauma recovery, less is known about individual differences that affect survivors’ motivation to share. The current project describes the development and evaluation of the Disclosure Expectancy Scale (DExS), a novel instrument intended to assess survivors’ expectations about the potential risks and benefits of disclosure. Items targeting both positive and negative expectancies were generated based on existing research and the authors’ clinical experience with various survivor populations. Preliminary analyses in trauma-exposed undergraduates (N = 359) offer support for hypothesized positive and negative expectancy dimensions with evidence for the convergent and discriminant validity of scores. Subsequent evaluation in active-duty, help-seeking military personnel (N = 35) provides further evidence of validity based on correlations with relevant clinical measures. A final regression demonstrating unique effects of initial disclosure expectancies on post-traumatic stress disorder (PTSD) severity following trauma-focused treatment highlights the predictive validity of DExS scores.

Keywords

trauma disclosure PTSD treatment scale development psychometrics

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