Conceptualizing impulsivity as a construct in relation to posttraumatic stress disorder symptom severity among women.

Abstract

Despite the established association between posttraumatic stress disorder (PTSD) and impulsivity, the literature is limited regarding impulsivity as a multifaceted construct. That is, the field's understanding of how PTSD symptoms may increase particular impulsive tendencies and behaviors is constrained by examining impulsivity solely as an umbrella term. The aim of the present study was to determine if there are differential associations between PTSD symptom severity and various components of impulsivity across multiple self-report measures. A sample of 215 undergraduate women (M age = 19.77 years, SD = 1.91, Range: 18-39 years) completed the PTSD Checklist for DSM-5 (PCL-5), Barratt Impulsiveness Scale (BIS-11), short version of the UPPS-P Impulsive Behavior Scale (SUPPS-P), and Delaying Gratification Inventory (DGI). Structural equation modeling was used to examine associations between PTSD symptoms and each measure's subscales. The findings included significant predictions from PTSD symptoms to the BIS-11 Attentional Impulsiveness subscale, β = .23, SE = .07, 95% CI [.09, .37]; DGI Physical Pleasures, β = -.24, SE = .07, 95% CI [-.38, -.11], and Achievement subscales, β = -.19, SE = .08, 95% CI [-.34, -.04]; and the SUPPS-P Positive Urgency, β = .22, SE = .08, 95% CI [.07, .37], and Negative Urgency subscales, β = .32, SE = .07, 95% CI [.19, .46]. These results have implications for precision medicine approaches that emphasize targeting these specific facets of impulsivity, with likely downstream effects on health risk behaviors for emerging adult women.