The main focus of this study was to investigate links between the diathesis-stress hypotheses of the quadripartite model and the helplessness-hopelessness theory of depression. Simultaneously the study tested the psychometric properties of the Turkish version of the Learned Helplessness Scale (LHS). To this end, the LHS was initially administered…

In this study we examined the DSM-5 factor structure of scores on the Turkish version of the posttraumatic stress disorder (PTSD) Checklist for DSM-5 (PCL-5) and predictors of PTSD caseness in a sample of male prisoners. The 7-factor hybrid model was the optimal model relative to the alternatives. Consistent with the PTSD literature in prisoners,…

The study examined the psychometric properties of the Turkish version of the DASS-21. Thirty patients with major depression and 30 patients with anxiety disorders and 250 health controls participated in the study. We tested six alternative models using CFA. We found that tripartite model comprised of anhedonia and physiological hyperarousal along…

To date, many variables but particularly trait-like psychological constructs have been found to strongly contribute to procrastination but the complex relations among these variables collectively have received almost no attention. The purpose of the study was to provide a more profound understanding of the relations between procrastination,…