“…In addition, cognitive theories posit that negative appraisals of intrusive thoughts—based on maladaptive beliefs related to responsibility, overestimation of threat, and intolerance of ambiguity, among others—are fundamental to the development and maintenance of OCD symptoms (OCCWG, 1997, 2005; Rachman, 1976; Salkovskis, 1985). These beliefs demonstrate relative specificity to OCD and predict change in OCD symptoms over time (Abramowitz, Nelson, Rygwall, & Khandker, 2007; Altin & Gençöz, 2007; Coles & Horng, 2006; Tolin, Woods, & Abramowitz, 2003; Wu & Carter, 2008). In sum, research has identified distinct OCD symptom dimensions, which are linked through shared etiological mechanisms and symptom function.…”