Possible underlying mechanisms of thought-action fusion and related appraisal processes as a function of perseverative obsessive-compulsive-like reasoning

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2014
Demirsöz, Talat
The current study aims to simulate a thought-action fusion (TAF) experience observed in obsessive compulsive (OC) patients and its accompanying appraisal processes in students with low and high OC-symptomatology, and in OC patients. A novel paradigm, integrating TAF induction with perseverative reasoning was utilized. Participants were 131 university students, and 52 OC patients. Students were screened and assigned to the low and high OC symptomology group according to their Padua Inventory-Washington State University Revision (PI-WSUR) scores. Firstly, participants read the vignette. Next, they were trained for perseverative reasoning which was followed by a task in which they were asked to link two OC-like feared situations perseveratively in a cause-and-effect relation. Later, for the psychoeducation (PE) manipulation, while half of the participants read psychoeducational information about TAF, while the other half read the psychoeducational information about stress, which was the control condition. Appraisal ratings such as credibility, uncertainty, responsibility, regret, guilt, distress, the urge for suppression and lastly likelihood and morality components of TAF for the causal link between situations were assessed before and after perseverative reasoning, and after the psychoeducation. In general, scores for the high OC and OCD-patient groups were higher than that of the low OC group. The effect of PE was observed in a group of dependent variables but not others, which is discussed in detail. Results and their clinical implications are discussed related to the current literature.

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Citation Formats
T. Demirsöz, “Possible underlying mechanisms of thought-action fusion and related appraisal processes as a function of perseverative obsessive-compulsive-like reasoning,” Ph.D. - Doctoral Program, Middle East Technical University, 2014.