Interpersonal hostility and suspicious thinking in obsessive-compulsive disorder.

Individuals with obsessive-compulsive disorder (OCD) may struggle with hostility and suspicious thinking, but this has not been the subject of much research. The purpose of this study is to examine the relationship between hostility, suspicious thinking, and OCD severity. Participants included 66 outpatients in treatment for OCD, 27 in treatment for other disorders, and 68 students (n=161). All completed the Inventory of Hostility and Suspicious Thinking (IHS), a measure of psychotic thinking/paranoia, the Obsessive Compulsive Inventory-Revised (OCI-R), the Beck Depression Inventory (BDI-II), and the Beck Anxiety Inventory (BAI). As expected, the IHS was significantly positively correlated with the BAI and BDI-II. Additionally, regression analyses revealed that individuals with OCD have higher levels of hostility than students. Hostility was also significantly positively associated with increased OCD severity. Hostility and suspicious thoughts are prominent in anxiety disorders in general, and thus necessitate continued research.