To adequately understand Obsessive Compulsive Disorder (OCD), it is important to understand the developmental origins of obsessive beliefs and corresponding compulsive acts. Prior work has shown that having cold, neglectful parents in childhood and/or insecure attachment styles are both linked to emotional disturbances. In this study, we explored the potential contributions of early parent-child relationships to attachment styles and the severity of obsessive-compulsive beliefs in adulthood. A sample of 397 college students completed online, self-report measures of retrospective parent-child relationships, adult attachment styles, and ongoing obsessive-compulsive symptoms. Analyses revealed that attachment anxiety partially mediated the association between parent-child relationships and obsessive beliefs; attachment avoidance failed to operate as a mediating mechanism. Our findings provide support for interpersonal approaches to obsessive-compulsive symptoms and disorder, with implications for the continuity of relationship dysfunction from childhood into adulthood. (C) 2012 Elsevier Ltd. All rights reserved.