Introduction & Theoretical Background
Obsessive compulsive disorder (OCD) is experienced by between 1 and 2 people out of every 100 (Kessler et al, 2005) but it often goes unrecognized (Heyman et al, 2003).
Obsessions are repetitive and persistent thoughts (e.g., of contamination), images (e.g., of violent scenes), or impulses/urges (e.g., to stab someone) that are experienced as intrusive and unwanted. They are commonly associated with anxiety. The individual typically attempts to ignore these obsessions, suppress them, or neutralize them by performing compulsions.
Compulsions are repetitive behaviors, mental acts, or rituals that an individual feels driven to perform according to rigid rules in response to an obsession, or to achieve a sense of ‘completeness’. Examples of overt behaviors include repetitive washing, checking, and ordering of objects. Analogous mental acts include mentally repeating specific phrases to prevent negative outcomes, reviewing a memory to make sure that one has caused no harm, and mentally counting objects. Compulsions are either