Cognitive Bias Modification (CBM) and Obsessive Compulsive Beliefs

INTERVENTION: Internet‐based cognitive bias modification intervention with 4 sessions (1 x 20 minute session/day) of written scenarios delivered over 1 week. Each CBM session consists of delivery of 41 initially ambiguous scenarios that 100% of the time terminate with a positive resolution. Adherence to the daily CBM sessions will be automatically tracked by the computer program. Standardised email reminders will be sent to a participant if more than 2 days lapse between logins. Each of the 164 training scenarios is followed by a comprehension question to ascertain compliance with the training instructions. CONDITION: Obsessive compulsive disorder PRIMARY OUTCOME: Change in score on the Ambiguous Scenarios Test for OCD (AST‐OCD) Change in score on the OBQ‐TRIP Change in score on the OC Bias Measure SECONDARY OUTCOME: Change in score on the Dimensional Obsessive‐Compulsive Scale (DOCS) Change in score on the Kessler‐10 (K10) Psychological Distress Scale Change in score on the Patient Health Questionnaire (PHQ‐9) Change in score on the Word Sentence Association Test for OCD (WSAO) Treatment Expectancy and Outcomes Questionnaire INCLUSION CRITERIA: Meet Lifetime diagnostic criteria for Obsessive Compulsive Disorder (DSM‐IV and DSM 5 criteria will be assessed). Internet access; Australian resident; Fluent in written and spoken English.