Common rituals in obsessive-compulsive disorder and implications for treatment: A mixed-methods study

Area of Science:

• Psychiatry
• Clinical Psychology
• Behavioral Science

Background:

• Obsessive-compulsive disorder (OCD) involves rituals aimed at certainty and preventing feared outcomes.
• Exposure and response prevention is effective when rituals are resisted.
• Current self-report measures may not capture the full spectrum of OCD rituals, limiting understanding of their patterns and impact.

Purpose of the Study:

• To identify and validate treatment provider-identified OCD rituals.
• To determine how these rituals cluster together.
• To examine the influence of ritual clusters on OCD severity and treatment outcomes.

Main Methods:

• A mixed-methods approach was used with a retrospective sample of 641 adult patients undergoing intensive OCD treatment.
• Rituals were identified and validated using the Yale-Brown Obsessive-Compulsive Scale.
• Statistical analysis was employed to identify clustering patterns and their predictive value.

Main Results:

• Sixty-two rituals were categorized into eight higher-order clusters.
• Reassurance rituals at admission predicted greater intolerance of uncertainty (IU).
• Rumination rituals predicted less OCD severity at admission.
• The "just right" ritual cluster uniquely predicted worse IU at discharge and a longer treatment duration (average 7.0 days).

Conclusions:

• Clinical observation identifies more nuanced rituals than self-report alone.
• The "just right" ritual cluster is associated with poorer treatment outcomes and prolonged therapy.
• Treatment for OCD may need tailoring to address specific ritualistic patterns, such as those related to "just right" experiences, beyond general harm avoidance.