Think twice: Impulsivity and decision making in obsessive-compulsive disorder

Area of Science:

• Neuroscience
• Psychiatry
• Behavioral Science

Background:

• The traditional anxiety-avoidance model of obsessive-compulsive disorder (OCD) is being challenged.
• Emerging research links OCD to impulsivity, risky decision-making, and reward system dysfunction, characteristics shared with behavioral addictions.

Purpose of the Study:

• To investigate the validity of the behavioral addiction model for OCD.
• To assess impulsivity, decision-making, and probabilistic reasoning in OCD patients compared to healthy controls.

Main Methods:

• A sample of 38 OCD patients and 39 healthy controls were evaluated.
• Standardized assessments included the Barratt Impulsiveness Scale (BIS-11), Iowa Gambling Task (IGT), and Beads Task.

Main Results:

• OCD patients scored significantly higher on the BIS-11, particularly in cognitive aspects.
• OCD patients demonstrated impaired decision-making on the IGT, favoring immediate rewards and failing to learn from losses.
• Biased probabilistic reasoning was observed in OCD patients, indicated by fewer draws to decision on the Beads Task.

Conclusions:

• OCD patients exhibit greater impulsivity, riskier decision-making, and biased probabilistic reasoning than controls.
• These findings support exploring OCD through a behavioral addiction lens, potentially offering a more suitable framework than the anxiety-avoidance model.
• Further comparative studies between OCD and behavioral addiction patients are recommended to rigorously examine this model.