Decision-making under uncertainty in obsessive-compulsive disorder.

Area of Science:

• Neuroscience
• Psychiatry
• Behavioral Economics

Background:

• Obsessive compulsive disorder (OCD) is linked to significant morbidity, with impaired decision-making and intolerance of uncertainty being key features.
• The underlying mechanisms of these cognitive deficits in OCD remain poorly understood.

Purpose of the Study:

• To investigate decision-making under uncertainty in unmedicated individuals with OCD compared to healthy controls.
• To examine valuation and value-based choice differences using a behavioral economic framework.

Main Methods:

• A validated choice task assessing decision-making characteristics under conditions of risk and ambiguity.
• Comparison of 20 unmedicated participants with OCD and 20 matched healthy controls.

Main Results:

• OCD participants showed no difference in valuing uncertain options with known probabilities (risk).
• Individuals with OCD were more likely to avoid uncertain options with imprecise probabilities (ambiguity).
• OCD participants exhibited less consistent choices and difficulty identifying preferable options, correlating with symptom severity.

Conclusions:

• Decision-making, particularly value-based choices under ambiguity, is impaired in OCD.
• Elevated intolerance of uncertainty in OCD is specific to situations with imprecise outcome probabilities.
• Future research on the neural valuation network may illuminate OCD pathophysiology and inform therapeutic interventions targeting decision-making deficits.