Executive functioning in body dysmorphic disorder and obsessive-compulsive disorder.

Area of Science:

• Neuroscience
• Psychiatry
• Cognitive Psychology

Background:

• Body dysmorphic disorder (BDD) and obsessive-compulsive disorder (OCD) are distinct psychiatric conditions.
• Executive functions (EFs) are crucial for cognitive control and goal-directed behavior.
• Previous research on EFs in BDD and OCD has yielded mixed results.

Purpose of the Study:

• To compare executive functions (EFs) in patients with BDD and OCD against healthy controls.
• To investigate the relationship between symptom severity and EFs in BDD and OCD.

Main Methods:

• Adults with BDD (n=26), OCD (n=29), and healthy controls (n=28) completed computerized neuropsychological tests.
• Tests included spatial working memory (SWM), intra-extra-dimensional set shifting (IED), and stop signal task (SST) from the CANTAB battery.
• Performance was compared between groups and correlated with symptom severity.

Main Results:

• No significant differences in SWM, IED, or SST performance were found between BDD, OCD, and control groups.
• A weak positive correlation between symptom severity and errors on SWM and IED was observed in both BDD and OCD groups.
• A negative correlation between symptom severity and SST performance was noted in the BDD group.

Conclusions:

• Patients with BDD or OCD demonstrate comparable performance on tested executive functions to healthy controls.
• Symptom severity in BDD and OCD is associated with performance on specific executive function tasks.
• Further research is needed to clarify potential differences in EFs between BDD and OCD.