Excessive checking for non-anxiogenic stimuli in obsessive-compulsive disorder.

Area of Science:

• Psychiatry
• Cognitive Neuroscience
• Behavioral Science

Background:

• Repetitive checking in obsessive-compulsive disorder (OCD) is hypothesized to alleviate anxiety or compensate for memory deficits.
• Existing experimental literature on the functions of checking behavior in OCD remains inconsistent.

Purpose of the Study:

• To investigate the influence of obsession-related anxiety on repetitive checking behaviors in individuals with OCD.
• To determine the role of memory deficits in driving repetitive checking in OCD.

Main Methods:

• A delayed-matching-to-sample task was administered to 23 OCD checkers, 17 OCD non-checkers, and 41 controls.
• The task included obsession-related stimuli to assess anxiety's influence and a no-checking version to evaluate memory.
• Participants had an unrestricted option to perform repetitive checking during the task.

Main Results:

• OCD checkers exhibited significantly more checking behavior compared to other groups, even with non-anxiogenic stimuli.
• Memory performance was comparable across all groups, indicating memory deficits do not drive checking.
• The level of anxiety associated with stimuli did not significantly impact the frequency of checking behaviors.

Conclusions:

• Increased checking in OCD checkers is independent of memory abilities and primary obsession-related anxiety.
• Repetitive checking in OCD may represent an automated behavior rather than a conscious coping strategy.
• Findings suggest a need to re-evaluate the underlying mechanisms of checking behaviors in obsessive-compulsive disorder.