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Background And Objectives: A growing body of research suggests that the repetition of an action degrades memory for that action, as well as confidence that is has been done correctly. This has important implications for understanding the compulsive repetition of actions characteristic of obsessive compulsive disorder (OCD). At this time, though, much of the research has been conducted on analogue or nonclinical OCD samples in comparison to healthy controls and often using virtual, as opposed to actual, threat stimuli. Furthermore, although it has been argued that people with OCD are overly attentive to threat stimuli, the research on actual attention to threat is scant.
Methods: People with a principal diagnosis of OCD (n = 30) and people with a clinically significant diagnosis of an anxiety disorder, but no OCD (n = 18) completed measures of memory confidence and responsibility and then underwent a stove-checking task in a functioning kitchen while wearing a portable eye tracking device. Pre- and post-task ratings of harm and responsibility were taken, along with post-task ratings of memory and certainty.
Results: People with OCD did not exhibit poorer memory confidence than the anxious control (AC) group, but did report greater trait and state responsibility for harm. The OCD group checked longer than did the AC group and check duration predicted post-task ratings of harm, but to the same extent in both groups. People with OCD attended to threat items less than did the AC group. Greater visual attention to the stove during the checking period was associated with greater post-task ratings of responsibility and harm and with less certainty in and memory for the check - but only for the AC group.
Limitations: The sample size was modest, women were over-represented and problems with the eye tracking device reduced the amount of reliable data available for analysis.
Conclusions: Compulsions are complex actions that are mediated by many trait, state and contextual factors. People with OCD may be able to circumvent self-perpetuating checking processes under certain circumstances. Future research should explore the factors that determine whether or not self-perpetuating mechanisms are activated.
Download full-text PDF |
Source |
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http://dx.doi.org/10.1016/j.jbtep.2016.03.005 | DOI Listing |
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