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Memory function in patients with obsessive compulsive disorder and the problem of confidence in their memories: a
Filiz Karadag1, Nalan Oguzhanoglu, Osman Ozdel
1Psychiatry Department, Faculty of Medicine, Pamukkale University, Tip Fakültesi, Psikiyatri AD, 20010-Denizli, Turkey. filizlal@yahoo.com
Aim:
To examine obsessive-compulsive patients for memory of obsessive-compulsive relevant material and confidence in their memory.
Methods:
Memory function was examined by a recognition task using neutral and obsessive-compulsive relevant sentences in 32 patients with obsessive-compulsive disorder and 31 control subjects. We also investigated the participants' confidence in the accuracy of their recognition. The severity of obsessive-compulsive disorder was evaluated by using the Yale-Brown Obsessive Compulsive Scale. The Maudsley Obsessive Compulsive Questionnaire, the Hamilton Depression Rating Scale, and the State-Trait Anxiety Inventory were also administered to the two groups.
Results:
Whereas obsessive-compulsive disorder patients were not significantly different from control subjects on measures of recognition memory for both obsessive-compulsive relevant and neutral material, they were significantly less confident in the memory for obsessive-compulsive relevant and neutral sentences. Also, the State-Trait Anxiety Inventory (STAI) scores were negatively correlated with the recognition performance of obsessive-compulsive disorder relevant sentences and the levels of confidence in memory in the obsessive-compulsive disorder group. The obsessive-compulsive patients with checking compulsions were not different from non-checking obsessive-compulsive patients.
Conclusion:
Our results suggest that obsessive-compulsive patients experience difficulties in confidence in their memory, possibly related to anxiety rather than primary memory deficits.
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