신체화 집단의 인지 편향 및 주의력과 기억력 저하 = Cognitive Biases, Decreased Attention and Memory in Somatization Groups

다국어 초록 (Multilingual Abstract)

Cognitive processes of somatization group are considered to be relevant to the development and maintenance of somatization symptoms. The aim of this study was to confirm cognitive biases and as well as decreased attention and memory in somatization groups. A modified Stroop task, a delayed free recall task, and a recognition task using computer-presented word lists were performed to 17 college students with somatization tendencies and 17 normal college students. The results showed that the somatization groups had the significant Stroop interference effects for somatic-symptoms words. This result suggested that the somatization group have attentional biases for the somatic-symptoms words. Also, the somatization group showed significantly lower response bias index for somatic-symptom words than the normal group. However, the number of words correctly recalled, free-recall ratio, hit rate, stimulus sensitivity index of somatic-symptom words were not more or higher than those of positive words or neutral words, and the response bias index of somatic-symptom words was not lower than that of positive words or neutral words in the somatization group. Therefore, the hypothesis that the somatization group would have memory biases for the somatic-symptoms words was partially supported. In addition, the somatization groups had the decreased attention and memory. Finally, the significance and limitations of this study and the directions for future study were also discussed.

국문 초록 (Abstract)

신체화 집단의 인지 과정이 신체화 증상의 발생과 유지에 관련되어 있다고 알려져 있다. 본 연구의 목적은 신체화 집단의 인지 편향 및 주의력과 기억력 저하를 확인하는 것이다. 단어 목록이 컴퓨터로 제시된 수정된 Stroop 과제, 지연된 자유 회상 과제 및 재인 과제가 17명의 신체화 경향을 지닌 대학생 집단과 17명의 비신체화 대학생 집단에게 실시되었다. 본 연구 결과에 따르면, 신체화 집단은 신체증상 단어에 대하여 유의한 Stroop 간섭 효과가 있는 것으로 나타났다. 이러한 결과는 신체화 집단이 신체증상 단어에 대하여 주의 편향을 지니고 있음을 시사하였다. 또한 신체화 집단은 비신체화 집단에 비하여 신체증상 단어에 대한 반응 편향 지수가 유의하게 더 낮은 것으로 나타나는데, 이는 신체화 집단이 기억 편향을 어느 정도 지니고 있음을 의미한다. 그렇지만 신체화 집단에서는 중성 단어나 긍정 단어보다 신체증상 단어에 대한 회상단어수, 단어회상률, 정확률, 자극 민감성 지수가 유의하게 더 많거나 높지 않았고, 반응 편향 지수가 유의하게 더 낮지 않았다. 따라서 신체화 집단의 기억 편향에 대한 가설은 부분적으로 지지되었다. 아울러 신체화 집단은 주의력과 기억력 저하를 나타냈다. 마지막으로, 본 연구의 의의 및 제한점과 향후 연구 방향이 논의되었다.

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