The Relationship of Cost Bias and Irrational Belief to Social Anxiety

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  • 社会不安に対するコストバイアスと不合理な信念の関連
  • シャカイ フアン ニ タイスル コストバイアス ト フゴウリ ナ シンネン ノ カンレン

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Abstract

Social Anxiety Disorder (SAD) is known as the most common type of Anxiety Disorder. In recent studies, it was suggested the cost and probability bias is considered to be a maintaining factor of SAD symptoms. Especially, previous research revealed that the reduction of cost bias was highly related to the improvement of SAD symptoms. In SAD, previous studies also suggested that depressive symptoms often occur secondarily. It was also reported that depressed patients held irrational belief and it could lead to their negative mood. However, the difference of correlationship among cost bias, irrational belief, and SAD symptoms has not been understood in detail. In this study, the purpose was to examine the difference of correlationship among cost bias, irrational belief, and social anxiety. Undergraduate students (n=201) completed a set of questionnaires : the Social Cost/Probability scale (SCOP) ; the Short Fear of Negative Evaluation scale (SFNE) ; the Liebowitz Social Anxiety Scale (LSAS); the Japanese Irrational Belief Test (JIBT) ; and the Self-Rated Depression Scale(SDS). First, correlation analysis revealed that there was a moderate positive correlationship among each measure. Second, partial correlation coefficients among each measure by controlling JIBT were calculated. The results indicated that cost bias related to social anxiety independently. Third, partial correlation coefficients between each measure by controlling SCOP indicated that there was a weak relationship between irrational belief and social anxiety. These results indicated that cost bias which is the specific cognitive bias in social anxiety is strongly rerated to SAD symptoms. On the other hand, it was a suggested that there was a spurious correlation between irrational belief and social anxiety. Based on these findings, the importance to assess and improve the specific cognitive bias in SAD was indicated.

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