For children and adolescents with social anxiety disorder (SAD) , e ects of cognitive behavioral therapy are relatively modest, and various treatment techniques are present currently. The purposes of this study were to establish and validate the cognitive behavioral model of SAD in childhood and adolescence, and to classify them into subtypes of social anxiety symptoms including negative belief, anxiety, avoidance, and somatic symptom. Participants were 1595 (range=9-15 years old) including

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... entary school students (n=826) and middle school students (n=769) . Results revealed that negative belief evokes anxiety in social situations, and increased anxiety induces avoidance behavior and/or somatic symptoms in children similar to adults (GFI=0.93, CFI=0.95, RMSEA=0.05) . In addition, it was revealed that negative belief more strongly contributes to anxiety, and anxiety more strongly contributes to somatic symptoms in adolescents in comparison with children. Result of a cluster analysis showed that four clusters were obtained; Fear-avoidance type, Mixed Symptoms type, Low Social Anxiety type, and Anxiety-somatic type. Many children were classi ed as Fear-avoidance or Anxiety-somatic type, and many adolescents were Mixed Symptoms type. Finally, treatment implications for each subtype were discussed.