The purpose of this study is to explore the effects of Acceptance Commitment Therapy(ACT) on symptoms of worry, anxiety, tolerance of uncertainty, emotional regulation and experiential avoidance in university students with excessive worry. Four hundred university students completed the Penn State Worry Questionnaire(PSWQ), Spielberger State-Trait Anxiety Inventory(STAI), Intolerance of Uncertainty Scale(IUS), Korean Version of Difficulties in Emotional Regulation Scale(K-DERS) and Acceptance & Action Questionnaire(AAQ-16). Students were screened by cut-off point of PSWQ and STAI and randomized Some of them had an interview by researcher. Finally Sixteen participants were divided into an ACT group and waiting-list control group(eight each). The ACT program was administered for ten sessions. All participants completed the above scales as pre¬test, post¬test, and after 6 weeks. The results of this study were as follows: Symptoms of worry, anxiety, intolerance of uncertainty, emotional dysregulation level and experiential avoidance of the treatment group decreased more than in the waiting-list control group. The waiting-list control group remained unchanged statistically at the pretest, post¬test, and after 6 weeks. Finally, the implications and limitations of this study, along with suggestions for future studies were discussed.
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