The Effectiveness of Mindfulness-Based Cognitive Therapy on Decreasing Stress and Perfectionism among Female Second-Grade Students of State Elite High Schools of Yazd

Introduction;Mindfulness and acceptance-based therapies are known as third-wave cognitive-behavioral therapies. This therapy combines the presence of the mind as a goal of therapy with exercises such as stopping conscious thinking and non-judgmental observation of onechr('39')s own thoughts. It was present to determine the effectiveness of mindfulness-based cognitive therapy on perfectionism and stress of female students in public model schools in the second year of high school in Yazd Introduction: Mindfulness- and acceptance-based therapies are known as the third wave of cognitive-behavioral therapies. The aim of this study was to determine the effectiveness of mindfulness-based cognitive therapy on perfectionism and stress in female students studying in state model high schools in Yazd. Methods: The total number of this population was 784 in the academic year 2016- 2017, of which 30 people were selected using Multistage Cluster Sampling. Later, they were assigned to two groups (control and experiment) randomly. Ahvaz perfectionist scale (APS) as well as Depression, Anxiety and Stress Scales (DASS) were the research tools used in this study. The intervention included eight sessions of intervention in the experiment group. Mancova (analysis of covariance) was applied to analyze the data obtained. Results: The finding showed that Mindfulness-based Cognitive Therapy was effective in reducing Perfectionism and Stress among the experiment group members (P<0/001). Conclusion: The findings show that Mindfulness-based Cognitive Therapy can be applied to Perfectionism and Stress among female students, paving the way for better adjustment and achievement for these important social group.