investigating the stages of changing the treatment process and its effect on action flexibility and metacognitive beliefs of people with drugs’ addiction

Objective: the aim of this study was to investigate the stages of change in the treatment process and its effect on action flexibility and metacognitive beliefs of people with drugs’ addiction.method: the study sample consisted of 30 (15 people in the experimental group, 15 people in the control group) of addicts who were selected by available and voluntary sampling. the research design was pre-test-post-test with a control group and they answered the research tools which were conner and davidson (2003) action flexibility questionnaire and metacognitive beliefs questionnaire (30-mcq). analysis of covariance (mancova) was used to analyze the data.results: according to the results of the experimental group and the control group, there is a significant difference in terms of positive beliefs about anxiety, beliefs about uncontrollability, low cognitive confidence, need to control thoughts and cognitive awareness.conclusion: group therapy based on stages of change increased action flexibility and decreased metacognitive beliefs of drug addicts in the experimental group compared to the control group.