Aim and Background: Addiction and its unpleasant consequences are one of the most important public health problems worldwide. Initial maladaptive schemas are related to addiction. The purpose of this study was to compare the effectiveness of admission and commitment therapy (ACT) and schema therapy on early maladaptive schemas in addicted people. Methods and Materials: The research method was pre-test, post-test experimental study with control group. The statistical population included 1500 people. A sample of 60 people was selected and randomly assigned to 3 groups, one control group (n = 20), and two experimental groups (n = 20, each). Young schema questionnaire short form (YSQ-SF) was used to measure early maladaptive schemas. The experimental groups participated in 12 sessions of the treatment group weekly for two 90-minute sessions. Descriptive statistics including mean and standard deviation, and inferential statistics were analyzed using covariance analysis, homogeneity and uniformity tests of variance and post hoc test. Findings: ACT and schema therapy were effective on the components of early maladaptive schemas. Conclusions: The group-based ACT and schema therapy have been able to reduce early maladaptive schemas and can be used in the treatment of patients with this disorder.

Keywords: Early maladaptive schemas, Acceptance and commitment therapy, Group therapy, Schema therapy, Addiction, Iran

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