Background and Aim: Investigating the psychological issues of patients with diabetes, especially in adolescence and youth, is particularly important. Therefore, this study aims to Investigating cognitive inhibition of people with type 1 diabetes with healthy people. Materials and methods: This research is a description of the causal and comparative types. Its statistical population consists of all boys and girls aged 14 to 24 years old with type 1 diabetes in Arak city who were referred to the treatment clinics of this city in 1400. From this population, 30 people were selected by purposive sampling, and 34 healthy teenagers participated in this study as a comparison group. The tools of this research included the open-ended task, stroop task, and multivariate analysis of variance was used to analyze the data. Ethical Considerations: The present research has been registered with the code IR.ARAKU.REC.1401.015 in the Ethics Committee of Arak University. Findings: The present study's findings showed a significant difference between cognitive inhibition of adolescents with type 1 diabetes and healthy adolescents using go/ no-go task (p<0.05). But no significant difference was observed between the two groups in the Stroop task. Conclusion: The results of this research show the higher level of poor performance of adolescents with type 1 diabetes in choosing the right answer and neglect the wrong answer, which indicates a weakness in their inhibition system. Considering the placement of these problems along with the psychological characteristics of adolescence, it is suggested to use suitable psychological treatment approaches and suitable cognitive rehabilitation interventions to solve or reduce these problems and increase the health of these patients.
