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Introduction: Considering the importance of gender identity in personal life and social interactions, the current research was conducted with the aim of "Cognitive-Behavioral Training" effectiveness on psychological distress and cognitive flexibility of people with gender dysphoria disorder.
Methods: The method of the present study was quasi-experimental and its design was pre-test-post-test with the control group. The statistical population of the research included all the people with gender dysphoria disorder referred to the Rasht Social Emergency Center in 2019, that 32 people were selected by purposive sampling method and randomly assigned to 2 intervention and control groups (16 people in each group). To collect data, "Psychological Distress Scale" and "Cognitive Flexibility Inventory" were used in the pre-test and post-test.  Content validity was performed by qualitative method and reliability was performed by internal consistency method by calculating Cronbach's alpha coefficient. The "Cognitive-Behavioral Training" was conducted during 8 sessions of 90 minutes in intervention group. Data were analyzed in SPSS. 23.
Results: By controlling the pre-test score between the intervention and control groups, there was a significant difference between the participants of the two groups in the variable of psychological distress and cognitive flexibility. "Cognitive-Behavioral Training" was effective in reducing psychological distress (F=5.47 and P<0.05) and also increasing cognitive flexibility (F=20.88 and P<0.01) of people with sexual boredom disorder.
Conclusions: Considering the effectiveness of "Cognitive-Behavioral Training" on reducing psychological distress and increasing cognitive flexibility of people with sexual boredom disorder, it is suggested that the above training be used in a wide range of behavioral and cognitive problems.