The purpose of this study is to compare thought – action fusion and anxiety sensitivity among girls and boys adolescents having obsessive–compulsive symptoms in clinical and nonclinical extent. The survey selects 384 high school students in city of Esfahan, Iran and distributes a questionnaire among them. All questions are designed in Likert scale and participants are divided into two groups of with and without OCD. The results show that there is a significant and positive difference in thought – action fusion and anxiety sensitivity among girls and boys adolescents having or symptoms in clinical and nonclinical l extent (P & LT; 0.01).