beliefs are foundation of interpretation of different conditions related to world around us and also human's ability in coping with them.some of beliefs cause that ability of adaptability with environment around is increased and the others cause that human become weak mentally while facing with problems of life repeatedly.
Perhaps we can say that the most important psychological intermediary of environment around and life's events in creating kinds of mental and physical diseases or at least in their intensification are beliefs.objective:the purpose of this research was studying the function of 12 kind irrational beliefs related to Albert Ellis for in appearance of coronary heart disease(chd),relationship each one of 12 kind irrational beliefs of Ellis with creating of stresses experience and also role of gender factor in these cases.methods:in order to access to researching goals,among patients suffering from (chd) who refer to Tehran’s heart center which is a new and equipped center,patients including 80 male and 80 female with age's range between 50 up to 65 who didn't have university educations and were married,were selected in addition among visitors and attendants of sick people,80 men and 80 women who matched with patients from view of age- marriage and education's level but they have no every kind of mental and physical disease were selected as witness group.In this research totally 320 subject participated who 160 person are sick and 160 ones are normal.Sick people with permission of their doctor responded to questionnaire consisting of 66 questions in certain hours related to assessment of 12 kind irrational beliefs of Ellis.Next day the same patients responded to questionnaire related to understandings of stress, normal persons also responded in one of hospital's rooms in the from of 2-6 person group every two questionnaire simultaneously.Some of patient's subjects and also normal subjects avoided from cooperation in research.Results= questionnaires were analyzed after scoring using of Manova.Results showed that among 12 kind irrational beliefs of Ellis,3)irrational beliefs including:1)important humans of my life must on regard me,2)the others must behave with me justly 3)Mischievous people must be punished respectively with (P=%2,F=4/25)(P=0/25,F=2/65) had the highest rate in patients suffering from coronary Heart disease significantly.The second finding of research showed significant correlation among 3 mentioned beliefs with experienced stress in this way that correlation of first belief with experienced stress was with second belief with experienced stress(T-%2,R=0/63)and third belief with experienced stress(R=0/69,T=0/03)as well.But significant difference wasn't obtained from view rate of experienced stress between men and women suffering from coronary Heart disease.Conclusion:in economic-social and cultural context that this research has been done in it,existence of three irrational beliefs including:1)important humans of my life must regard me2)The other people must behave with me justly and 3)mischievous people must be punished can play an important role in appearance of(chd)and also creation of stress.Humans who are indeed to(chd)and suffering from it is better to put under rational Emotive psychotherapy for changing of these three beliefs.