Introduction: The purpose of this research was to compare thinking rumination and defence mechanisms in individuals suffering from major depression disorder and obsessive compulsive disorder with normal persons.
Method: The descriptive research was acausal-comparison kind. The sample included 30 clinical depressed people (women), 30 clinical obsessive ones (16 women,14 men) , and 60 unaffected people (45 women,15 men). The clinical sample was selected by purposive sampling method and normal sample was selected with purposive form and by screening method using MMPI questionnaire.The used instruments included thinking rumination questionnaire(RQ), defence mechanisms questionnaire (DSQ40) and MMPI 71 question questionnaire. For data analysis, the multivariate variance analysis (MANOVA) was used.
Results: The results showed that the amount of thinking rumination in depressed and compulsive group was more than the normal group (p