Generalized anxiety disorder obsessive compulsive disorder rumination worry. These results showed that worry and rumination were significantly different between GAD and OCD groups. Rumination is a term often used to describe all obsessional intrusive thoughts, and the definition of rumination perhaps helps encourage that belief 'a deep or considered thought about something', but this is slightly misleading from an OCD context. We also analyzed differences of outcome variables within two clinical groups. Worry, rumination, generalized anxiety disorder (GAD), and obsessive compulsive disorder (OCD) correlated substantially with each other, however, rumination did not mediate the relationship between worry and generalized anxiety disorder (GAD) and between worry and obsessive compulsive disorder (OCD). Self-report questionnaires tapping worry, rumination, generalized anxiety disorder (GAD), and obsessive compulsive disorder (OCD) were administered to a clinical sample of 60 patients aged 30-40. Therefore, the present study was taken up to investigate whether rumination mediates the relationship between worry and generalized anxiety disorder (GAD), and between worry and obsessive compulsive disorder (OCD) in two clinical groups. However, minimal effort has been exerted to investigate whether one type of negative thought process can make way for another type of negative thought process, and if so, how it subsequently results in experiencing a host of symptoms reflective of one or the other type of psychological distress. Ample work has already been conducted on worry and rumination as negative thought processes involved in the etiology of most of the anxiety and mood related disorders.