A few specific cognitive techniques used in the treatment of OCD are as follows: Where patients overestimate personal responsibility, the "pie technique" (25) has them give an initial estimate ofthe percentage of responsibility that would be attributable to them if a feared consequence were to occur. The patient then generates a list ofthe parties (other than himself or herself) who would also have some responsibility for the feared consequence. The patient then draws a pie chart, each slice of which represents one ofthe responsible parties identified. Next, the patient labels all parties' slices according to their percenage of responsibility and labels his or her own slice last. By the exercise's end, it is generally clear to patients that most of the responsibility for the feared event would not be their own. For patients with difficulty discriminating between unwanted obsessional thoughts and actions