THE EFFECTIVENESS OF THE TECHNIQUE OF REVISED HABITUATION (SALKOVSKIS & WESTBROOK, 1989) HAS RECEIVED LIMITED ATTENTION IN THE LITERATURE. THIS PAPER DESCRIBES A CLINICAL EXAMPLE WHICH DEMONSTRATES BOTH- THE UTILITY AND POWER OF THIS INTERVENTION IN COMPLEX CASES OF OBSESSIVE-COMPULSIVE DISORDER.THERE IS NOW GOOD EVIDENCE FOR THE EFFECTIVENESS OF EXPOSURE AND RESPONSE PREVENTION IN THE TREATMENT OF OBSESSIONAL RUMINATIONS ACCOMPANIED BY COMPULSIVE RITUALS (LIKIERMAN & RACHMAN, 1982; PARKINSON & RACHMAN, 1980; RACHMAN, 1976).HOWEVER, TECHNIQUES ATTEMPTING TO CONTROL RUMINATIONS WHICH ARE NOT ACCOMPANIED BY OVERT NEUTRALIZATION, SUCH AS THOUGHT STOPPING, SHOW ONLY MODERATE SUCCESS (STERN, LIPSEDGE &.MARKS, 1973), POSSIBLY BECAUSE OF THE DIFFICULTY OF ASKING THE PATIENTS TO EVOKE AND MAINTAIN THEIR RUMINATIONS RELIABLY.THE DEVELOPMENT OF THE TECHNIQUE OF' REVISED HABITUATION' (SALKOVSKIS & WESTBROOK, 1989) MAY HELP TO OVERCOME THIS DIFFICULTY. USING THIS TECHNIQUE, CLIENTS RECORD THEIR THOUGHTS ONTO A LOOP CASSETTE TAPE (COMMONLY USED IN TELEPHONE ANSWERING MACHINES); BY PLAYING THIS BACK THEY CAN SELF-ADMINISTER A PROGRAMME OF HABITUATION THROUGH EXPOSURE. IN EFFECT THIS CONVERTS COGNITIONS INTO A FORM OF BEHAVIORAL EXPERIENCE, MAKING THEM TRACTABLE TO INTERVENTIONS WHICH ARE KNOWN TO BE EFFECTIVE.