The purpose of this study was twofold : first, to examine the efficacy of a modified DBT(Dry-Bed Training) procedure in the treatment of nocturnal enuresis in institutionalized mentally retarded adults and, second, to evaluate the side effects of this treatment procedure on other behaviors. Five mentally retarded adults(a mean age of 23. 7ア4.9 years and a mean IQ of 41. 4,13. 7) who were entirely unresponsive to the original DBT procedure or various drug regimens were selected as subjects. The modified DBT procedure in which a procedure of 1 liter of forced liquid was introduced throughout the intensive training and monitored post traing phase of the original DBT procedure was employed until the termination criterion of 7 consecutive dry nights was achieved. The AAMD Adaptive Behavior Scale was used for evaluation of the side effects. The results showed that : (1) all subjects became free of accident after a mean of 32. 4.22. 5 nights of treatment and had no relapse through a mean of 18.8ア4. 9 months of follow-up ; (2) all of unintended effects were of a positive nature, and these positve effects included dramatic improvements in the Self-Direction, the Socialization, the Rebllious Behavior, the Inappropriate Manners, and the Psychological Disturbances. Several interesting features of the clinical data are discussed, rand it is concluded that this modified procedure is superior in all respects to any of the other methods now in use.
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