ENGLISH :
Although spirituality is an integral component of some of the most popular approaches to substance abuse treatment, there is little empirical evidence for a causal relationship between spirituality and treatment success. In the present study, 169(121 male) opiate- or cocaine-abusing treatment seekers completed the Index of Spiritual Experience (INSPIRIT), a questionnaire that assesses both spirituality and religiosity. Responses were analyzed in terms of demographic variables and in-treatment outcome, which was determined by treatment retention and drug screens from observed biweekly urine collections. Religious/spiritual beliefs were common in these participants and were associated with in-treatment outcome: total INSPIRIT score was weakly correlated (r =.16, p <.04 with number of subsequent cocaine-negative urines and participants reporting that they frequently spent time on religious activities showed significantly better outcomes in terms drug use treatment retention. women african americans were more likely than men non-african to report spiritual beliefs or experiences several individual items had higher inspirit scores caucasians. the results suggest experience plays a role substance abuse recovery demographic characteristics should be considered design spiritually oriented behavioral interventions for addiction.>