The issue of alpha-theta biofeedback in culturally sensitive groups that have not responded to traditional modes of addiction treatment (such as confrontational group therapies) has been considered in an open case series reported by Kelly (1997). This three year follow-up study presented the treatment outcomes of 19 Dine’ (Navajo) clients. Four (21%) participants achieved “sustained full remission,” 12 (63%) achieved “sustained partial remission,” and 3 (16%) remained “dependent.” The majority of participants also showed a significant increase in “level of functioning”.