This study was designed to determine the effectiveness of the 10-week filial therapy model as an intervention for Native American parents and their children residing on the Flathead Reservation in Montana. Filial therapy is an approach used by play therapists to train parents to be therapeutic agents with their own children. Parents are taught basic child-centered play therapy skills and practice those skills during weekly play sessions with their children. The purpose of this study was to determine if filial therapy is effective in: 1) increasing parental acceptance of Native Americans residing on the Flathead Reservation of their children; 2) reducing the stress level of those parents; 3) improving empathic behaviors of those parents toward their children; 4) changing the play behaviors of children with their parents who participated in the training; and, 5) enhancing the self-concept of those children. The experimental group parents (N=11) received 10 weekly 2-hour filial therapy training sessions and participated in weekly 30-minute play sessions with one of their children. The control group (N=10) received no treatment during the 10 weeks. All adult participants completed the Porter Parental Acceptance Scale and the Parenting Stress Index. Child participants completed the Joseph Pre-school and Primary Self Concept Screening Test. Parent and child participants were videotaped playing together in 20-minute videotaped play sessions before and after the training to measure empathic behavior in parent-child interactions and desirable play behaviors in children. Analyses of Covariance revealed that the Native American parents in the experimental group significantly increased their level of empathy in their interactions with their children. Experimental group children significantly increased their level of desirable play behaviors with their parents. Although parental acceptance, parental stress, and children's self concept did not improve significantly, all measures indicated positive trends. In addition, this study gives rise to questions regarding the suitability of current self concept measurement instruments for Native American children and possible cultural differences in parent stress and parental acceptance.