Koegel et al. trained parents living in geographically distant areas, and parents reported that they subsequendy had more occurrences of positive interactions with their children. Anan et al. examined the outcome of a 12-week training that educated parents on the implementation of behavioral principles, such as reinforcing appropriate behavior, and Wittingham et ai. examined the outcome of a 9-week program teaching parents positive parenting principles. Both studies demonstrated an overall parent satisfaction with the training programs, as well as improved outcomes for children. Solomon et al. educated parents in positive parenting principals, such as positive attention and praise in a two-phase 6-week session. The authors reported that parents found their children's behaviors less distressing after participating in the parent training. Overall, most parents reported that they were pleased with their participation in these types of service facility-based, family-centered training programs.