In a study of behavior modification two Down's syndrome preschool children, the first a 5-year-old boy with autistic behavior patterns and the second a 4-year-old girl whose behavior problem was to reject other children, were examined. The first S was engaged in ball catching activities with a teacher with positive reinforcement (playing the S's…

This theme issue presents a variety of articles and resources on the application of positive behavioral support (PBS) with children who exhibit behavior problems in home or school settings. The first article discusses the importance of understanding a challenging behavior's purpose, implementing behavior change strategies, and monitoring…