Examines the effect of network and public television programs on children's: ability to attend to a task, time on task, and engagement in rough-and-tumble play. Sixty-two children were assigned to one of three groups that watched: (1) a public television program; (2) a network television program; and (3) no television and instead played with instructional materials. Discusses implications for children's programming and environmental influences on attention. (AEF)