This article contrasts the philosophies of early childhood special education and early childhood education and discusses a service delivery approach, known as activity-based intervention, which combines strategies for both fields and utilizes behavior analytic techniques within child-directed activities. (Author/DB)

The use of naturalistic teaching procedures in developmentally appropriate early childhood settings was evaluated in two single subject studies. Acquisition and maintenance of skills within developmentally appropriate play contexts were demonstrated by a preschooler with Down's syndrome and one with mild developmental delay. (DB)