Abstract
Evaluation of early intervention programs most often focuses on the assessment of client outcomes. However, the evaluation of the delivery of intervention itself is rarely addressed. Without a clear understanding of the exact intervention(s) that clients received, it is impossible to replicate program efforts with any accuracy. Also, if the delivery of program components (e.g., parent training, classroom intervention) is not measured carefully, it is impossible to establish the relative merits of any one component. This paper offers examples of both measurement procedures and experimental designs that can be employed to assess the delivery and effects of program components in a comprehensive service delivery system for young autistic children.