Given that there is no universal way to measure implementation fidelity, instructional designers developing instructional innovations may find themselves faced with the challenge of determining the extent to which teachers' implementation of an instructional model is faithful. This article contends that a faithful implementation is one in…

Discussion of motivation in the instructional design process highlights an integrated affective domain instructional systems design model that integrates the work of Keller's ARCS (Attention, Relevance, Confidence, Satisfaction) model with a military instructional systems design model. Phases of the model include analysis, design, development,…

Discusses the historical development of "hard" and "soft" systems thinking traditions and examines how these traditions have been understood and applied in the field of instructional development. Proposes the need for a synthesis of the two traditions in planning, implementing, and evaluating instructional programs. (AEF)