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Constructivism has been embraced by many in the field of instructional design and technology (IDT), but its advocates have struggled to move beyond theory to practice or to empirically demonstrate the effectiveness of their approach. As an alternative to constructivism, a new perspective emerging in psychology, known as functional contextualism, is presented. Like constructivism, functional contextualism also rejects objectivist epistemology, but provides a much more coherent philosophical basis on which to build an empirical science of learning and instruction. The philosophical worldview known as contextualism is reviewed to outline the similarities and differences between constructivism and functional contextualism, and the key characteristics of functional contextualism and the science it supports, behavior analysis, are described. Implications of functional contextualism for research and practice in IDT are then explored.Constructivism has emerged as a powerful-if not the dominant-perspective in American education, and its impact on the field of instructional design and technology (IDT) is evident. Viewing knowledge not as "something we acquire but something that we produce," (Mautner, 1996, p. 83), constructivists have challenged the field to examine more carefully its philosophical and epistemological assumptions. Some authors propose nothing short of an epistemological revolution in IDT as they boldly claim that "the findings of constructivism replace rather than add to our current understanding of learn

Although Skinner's Verbal Behavior (1957) was published over 50 years ago, behavior-analytic research on human language and cognition has been slow to develop. In recent years, a new behavioral approach to language known as relational frame theory (RFT) has generated considerable attention, research, and debate. The controversy surrounding RFT can be difficult to fully appreciate, partly because of the complexity of the theory itself and partly because the debate has spanned several years and several journals. The current paper aims to provide a concise overview of RFT and a summary of key points of debate and controversy.

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Human performance technology (HPT) is having a significant impact on the field of instructional design and technology (IDT), and many IDT graduate programs now offer training in HPT to their students. However, some IDT programs may be struggling with the extent to which they should incorporate the principles and techniques of HPT into their courses. To provide some determination of which specific skills and competencies in HPT graduates of IDT programs should have, an online survey was administered to 24 Performance Improvement Quarterly,