The model stresses interactions among specific combinations of cognitive task requirements, learner characteristics, and instructional treatment properties, in a manner analogous to the aptitude-treatment interaction (ATI) model. "Supplantation" is the provision of overt assistance to learners in performing a specific process required by…

This article concerns the limitations of behavioral performance analysis as it is currently conceptualized by many educational technologists, presents a new paradigm for classifying responses, and suggests a more holistic model for human performance analysis that incorporates elements of developmental, behavioral, and cognitive psychology. (Author)

The need for more precise analysis of the complex educational and psychological processes which exist in special classes for the emotionally handicapped, is emphasized. A psycho-educational model, involving teacher-pupil interaction, is developed, and a procedure (the Interaction Analysis System) is formulated for observing and recording behavior.…