Analyzes the philosophical assumptions underlying instructional systems technology (IST). Cognitive and behavioral learning theories are discussed, their effects on IST are considered, the philosophical paradigms of objectivism and constructivism are compared, applications of constructivism are described, and implications of constructivism for IST…

Conceptual and methodological problems inherent in Aptitude Treatment Interaction (ATI) research, coupled with the impracticality of its application, call into question its use as a design model. For these reasons, ATI should be de-emphasized as an instructional design model and attention should be refocused on the structure of content and the…

Explores the utility of mental models as learning outcomes in using complex and situated learning environments. Describes two studies: one aimed at eliciting mental models in the heads of novice refrigeration technicians, and the other an ethnographic study eliciting knowledge and models within the community of experienced refrigeration…