Describes a model of instructional theory relevant to individualized distance education that is based on Keller's Personalized System of Instruction (PSI), behavior analysis, and the instructional systems development model (ISD). Systems theory is emphasized, and ISD and behavior analysis are discussed as cybernetic processes. (LRW)

A classification scheme for multimedia interaction is described based on the degree of control and type of cognitive engagement experienced by learners in prescriptive, democratic, and cybernetic independent learning environments. Reactive, proactive, and mutual levels of interaction and their associated functions and transactions are discussed.…