Presents a conceptual framework and notation for learner modelling in intelligent tutoring systems based on the computational distinction between behavior, behavioral knowledge, and conceptual knowledge and between the system, the learner, and the system's representation of the learner. Approaches to learner modelling based on a review of the…

Discusses recent advances in cognitive theory and the design of computer-based instruction and suggests implications for the design of authoring tools and tutoring system shells. Highlights include the design of courseware; advanced organizers; knowledge representation; design evaluation; models of knowledge; models of errors; and models of…

Attitudes toward and approaches to error in language learning depend on one's point of view: strictly linguistic, pedagogical, or that of the learner. This last approach is that "one learns by making mistakes," and from that perspective, there is no absolute definition of error, but only an operative one. (MSE)