This paper provides an in-depth view of computer based tutoring/coaching systems and (1) the philosophy behind them, (2) the kinds of diagnostic modeling strategies required to infer a student's shortcomings from observing his behavior, and (3) the range of explicit tutorial strategies needed for directing the tutor to say the right thing at the…

Automated Student Modelling explicates reasoning strategies, the representation of procedural skills, and underlying misconceptions as manifested in errors. A diagnostic model, based on a "procedural network" as opposed to a "semantic network," is presented which provides a technique both for modelling the underlying cognitive processes of a…