Where can I find information about intelligent tutoring systems?

IT systems exhibit the same basic lay-out, but rather than measurements on a simple variable (temperature), a very complex variable such as student behaviour with respect to some knowledge domain is gauged. IT systems therefore rely on three different subsystems called models or modules to compute their feed-back: the expert model or domain model, the student model, and the tutor model. The expert or domain model contains a description of the behavioural repertoire of an expert in a particular knowledge domain. An example would be the kind of diagnostic and subsequent corrective actions an expert technician takes when confronted with a malfunctioning thermostat. The student model contains descriptions of student behaviour, including his or her misconceptions and knowledge gaps. An apprentice technician might, for instance, believe a thermostat also signals too high temperatures to a furnace (misconception) or might not know about thermostats that also gauge the outdoor temperature (knowledge gap). A mismatch between a student's actual behaviour and the expert's presumed behaviour is signalled to the IT system, which subsequently takes corrective action. To be able to do this, it needs information about what a human tutor in such situations would do: the tutor model.