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In this paper we maintain that there are benefits to extending the scope of student models to include additional information as part of the explicit student model. We illustrate our argument by describing a student model which focuses on 1. performance in the domain; 2. acquisition order of the target knowledge; 3. analogy; 4. learning strategies; 5.(More)
In this paper we explore human tutors’ inferences in relation to learners’ affective states and the relationship between those inferences and the actions that tutors take as their consequence. At the core of the investigations presented in this paper lie fundamental questions associated with the role of affective considerations in computer-mediated(More)
Despite being of crucial importance in Education, the issue of motivation has been only very recently explicitly addressed in Intelligent Tutoring Systems (ITS). In the few studies done, the main focus has been on motivational planning (i.e. how to plan the instruction in order to motivate the student). In this paper we argue that motivation diagnosis (i.e.(More)
Children with ASD have difficulty with social communication, particularly joint attention. Interaction in a virtual environment (VE) may be a means for both understanding these difficulties and addressing them. It is first necessary to discover how this population interacts with virtual characters, and whether they can follow joint attention cues in a VE.(More)
In this paper, Aitana, a Developmental Cognitive Artifact developed byMarques (2006), is used to produce “conceptual” representations of the best known Cellular Automata (CA) rules that perform the Density Classification Task (DCT) (see e.g. Packard, 1984, 1988; Mitchell et al., 1993). The resulting redescriptions are then analysed from the viewpoint of(More)
The interactive STANDUP software was developed to provide children who use augmentative and alternative communication (AAC) with a “language playground.” The software provides appropriate functionality for users with physical, speech, and language impairments to generate and tell novel punning riddles at different levels of complexity. STANDUP(More)
This paper describes the effective application of user modelling to the assessment of the physical ease with which a user can operate a standard QWERTY keyboard. The application is unusual in the sense that physical rather than cognitive skills are being modelled. The model examines four important skills which a user may have difficulty with, and produces(More)