Intelligent Tutoring Systems: A Taxonomy of Evaluation Issues
Interim rept. Aug 1988-Dec 1989,
AIR FORCE HUMAN RESOURCES LAB BROOKS AFB TX
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This paper posits a taxonomy for categorizing issues that arise in the evaluation of Intelligent Tutoring Systems ITSs. The taxonomy has three dimensions Life Cycle of Evaluation, Research Issues, and Methodological Issues. The Life Cycle dimension has four levels pre-experimental, laboratory study, field study, and initial operational test and evaluation. The three levels of the Research Issues dimension--functionality, effectiveness, and cost- -are subsequently further divided into several sublevels. The Methodological Issues dimension is discussed in the context of each of the Research Issues levels. A recommendation from this work is that ITS evaluation studies should adopt multi-dimensional, multi-method designs.
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