Accession Number : ADA274684

Title :   On-Line Assessment of Expertise.

Descriptive Note : Quarterly progress rept. no. 8,

Corporate Author : PITTSBURGH UNIV PA LEARNING RESEARCH AND DEVELOPMENT CENTER

Personal Author(s) : VanLehn, Kurt ; Martin, Joel

Report Date : 07 JAN 1994

Pagination or Media Count : 2

Abstract : There was one major objective during this report period, to develop the assessment techniques for the qualitative problem solving, problem classification, and difficulty estimation activities. As noted in previous quarterly progress reports, these tasks reflect complex processes for which there are no established fine-grained cognitive models. When solving qualitative problems (no math), our cognitive task analysis suggest that students not only do deductive reasoning common to other physics problems, but they also do proofs by contradiction, extrapolation, interpolation, Forbus-like qualitative process modeling, qualitative algebra, case-based reasoning, and several others. Further, both the difficulty estimation and the problem classification involve planning solutions without actually generating them. Because fine-grained models of all these processes are not yet available, we have developed preliminary assessment techniques using existing cognitive and pedagogical models. We will continue to use such techniques until more fine-grained models are available.

Descriptors :   *COGNITION, *QUALITATIVE ANALYSIS, PROBLEM SOLVING, REASONING, LEARNING.

Subject Categories : Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE