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Analogy Events: How Examples are Used During Problem Solving
Author(s) -
VanLehn Kurt
Publication year - 1998
Publication title -
cognitive science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.498
H-Index - 114
eISSN - 1551-6709
pISSN - 0364-0213
DOI - 10.1207/s15516709cog2203_4
Subject(s) - problem solver , initialization , analogy , solver , computer science , copying , set (abstract data type) , event (particle physics) , protocol (science) , transfer (computing) , theoretical computer science , algorithm , programming language , epistemology , philosophy , medicine , physics , alternative medicine , computational science , pathology , quantum mechanics , parallel computing , political science , law
In attempting to fit a model of analogical problem solving to protocol data of students solving physics problems, several unexpected observations were made. Analogies between examples and exercises (a form of case‐based reasoning) consisted of two distinct types of events. During an initialization event, the solver retrieved an example, set up a mapping between it and the problem, and decided whether the example was useful. During a transfer event, the solver inferred something about the problem's solution. Many different types of initialization and transfer events were observed. Poor solvers tended to follow the example verbatim, copying each solution line over to the problem. Good solvers tried to solve the problem themselves, but referred to the example when they got stuck, or wanted to check a step, or wanted to avoid a detailed calculation. Rather than learn from analogies, both Good and Poor solvers tended to repeat analogies at subsequent similar situations. A revised version of the model is proposed (but not yet implemented) that appears to be consistent with all the findings observed in this and other studies of the same subjects.