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Hafner, Robert; Stewart, Jim – Science Education, 1995
Examines how problem solving in the domain of Mendelian genetics proceeds in situations where solvers' mental models are insufficient to solve problems at hand (model-revising problem solving). The study addressed the heuristics characteristic of successful model-revising problem solving and other aspects of student model use. (LZ)
Descriptors: Concept Formation, Genetics, Heuristics, High Schools

Stewart, Jim – Science Education, 1988
Examines various types of problems that researchers have used to demonstrate problem solving. Focuses on genetics problems. Discusses classes of learning outcomes, conceptual knowledge gains, content-independent heuristics, content-specific procedures, understanding the nature of science and a typology of genetics problems. (CW)
Descriptors: Biological Sciences, Cognitive Ability, College Science, Genetics