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Successful and unsuccessful problem solving in classical genetic pedigrees
Author(s) -
Smith Mike U.
Publication year - 1988
Publication title -
journal of research in science teaching
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.067
H-Index - 131
eISSN - 1098-2736
pISSN - 0022-4308
DOI - 10.1002/tea.3660250602
Subject(s) - pedigree chart , psychology , selection (genetic algorithm) , similarity (geometry) , mathematics education , think aloud protocol , process (computing) , qualitative research , cognitive psychology , computer science , artificial intelligence , genetics , biology , sociology , social science , usability , human–computer interaction , gene , image (mathematics) , operating system
Using the think‐aloud interview technique, 16 undergraduates and 11 genetics graduate students and biology faculty members were asked to solve from 1 to 3 classical genetics problems which require pedigree analysis. Subjects were classified as either successful or unsuccessful and the performances of these groups were analyzed from videotaped recordings of the interviews. A number of previously reported findings were corroborated. Additional observations are discussed in terms of genetic knowledge, use of production rules, strategy selection, use of critical cues, hypothesis testing, use of logic, understanding of issues of probability, and the thinking process itself. Taken collectively, these findings evidence a remarkable similarity between the successful solution of pedigree problems and the processes of medical diagnosis and scientific investigation. This convergence of research findings suggests a qualitative advance in the understanding of problem solving. Based on this understanding, recommendations for classroom instruction are presented.