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Peer reviewedOdom, Arthur Louis; Barrow, Lloyd H. – Journal of Research in Science Teaching, 1995
Presents a diagnostic test for measuring college biology students' understanding of diffusion. Three general steps were used: (1) defining the content boundaries; (2) collecting information on students' misconceptions; and (3) instrument development. The split half reliability was 0.74, difficulty indices ranged from 0.23 to 0.95, and the…
Descriptors: Biology, College Science, College Students, Diagnostic Tests
