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Moshman, David; Franks, Bridget A. – Child Development, 1986
Tested hypothesis that understanding validity of inference is a relatively late development by asking fourth and seventh graders and college students to sort sets of deductive arguments. None of fourth graders, 45 percent of seventh graders, and 85 percent of college students used validity as basis for distinguishing arguments. Experiments…
Descriptors: Abstract Reasoning, Age Differences, College Students, Deduction