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Sinnott, Jan Dynda; Guttmann, David – Human Development, 1978
Investigated the performance of a large, representative sample of older adults on Piagetian matrix and formal operations tasks and on an everyday problem solving scale. Studied the relation between performances on these tasks and the relative importance of age, sex, income, education and perceived health on performance level. (Author/SS)
Descriptors: Age, Educational Background, Income, Individual Characteristics