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Becker, Joseph; Miller-Jones, Dalton – 1986
The reasoning of adolescents in indeterminate situations was examined with particular attention given to how individuals incorporate the possibility that outcomes are determined jointly by more than one variable. Kuhn and Brannock's (1977) plant problem and two other similarly structured problems were administered to 25 inner-city adolescents…
Descriptors: Adolescents, Cognitive Ability, Cognitive Processes, Formal Operations
Hubbs-Tait, Laura – 1986
A task was developed to differentiate the reasoning of elementary school students in fifth, sixth, and seventh grades. Subjects completed 16 matrices containing two, three, or four dimensions and varying in the embeddedness of the dimensions. They also solved a formal operational task assessing ability to isolate, exclude, and include variables.…
Descriptors: Age Differences, Cognitive Ability, Developmental Stages, Elementary Education

Niaz, Mansoor – International Journal of Science Education, 1988
Investigated were the relation between functional M-capacity and student performance in solving chemistry problems of increasing M-demand. Student performance decreased as the M-demand of the problems increased. (Author/YP)
Descriptors: Chemistry, Cognitive Ability, Cognitive Measurement, Cognitive Structures
Gray, William M.; Rush, Mary Lou – 1986
W. M. Gray's "How is Your Logic?" a Piagetian-based, group-administered written test of cognitive development, and B. Leadbeater's Livian Wars Task, a formal operations-based, written, social-cognition problem were given to 348 college undergraduate and graduate students to investigate the impact of chronological age and amount of formal…
Descriptors: Academic Achievement, Age Differences, Cognitive Ability, Cognitive Development