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Howe, Ann C.; Shayer, Michael – Journal of Research in Science Teaching, 1981
A sex-related difference, favoring boys, was found on initial performance of two samples (one British, one American) of 10- and 11-year-old children on tasks involving volume and density. After classroom instruction that included opportunities for interaction with appropriate materials, both sexes performed at higher levels but differences…
Descriptors: Cognitive Development, Cognitive Measurement, Developmental Stages, Elementary Education

Killian, C. Rodney – Journal of Research in Science Teaching, 1979
Investigates the cognitive functioning of 106 college freshmen using six paper-pencil Piagetian-based tasks. Results show that only 25 percent of the freshmen tested were reasoning at a formal level. (HM)
Descriptors: Cognitive Development, Cognitive Measurement, Cognitive Processes, College Freshmen

Farmer, Walter A.; And Others – Journal of Research in Science Teaching, 1982
Determined the degree to which classification of students (N=512) as formal or concrete based on three Inhelder tasks administered by clinical interview method was mirrored by Longeot and Karplus-Lawson-Renner (KLR) classifications. Results indicate that Longeot and KLR differentiate between concrete/formal operations and are discussed from…
Descriptors: Cognitive Development, Cognitive Measurement, Cognitive Tests, Developmental Stages