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Peer reviewedFrydman, Oliver; Bryant, Peter – Journal of Experimental Child Psychology, 1994
Examined Piaget's claim that young children have difficulties constructing common multiples because of an inability to abstract the number of actions performed to obtain a number of objects. Subjects were two groups of preschool children in sharing tasks. Results showed improvement in performance based on certain conditions, but the significance…
Descriptors: Cognitive Development, Computation, Developmental Tasks, Foreign Countries
Peer reviewedKlahr, David; Wallace, J. G. – Cognitive Psychology, 1973
An analysis of the quantitative processes underlying conservation of quantity is presented. Models of three quantitative operators--subitizing, counting, and estimation--are derived from adult performance in quantification tasks, and some features of the operators are described. The emergence of conservation is described in terms of the…
Descriptors: Cognitive Development, Cognitive Processes, Computation, Concept Formation
