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Peer reviewedLawson, Anton E. – Journal of Experimental Child Psychology, 1976
Eighty-two children (aged 4 through 6) were administered a Backward Digit Span test to measure M-space (mental capacity) and four conservation tasks: number, substance, continuous quantity and weight. (MS)
Descriptors: Behavioral Science Research, Cognitive Development, Cognitive Processes, Conservation (Concept)
