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Spitz, Herman H.; And Others – Intelligence, 1982
Demonstrated is a covariance principle that causes the observer to assume that if one aspect of a two-dimensional figure (its perimeter or its area) is conserved, the other aspect must also be conserved (pseudo-conservation). Mentally retarded individuals, assuming no such fixed relationship, correctly judged the changed state of the nonconserved…
Descriptors: Adults, Analysis of Covariance, Cognitive Processes, Concept Formation
Johnson, Martin L.
The purposes of this study were to: (1) determine the influence of a series of experiences involving the equivalence relation "same length as" and the asymmetric transitive relations "longer than" and "shorter than" on the ability of first and second grade children to classify and seriate objects on the basis of length; (2) investigate the…
Descriptors: Age Differences, Classification, Conservation (Concept), Educational Research