Study attempted to specify two complementary aspects of children's inferential size judgments within the context of Piaget's theory. (Authors)

The motion variable in the learning process was investigated in three parallel experiments (science, motor skills, social studies), each designed to meet instructional objectives of fact learning, serial ordering, and concept learning. Stimulus sequences were shown as motion pictures, sequenced still pictures, or single still pictures to 582…

Reviews evidence against theories about preschool childrens' egocentricity and cognitive ineptness in the areas of classification, communication, number and order concepts, memory skills, and capacity for reasoning about causal relationships. Holds that preschoolers have been misunderstood because researchers tend to approach them with tasks…

This study attempted to determine whether a combination of seriation and classification training would produce more general intellectual gains. (Author/SB)

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…

A study was designed to develop an instrument and methodological procedure to assess transitive relations within seriation problems in elementary school children using three criteria: explanations, judgments, and strategies. A secondary analysis to assess transitivity used the three criteria according to whether the children were conservers, in…

Through seriation, verbal seriation, and conservation tasks, investigated blind, partially sighted, and sighted children's understanding of quantity. Subjects were 81 children equally dispersed through these 3 groups. Age range was 4 to 17 years. Found similarity in concept acquisition among three groups that extended beyond quantity conservation…