Attempts to account for discrepancies between results of the Hall and Kingsley experiment (1968), (in which the majority of college students did not resist extinction in a contrived instance of non-conservation of weight), and the Miller, Schwartz and Stewart experiment (1973), (in which the majority did resist extinction). (ED)

Suggests an approach to the assessment of children's conservation ability which analyzes the stimulus variables and cognitive performance. The analysis of performance variables focuses on the role of attention. (MP)

This study is a replication of Piaget and Inhelder's intertask study of conservation and conservation-related tasks involving subjects ranging in age from nursery to second grade and using varying types of vessels. (SB)

The conservation of distance and of length and the awareness of the horizontal and of the vertical do seem to significantly precede the measurement of length, but the results did not indicate that these four tasks have any developmental order among themselves. Bibliography, charts. (Author)

This study examined language ability in children of the same mental age who differed in their level of cognitive development. Subjects were 68 first-graders, 33 male, 35 female, from a predominantly middle-class elementary school. (Author/SB)

An investigation of the influence of internal and external cues upon the perception of humor in the violation of a logical expectancy (using conservation of weight) in a total of 108 third and fifth graders. (ED)

Studies the effects of modeling and reversibility cues in teaching 4-year-olds to conserve length. Results are discussed in terms of a social learning viewpoint of cognitive development. (ED)

Data suggest an ability to use concrete-operational reasoning is not required for doing complex arithmetic, even though it may be necessary for learning these arithmetic skills. (Authors)

This paper reports the findings of three studies aimed at further investigating the development of water level representation in elementary school age children as related to field independence. (SB)

This is a detailed review of studies of extinction of Piagetian concepts, stressing that interpretation of such research is complicated by methodological problems, some avoidable, some intrinsic to the extinction paradigm; and that this paradigm retains the potential for contributing important information about the nature of concrete-operational…

The main problem of this study was to attempt to determine the source of adults' nonconservation error as well as to explain young children's apparent success. Subjects were 188 children from elementary school, high school, and college. (Author/MP)

Provides data indicating that development occurs in cycles, with behavioral competencies appearing and developing and then disappearing only to reappear again in a more complex form at a later age. Data on conservation and auditory-manual coordination in infancy are used to support this theory. (ED)