Study tests four predictions derived from Piaget's cognitive theory. (CB)

A combination of readiness and body-part training was the most effective in producing number conservation with external objects. (Authors)

Evaluated the possibility that three-year-olds solve small-number conservation problems by an empirical procedure whereby the sets are quantified each time presented. Children chose the more numerous of two arrays, one containing two elements and the other three elements. Results disconfirmed claims that three-year-olds can conserve small numbers.…

Preschool children were trained to acquire transitivity, conservation, and class inclusion of length via feedback to their judgments. Feedback was found to facilitate the learning of all three concepts. (ST)

Research supported by the U.S. Office of Economic Opportunity grant 1492.

Four experiments are described in which observational learning was found on multidimensional conservation tasks. (MB)

Results are discussed in terms of why children of the same age fail to conserve number in the standard conservation task and how complex number concepts might develop. (Author)

Investigates which aspects of the mother behavior in interaction would be related, and in what way, to the child's acquisition of number conservation as a criterion measure of later cognitive development. (MP)

Two studies sought to determine the developmental relationship between the child's use of counting as a notational symbol system to extract, compare, and reproduce numerical information and the development of number conservation. Subjects were four- to six-year-old children in Study 1 and seven- to nine-year-old learning disabled children in Study…

Forty-four middle and 44 lower SES children were given Piaget's provoked and spontaneous correspondence tests to see: (1) how they made correspondence, (2) if the idea of equivalent sets, once achieved, was retained after objects were regrouped destroying visible equivalence, and (3) if age, sex, and SES differences existed. Results indicated that…

This study compared the effects of a formal, an open-framework, and a control preschool program on children's intellectual development. The formal program, based on Ausubel's and Piaget's theories, had a daily schedule of short prescriptive teaching sessions followed by related learning activities. The informal program, based on Piaget's theory,…

TO DETERMINE HOW TRAINING WOULD AFFECT CHILDREN FROM DIFFERENT LEVELS OF DEVELOPMENT, FIVE DISADVANTAGED AND FIVE ADVANTAGED PRESCHOOLERS WERE GIVEN SPECIFIC PROBLEM SOLVING TRAINING TO PREPARE TO SOLVE A CRITERION PROBLEM. THIS STUDY WAS AN ATTEMPT TO DISPROVE PIAGET'S THEORY THAT CHILDREN MUST HAVE REACHED A CERTAIN STAGE OF CONCRETE-OPERATIONAL…

Nursery school children (N=64) received seven tests of conservation of number which varied in the type and number of perceptual supports for conservation. Most of the tests with these supports facilitated performance in comparison to the standard conservation test. Conservation appeared earlier than usual. There were significant effects of…

The concepts "more" and "less" were analyzed into two meaning dimensions, "existence" (derived from children's early language) and "quantity," which were hypothesized to be developmentally related to acts of addition and subtraction. Two experiments tested two- and three-year-olds' comprehension of these concepts when initially equal or unequal…