Presents an investigation of the hypothesis that an increase in the salience of the total class dimension should improve class-inclusion performance. Subjects were 220 children in kindergarten through third grades. (SDH)

This paper describes three classification criterion tasks and the rationale for their selection. A set of parameters is defined and then used to describe the item format for the test. The test format and content domain are presented and discussed. Sample testing directions and materials are appended. (Author)

Reexamined the theoretical question of early childhood egocentrism by replicating Piaget and Inhelder's mountain experiment with variations to insure the age appropriateness of the task for 3- and 4-year-old children. (SDH)

Employed regression analysis to determine the association between multiplicative classification and inductive reasoning. Subjects were 103 fourth grade children. (SDH)

Investigation aided by a grant from the Foundations' Fund for Research in Psychiatry.

There is considerable disagreement concerning the age of onset and universality of attainment of Piaget's stage of formal operations. This study examines developmental differences in response to brief prompts in the use of a formal operational approach to the solution of two tasks. The subjects were 10 males and 10 females from each of Grades 5,…

Young children's thinking is subject to constraints which interfere with instruction, and a developmental approach may be useful in minimizing the detrimental effects of these constraints. The approach is particularly beneficial to handicapped children, those who require remedial work, and adults with inadequate working memory for the specific…

One finding is that the children in this study did not reach a level in the development of these concepts expected by Piaget of 9-year-olds. (Authors/CB)

Task performance experiments concerning properties of mathematical groups with 10 and 11 year-old children are discussed including transfer effects, effects of structural relations, individual differences, and memory (both short and long term). (JG)

Two experiments examined the effects of blocking of word lists (grouped by semantic category membership or randomly ordered) on the dichotic listening performance of second-and fifth-grade children. (CM)

The results fail to support the hypothesis that intersensory integration is the sole or even the primary developmental skill accounting for matching task improvement with increasing age. The hypothesis that retarded readers fail to develop skills in intersensory integration is also not supported. (Authors)

The hierarchical structure of the formal operational period of Piaget's theory of cognitive development was explored through the application of ordering theoretical methods to a set of data that systematically utilized the various formal operational schemes. Results suggested a common structure underlying task performance. (Author/BH)

To investigate developmental differences in timesharing performance, 60 boys, 20 in each of three age groups (7-, 10- and 13-year-olds), performed an auditory matching task and a tracking task alone and concurrently, the latter under two sets of instructions. Decrements produced by concurrent performance were compared for the three age groups.…

A major premise of Piagetian theory relative to the periods of concrete and formal operations is that competence in specific logical operations is a necessary but not sufficient prerequisite to competence in other specific logical operations. The present study tested for the existence of specific concrete operations and specific formal operations…

A group of perceptual and motor tests were administered to 155 advantaged and disadvantaged student. The results are discussed in terms of differential perceptual-motor and motor growth and need to structure educational experience that will contribute to growth. (Author)