Investigated was the distinction between identity conservation and equivalence conservation in 180 preschool, kindergarten and third grade students. Ss were assigned to one of six different counterbalanced orders of presentation for the conservation task battery. The factors were age, task (identity/equivalence), criterion (judgment only/judgment…

This study is a longitudinal follow-up analysis of children's performances on a number of Piagetian concrete operations tasks dealing with conservation and transitive inference. Subjects were 102 children selected from kindergarten and grades 1, 3, and 4. (Author/MP)

Kindergarten and third grade children originally assessed in 1973 were retested one year later on a series of conservation and transitive inference tasks (length and weight content areas). An additional sample of matched cohort/grade subjects was assessed in the second year only to permit evaluation of repeat measurement biases for the…

This report is the initial overall summary of a comprehensive analysis of children's logical concept attainments and memoric abilities and deals exclusively with the initial and second year's assessment data. The focal point for this normative investigation is the concrete operations period spanning the years of middle childhood. The measurement…

This 4-year longitudinal study of logical reasoning found complex interrelationships among different cognitive processes of children ages 6 to 15. Piaget's stage theory is discussed in the introduction, with a focus on the concrete operational stage in middle childhood. In the study, a representative array of logical concept tasks and short-term…

While the purpose of this project was curriculum development, long range benefits are contingent upon a radical reorganization and upgrading of public school systems throughout Appalachia. Subjects in the pilot assessment consisted of 80 children (3 1/2 to 6 1/2 years old) and their mothers from each of Monongalia and Upshur Counties, West…