Before starting school, many children reason logically about concepts that are basic to their later mathematical learning. We describe a measure of quantitative reasoning that was administered to children at school entry (mean age 5.8 years) and accounted for more variance in a mathematical attainment test than general cognitive ability 16 months…

We conducted a longitudinal analysis of the relative intensity and duration of interests associated with conceptual domains between the ages of 4 and 6 years, respectively. Results indicated a significant portion of preschool children do sustain an interest in conceptual domains during some portion of their childhood. Expected gender differences…

Studies from different theoretical traditions investigating children's inheritance and genetics concepts have adopted a cross-sectional method. This paper is the first to examine both cross-sectional and longitudinal changes in children's basic genetic concepts. It forms part of a larger investigation into the development of intuitive inheritance…

Young children were studied in tasks that required them to select one object as "different" from another. Children systematically selected maximally similar objects until about 3 years of age, and thereafter performed correctly. Additional data derived from the children's verbal justifications and refusals to select suggested a 4-stage model in…

Two studies trace children's acquisition of counting as a means to extract, compare, and reproduce number from arrays of objects. Study 1 examined 3-, 4-, and 7-year-olds' use of counting to compare and reproduce arrays numerically. In study 2, nine of the 3-year-olds from the study 1 were retested after 12 and 18 months. (Author/JMB)

Results of this five-year study indicated that tonality, in the singing of scales and songs, is a "learned" concept, not related at a significant level to voice range. Differences between the study groups are discussed. (Author/SJL)

Examines the issue of object sorting in early infancy. Forty-eight infants at 6, 9, and 12 months were presented with eight sets of small, manipulable objects. At six months, selective manipulation was absent; at nine months, 94 percent of the infants sequentially touched similar objects and at 12 months 100 percent did so. (Author/DB)

Emerging from a human constructivist view of learning and a punctuated model of conceptual change, these studies explored differences in the structural complexity and content validity of knowledge about prehistoric life depicted in concept maps by learners ranging in age from approximately 10 to 20 years. Study 1 (cross-age) explored the…

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)

Three longitudinal studies examined means-ends behavior of 6- to 8-month olds. Found that intentional means-end behavior increased between 6 and 7 months, with 7-month olds' performance influenced by the presence of a toy on the cloth. Performance was the same when cloth was attached to or separate from the toy. By 8 months, infants adjusted…

This study is part of a longitudinal research project which investigated the cognitive and social development of rural children (ages 3-5, 6-8, and 9-11 years) in eight states of the U.S.A. This paper, however, reports only the cognitive development of 3- to 5-year-old subjects in rural Nebraska from 1976-1978. The longitudinal sample plus control…

The growth in science understanding and reasoning of 12 children is being traced through their primary school years. The paper reports findings concerning children's growing understandings of evaporation, and their changing responses to exploration activities, that show the complexity and coherence of learning pathways. Children's responses to…

In the continuation of an earlier study, 69 high school students who had completed an epistemological beliefs questionnaire in 1992 completed the questionnaire again as seniors in 1995. Beliefs in fixed ability to learn, simple knowledge, quick learning, and certain knowledge changed as they grew older. (SLD)

A 7-month longitudinal study of 20 2- and 3-year-old children shows that children at an early age already know that counting words each refer to a distinct numerosity, although they do not know to which numerosity. It takes children a long time to learn the latter. (SLD)