Two studies with first- and fifth-grade children in two learning tasks showed that preoperational children did not necessarily learn responses followed by a stimulus object previously instrumental in obtaining a reward, while postoperational subjects did. (Author/JMB)

This study was designed to test the hypothesis that coding used for recall is a dynamic process that changes in accordance with operational structures. Fifty male and female university students participated in two task sessions: (1) Formal operations and recall and (2) recall one month later. Significant correlations supported the basic…

The effects of problem size on judgments of commutativity by 51 moderately and mildly retarded students were investigated. Results indicated that many retarded students who are given computational practice recognize the general principle that addend order does not affect the sum. (Author/DB)

Second and third graders and fifth and sixth graders were tested in a very large, unfamiliar environment to determine the relation of their knowledge of an abstract reference frame to performance on a spatial inference task. (HOD)

Examined the development of belief discrepancy reasoning, or how people evaluate disagreeing others, with 44 college and elderly respondents. Results showed the elderly were significantly lower in belief discrepancy reasoning and higher in dogmatism than the college sample. The elderly sample did not evidence intolerance, but rather relativism.…

This paper examines the cognitive process of concept development in preschool children, based on recent psychological research. Rather than attempting an exhaustive review of the more than 7000 articles written on children's concepts of categories, the paper highlights and illustrates four key themes that emerge from recent research: first,…

Many science curriculum development projects have the goal of increasing students' ability to employ scientific or formal reasoning strategies. Argues that longitudinal data of students who acquired formal reasoning strategies as a consequence of specific instruction are needed to provide evidence that these skills will help in other academic…

Students (N=178) judged the adequacy of reasons presented in stage prototypic responses to moral dilemmas to provide a profile of the frequency and strength with which students rejected early stage reasons. Data indicated definite age trends in rejecting lower-stage reasoning. Higher-stage items produced no significant age differences. (RC)

The aims of this study were (1) to test the dyadic superiority hypothesis by comparing dyadic performance on a logical reasoning task with the performance of children working alone, and (2) to determine whether the incorrect child's compliance with the correct child was a major factor in the dyadic production of correct answers. (Author/DB)

Analyzes the meaning of Piaget's concept of abstraction and provides discussion of some of its shortcomings. (HM)

Interviews 60 Japanese children between the ages of 3 and 7 years to investigate the relationship between levels of abstraction and representation. Indicates that abstraction and representation are closely related. Implies that educators need to focus more on the mental relationships children make because the meaning children can give to…

A review of groundbreaking studies in child development by Piaget, Vygotsky, Baillargeon, Premack, and Woodruff suggests that the ideal learning environment would need to have developmentally appropriate and challenging activities; nurturing experts; plenty of social interaction; and opportunities for problem solving, thoughtful reflection, and…

Studied 100 adolescents' approaches to problem-solving proofs and reasoning competence tasks. Found that a formal level of reasoning competence is associated with a deductive approach. Results support the notion of a cognitive development progression from an inductive approach to a deductive approach. (ETB)

Described are how students (n=2,000) reduce the complexity of multivariable problems. Tendencies toward "functional reduction" in common reasoning are shown to range from a simple reduction in the number of variables considered, to a more elaborate procedure where all variables are taken into account, but in a simplified way involving…