This study assessed the influence of age and ability on linear syllogistic reasoning in early adolescence by presenting bright and average 11- and 13-year-olds with 64, 3-term series problems. Results showed a dramatic effect on performance due to ability. Age effect was only marginally significant. (JMB)

Investigated the relationship between psychometrically defined brightness and cognitive development within Piaget's stage theory. Subjects were fifth- and seventh-grade boys. (SDH)

This study examined children's development of the concept of the reciprocal relationship of question and answer by asking subjects to form questions to fit given answers and to form answers for given questions. A total of 72 children (18 per grades 1, 4, 7, and 10) participated in the study. Each child was tested individually on two tasks (the…

This study is based on an earlier investigation by Brant and Trabasso, in which it was demonstrated that 4-year-old children could perform transitive inferences when training forced information encoding by involving questions about two comparative dimensions of an object (long and short). The present study was designed to examine the sources of…

This paper describes six experiments performed to investigate elementary school childrens' understanding of a proportionality concept, the concept of fullness. (CM)

Reviews a model of cognitive development relating the self and self-evaluation, guidelines for applying the model, and counseling applications. Recognizes that individuals may vary their level of abstraction depending on such things as the source of information, the context, and the part of the self being discussed. (LLL)

Experiment designed to answer questions regarding the correspondence between concrete and abstract actions. (Author/CB)

This paper examines the nature of concepts and conceptual processes and the manner of their formation. It argues that a process of successive abstraction and systematization is central to the evolution of conceptual structures. Classificatory processes are discussed and three levels of abstraction outlined. (Author/SJL)

Used a pretest/post-test control group design involving 44 female adolescent subjects to determine whether Moral Stage 3 subjects who have attained early basic formal operations are more susceptible to attempts to stimulate moral development than Stage 3 subjects who have attained only beginning formal operations and lack the cognitive…

Visual learning enhances cognitive understanding of abstract concepts. Perception of such ideas as causality is enriched by visual examples. Perceiving should not be separated from thinking. (SK)

Piaget's studies clearly highlight two qualitative advances made during the preoperational period. The first is the breakthrough of representational intelligence, beginning around 2 years of age. The second is the emergence of coordinated representational thought, beginning around 4 years of age. This paper focuses on the second advance, which…

A study investigating developmental differences in the ability to reason with conditional propositions used five variations of Wason's selection task to assess conditional reasoning in 132 eighth, tenth, and twelfth grade adolescents. In addition to examining developmental differences, the study had as an objective to examine the role of semantic…

The article describes research which attempted to discover whether emotionally disturbed children functioned at Piagetian levels of abstract thought similar to normal children. (CD)

Jean Piaget's theory of genetic epistemology is criticized from a philosophical point of view. (JD)