Proposes that conceptual change is constrained by the child's conceptual structures and the structures inherent in problem-solving tasks. Uses a microgenetic case study and group data to examine how interaction between strategies children bring to a task and the detailed task structure redirect children's attention and create the possibility of…

The application of Piagetian theory to educational practices encounters a series of major difficulties. The main focus of this paper is on the notion of general stages, which has been under attack in numerous studies. Organized in four parts, the paper: (1) discusses the problem of the existence of general stages and of a developmental…

This monograph describes the historical development of radical constructivism. Major topics included are: (1) "The Way of the Sceptics" (describing the sceptic position from Xenophanes, through Pyrrho, to the British Empiricists, and its failure); (2) "The Changed Concept of Knowledge" (outlining G. Vico's statement "the…

Information-processing students solving problems in the 1960s and 1970s accepted the tradition of early experimental psychology in concentrating primarily on the study of "knowledge-lean" tasks in which competence can usually be acquired over short periods of learning and experience. In recent years, experts have examined knowledge-rich…

Recent research has suggested that children acquire important knowledge and attitudes about drugs early in their development. To explore the extent of preschoolers' knowledge of alcoholic beverages, two studies were conducted. In the first study, 20 children, 10 from families with alcoholic fathers and 10 controls, participated in Piagetian-like…

Examining cognitive changes in alcoholics in treatment and nonalcoholics after alcohol cue exposure. Alcoholics responded to alcohol cues with reports of increased physical symptoms, decreased confidence about coping with future temptation, and increased guilt. Findings suggest that alcoholics in high-risk relapse situations experience an increase…

Examines the development of metaphor by using structure-mapping theory to make distinctions among kinds of metaphors. Proposes that children can understand metaphors based on shared object attributes before those based on shared relational structure. Results indicate a developmental shift toward focus on relational structure in metaphor…

The study examines the writing of college freshmen on expository, argumentative, and speculative tasks by means of the Crediton cognitive model in order to describe how and why they evoke the range of responses they do, and why particular cognitive strategies are drawn on. Conclusions are presented and discussed. (Author/CT)

Argues that Bartsch and Wellman are successful in analyzing natural language to understand the emergence and development of a theory of mind in everyday social interaction. Discusses their delineation of the transition from a focus on desire to a concept of belief, and describes their views on contextual and cultural variables in theory of mind…

Argues that reasoning is not governed by mental logic or models. Proposes new operational semantic theory, in which reasoning is based on children's operational understanding of key terms in a given problem. Reports results of a study of class inclusion in which dramatic differences in performance were found as the result of linguistic context.…

Reviews key assumptions of two contextualist theories (constructivism and interactionism), examines the theories' claims, and offers suggestions as to how a sociological analysis of human development can remedy some of the major theoretical failings while building on the basic strengths. Also discusses how a critical contextualism might help…

Presents background information about Vygotskian theories. Describes Vygotsky's Zone of Proximal Development (ZPD). Discusses a model of attitude development that incorporates the ZPD, meta-awareness, the components of an attitude, and factors influencing attitude development. Suggests educational implications. (45 references) (MDH)

Two experiments examined whether 40 infants would reenact what an adult did or intended to do: (1) infants observed an adult unsuccessfully attempt to complete 4 target acts; and (2) children observed a mechanical device tracing the adults' actions. Infants could infer adults' intentions and imitate target acts, suggesting that children can…

This paper theoretically characterizes number sense as a set of cognitive capabilities for constructing and reasoning within mental models. This perspective provides support for viewing various aspects of number sense as features of students' general condition of knowing about numbers and magnitude, rather than as skills needing specific…

Explores the notion that some social interactions are more conducive to the construction of knowledge than others. Describes the use of argumentation as a learning tool during play by analyzing transcripts of the interactions of four-and-a-half year olds. Derives implications for early childhood education from these examples and from a theoretical…