Argues that while blind variation and selective retention (BVSR) may not be involved in all forms of human behavior and thought, Donald Campbell has made a compelling case that human creativity and invention involve BVSR. The complementary nature of prior and current BVSR in creative human endeavor is discussed. (Author/CR)

A study of 315 English and 745 Australian elementary school students investigated their conceptions of technology. Found that though they shared a similar range of concepts explaining technology, the frequency of concepts varied. Results suggest that rates of concept formation differ because of interrelated factors: home and school influence,…

The literature on how and when children acquire temporal concepts is reviewed in the context of the acquisition of time concepts by deaf children. The stages at which children acquire concepts of clock, calendar, historical time, and chronology, and effects of language acquisition are discussed. A more formal structure of temporal concepts in the…

Compares the ideas of young people about Newton's third law, focusing on youth of today and youth of the 17th and 18th centuries. Examines the use of Newton's third law in understanding impact phenomena in the 17th and 18th centuries. Contains 46 references. (DDR)

Analyzes the problem students have in learning the Theory of Relativity. Points out that the results of the study are ambiguous and intriguing. Describes the publication of Lorentz's Transformation Equations, the presentation of two postulates by Einstein, and the rejection of the Electron Theory and the final acceptance of the Theory of…

Presents a two-phase investigation of how Israeli students understand the concept of periodicity. Discusses related research with teachers and students (N=895) employing both qualitative and quantitative research methodologies. Concludes that students understand periodicity as a process. Students' errors and preferences are discussed with…

Constructs case studies of individuals to explore the way conceptions change over time, and the difficulties presented by the concept of atmospheric pressure. Evaluates different structural theories of conceptual change. Contains 62 references. (DDR)

Reviews literature on conceptual change and the study of concepts. Introduces a theory of one particular type of concept. Contains 25 references. (DDR)

Critically analyzes some of the ways in which human subjectivity and agency are constructed in the contemporary discourse of environmental-education research. Suggests that methods of constructivist science-education research are not applicable to either subjects or subject matters of environmental education, and poststructuralist methodologies…

Examines third-grade students' ideas on the lunar phases prior to, and following, an instructional period designed to promote students' conceptual change. Demonstrates that students are capable of making conceptual changes. Contains 30 references. (DDR)

Presents an open-ended experiment designed to observe a range of processes and effects associated with electrolysis of an aqueous solution of copper sulfate. Lists materials and procedures. (DDR)

A group of 26 high-school physics teachers completed a card-sorting task to prioritize their choices of topics to include in the physics curriculum. Mechanics, electricity, and magnetism emerged as most important. Covering these topics conflicted with teachers' goals to impart deep conceptual understanding of physics in their students. (33…

Reports the results of a study of active ingredients of creativity techniques, devices that promote idea generation, through an analysis of 172 idea-generation methods which identified three types of idea-generation devices--strategies, tactics, and enablers. These devices were organized into meaningful categories comprising a formulary of active…

Reports on a study that examined potential links between mental models constructed by students, the organizational quality of students' prior geometric knowledge, and the use of that knowledge during problem solving. Suggests that the quality of geometric knowledge that students develop could have a powerful effect on their mental models and…

Responds to Mandler's critique of authors' view of infant categorization. Maintains that their view of infant categorization is not characterized by a shift from one type of category to another but by gradual changes in the kinds of information infants can use in forming categories. Clarifies position regarding a single categorical process using…