The ability of preverbal infants to abstract a prototypical representation of a category, when presented with examples of an artifically constructed category, was investigated. It was determined that infants could process visual information constructively and could take a more active role in category formation than previously believed. (Author/MH)

Shows how a teacher's questions and responses have positive impact on student comprehension. (MKM)

Derives two sufficient conditions for a finitely generated Lie algebra to have the nilpotent hypercenter. Presents a relatively large class of generalized soluble Lie algebras. Proves that if a finitely generated Lie algebra has a nilpotent maximal subalgebra, the Fitting radical is nilpotent. (DDR)

Describes a week-long activity for general to honors-level students that addresses Hubble's law and the universal expansion theory. Uses a discrepant event-type activity to lead up to the abstract principles of the universal expansion theory. (JRH)

Examined differences in self-identity and moral reasoning, as defined by Gilligan and Lyons, between male and female undergraduates (N=77). For self-description modes, findings revealed significant differences between male and female use of connected mode but not for use of separate/objective mode. Found significant differences between male and…

P. Lewicki and others (1988) suggested that subjects unconsciously abstract tacit knowledge about a complex pattern of events in a situation that departs from the artificial grammar learning pattern. The present experiment with 40 third year university students offers an alternative framework that does not assume unconscious rule abstraction. (SLD)

The "word problem" is stated for a given collection. Facts regarding Dehn's Algorithm, definition of Thue systems, a rewriting system, lemmas and corollaries are provided. The situation is examined where the monoid presented by a finite Thue system is a group. (DC)

Mathematical games designed for children from kindergarten to grade five using buttons as counters are described. Each game description includes a brief discussion of the number and mathematical concepts it teaches. (JD)

Argues that writing instruction is most effective when instruction focuses on inquiry which includes: utilizing concrete data, solving problems by using thinking strategies inherent in various writing tasks, focusing on student-centered problems, and encouraging student interaction with a minimum of teacher lecture. (JAD)

Twelve students with autism and 12 with mental retardation, who had passed a first-order test of false belief, were given a second-order reasoning task. No intergroup performance differences were seen. Findings suggest that the difficulty for both groups with the second-order task lies in information processing demands rather than conceptual…

Comments on Flavell's paper (PS 522 962) presented in the same issue. Stresses some of the positive aspects of preschoolers' conception of thinking, and raises questions about the relatively negative portrait of young child's introspective abilities. Discusses evidence of introspection among preschoolers, and underlines the special, and…

Comments on Flavell's paper in this issue. Examines the paper's findings on three different aspects of children's knowledge about thinking: their ability to differentiate thinking from other activities, their awareness that thinking is always going on in people's minds, and their capacity for introspection into their own thinking. Argues that…

Visual learning, the capacity to construe meaning from visual images and to create meaningful visual forms, distills complex information and presents information directly. It plays an important role in development of the ability to abstract and decode. (SK)

Responds to the conversation of two eminent compositionists with Noam Chomsky. Discusses the alleged literary crisis, sensible prescriptivism versus linguistic permissiveness, police and thought control, intellectually interesting versus humanly significant topics, and rhetorical theory. (PRA)

This study presented contextual problems involving rational numbers and proportional reasoning to 7th-grade students with different curricular experiences. Evidence indicates that students in reform curricula, who are encouraged to construct their own conceptual and procedural knowledge of proportionality through collaborative problem-solving…