Considers the controversy between Bruner "et al." (1966) and Piaget (Inhelder & Piaget, 1964) followed up by Sinclair-de-Zwart (1967) concerning the role of language in the cognitive development of children between the ages of 5 and 7. (Author/RK)

Bytheway discusses the problems of representation and sampling methodology found in the Three Generation Family Study directed by Hill at the University of Minnesota. Hill responds to this criticism and challenges Bytheway to provide a better sampling design. (Author/HLM)

The present study predicted that, if arousal is unitary, then stressors which separately induce it should be additive in their effects on behavioral efficiency. (Editor)

Builds upon earlier experiments in an attempt to measure the interferences between simultaneous tasks and the effects of hypnotic dissociation in increasing or decreasing this interference, thus testing the validity of one or the other of two theoretical models. (Author/RK)

Describes a school mathematics curriculum, steps for its evaluation, an explanation of the mode of implementation of each step, and discusses the ways in which cooperation and systemization enhances the evaluation. (Author/RK)

The purpose of this study was to ascertain whether or not secondary school principals represent the same organizational types found in business and industrial organizations. (Editor)

The results of three studies clearly indicate that ongoing behavior is organized into perceptual units, and that these units may be validly identified by the Newtson (1973) unit marking procedure. (Author)

This research tests the hypothesis that differences in academic performance between children who have never moved and children who have moved once or several times before to a great extent stem from the fact that they perform differently prior to mobility. (Author/RK)

Compares and discusses the findings of the nationwide reading surveys done by the National Assessment of Educational Progress in 1971 and 1975. (HOD) Aspect of National Assessment (NAEP) dealt with in this document: Results (Change).

Discusses an equation that describes the variation with temperature of acid dissociation constants. (MLH)

Describes two investigative labs that use live plants to illustrate important biological principles, include quantitative analysis, and require very little equipment. Each lab is adaptable to a variety of class sizes, course contents, and student backgrounds. Topics include the evolution of flower size in Mimulus and pollination of Brassicas. (DDR)

An analysis of price and scientific value of chemistry journals concluded that scientific value does not play a role in the pricing of scientific journals and that consequently little relationship exists between scientific value and the prices charged libraries for journals. Describes a software package, Serials Evaluator, being developed at…

Students in grades three to four can collect, analyze, and represent data in order to determine which piece of playground equipment appears most popular. Students in grades five to six can investigate the geometry of playground structures using measurement and scale models. Lesson plans and reproducible worksheets are included. (CMS)

Describes geographic information systems and the assembly of data for analysis for the Indianapolis-Marion County Public Library (Indiana). Presents examples of possible analyses: distribution of library patrons; distances patrons travel to use libraries; branch library services and characteristics of populations served; numbers of patrons served…