Statistical analysis of many studies on Piaget's stage 4 object concept attempts to synthesize available quantitative data. Factors of this "meta-analysis" include: (1) effects of age; (2) number of A trials; (3) length of delay between hiding and search; (4) number of locations; and (5) visual properties of hiding arrays. Includes…

Contends that theoretical and conceptual problems relating to the validation of assessment centers must be resolved before quantitative validation methods may be used. An open design is suggested to facilitate conceptual clarification. (CH)

The papers in this journal, dedicated exclusively to problems in the teaching of statistics, fall into two categories: (1) policies and procedures intended to improve the teaching of statistics; and (2) new presentations of relevant statistical topics intended to improve specific pedagogical practice. Additional areas of needed research in…

Earnings differences are relatively small between women and men in narrowly defined jobs; however, relatively few women fill the higher levels of these jobs. (Author/JOW)

Discusses the now defunct monthly survey of labor turnover, predominantly in manufacturing. The statistics were used primarily for economic and labor market analysis and for research. The program's major shortcoming was its limited scope--its coverage was not representative of overall economic behavior. (JOW)

Focuses on the development of conversation analysis (CA) and the recognition it has earned in a number of disciplines, including communication. Suggests that, during the next period of development, CA methods will become more quantitative. (Author/VWL)

Provides an introduction to this special issue. Summarizes the process of topic selection, article format, and topic sequence. (GCP)

Traces some aspects of the development of stochastics education and research to provide a background for understanding the place of the Psychology of Mathematics Education (PME) Stochastics Group in the research process. (MM)

This article presents the author's critique on "Measurement of Central Aspects of Scientific Research: Performance, Interdisciplinarity, Structure," by Anthony F. J. van Raan. It also presents a summary of recent work by the Leiden bibliometrics group, which van Raan has led so ably for more than 15 years. The group has established an excellent…

Education statistics are rarely neutral; those who collect and analyze them have different purposes. In this article, Bracey discusses several principles of data interpretation to help educators avoid falling into statistical traps. For example, because such reports as A Nation At Risk contain many "selected, spun, distorted, and even manufactured…

In elementary economics courses students are often introduced to the basic concepts of macroeconomics through very simplified static models, and the concept of a macroeconomic equilibrium is generally explained with the help of an aggregate demand/aggregate supply (AD/AS) model and an income/expenditure model (via the Keynesian cross diagram).…

The richness of the information available in cross-classification tables, compared to the information conveyed in the typical correlation coefficient, is emphasized in this paper. The kinds of information to be found in cross-classification tables are described, and several examples of the use of cross-classification patterns in research are…

Provides a set of guidelines for evaluating research using structural equation modeling (SEM). Offers insight into how someone familiar with SEM would judge the adequacy of a study using such methods. (Author/RH)

Defines the "unit of analysis" and the "context of analysis" and examines examples of the misuse of these concepts in research articles in the "Educational Administration Quarterly." Discusses the use of various statistics with different analytical units and contexts and makes three recommendations to alleviate the…

The author contends Glass, Peckham, and Sanders erred in discouraging the use of nonparametric counterparts of the t-test, even when it was known data were sampled from skewed distributions. He believes Wilcoxon's rank-sum test has power properties that make it preferable in most nonnormal population situations. (Author/DWH)