This project examines anaphora (the linguistic device of abbreviated subsequent reference to a concept) in information retrieval (IR) systems in order to develop procedures to recognize anaphors in text and distinguish between anaphoric and non-anaphoric uses of a given term, estimate the number of anaphors appearing in bibliographic records, and…

Simultaneous estimation of many parameters can often be improved, sometimes dramatically so, if it is reasonable to consider one or more subsets of parameters as exchangeable members of corresponding populations. While each observation may provide limited information about the parameters it is modeled directly in terms of, it also contributes…

This paper identifies and discusses inequities in the educational system of Papua New Guinea (PNG). It begins by explaining the use of the Gini coefficient as an equity index, and then discusses inequities and equity trends in four concern areas: geographic distribution of formal education between provinces; educational achievement; distribution…

A common problem in the behavioral sciences is to determine if a set of observed variables can be more parsimoniously represented by a smaller set of derived variables. To address this problem, the performance of five methods for determining the number of components to retain (Horn's parallel analysis, Velicer's Minimum Average Partial (MAP),…

For decades, there has been considerable interest in understanding how attitudes toward other nations and cultures are formed and how people differ in their knowledge and attitudes toward global issues. However, the available research on the topic is sparse and disconnected. This paper suggests a model for looking at the research and presents…

Noting the lack of a dispute mechanism for determining whether an advertising practice is truly deceptive without generating the costs and negative publicity produced by traditional Federal Trade Commission (FTC) procedures, this paper proposes a model based upon early termination of the issues through jointly commissioned behavioral research. The…

Significant to a latent trait or item response theory analysis of a mental test is the determination of exactly what is being quantified. The following are practical problems to be considered in the formulation of a good theory: (1) deciding whether two tests measure the same trait or traits; (2) analyzing the relative contributions of a pair of…

This report analyzes possible causes of current trends in educational achievement and discusses implications for policy. It uses data described in the publication "Trends in Educational Achievement," a Congressional Budget Office study released in April 1986, which assessed data about trends in test scores. This report begins with a…

The predictive analysis approach to adaptive testing originated in the idea of statistical predictive analysis suggested by J. Aitchison and I.R. Dunsmore (1975). The adaptive testing model proposed is based on parameter-free predictive distribution. Aitchison and Dunsmore define statistical prediction analysis as the use of data obtained from an…

The feasibility of employing survey data that uses the states of the United States as the societal units in macro-level sociological research was studied. The range of issues available for research opened to investigation would be greatly expanded if it were possible to aggregate national survey data to produce state-level statistics for variables…

The advantages and disadvantages of two common grading methods are presented, and from an analysis of the virtues and vices of these prototypic methods, a set of goals or criteria for grading systems is derived. Percentage and class-curve grading systems are discussed in detail. Criteria for grading systems include the following: obtain relevant…

This study was designed to determine item bias by sex on a test of spatial visualization administered to middle school students. Two chi square techniques were used to assess item bias: the Scheuneman C2 and the Camilli chi square. The direction of bias was indicated by assigning positive signs to the chi square components contributed by one group…

Effectiveness ratings of principals by researchers have frequently been hampered by relying on teachers' one-dimensional, research-triggered "global" ratings. This paper reports a 1979-80 British Comumbia superintendents' study geared toward multidimensional subjective assessments of 266 administrators, and concentrates primarily on ways…

The Polaris Project was conducted with first year students in the Kanawha County Schools. This study was designed to support educational planning and decision-making through systematic evaluation. Data concerning three of the Polaris Project objectives were analyzed. These objectives included: helping students progress/achieve beyond expectations;…

In order to determine the extent of residential segregation among first or second generation Arabs living in and around Paterson, New Jersey, 286 families were located and interviewed. Field data were combined with statistics from the U.S. Census Bureau Population and Housing Summary Tape File 1-A. It was found that residential segregation was not…