The purpose of this research was to compare the performances of the Fixed Effect Model (FEM) and the Random Effects Model (REM) in the meta-analysis studies conducted through 5, 10, 20 and 40 studies with an outlier and 4, 9, 19 and 39 studies without an outlier in terms of estimated common effect size, confidence interval coverage rate and…

The growth of Learning Analytics (LA) as a research field has been extensively documented since its beginnings. This paper provides a broad overview of the publications that Latin American authors have published in the last years by performing a quantitative review of the literature (from 2011 to 2019). A total of 282 papers were collected and…

The use of individual patient data (IPD) in network meta-analysis (NMA) is becoming increasingly popular. However, as most studies do not report IPD, most NMAs are performed using aggregate data for at least some, if not all, of the studies. We investigate the benefits of including varying proportions of IPD studies in an NMA. Several models have…

Action research is a systematic approach to investigation that enables people to find effective solutions to problems they confront in their everyday lives. A significant feature is that action research lays claim to the professional development in education. Action research as any systematic inquiry conducted by teachers, administrators, and…

The continuously growing demand for program results has produced an increased need for evaluation capacity building (ECB). The "Integrative ECB Model" was developed to integrate concepts from existing ECB theory literature and to structure a synthesis of the empirical ECB literature. The study used a broad-based research synthesis method with…

This study analyzed the reporting of multilevel modeling applications of a sample of 99 articles from 13 peer-reviewed journals in education and the social sciences. A checklist, derived from the methodological literature on multilevel modeling and focusing on the issues of model development and specification, data considerations, estimation, and…

Inferences made in integrative research reviews are as important to the validity of behavioral science knowledge as are those in primary research. The research review is conceptualized as a scientific inquiry involving five stages paralleling those of primary research. Problem formulation is the stage when variables are defined conceptually and…

Three issues must be addressed when discussing the standards needed to judge the methodological rigor of naturalistic approaches to administrative research. The first issue involves defining naturalistic inquiry. In contrast to the scientific paradigm, naturalistic inquiry emphasizes, first, the inseparability of variables or events from their…

Methodological adequacy in naturalistic inquiry is enhanced by understanding the differences between the naturalistic and rationalistic paradigms; by using simultaneous data collection and analysis, with prolonged field research, an audit trail, multiple sources, and referential materials; and by employing "thick description" extensively…

The Werts-Linn procedure for dealing with categorical errors of measurement in "Comments on Boyle's 'Path Analysis and Ordinal Data'" in The American Journal of Sociology, volume 76, number 6, May 1971, is shown to be inappropriate to the problem of ordered categories. (For related document, see TM 002 301.) (DB)

Investigates the structure of information in all sections of the medical research paper. Findings identify an eleven-move schema, out of which nine were found to be "normally required" and two "optional." Each schema was found to embody "constituent elements" and to be characterized by distinct linguistic features. (36 references) (Author/CK)

Describes the application of multilevel statistical models to the evaluation of a multi-site community-based intervention and explicates key issues in the design,analysis, and presentation of results. The initiative described, "Fighting Back, is designed to reduce the demand for illegal drugs and alcohol in a community. (SLD)

A persistent problem in aptitude-treatment interaction (ATI) research has been the need for a better conceptualization of instructional treatments. The concerns are important in the analysis of instructional treatments: the importance of considering the psychological processes called upon by the instructional treatment, and the ecological validity…

The purpose of this paper is to suggest a technique of cluster analysis which is similar in aim to the Interactive Intercolumnar Correlation Analysis (IICA), though different in detail. Two methods are proposed for extracting a single bipolar factor (a "contrast compenent") directly from the initial similarities matrix. The advantages of this…

This document describes the job opportunities forecast system which provides estimates of total job openings expected to be available in the Washington State Labor market annually through 1985. (The forecast has been keyed to occupational skills consistent with educational programs in the state. This edition of the forecast has been expanded to…