A meta-analytic study on effectiveness of behavioral and psychotherapeutic treatments for challenging behaviors in individuals with mild mental retardation is reported. Eighty articles were examined. For each comparison, several study variables and two effect sizes (percentage of nonoverlapping data--PND and percentage of zero data--PZD) were…

This article explores the state of skills development for smaller enterprises in South Africa through a consideration of two recent empirical studies of very small and micro enterprises (VSMEs--those with 2-10 employees). It provides new evidence about the complexity of the VSME sector and the mixed performance of state attempts to engage with it…

This meta-analysis reviews experimental and quasi-experimental studies in which students learned by constructing, modifying, or viewing node-link diagrams. Following an exhaustive search for studies meeting specified design criteria, 67 standardized mean difference effect sizes were extracted from 55 studies involving 5,818 participants. Students…

There is increasingly negative sentiment against IQ-achievement discrepancy as a method to identify children with learning disabilities (LD) and, more broadly, intelligence as an explanation of poor academic performance. The evidence for this latter view was examined by reviewing 13 studies involving 1,542 children who were at risk or reading…

This meta-analysis offers decision-makers research-based guidance for intervening with adolescent struggling readers. The authors outline major implications for practice: (1) Adolescence is not too late to intervene. Interventions do benefit older students; (2) Older students with reading difficulties benefit from interventions focused at both the…

Numerous theories have attempted to explain possible factors relating to an individual's propensity for engaging or failing to engage in preventative health behaviors. The Health Locus of Control (HLOC) is now considered to be an important variable for understanding an individual's likelihood for following health promoting behaviors. This paper…

As part of the efforts of the Office of Educational Research and Improvement (OERI) in support of the national goals for education (America 2000), staff members are cataloguing and synthesizing research to connect it to federal practice. This paper presents the basic argument that synthesizing research and translating it into practice-oriented…

Some methodological issues in the study of levels of knowledge are reviewed, and needs for further research are explored, drawing on an analysis of 12 studies reported since the late 1970s. In the 12 studies, 16 quantitative experiments were conducted. These were assessed for internal and external validity. Analysis revealed some shortcomings in…

This report examines the limitations of research that has been conducted on the effects of retention and social promotion. It reexamines seven research studies that provide strong evidence based on strong methodology that includes the following three characteristics: (1) the studies identify the basis of comparison, that is, whether they are…

Currently available measures of self-efficacy described in educational and psychological research literature were cataloged and reviewed after a literature search. To identify and locate these measures, searches of "Psychological Abstracts" and the ERIC system were conducted using self-efficacy and related keywords. Results of the…

Literature on mastery learning (ML) is reviewed from the perspectives of past efforts, current approaches, and future directions. To date, approaches in managing the ML literature have been in four major areas: (1) the "typing" of ML efforts in the context of a comprehensive literature review; (2) the compilation of state-of-the-art bibliographies…

This bibliography lists reports of research on problem solving in mathematics, with specific regard to experiments, correlations, and other regional studies. The listing supports a research integration, performed by meta-analysis at Adrian College, Michigan, in 1989-1990. Guidelines for including studies were applied as follows: (1) the study…

The report, which is part of a series, provides an analysis of approximately 100 documents focusing on education, employment, and independent living outcomes across 10 handicapping conditions, including those students considered to be disadvantaged. Document summaries are organized by the 3 outcome areas and 11 conditions (learning disabled,…

This article presents a quantitative synthesis of examiner familiarity effects on Caucasian and minority students' test performance. Fourteen controlled studies were coded in terms of methodological quality (high vs. low) and race-ethnicity (Caucasian vs. Black and Hispanic). An analogue to analysis of variance conducted on weighted unbiased…

Preliminary findings of an analysis of Head Start research evidence amassed from 1965 to the present are reported in this document, along with a summary of conclusions from related studies of preschool programs. Specifically presented are long-term findings of the Consortium for Longitudinal Studies concerning the lasting benefits of preschool…