Effect sizes have been increasingly emphasized in research as more researchers have recognized that: (1) all parametric analyses (t-tests, analyses of variance, etc.) are correlational; (2) effect sizes have played an important role in meta-analytic work; and (3) statistical significance testing is limited in its capacity to inform scientific…

Including all Head Start research (both published and unpublished) and using, when possible, the statistical technique of meta-analysis, this final report of the Head Start Evaluation, Synthesis, and Utilization Project presents findings on the impact of Head Start on children's cognitive and socioemotional development, on child health and health…

In order to determine what is known about the relationships between father absence, socioeconomic status, race, and children's cognitive performance, a systematic analysis of related literature was undertaken. This study used the quantitative integrative review methodology of meta-analysis, involving transforming the findings of each study to a…

The analyses of J. E. Hunter (1983) were replicated with an expanded data set. The Hunter study, the basis of the Validity Generalization system used by the United States Employment Service, contained 515 General Aptitude Test Battery validation studies. The data set in this study included these and additional studies to bring the data set to 755…

While the aptitude treatment interaction (ATI) approach to educational measurement emphasizes establishing salient learner characteristics, systematic formative evaluation provides ongoing evaluation for instructional program modification. Systematic formative evaluation appears more tenable than ATI for developing individualized instructional…

An analysis of the findings in 70 U.S. and foreign studies that compare male and female students' performance on tests of cognitive functioning was conducted. The studies were reported in various science and psychology journals between 1965 and 1981. Overall, the results showed small but consistent gender differences, with males scoring slightly…

The past 30 years have been a busy time for Catholic school researchers. Once focused almost exclusively on historical research, Catholic school research in recent years has diversified and multiplied to include new descriptive and comparative studies. This article summarizes the findings of the most significant studies from 1966-2002 concerning…

A total of 43 studies, involving 1,703 subjects with a mean age of 6:11, were analyzed to assess the effectiveness of language intervention with language/learning disabled children. Results suggested that the average language-disordered child moved from the 50th percentile to the 85th as a result of language intervention. (Author/JDD)

The meta-analysis by A. C. Willig of bilingual education evaluation literature was not successful in comparison with and did not replicate the Baker and de Kanter narrative review. Willig's conclusion that bilingual education is effective is not supported by the analysis. (SLD)

Computer-based instruction (CBI) studies analyzed by Kulik et al. were examined to explore the validity of competing claims about the computer's contribution to measured achievement gains. Results suggest achievement gains found in CBI studies are overestimated and are due to uncontrolled but robust instructional methods embedded in CBI…

A meta-analysis of the early intervention research literature revealed that early intervention has an immediate positive effect of about on-half of a standard deviation. The analysis failed to find long-term benefits and failed to relate degree of parental involvement to intervention effectiveness. (KH)

In a comprehensive review of the literature containing comparisons between boys and girls on motivation and/or achievement in science, findings were transformed into a common metric and analyzed. It was found that sex differences in both motivation and achievement are smaller than is generally assumed, but they do occur. (Author/BW)

This executive summary describes a study that analyzes the content of early learning standards, operationally defined as documents that articulate expectations for children's development and learning during the preschool period (ages three to five years). Standards from 36 states were collected and analyzed to address the following research…

This report collects the results of all available studies using valid empirical methods to compare segregation in public and private schools, both in general and in the context of school voucher programs. Examining the widespread claims that private schools have high segregation levels and vouchers will lead to greater segregation, this report…

Response cards are a teaching and learning tool designed to increase active student response during whole-class instruction. Response cards allow multiple students to write their answers on a white board and get feedback from the teacher during each learning trial. This work is a quantitative synthesis of the English-language student-level…