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Direct linkHedges, Larry V.; Schauer, Jacob M. – Journal of Educational and Behavioral Statistics, 2019
The problem of assessing whether experimental results can be replicated is becoming increasingly important in many areas of science. It is often assumed that assessing replication is straightforward: All one needs to do is repeat the study and see whether the results of the original and replication studies agree. This article shows that the…
Descriptors: Replication (Evaluation), Research Design, Research Methodology, Program Evaluation
Hedges, Larry V.; Schauer, Jacob M. – Grantee Submission, 2019
The problem of assessing whether experimental results can be replicated is becoming increasingly important in many areas of science. It is often assumed that assessing replication is straightforward: All one needs to do is repeat the study and see whether the results of the original and replication studies agree. This article shows that the…
Descriptors: Replication (Evaluation), Research Design, Research Methodology, Program Evaluation
Hedges, Larry V.; Pustejovsky, James E.; Shadish, William R. – Research Synthesis Methods, 2013
Single-case designs are a class of research methods for evaluating treatment effects by measuring outcomes repeatedly over time while systematically introducing different condition (e.g., treatment and control) to the same individual. The designs are used across fields such as behavior analysis, clinical psychology, special education, and…
Descriptors: Effect Size, Research Design, Research Methodology, Behavioral Science Research
Hedges, Larry V. – Journal of Educational and Behavioral Statistics, 2007
Multisite research designs involving cluster randomization are becoming increasingly important in educational and behavioral research. Researchers would like to compute effect size indexes based on the standardized mean difference to compare the results of cluster-randomized studies (and corresponding quasi-experiments) with other studies and to…
Descriptors: Journal Articles, Effect Size, Computation, Research Design
Hedges, Larry V.; Konstantopoulos, Spyros; Thoreson, Amy – 2000
The purpose of this study was to examine patterns of computer use in U.S. schools and the relation of computer use to academic achievement in mathematics, reading, and writing. The report discusses methodological issues and presents the results of analyses of the social distribution of computer use and the relation of computer use to academic…
Descriptors: Academic Achievement, Computer Uses in Education, Elementary Secondary Education, National Surveys
Giaconia, Rose M.; Hedges, Larry V. – 1981
To relate the design of open education programs to their outcomes, the authors surveyed 72 research studies on the effects of open education and examined the methods and findings of three previous literature surveys on this topic. The 72 studies were divided by an objective statistical test into those showing large effects of open education and…
Descriptors: Creativity, Elementary Secondary Education, Open Education, Outcomes of Education
