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Download full textLipsey, Mark W.; Puzio, Kelly; Yun, Cathy; Hebert, Michael A.; Steinka-Fry, Kasia; Cole, Mikel W.; Roberts, Megan; Anthony, Karen S.; Busick, Matthew D. – National Center for Special Education Research, 2012
This paper is directed to researchers who conduct and report education intervention studies. Its purpose is to stimulate and guide them to go a step beyond reporting the statistics that emerge from their analysis of the differences between experimental groups on the respective outcome variables. With what is often very minimal additional effort,…
Descriptors: Intervention, Experimental Groups, Statistical Significance, Researchers
National Center for Education Statistics, 2010
The National Assessment of Educational Progress (NAEP) is a continuing and nationally representative assessment of what this nation's students know and can do. NAEP has often been called the "gold standard" of assessments because it is developed using the best thinking of assessment and content specialists, education experts, and…
Descriptors: National Competency Tests, Evaluation, Academic Achievement, Educational Improvement
Mahadevan, Lakshmi – 2000
Over the years, methodologists have been recommending that researchers use magnitude of effect estimates in result interpretation to highlight the distinction between statistical and practical significance (cf. R. Kirk, 1996). A magnitude of effect statistic (i.e., effect size) tells to what degree the dependent variable can be controlled,…
Descriptors: Data Analysis, Effect Size, Measurement Techniques, Meta Analysis
Peer reviewedFagley, N. S. – Journal of Counseling Psychology, 1985
Although the primary responsibility rests with the authors of articles reporting nonsignificant results to demonstrate the worth of the results by discussing the power of the tests, consumers should be prepared to conduct their own power analyses. This article demonstrates the use of power analysis for the interpretation of nonsignificant…
Descriptors: Hypothesis Testing, Power (Statistics), Research Design, Research Methodology
Peer reviewedGoodwin, Laura D.; Goodwin, William L. – Journal of Early Intervention, 1989
This article explains and illustrates the estimation of the power of statistical tests used to analyze data in early childhood special education research, and discusses advantages and disadvantages of various ways to increase power, such as using a directional alternate hypothesis or using a parametric, rather than nonparametric, statistical test.…
Descriptors: Disabilities, Early Childhood Education, Educational Research, Hypothesis Testing
Direct linkOnwuegbuzie, Anthony J.; Leech, Nancy L. – Qualitative Report, 2004
The present essay outlines how mixed methods research can be used to enhance the interpretation of significant findings. First, we define what we mean by significance in educational evaluation research. With regard to quantitative-based research, we define the four types of significance: statistical significance, practical significance, clinical…
Descriptors: Evaluation Research, Statistical Significance, Qualitative Research, Statistical Analysis
