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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

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Undergraduate and Graduate Preparation in Educational Research Methods
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Barcikowski, Robert S. – Mid-Western Educational Researcher, 2004
The advent of high stakes state testing in K-12 education and The No Child Left Behind Act of 2001, with its focus on "scientifically-based research" (SBR), has opened new challenges for both undergraduate and graduate preparation programs in education. This address will report on how we are currently preparing our undergraduate and graduate…
Descriptors: Graduate Students, Educational Research, Federal Legislation, Research Methodology
Precision Power and Its Application to the Selection of Regression Sample Sizes.
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Brooks, Gordon P.; Barcikowski, Robert S. – Mid-Western Educational Researcher, 1996
Analyzes advantages and disadvantages of methods of selecting sample sizes in multiple regression. Discusses importance of cross-validity to prediction studies. Describes categories of sample size selection methods: cross-validation approaches, rules of thumb, and statistical power methods. Uses multiple examples to present the precision power…
Descriptors: Multiple Regression Analysis, Power (Statistics), Prediction, Predictive Validity
Investigation of Power Using F-Approximations for the Hotelling-Lawley Trace and Pillai's Trace.
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Elliott, Ronald S.; Barcikowski, Robert S. – Mid-Western Educational Researcher, 1994
In multivariate analysis of variance studies with small numbers of subjects (15 or less) per treatment level, probability values reported by the commercial statistical packages SAS and SPSS are conservative for F approximations based on Pillai's trace and liberal for F approximations based on the Hotelling-Lawley trace. Discusses results in terms…
Descriptors: Monte Carlo Methods, Multivariate Analysis, Power (Statistics), Probability