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Westine, Carl D. – American Journal of Evaluation, 2016
Little is known empirically about intraclass correlations (ICCs) for multisite cluster randomized trial (MSCRT) designs, particularly in science education. In this study, ICCs suitable for science achievement studies using a three-level (students in schools in districts) MSCRT design that block on district are estimated and examined. Estimates of…
Descriptors: Efficiency, Evaluation Methods, Science Achievement, Correlation
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Brandon, Paul R.; Harrison, George M.; Lawton, Brian E. – American Journal of Evaluation, 2013
When evaluators plan site-randomized experiments, they must conduct the appropriate statistical power analyses. These analyses are most likely to be valid when they are based on data from the jurisdictions in which the studies are to be conducted. In this method note, we provide software code, in the form of a SAS macro, for producing statistical…
Descriptors: Statistical Analysis, Correlation, Effect Size, Benchmarking
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Flygare, Erik; Gill, Peter Edward; Johansson, Bjorn – American Journal of Evaluation, 2013
Sweden has a low prevalence of bullying and Swedish schools are legally obliged to have anti-bullying policies. Many commercial programs are available. A mixed methods, quasi-experimental, concurrent evaluation of 8 programs, chosen from a pool of 21 widely used anti-bullying programs, was planned. Preliminary data, based on 835 stakeholder…
Descriptors: Intervention, Questionnaires, Bullying, Foreign Countries
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Henry, Gary T.; Smith, Adrienne A.; Kershaw, David C.; Zulli, Rebecca A. – American Journal of Evaluation, 2013
Performance-based accountability along with budget tightening has increased pressure on publicly funded organizations to develop and deliver programs that produce meaningful social benefits. As a result, there is increasing need to undertake formative evaluations that estimate preliminary program outcomes and identify promising program components…
Descriptors: Formative Evaluation, Program Evaluation, Program Effectiveness, Longitudinal Studies
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Cooksy, Leslie J. – American Journal of Evaluation, 2007
All evaluators face the challenge of striving to adhere to the highest possible standards of ethical conduct. Translating the AEA's Guiding Principles and the Joint Committee's Program Evaluation Standards into everyday practice, however, can be a complex, uncertain, and frustrating endeavor. Moreover, acting in an ethical fashion can require…
Descriptors: Program Evaluation, Evaluators, Ethics, Evaluation Methods