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Beretvas, S. Natasha – School Psychology Quarterly, 2005
This paper details the challenges encountered by authors summarizing evidence from a primary study to describe a treatment's effectiveness using an effect size (ES) estimate. Dilemmas that are encountered, including how to calculate and interpret the pertinent standardized mean difference ES for results from studies of various research designs,…
Descriptors: Effect Size, Research Methodology, Computation, Data Interpretation
D'Amico, Joseph J.; Dawson, Judith A. – 1985
In 1981, the developers of a school-based change effort engaged researchers to conduct an evaluation study employing qualitative methodology that would provide the developers with information that could be used to improve the program. Resource constraints, short timelines, and the developers' preference for useable information encouraged…
Descriptors: Adoption (Ideas), Cooperative Programs, Data Analysis, Data Collection