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Rose, Roderick A.; Bowen, Gary L. – Social Work Research, 2009
In cluster-randomized trials (CRTs) of social work interventions, groups are assigned to treatment conditions. Conducting a power analysis ensures that enough groups are sampled for testing hypotheses. The power analysis method and inputs must be informed by the hypotheses, effects to be tested, and the data analysis plans. The authors present a…
Descriptors: Research Design, Intervention, Heuristics, Statistical Analysis
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McDermott, Mark A.; Hand, Brian – Journal of Research in Science Teaching, 2010
This study aims to add to the growing research related to the implementation of non-traditional writing tasks in classrooms to encourage science literacy. A secondary reanalysis methodology was employed to review student interviews collected as a part of several individual studies during a ten year research program. This method established an…
Descriptors: Foreign Countries, Scientific Literacy, Transcripts (Written Records), Coding