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ERIC Number: EJ1024071
Record Type: Journal
Publication Date: 2013
Pages: 25
Abstractor: As Provided
Reference Count: 36
ISBN: N/A
ISSN: ISSN-1934-5747
From Planning to Implementation: An Examination of Changes in the Research Design, Sample Size, and Precision of Group Randomized Trials Launched by the Institute of Education Sciences
Spybrook, Jessaca; Puente, Anne Cullen; Lininger, Monica
Journal of Research on Educational Effectiveness, v6 n4 p396-420 2013
This article examines changes in the research design, sample size, and precision between the planning phase and implementation phase of group randomized trials (GRTs) funded by the Institute of Education Sciences. Thirty-eight GRTs funded between 2002 and 2006 were examined. Three studies revealed changes in the experimental design. Ten studies showed decreases in the total number of groups randomized, whereas 18 studies showed increases. In five cases, the decreases in the number of groups randomized were large enough to decrease the precision of the study. However, in the majority of the studies, the precision was relatively unchanged from planning phase to implementation phase. The consistency in the precision between the planning phase and implementation phase highlights the importance of planning adequately powered studies.
Routledge. Available from: Taylor & Francis, Ltd. 325 Chestnut Street Suite 800, Philadelphia, PA 19106. Tel: 800-354-1420; Fax: 215-625-2940; Web site: http://www.tandf.co.uk/journals
Publication Type: Reports - Research; Information Analyses; Journal Articles
Education Level: Elementary Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Laws, Policies, & Programs: Elementary and Secondary Education Act; No Child Left Behind Act 2001