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Rickles, Jordan H. – Evaluation Review, 2011
Many inquiries regarding the causal effects of policies or programs are based on research designs where the treatment assignment process is unknown, and thus valid inferences depend on tenuous assumptions about the assignment mechanism. This article draws attention to the importance of understanding the assignment mechanism in policy and program…
Descriptors: Assignments, Program Evaluation, Academic Achievement, Ability Grouping
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LaFond, Colette; Toomey, Traci L.; Rothstein, Catherine; Wagenaar, Alexander C.; Manning, Willard – Evaluation Review, 2000
Evaluated the accuracy of three methods used to obtain policy data: (1) government surveys; (2) secondary sources; and (3) historical legal research. Findings from a study of changes in state legislation show legal research to be most accurate for established laws, but multistage data best for recent laws. (SLD)
Descriptors: Data Collection, Educational Policy, Educational Research, Evaluation Methods
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Firestone, William A.; Herriott, Robert E. – Evaluation Review, 1983
The histories of five multisite, qualitative policy studies were examined to see how much variation in formalization reflected the technical requirements of the research problem, the demands of the federal client, and the preferences of the project team and its professional network. (Author/PN)
Descriptors: Case Studies, Data Collection, Educational Policy, Ethnography