Titlebook: Credibility, Validity, and Assumptions in Program Evaluation Methodology; Apollo M. Nkwake Book 2015 Springer International Publishing Swi

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about the credibility of evidence and the methodologies and methods used to generate it. Justifying the appropriateness of methods and explaining assumptions about their validity is a critical part of methodological credibility. Validity comes from the accuracy of methods in depicting reality and th

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or taken for granted. The first stage is defining the evaluation purpose and choosing questions to guide the collation of the data on the program‘s success. The purpose guides evaluators in conceptualizing questions that bridge the evaluation purpose and the methods by which the questions are answer

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ons prioritized in the previous phase. These decisions involve a lot of operationalizations, including translating stakeholder information needs into more specific evaluation questions. The determination of appropriate evaluation designs and methods, as well as strategies for sampling, data collecti

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Kredit und Tilgungsversprechen,utputs, outcomes, and impacts. This information enables stakeholders to take timely corrective action and increase the likelihood for program success. Effective performance measurement largely depends on the use of appropriate indicators. Indicators are operationalization of program results (outcome

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,Geld-Akzeptanz und W?hrungsgeld,ptions and how this elaboration of assumptions is visible in evaluation reports (articles). Overall, the assumptions and preconditions examined in determining evaluation designs pertain mostly to internal and construct validity and they are mostly discussed as potential sources of bias or limitation

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