Studies designed to assess the efficacy of programs. They may include the evaluation of cost-effectiveness, the extent to which objectives are met, or impact
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Social Validity, Research. : Validity in survey research : with special reference to the techniques of intensive interviewing and progressive modification for testing and constructing difficult or sensitive measures for use in survey research : a report / by William A. Belson ; based upon research under the direction and control of William Belson ; with participation by J.G. Cleland ... [and others]
