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Direct linkBarnow, Burt S.; Greenberg, David H. – American Journal of Evaluation, 2020
This paper reviews the use of multiple trials, defined as multiple sites or multiple arms in a single evaluation and replications, in evaluating social programs. After defining key terms, the paper discusses the rationales for conducting multiple trials, which include increasing sample size to increase statistical power; identifying the most…
Descriptors: Evaluation, Randomized Controlled Trials, Experiments, Replication (Evaluation)
MacGowan, Brian J.; Singh, Ajay S.; Overstreet, Bryan; O'Donnell, Michael; Klotz, Heidi; Prokopy, Linda S. – Journal of Extension, 2018
Despite the widespread and long-standing use of demonstration sites in Extension, there is little empirical evidence to inform how best to design them. We report data from 513 producers in three regions of Indiana whom we surveyed about sources of information for farm management decisions, the usefulness of demonstrations, and preferences and…
Descriptors: Opinions, Demonstration Programs, Extension Agents, Program Design
