In an attempt to improve the quality of educational research, the US Department of Education's Institute of Education Sciences has provided funding for 65 randomized controlled trials of educational interventions. We argue that this research methodology is more effective in providing guidance to...

The placebo-controlled, double-blind, randomized clinical trial (RCT) holds unique advantages for evaluating medical technologies, and figures prominently in clinical drug investigations. However, medicine, like other social sectors, has experienced a movement toward evidence-based practice and...