The evaluation of government-financed research has become increasingly important in the last few decades in terms of increasing the quality of, and payoff from, the research that is done, reducing the cost of doing it, and lending public credibility to the manner in which research is funded. But there are very large differences throughout the…

The Randomized Control Trials (RCT) design and its quasi-experimental kissing cousin, the Comparison Group Trials (CGT), are golden to some and not even silver to others. At the center of the affection, at the vortex of the discomfort, are beliefs about what it takes to establish causality. These designs are considered primarily when the purpose…