Esther Duflo
As most people in any empirical or scientific field know, the gold standard for experimenting and establishing causality is the randomized controlled trial (RCT). In an RCT, subjects are randomly assigned to one of two conditions: an experimental group or a control group. The experimental group receives the intervention or drug and the control group receives standard care or a placebo (basically, the equivalent of the status quo). The idea behind the randomized controlled trial is to control the circumstances surrounding the experimental question as much as possible. This allows researchers…