External Validity

Generalizing Experimental Results

Experiments have come to be a widely accepted and highly regarded method for political science research. Randomization allows for well identified causal effects that are "internally valid" to the experimental setting. However, political scientists are driven by asking big questions with broad impacts...

Elements of External Validity: Framework, Design, and Analysis

External validity of randomized experiments is a focus of long-standing debates in the social sciences. While the issue has been extensively studied...

Covariate Selection for Generalizing Experimental Results: Application to Large-Scale Development Program in Uganda

Scientists are often interested in generalizing causal effects estimated in an experiment to a target population. However, analysts are often constrained by available covariate information...

From SATE to PATT: combining experimental with observational studies to estimate population treatment effects

Randomized controlled trials (RCTs) can provide unbiased estimates of sample average treatment effects. However, a common concern is that RCTs may fail to provide unbiased estimates of population average treatment effects. We derive assumptions...