Laboratory experiments are a widely used methodology for advancing causal knowledge in the physical and life sciences …. With the exception of psychology, the adoption of laboratory experiments has been much slower in the social sciences …, although during the last two decades, the use of lab experiments has accelerated. Nonetheless, there remains considerable …

-American children in the 1960s. We discuss the design of the experiment, compromises in and adjustments to the randomization protocol … approach can be applied to analyze a variety of compromised social and economic experiments, including those using re …

correcting for attrition bias leads to some changes in the precision of estimates, overall the results are quite similar …

Social experiments are powerful sources of information about the effectiveness of interventions. In practice, initial … paper develops tools for analyzing data from experiments as they are actually implemented. We apply these tools to analyze … the influential HighScope Perry Preschool Program. The Perry program was a social experiment that provided preschool …