Comment on “Can Nonrandomized Experiments Yield Accurate Answers? A Randomized Experiment Comparing Random and Nonrandom Assignments”

Little, Roderick J; Long, Q; Lin, X. (2008). Comment on "Can Nonrandomized Experiments Yield Accurate Answers? A Randomized Experiment Comparing Random and Nonrandom Assignments". Journal of the American Statistical Association. 103(484), 1344-1346.