“Randomization in such studies is arguably a negative, in practice, in that it gives apparently ironclad causal identification (not really, given the ultimate goal of generalization), which just gives researchers and outsiders a greater level of overconfidence in the claims.”

Dean Eckles sent me an email with subject line, “Another Perry Preschool paper …” and this link to a recent research paper that reports, “We find statistically significant effects of the program on a number of different outcomes … Continue reading → …