Welcome to this week’s episode of the Mixtape with Scott where I get to interview Bruce Sacerdote, the Richard S. Braddock 1963 Professor in Economics at Dartmouth. Bruce is a prolific labor economist whose work spans the range of crime, education and peer effects. Some of his papers have been some of my favorite, even. His early work on crime with Ed Glaeser used to really interest me. But it was his work on peer effects that I found really fascinating. This old paper in the QJE about how friendships form I must have read almost 20 years and it still sticks in my head.

I think Bruce, though, was one of the first people that I ever encountered after graduating that was very clearly part of this credibility revolution. His papers, if it used instruments, typically would use lotteries as instruments. Or if he was studying peer effects, it was lotteries. Well, not surprisingly, Bruce was there at Harvard as a PhD student in the first class that Imbens co-taught with Don Rubin on causal inference. His classmates in that class were Rajeev Dehejia and Sadek Wahba, authors of classic applied papers on the propensity score. In fact, Bruce’s own project for that class was also published — a paper estimating the causal effect of winning lottery prizes on labor market outcomes (published in the 2001 AER). So this was fun, and I hope you enjoy it too. Apologies I ramble for so long at the start. Not sure what got into me.

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