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This is easier said than done, however.
These studies exploit natural experiments to measure causal effects, & have been enabled by improved data availability.
kfinlay.github.io/pdf/FinlayNeum…
![](https://pbs.twimg.com/media/DtVcYWlVYAE7crU.jpg)
papers.ssrn.com/sol3/papers.cf…
![](https://pbs.twimg.com/media/DtVcr_0UwAA0Tx1.jpg)
drive.google.com/file/d/18WJH0J…
![](https://pbs.twimg.com/media/DtVdYDkU4AAd7lG.jpg)
docs.google.com/viewer?a=v&pid…
![](https://pbs.twimg.com/media/DtVduhIV4AAu-ey.jpg)
carolinaarteaga.com/job-market-pap…
![](https://pbs.twimg.com/media/DtVeFZPU8AAg0ft.jpg)
dropbox.com/s/kjln6br7ord1…
![](https://pbs.twimg.com/media/DtVejSvUcAA23B1.jpg)
web.stanford.edu/~sitian/sitian…
![](https://pbs.twimg.com/media/DtVe8jTVYAEH5KO.jpg)
nber.org/papers/w24878.…
![](https://pbs.twimg.com/media/DtVfRhIU8AA7jzW.jpg)