Splash! Robustifying Donor Pools for Policy Studies

Jared Amani Greathouse, Mani Bayani and Jason Coupet

Papers from arXiv.org

Abstract: Policy researchers using synthetic control methods typically choose a donor pool in part by using policy domain expertise so the untreated units are most like the treated unit in the pre intervention period. This potentially leaves estimation open to biases, especially when researchers have many potential donors. We compare how functional principal component analysis synthetic control, forward-selection, and the original synthetic control method select donors. To do this, we use Gaussian Process simulations as well as policy case studies from West German Reunification, a hotel moratorium in Barcelona, and a sugar-sweetened beverage tax in San Francisco. We then summarize the implications for policy research and provide avenues for future work.

Date: 2023-08
New Economics Papers: this item is included in nep-ecm
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