Adam Clark (@adam_t_clark) 's Twitter Profile
Adam Clark

@adam_t_clark

Associate Professor at University of Graz in Austria. Used as a work account for discussing my research & related topics. 🐘 @[email protected].

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linkhttp://adamclarktheecologist.com calendar_today18-09-2013 17:23:06

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Adam Clark
@adam_t_clark

a year ago

Looks like a cool paper! General question about DID: does it assume linearity (or at least a known functional form)? E.g. if y = {2,4} and x = {3,9} for times 1 & 2, then DID is (9-4)-(3-2) = 4 - so, maybe a treatment effect, or just a nonlinear function, e.g. f(t+1) = f(t)^2.