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1 vote

Is there any downside to synthetic control compared to differences-in-differences model?

I wouldn't say the assumption is "satisfied by construction". Parallel trends prior to treatment time is satisfied by construction, but the assumption is that the trend in the synthetic ...
Michael Gmeiner's user avatar
0 votes

Variable dropped for collinearity in feols package in R (TWFE)

When you include country fixed effects $\alpha_i$ in your model you include a dummy variable for each country. However, you cannot have a dummy variable for each $i$, and still identify the ...
Jesper Hybel's user avatar
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2 votes

Difference between unconfoundedness and parallel trends

You're pretty much correct - the two assumptions are very similar. The only difference is that the Parallel Trends assumption allows for differences between the treatment group and the control group (...
matthewoulton's user avatar
1 vote

Random Utility Model Multiple Choice Question. Which one is correct?

I believe the correct answer is (C). Both coefficients are identifiable. The cross-sectional variation identifies the alternative-specific coefficients. It is probably easiest to see why if you assume ...
Jesper Hybel's user avatar
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