Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Dahl and Lochner (2012) provides some of the first causal evidence of the effects of family income on child achievement using changes in the Earned Income Tax Credit. Unfortunately, a coding error in the creation of total family income affects the first stage estimates and inflates the instrumental variable (IV) estimates. Importantly, it does not affect the reduced-form estimates or alter statistical significance of the IV estimates. This response shows that correcting this error does not alter the core findings or main message of the paper.