Tag Archives: Reader Comments
Imbens and Angrist Discover LATE
… in the the Andean foothills, Chile, November 2011
Covariate Contradiction?
Thoughtful reader Nikhil from UBC asks: I had a question regarding LATE. In your book you say in a model with covariates, 2SLS leads to a sort of "covariate averaged LATE" even when one does not have a saturated model. Does this mean that as one introduces covariates the 2SLS estimator is most likely to [...]
Why are There So Many Dummies?
Lina from Essex writes: When talking about grouped data and 2SLS (section 4.1.3) you mention that expanding a continuous instrument is equivalent to have a set of Wald estimators that consistent estimates the causal effect of interest and in the Vietnam paper you mention that using the whole set of dummies as instruments is more [...]
Regression what?!
Matt from Western Kentucky U comments on Chapter 3. . . Question: You state: “Our view is that regression can be motivated as a particular sort of weighted matching estimator, and therefore the differences between regression and matching estimates are unlikely to be of major empirical importance” (Chapter 3 p. 70) I take this to [...]
High Fashion at the Spring Meeting of Young Economists
as seen at the University of Groningen . . .what a good-lookin crew! what are they spelling? I wish I knew
good eye!
Hui Cao from China caught this one . . . and it’s in the “corrected printing” to boot! On 6/21/11 12:44 PM, 晖 曹 wrote: On page 75: [p(Xi=x|Di=1)(1-p(Xi=x|Di=1)] should be [p(Di=1|Xi=x)(1-P(Di=1|Xi=x)} Yes indeed!
MHE at 12000 feet
Andrea Ichino takes the RD message to new heights (specifically, to Cime Nere in Italian, as Andrea would like it; Hintere Schwarze in German – the peak straddles the Italian-Austrian border 3624m)
Twin Econometricians!
Here’s a pair of the cutest econometricians we have ever seen, helpin’ their mama (Daniela Vuri) run regressions every day
QOB Qonfusion