Tag Archives: Corrections
Just-identified IV
Gary Solon of Michigan State University pointed out to us that our claim on p. 209 that “just identified 2SLS is median unbiased” is not quite correct and that the claim should be qualified. Gary notes that if the first stage is really zero, the just identified IV estimator is centered at the same point [...]
Typos and mistakes on pages 177 and 183
Careful reader Ian Gow from Stanford caught the following two typos/mistakes: Assumption CA1 on p. 177 should read just like assumption A1 on p. 155, except conditional on X_i (the subscript 0 on Y_0i is incorrect). On p. 183, the para beginning “The size of the group of compliers i given by . . .” [...]
Mistake on page 74
Careful reader Israel Arroyo caught this mistake: Sir, I’m reading the amazing “Mostly Harmless” and I’ve found what I believe to be a typo-though maybe is not and I’m just getting dumber- In Chapter 3, p.74, about the end of 2nd paragraph, it says “[...] regression of Yi on Di and Xi is the same [...]
Josh found a confusing argument on page 67 (how did Steve let this slip in ?!)
The bottom of page 67 discusses proxy control and suggests that if you regress the proxy on the variable of interest (schooling) and find a zero effect, you should be less inclined to worry about the bias from proxy control. This doesn’t make much sense because what we care about when assessing the bias from [...]
Typo on page 174