This paper studies inference performance of Instrumental Variables Estimators in situations where error terms are heteroskedastic and there are many instruments. In particular, performance of a estimator proposed by Hausman, Newey, Woutersen, Chao, and Swanson (2007) with the robust version of JIVE -proposed by Angrist, Imbens and Krueger (1999)- is analyzed. Theoretical results are presented for the robust t-statistics, which is mostly affected by the finite-sample bias of the estimator.
Download Info
To download:
If you experience problems downloading a file, check if you have the
proper application to
view it first. Information about this may be contained
in the File-Format links below. In case of further problems read
the IDEAS help
file. Note that these files are not on the IDEAS
site. Please be patient as the files may be large.