The Econometric SocietyEdited by: Marina Halac • Print ISSN: 0012-9682 • Online ISSN: 1468-0262
Econometrica: May, 2024, Volume 92, Issue 3
https://doi.org/10.3982/ECTA20819
p. 913-924
Benedikt M. Pötscher, David Preinerstorfer
We show that Theorem 4 in Hansen (2022) applies to exactly the same class of estimators as does the classical Aitken theorem. We furthermore point out that Theorems 5–7 in Hansen (2022) contain extra assumptions not present in the classical Gauss–Markov or Aitken theorem, and thus the former theorems do not contain the latter ones as special cases.
December 11, 2025
We are deeply saddened by the passing of Kate Ho, the John L. Weinberg Professor of Economics and Business Policy at Princeton University and a Fellow of the Econometric Society. Kate was a brilliant IO economist and scholar whose impact on the profession will resonate for many years to come.
