TY - BOOK AU - Chernozhukov,Victor AU - Hansen,Gordon AU - Jansson,Michael TI - Admissible invariant similar tests for instrumental variables regression SN - 02664666 AV - HB139.T52 ECO PY - 2009/// CY - Cambridge PB - Cambridge University Press KW - Instrumental variables KW - Statistical test KW - Estimation theory N2 - This paper studies a model widely used in the weak instruments literature and establishes admissibility of the weighted average power likelihood ratio tests recently derived by Andrews, Moreira, and Stock (2004, NBER Technical Working Paper 199). The class of tests covered by this admissibility result contains the Anderson and Rubin (1949, Annals of Mathematical Statistics 20, 46–63) test. Thus, there is no conventional statistical sense in which the Anderson and Rubin (1949) test “wastes degrees of freedom.” In addition, it is shown that the test proposed by Moreira (2003, Econometrica 71, 1027–1048) belongs to the closure of (i.e., can be interpreted as a limiting case of) the class of tests covered by our admissibility result UR - https://doi.org/10.1017/S0266466608090312 ER -