This paper discusses the problem of testing misspecifications in semiparametric regression models for a large family of econometric models under rather general conditions on not further specified semiparametric estimators. We focus on mainly three issues that typically arise in econometrics....

This paper introduces a new test of a semiparametric model of a conditional density function against a fully nonparametric alternative. This test is motivated by the fact that many important econometric models need to be estimated through maximum likelihood type procedures, e.g. semiparametric...