We consider the problem of consistent estimation of nonlinear models with mismeasured explanatory variables, when marginal information on the true values of these variables is available. The marginal distribution of the true variables is used to identify the distribution of the measurement...

We develop tests for the presence of common value components in bidders' valuations at symmetric first-price sealed bid auctions. These tests are fully nonparametric and require observations only of the bids submitted at each auction. The main principle of the test relies on the observation that...