In this paper, we consider a specification testing problem in nonlinear time series models with nonstationary regressors and propose using a nonparametric kernel-based test statistic. The nullasymptotics for the proposed nonparametric test statistic have been well developed in the existing...

Via the leading unit root case, the problem of testing on a lagged dependent variable is characterized by a nuisance parameter which is present only under the alternative (see Andrews and Ploberger (1994)). This has proven a barrier to the construction of optimal tests. Moreover, in their...

This paper addresses the problem of point identification in the presence of measurement error in discrete variables; in particular, it considers the case of having two “noisy†indicators of the same latent variable and without any prior information about the true value of the variable...

This paper presents difference-in-differences estimates of the impact of the British minimum wage on the wage growth of low-wage employees. Estimates of the probability of low-wage employees receiving positive wage growth have been significantly increased by the minimum wage upratings or hikes....

In Germany, employees are generally obliged to participate in the public health insurance system, where coverage is universal, co-payments and deductables are moderate, and premia are based on income. However, they may buy private insurance instead if their income exceeds the compulsory...