In this paper we propose a class of nonparametric tests for anomaly effects in empirical asset pricing models in the framework of nonparametric panel data models with interactive fixed effects. Our approach has two prominent features: one is the adoption of nonparametric component to capture the...

The growth rate of temporary help service employment is often considered to be a leading business cycle indicator, because the firing and hiring of temporary help workers typically lead that of permanent workers. However, few works in the literature focus on the mechanism that generates the lag...

This paper studies estimation of a panel data model with latent structures where individuals can be classified into different groups where slope parameters are homogeneous within the same group but heterogeneous across groups. To identify the unknown group structure of vector parameters, we...