Conventional wisdom says that the middle classes in many developed countries have recently suffered losses, in terms of both the share of the total population belonging to the middle class, and also their share in total income. Here, distribution-free methods are developed for inference on these...

We study the finite-sample properties of tests for overidentifying restrictions in linear regression models with a single endogenous regressor and weak instruments. Under the assumption of Gaussian disturbances, we derive expressions for a variety of test statistics as functions of eight...

The current study investigates the effects of employee empowerment (EE) and work environment on Employee-Perceived Service Quality (EPSQ) and investigate the role of supportive leadership behavior (SLB) as a moderator. Particularly, the study addressed the mediating effect of job satisfaction...