In this paper we propose a simple extension to the panel case of the covariate-augmented Dickey Fuller (CADF) test for unit roots developed in Hansen (1995). The extension we propose is based on a p-values combination approach that takes into account cross-section dependence. We show that the...

This paper aims to investigate the long-run relationship between crime, inequality, unemployment and deterrence using state-level data for the US over the period 1978-2013. The novelty of the paper is to use non-stationary panels with factor structures. The results show that: i) a simple crime...