patterns of firms within the same sector. Helpman, Melitz and Yeaple (2005) develop a model in which innate productivity … allows us to compare productivity over the entire distribution. Our results show robust support for the prediction from …

explains the concept of panel unit roots and panel cointegration and introduces the underlying empirical approach. Next … employs a panel data technique is used. This estimator is suited for integrated annual macroeconomic panel data sets to …

. For these purposes, panel unit root tests are employed to improve power against univariate counterparts. Since cross … section correlation is a distinct feature of the underlying panel data, results are based on various second generation panel …-stationarity of hours worked. In addition, taking these results together, there is no indication of cointegration among the individual …

as well as pooled mean group and mean group estimators, the latter in a dynamic heterogeneous panel framework. We find … support for a dynamic estimation setup and derive statements regarding the homogeneity assumption with respect to the three … most prominent explanatory variables in the literature: the capital-output ratio, total factor productivity and trade …