Purpose – The purpose of this study is to analyze the potential existence of a concave downward curve between organizational commitment to employees (OCE) and labor productivity in small firms. It also aims to examine the moderating effects of labor intensity on this curvilinear relationship....

Panel data can be arranged into a matrix in two ways, called 'long' and 'wide' formats (LF and WF). The two formats suggest two alternative model approaches for analyzing panel data: (i) univariate regression with varying intercept; and (ii) multivariate regression with latent variables (a...

The present paper proposes a model for the persistence of abnormal returns both at firm and industry levels, when longitudinal data for the profits of firms classiffied as industries are available. The model produces a two-way variance decomposition of abnormal returns: (a) at firm versus...