Purpose: This paper aims to analyze the differences in the efficiency of public accounting firms across both firms and countries in the post-Sarbanes-Oxley world. It also investigates the issues surrounding the dynamics of their efficiency gaps. Design/methodology/approach: This study uses...

Purpose – Seeks to analyze the role of population and wealth in determining capital movements between countries. Design/methodology/approach – By applying the Clark‐Jokung 50 percent portfolio theorem, considers the specific case of a two country world where the cumulative conditional...