With the introduction of the monetary union and the single currency in the Gulf Cooperation Council by 2010, the prospective supernational monetary agency will conduct a single and indivisible monetary and exchange policy. Its policies will be based on the GCC-wide economic and financial...

Standard econometric methods can overlook the issue of heterogeneity in corporate policy making, generating biased estimates. We propose ways to identify and address the firm policy heterogeneity bias in practice. In doing so, we introduce a new test determining whether standard firm-fixed...