The most effective regulators in developing countriesare following remarkably similar approaches. The main common element across"best practice"countries is the use of relatively simple quantitative models of operators'behavior and constraints to measure the impact of regulatory decisions on some...

Case studies and anecdotal evidence have suggested that uncertainty about policies, laws, and regulations has hampered development of the private sector in many developing countries. The authors present results from a new cross-country survey that provides comparable data on local...