Understanding the economic and social effects of the recent global trends of rising market concentration and market power has become a policy priority. To fill this knowledge gap, this paper introduces a simple simulation method, the Welfare and Competition tool (WELCOM), to estimate with...

As the financial crisis has spread through the world, the lack of real-time data has made it difficult to track its impact in developing countries. We use a microsimulation approach to assess the poverty and distributional effects of the crisis. In Bangladesh, Mexico, and the Philippines, we...