"The "developing world's middle class" is defined here as those who are not poor when judged by the median poverty line of developing countries, but are still poor by US standards. The "Western middle class" is defined as those who are not poor by US standards. Although barely 80 million people...

The 'developing world's middle class' is defined here as those who are not poor when judged by the median poverty line of developing countries, but are still poor by US standards. The 'Western middle class' is defined as those who are not poor by US standards. Although barely80 million people in...

The "developing world's middle class" is defined here as those who are not poor when judged by the median poverty line of developing countries, but are still poor by US standards. The "Western middle class" is defined as those who are not poor by US standards. Although barely 80 million people...

Western notions of the 'middle class' are of little obvious relevance to developing countries. Instead, the middle class is identified here as those living above the median poverty line of developing countries, even if still poor by rich-country standards. Over 1990-2005, economic growth and...

This paper provides an overview of the history of development research at the World Bank and points to new future directions in both what we research and how we research. Six main messages emerge. First, research and data have long been essential elements of the Bank's country programs and its...