Economic development, according to the Inter-American Development Bank (IDB), is for people—for citizens. If the benefits of economic growth fail to reach a majority, in the long run there can be no development. Over the past 3 years, Latin America has enjoyed its strongest cycle of economic growth in nearly 30 years. Remarkably, this expansion has been accompanied by low inflation, falling fiscal deficits, and current-account surpluses, and it has occurred amid the most active electoral calendar in the region’s recent history. But conditions for the majority of Latin Americans have not improved substantially. Calls for change are thus being heard again and again. Without change and real improvements in the people’s well-being, the legitimacy of the development effort will continue to be called into question.

Development is a combination of good policies, both macro- and micro-economic. The development of regions such as Southeast Asia, for example, was based largely on the application of numerous microeconomic instruments, backed by stable macro frameworks. In Latin America, despite remarkable achievements at the macro level, we have often neglected the micro dimension of development; we...