【正文】
Buntin, 1997), and smallscale programs now operate in 300 . sites (Economist, 1997). The New York Times (1997) has celebrated this “muchneeded revolution in antipoverty programs” and called for enhanced support. But how great is the ultimate impact on poor households? While strong claims are made for the ability of microfinance to reduce poverty, only a handful of studies use sizeable samples and appropriate treatment/control frameworks to answer the question. The present study investigates a 199192 crosssectional survey of nearly 1800 households in Bangladesh served by microfinance programs of the Grameen Bank, the Bangladesh Rural Advancement Committee (BRAC), and the Bangladesh Rural Development Board (BRDB). The sample also includes a control group of households in areas not served by any microfinance programs. The three lending programs considered here together serve over four million poor clients in Bangladesh, but their role is much broader. The Grameen Bank is the flagship of the international microfinance movement, and its model has now been replicated on four continents, including sites in the United States as varied as rural Arkansas and innercity Chicago. Simple estimates of impacts show clear achievements. For example, if households served by the Grameen Bank are ordered by the amounts they have borrowed from the program, the top quarter enjoys 15% higher consumption per capita than households in the bottom quarter. In addition, 62% of the schoolage sons of Grameen Bank borrowers are enrolled in school versus 34% of the sons of eligible households that do not borrow. For daughters, the Grameen advantage is 55% versus 40%. These simple parisons appear to be driven entirely by selection biases, however. Once appropriate parisons with control groups are made, access to the three microfinance programs does not yield meaningful increases in per capita consumption, the education of sons, nor the education of daughters. If anything, the levels are slightly lower than for control groups. The results are surprising and contradict frequent claims made about the programs in international discussions of microfinance. Access to the programs does, however, appear to aid the diversification of labor supply across seasons. In turn, access is associated with a reduction in the variability of consumption across seasons. Thus, while the programs may not increase consumption on average, they may offer