The Impact of Microcredit on the Poor in Bangladesh: Revisiting the Evidence

David Roodman and Jonathan Morduch

No 174, Working Papers from Center for Global Development

Abstract: The most-noted studies on the impact of microcredit on households are based on a survey fielded in Bangladesh in the 1990s. Contradictions among them have produced lasting controversy and confusion. Pitt and Khandker (PK, 1998) apply a quasi-experimental design to 1991–92 data; they conclude that microcredit raises household consumption, especially when lent to women. Khandker (2005) applies panel methods using a 1999 resurvey; he concurs and extrapolates to conclude that microcredit helps the extremely poor even more than the moderately poor. But using simpler estimators than PK, Morduch (1999) finds no impact on the level of consumption in the 1991–92 data, even as he questions PK’s identifying assumptions. He does find evidence that microcredit reduces consumption volatility. Partly because of the sophistication of PK’s Maximum Likelihood estimator, the conflicting results were never directly confronted and reconciled. We end the impasse. A replication exercise shows that all these studies’ evidence for impact is weak. As for PK’s headline results, we obtain opposite signs. But we do not conclude that lending to women does harm. Rather, all three studies appear to fail in expunging endogeneity. We conclude that for non-experimental methods to retain a place in the program evaluator’s portfolio, the quality of the claimed natural experiments must be high and demonstrated.

Keywords: microcredit; impact evaluation; Grameen Bank; Bangladesh; replication; mixed-process models (search for similar items in EconPapers)
JEL-codes: C21 C23 C24 C25 O12 O16 (search for similar items in EconPapers)
Pages: 47 pages
Date: 2009-06
New Economics Papers: this item is included in nep-dev and nep-mfd
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Citations: View citations in EconPapers (86)

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Journal Article: The Impact of Microcredit on the Poor in Bangladesh: Revisiting the Evidence (2014)
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Persistent link: https://EconPapers.repec.org/RePEc:cgd:wpaper:174

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