Michael Callen

Eli Berman12
Craig Mcintosh10
Christopher Woodruff9
12Eli Berman
10Craig Mcintosh
9Christopher Woodruff
6James D Long
6Leonardo Bursztyn
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  • Surech De Mel, David Mckenzie, Christopher Woodruff, World Bank, We, Alejandrina Salcedo-Cisneros +3 others
  • 2008
This paper analyzes data from a randomized experiment on mean returns to capital in Sri Lankan micro-enterprises. The findings show greater returns among men than among women; indeed, returns were not different from zero for women. The authors explore different explanations for the lower returns among female owners, and find no evidence that the gender gap(More)
Elections in developing countries commonly fail to deliver accountability because of manipulation, often involving collusion between corrupt election officials and political candidates. We report the results of an experimental evaluation of Photo Quick Count—a monitoring technology designed to detect the illegal sale of votes by corrupt election officials(More)
The views expressed in the HKS Faculty Research Working Paper Series are those of the author(s) and do not necessarily reflect those of the John F. Kennedy School of Government or of Harvard University. Faculty Research Working Papers have not undergone formal review and approval. Such papers are included in this series to elicit feedback and to encourage(More)
We use structural estimates of time preferences to customize incentives for a sample of polio vaccinators during a series of door-to-door immunization drives in Pakistan. Our investigation proceeds in three stages. First, we measure time preferences using intertem-poral allocations of vaccinations. Second, we derive the mapping between these structural(More)
We consider a game between a principal, an agent, and a monitor in which the principal would like to rely on messages by the monitor to target intervention against a misbehaving agent. The difficulty is that the agent can credibly threaten to retaliate against likely whistleblowers in the event of an intervention. In this setting intervention policies that(More)
Despite substantial interest in the potential for mobile money to positively impact the lives of the poor, little empirical evidence exists to substantiate these claims. In this paper, we present the results of a field experiment in Afghanistan that was designed to increase adoption of mobile money, and determine if such adoption led to measurable changes(More)
  • Michael Callen, Craig Suresh De Mel, Christopher Mcintosh, Woodruff, Harvard Kennedy School, Craig Mcintosh +1 other
  • 2016
When households increase their deposits in formal bank savings accounts, what is the source of the money? We combine high-frequency surveys with an experiment in which a Sri Lankan bank used mobile Point-of-Service (POS) terminals to collect deposits directly from households each week. We find that the headwaters of formal savings are in sacrificed leisure(More)
Identifying the role of intrinsic, ideological motivation in political behavior is confounded by agents' consequential aims and social concerns. We present an experimental methodology isolating Pakistani men's intrinsic motives for expressing anti-American ideology in a context with clearly-specified financial costs, but negligible other consequential or(More)
A large literature has emphasized elite capture of democratic institutions as the explanation for the low levels of spending on public education in many low-income democracies. This paper provides an alternative to that longstanding hypothesis. Motivated by new crosscountry facts and evidence from Brazilian municipalities, we hypothesize that many(More)
Automatic payroll deductions represent one of the most effective means of increasing savings in developed countries. We design and experimentally evaluate a mobile phone-based automatic payroll deduction system in Afghanistan, a country with limited formal financial infrastructure. We find that employees initially assigned a default contribution rate of 5(More)