Moving billions towards evidence, evidence labs and the research-policy gap | Dean Karlan

In 2022, Dean Karlan became Chief Economist at USAID, tasked with steering the world's largest bilateral aid agency towards evidence-backed approaches. He left in 2025, as the agency was being dismantled, having moved roughly $1.7 billion of funding in the process.

In this episode of Ideas in Development, Dean joins Oliver Hanney to discuss what evidence-based policy actually looks like inside a government institution; how his team picked their battles; why collaboration beat prescription; and the limits of taking goals as given. They also cover the rise of embedded evidence labs in countries like Rwanda and Peru, the synthesis and implementation gaps between academia and policy, and whether there are questions in development economics, like the impacts of cash transfers, on which we now have enough evidence.

Dean Karlan is Professor of Economics and Finance at Northwestern University, founder of Innovations for Poverty Action, and former Chief Economist of USAID.

Read the show notes on our Substack: https://ideasindevelopment.substack.com/

#evidence #economics #research #development

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