David McKenzie

David McKenzie

@dmckenzie.bsky.social

Lead Economist at the World Bank’s Development Research Group Development Impact blogger https://sites.google.com/site/decrgdmckenzie/

5.4K followers305 following395 posts

This week's links include how having a spouse with government job security spurred starting a business in China, how bureaucrats in Pakistan take bribes and use them to fund underfunded public services, Ancova beats DiD again, labor slack in health provision... blogs.worldbank.org/en/impacteva...

blogs.worldbank.orgWeekly links October 2, 2026: insurance and entrepreneurship, recycling bribes into public services, labor slack in health, scaling cash, and more…

The answer depends on whether you think entrepreneurship requires making big lumpy investments to be successful (non-convex production functions). If so, it would be better to give bigger grants to fewer entrepreneurs given a budget constraint. We find in the short-run those given larger grants 2/3

buy more inputs and hire more workers, but they don't invest in fundamentally different production technologies, and after 3 years converge to similar firm sizes as those given 9K grants in a multi-stage competitive process. A streamlined process for selection does not do as well 3/3

David McKenzie reposted

🚨🚨 NEW ECONOMICS JOURNAL 🚨🚨 We are excited to announce the launch of The Review of Economic Studies: Insights, a new open-access journal in the REStud family. Mission: publish concise, high-quality research on important questions across economics and economic policy.🧵1/13

David McKenzie reposted

Excellent post. The “reflective” vs “formative” distinction is one I’ve tried to make in the past but not nearly as eloquently. And the fact that Anderson’s ICW index can dampen power by upweighting noise is an important problem that should be better understood.

David McKenzie@dmckenzie.bsky.social

In today's blog, @brucewydick.bsky.social discusses what factors you should consider when aggregating variables into an index - and how to use indices to measure abstract concepts like aspirations, empowerment, and social cohesion blogs.worldbank.org/en/impacteva...

Most packages in the repository run in under an hour, so may be useful for teaching. There is a demand for these packages, with nearly 20,000 users downloading a package so far. 2/3

Most packages are in Stata, followed by R. Only 1 in 5 submitted reproducibility packages is computationally reproducible on first review – meaning the team is able to run the data & code provided & obtain the exact results reported in the publication - so it's important to have these checks 3/3

thinking about external validity, how to write a paper, & lessons from the lab. I also suggest a couple of things for more emphasis like dealing with incomplete take-up, using Ancova, bayesian RCTs, and more of the inside lessons from his work with firms. The good news is more is to come online. 2/2

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Some journals have at least increased the number they publish as submissions increase, with over 1,000 papers published in these 14 journals in 2025. So there is a lot of new development research. Acceptance rates are in the 6-8% range at many journals

This year's series also reports on review times, and on how journal editors are seeing the use of AI in their journals so far. 2025 is too early to see fully AI-generated papers, but publishers are starting to introduce AI disclosure policies. Hope this is useful for people again.

Submission numbers grew rapidly in the last year at several development journals. World Development got 1276 more submissions than in 2024, reaching over 5,000; and JDE got 830 new submissions, reaching over 3,000. Both exceed the AER's 2,114 submissions.

This week's links include what development economics has been working on lately and what it understudies, Paul Niehaus on Give Directly's history and on learning about what matters from recipient choices, unlocking migration's potential through policy lending +... blogs.worldbank.org/en/impacteva...

blogs.worldbank.orgWeekly links April 17: the missing development economics, unlocking migration’s potentials and getting refugees into jobs faster, writing well in the age of AI, and more…

David McKenzie reposted

📢 The LISER Policy Lab team is pleased to share a 🆕 Policy Brief by @dmckenzie.bsky.social "Enhancing the benefits of international #migration through development financing: What is being done and where are the missed opportunities?" 🔗 Read more: www.liser.lu/news/Policy-... #DevelopmentFinancing

liser.luUnlocking migration’s potential through better development financingDespite solid evidence, development financing largely overlooks economic migration, missing major opportunities for growth, skills, and shared benefits.