Sign in

Justin Sandefur

@justsand.bsky.social
5K followers 312 following 129 posts

Development economist, worrying about economic growth these days. www.openphilanthropy.org/about/team…

PostsRepliesMedia
Justin Sandefur @justsand.bsky.social · 05/01/2026
😬
000
Reposted by Justin Sandefur
Ryan Edwards @ryanbedwards.bsky.social · 05/01/2026
Two minor updates, friends: - As of 1 January 2026, I'm an Associate Professor. - As of today, the first paper I started writing on palm oil, about a decade ago, is in print in the Journal of International Economics. Read, share, cite. Open access: www.sciencedirect.com/science/arti...
sciencedirect.com
Export agriculture and rural poverty: Evidence from Indonesian palm oil
This paper measures the impacts of Indonesia’s palm oil export expansion on district poverty and household expenditure from 2002 to 2015. Identificati…
11626
Justin Sandefur @justsand.bsky.social · 05/01/2026
congrats -- that was a long journey! Happy ending
110
Justin Sandefur @justsand.bsky.social · 04/01/2026
2. Aid for economic growth is tantalizing but much harder. The new enthusiasm for redirecting billions in aid to subsidize private enterprise is way ahead of the evidence. www.chat-gdp.org/development-...
chat-gdp.org
Washington's new model of foreign aid for economic growth
Everybody makes money, but nobody actually makes anything.
031
Justin Sandefur @justsand.bsky.social · 04/01/2026
Preview of my take: 1. Health aid saves millions of lives. There's still low-hanging fruit; it could save millions more. www.cgdev.org/blog/malaria...
cgdev.org
Malaria Vaccines: Turning a Scientific Triumph into Millions of Lives Saved
After decades of research and development, two new malaria vaccines entered routine administration this year. This is a huge win for science, and potentially for humanity. Gavi, the Vaccine Alliance, ...
122
Justin Sandefur @justsand.bsky.social · 04/01/2026
For folks at the AEA meetings... Come hear us debate what we do and don't know about the impact of foreign aid.
165
Justin Sandefur @justsand.bsky.social · 28/12/2025
While it's possible both are right -- the strikes were tactically incompetent, but strategically wise -- that seems to assume this miss (if indeed it was a miss) was an aberration. And we won't just be bungling along, blowing things up in a region we don't understand. TBD.
040
Justin Sandefur @justsand.bsky.social · 28/12/2025
Two views of US strikes in Nigeria... FT reporting: They killed nobody. In the wrong state. WaPo editorial: Kudos to Trump for engaging, More, please!
154
Reposted by Justin Sandefur
Charles Kenny @charlesjkenny.bsky.social · 16/12/2025
@justsand.bsky.social and I have updated our estimates of lives lost based on cuts to US foreign assistance spending through the end of the fiscal year. They look similar or worse than they did back in June: in the range of 500,000 to 1,000,000 people. www.cgdev.org/blog/update-...
cgdev.org
Update on Lives Lost from USAID Cuts
In this blog, we report on an update to our earlier estimates of the potential mortality impacts of the administration’s aid cuts. A similar approach to our original estimates using financial data to ...
156
Reposted by Justin Sandefur
Michael Hobbes @michaelhobbes.bsky.social · 09/08/2025
My least popular (and most correct) view is that cars should be automatically limited to the local speed limit. Put the pedal to the floor and you still can't go over 25mph in a residential area. (15 in Manhattan btw)
666112731355
Justin Sandefur @justsand.bsky.social · 12/12/2025
We end with some 'big think' speculation about deeper causes: the end of hyperglobalization, and the broader retreat from liberalism. Will leave that florid prose to the full post, link below. 5/5 www.chat-gdp.org/we-were-wro...
020
Justin Sandefur @justsand.bsky.social · 12/12/2025
This poses a bit of a puzzle: if 70% of LMICs are catching up, why no convergence? The answer is basically about magnitudes: the growth boom in low- and esp middle-income countries has collapsed -- reflected in the end of global poverty reduction that others have documented. 4/
110
Justin Sandefur @justsand.bsky.social · 12/12/2025
One slightly more optimistic lens on this (2nd) reversal: if instead of a standard Solow-convergence metric, we look at the % of LMICs who are growing faster than the G7, that number remains high, around 70%. But it's also falling fast. 3/
110
Justin Sandefur @justsand.bsky.social · 12/12/2025
To be precise, it's not so much that we were wrong, as that facts have changed. We're not the first to notice: see links in post to Soumaya Keynes, Olaberria & Reinhardt, and Jonathan Hartley. But having hyped the rise of convergence, we felt we should reflect on its fall. 2/
110
Justin Sandefur @justsand.bsky.social · 12/12/2025
New from Dev Patel, @arvind2011.bsky.social & me: "We were wrong about convergence." A few years back, we wrote a paper pointing out that Solow convergence had finally arrived. The developing world was catching up. Alas, it seems all good things come to an end. 1/
192
Reposted by Justin Sandefur
Worst girl in Europe @hrisyana.bsky.social · 11/12/2025
Great thread touching on why *ONLY* using private inv is NOT the solution. To echo once again the msg: focusing solely on private inv does not create much room for other riskier options (which in many EMDEs means investing in long term sustainable solutions for climate change, gender equality, etc)
111
Justin Sandefur @justsand.bsky.social · 09/12/2025
TOP: Household surveys ask women age 15-49 a lot more questions. BOTTOM: So enumerators appear to drop them, non-randomly. Adjusting for this "[calls] into question whether Africa’s fertility transition is as uniquely slow as previously thought." economics.yale.edu/sites/defau...
1116
Justin Sandefur @justsand.bsky.social · 05/12/2025
Striking how uniquely exposed to Trump's tariffs India is: - 33% effective tariff rate (among the highest now) - 19% of exports went to US last year (not Mexico, but high-ish)
040
Reposted by Justin Sandefur
Charles Kenny @charlesjkenny.bsky.social · 03/12/2025
Manufacturing for export has been the major path for rapid growth in developing countries. How is the World Bank's private sector arm the IFC doing in supporting that model? Not so good.
112
Justin Sandefur @justsand.bsky.social · 02/12/2025
Washington's new model of aid for growth has upsides if it can incubate new productive sectors. There's nothing wrong with development finance helping investors make money. But it also needs to help poor countries make stuff. /end
140
Justin Sandefur @justsand.bsky.social · 02/12/2025
The history of successful industrial policy, e.g., in East Asia, involved leaning against market pressure to invest in finance and real estate, and instead directing scarce subsidies to sectors deemed strategic for growth. In short, export discipline. 10/
171
Justin Sandefur @justsand.bsky.social · 02/12/2025
Why the turn away from industrialization? One factor seems to be that development finance institutions like the World Bank's IFC are profit driven, and investing in Togolese factories is just less profitable than investing in Turkish banks. 9/
130
Justin Sandefur @justsand.bsky.social · 02/12/2025
Applying those sector characteristics to the industry composition of World Bank's private sector investments over time -- which is a bit of a leap, but is the best I can do with the data at hand -- what you see is basically a declining focus on jobs, exports, and growth. 8/
130
Justin Sandefur @justsand.bsky.social · 02/12/2025
There's a reason economists obsess over manufacturing. It's been the engine of most big economic 'miracles' in modern history: exportable, labor intensive, and fast growing. 7/
120
Justin Sandefur @justsand.bsky.social · 02/12/2025
There are counter examples -- I discuss a new garment factory in Togo that the World Bank helped finance (see 1st pic). But the modal project is a loan to a bank in Mexico or Turkey, ostensibly to expand credit in the economy -- a strategy with a limited evidentiary base. 6/
140
Justin Sandefur @justsand.bsky.social · 02/12/2025
Second, and I think less discussed, very little $ goes to the sectors that are traditional growth drivers like manufacturing, and in particular exports. Exporting isn't reported, but here's my attempt to scrape mentions of exports from World Bank (IFC) project disclosures. 5/
120
Justin Sandefur @justsand.bsky.social · 02/12/2025
Is that so bad? God knows poor countries need investment. And there's nothing wrong with companies turning a profit. But two red flags: First, as has been widely discussed, very little of that money goes to the poorest countries. 4/
120
Justin Sandefur @justsand.bsky.social · 02/12/2025
Notice the trend to private sector deals: USAID is dead. Meanwhile, the US DFC, which backs (preferably) American firms investing overseas, is growing. And down the street at the World Bank, private sector deals are on track to eclipse sovereign lending in a few years. 3/
120
Justin Sandefur @justsand.bsky.social · 02/12/2025
Foreign aid is dead (not really, but it's been a rough year). In its wake, there's a healthy pivot to talking about economic growth in poor countries. But in DC, that manifests as a fixation on private finance & too little talk about the real economy. www.chat-gdp.org/development... 2/
chat-gdp.org
ChatGDP
A blog about economic growth and poverty reduction.
131
Justin Sandefur @justsand.bsky.social · 02/12/2025
Hello! I'm starting a new blog/newsletter thing. First post is about aid and growth, and what I think is missing from the renewed enthusiasm in DC to subsidize private investment in developing countries: i.e., export discipline. 1/
33813
Justin Sandefur @justsand.bsky.social · 26/11/2025
"An approximate cost-benefit calculation suggests firm owners have earned a cumulative return of 900 percent or more on the cost of this training over seven years... without the need for asset or cash transfers" openknowledge.worldbank.org/server/api/...
031
Justin Sandefur @justsand.bsky.social · 26/11/2025
It feels weird to me for the World Bank to focus on psychological training to make Togolese people better entrepreneurs but... it does seem to work. New in the AER:
150
Justin Sandefur @justsand.bsky.social · 26/11/2025
I'm constantly confused by people who see a higher poverty line as a progressive goal, as opposed to shifting focus away from the 40% of the world living on <1/10th of that amount. $100k (PPP) for a family of 4 = 99.99th percentile in India = 99th percentile in China = 93rd percentile in the world
0100
Justin Sandefur @justsand.bsky.social · 23/11/2025
ouch, good catch
030
Justin Sandefur @justsand.bsky.social · 23/11/2025
Ungated link: www.dropbox.com/scl/fi/w5sm...
010
Justin Sandefur @justsand.bsky.social · 23/11/2025
Why aren't there more big, labor-intensive firms in poor countries? Answer here: bigger firms use more white-color workers who are in shorter supply in poorer countries.
2257
Reposted by Justin Sandefur
Alexander Berger @albrgr.bsky.social · 18/11/2025
Some news: Open Philanthropy is now Coefficient Giving! Our mission is unchanged but the new name reflects our growing work with other donors to multiply the impact of their giving. 🧵 on our work to make philanthropy a more efficient "market" and plans going forward:
1446
Reposted by Justin Sandefur
Nancy Birdsall @nbirdsall.bsky.social · 06/11/2025
Accessible to all! ...my paper in Journal of Econ Perspectives on World Bank's 1993 East Asian "Miracle" report ("Too Much A Product of Its TIme?") (www.aeaweb.org/full_issue.p...). @cgdev.org @mclem.org @arvind2011.bsky.social @justsand.bsky.social
aeaweb.org
097
Reposted by Justin Sandefur
Paddy Carter @paddycarter.bsky.social · 24/10/2025
this is a whopper - 600+ pages - but the intro by Besley and Velasco is short easy reading. Is this really the mainstream consensus? A lot of big names are in here, and other big names give positive blubs. If so, it differs from the "mainstream" econ of the popular imagination.
021
Justin Sandefur @justsand.bsky.social · 22/10/2025
Book launch day -- congrats to @arvind2011.bsky.social & Devesh Kapur! The book is full of data and historical vignettes, but more importantly, really challenges a lot of received wisdom about India's development trajectory. Must read.
032
Reposted by Justin Sandefur
Alexander Berger @albrgr.bsky.social · 21/10/2025
New @devex.com article, ft. @justsand.bsky.social, on our our $40m fund to accelerate economic growth in low- and middle-income countries, including a great explanation of hits-based vs. GiveWell-style philanthropic giving www.devex.com/news/as-aid...
141
Reposted by Justin Sandefur
Justin Wolfers @justinwolfers.bsky.social · 23/09/2025
Every time I talk with @mclem.org about the economics of immigration, I come away a whole lot smarter. You can enjoy the same experience: He's written a fantastic primer on what the data reveals about the effect of slashing H-1B visas. It's a banger. Read it. www.piie.com/blogs/realti...
piie.com
New US curb on high-skill immigrant workers ignores evidence of its likely harms
President Donald Trump on Friday ordered an unprecedented new restriction on lawful immigration to the US by high-skill workers. Starting Sunday, new applications for H-1B visas required payment of an...
16402152
Justin Sandefur @justsand.bsky.social · 23/09/2025
America's offer to Africa: Trade not aid! But also, no more trade preferences.
062
Reposted by Justin Sandefur
Charlie Robertson @frontiercharlie.bsky.social · 15/09/2025
Botswana credit rating downgraded from BBB+ to BBB, still one notch above the lowest investment grade rating of BBB-. Botswana started with a A rating in 2001 from S&P, cut to A- after the global financial crisis and to BBB+ during COVID The external shock hitting Botswana now is very specific
173
Justin Sandefur @justsand.bsky.social · 08/09/2025
Meanwhile, X is blocked but b-sky works. Make of that what you will.
000
Justin Sandefur @justsand.bsky.social · 08/09/2025
Tourists sun by the pool overlooking the high court next door, where Tanzania’s opposition leader — previously shot 16 times — is being tried for treason. A metaphor perhaps for the international community’s response to Tanzania’s democratic backsliding.
192
Reposted by Justin Sandefur
Christina Proenza-Coles @proenzacoles.bsky.social · 31/08/2025
“For all intents and purposes, Nkrumah paralleled Mahatma Gandhi and Martin Luther King Jr. in his reach and influence. That little is known about him outside of Africa and African diasporic communities is a reflection of the continued marginalization of the continent in the Western imagination.”
12816
Reposted by Justin Sandefur
Maia @maiamindel.bsky.social · 26/08/2025
Emergency 1:30 am blog post: Trump tried to fire a Federal Reserve governor. It’s really bad, not just for the United States, but for everyone else. To start Tuesday off on a positive, cheerful note! open.substack.com/pub/someunpl...
open.substack.com
Today Is Our Dependence Day
There's not going to be an independent Fed you stupid slut
59215
Reposted by Justin Sandefur
Claudia Sahm @claudia-sahm.bsky.social · 21/08/2025
“I have no intention of being bullied to step down from my position because of some questions raised in a tweet,” Cook said. www.bloomberg.com/news/article... Amen.
bloomberg.com
Fed’s Cook Says She Won’t Be Bullied Into Stepping Down
Federal Reserve Governor Lisa Cook signaled her intention to remain at the central bank in defiance of calls for her resignation by President Donald Trump over allegations of mortgage fraud.
621055
Justin Sandefur @justsand.bsky.social · 14/08/2025
My experience is if you send Mauricio a half-baked idea, he might just code it up for you and send back a TeX file. Dunno if it’ll work with him as an editor, but worth trying at least…
150