
David Roodman
@davidroodman
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Senior advisor @open_phil. Formerly @GiveWell, @CGDev.
Washington, DC
Joined June 2009
🚨 @I4Replication released my experiment with a new academic-literary form, a “replication opinion.”.I made myself judge in a debate and wrote an opinion that is more credible than either party could muster. Piece: Post: 🧵 follows.
davidroodman.com
While I discuss my employer's work in this post, all opinions are my own. My employer, Open Philanthropy, strives to make grants in light of evidence. Of course, many uncertainties in our decision-...
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RT @JohnArnoldFndtn: Good illustration of how much the Texas grid has changed in just 6 years. yellow = solar; purple = batteries; dark gr….
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My critical replication of a study of childhood vaccination and adult wages in India is final & effectively published.Thread: Free pub:
My new, short write-up about a flaw in a recent study finding that India’s universal vaccination program boosted future wages of babies who got the shots: 1/.
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Whistleblower Raphaël Lévy on the systemic discouragement for calling out scientific fraud: "if a student or a more junior researcher had faced such a backlash it is unlikely that they would have been able to stand up to it."
chemistryworld.com
Raphaël Lévy talks to Chemistry World about reporting Jolanda Spadavecchia, the backlash he faced and how misconduct should be investigated
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RT @emollick: 👀Using an autonomous agent based on o3-mini and GPT-4.1, a team from Harvard, MIT & other institutions reproduced and updated….
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RT @leecrawfurd: "Many global health problems are thorny and difficult. Lead, unusually, is not one of those. We already know how to reduce….
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RT @open_phil: New podcast alert! Hard Drugs - a collaboration between @JacobTref at Open Phil and @salonium at @WorksInProgMag. Listen h….
open.spotify.com
Podcast · Saloni Dattani & Jacob Trefethen · Hard Drugs is a show by Saloni Dattani and Jacob Trefethen about medical innovation: how to speed it up, how to scale it up, and how to make sure lifesa...
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RT @JustinSandefur: A million lives at risk?. @charlesjkenny and I estimate the possible toll from the aid cuts in the White House's FY26 b….
cgdev.org
The White House has presented further details of its FY 2026 budget request. It includes a proposed two-thirds cut to global health and humanitarian funding. Such a reduction is impossible to...
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Those doing the vetting would need to be embedded in an incentive regime outside academia, one that frees them to worry more about the consequences of error. Like red teams at the CIA & DOD or GiveWell, with its great "what if we're wrong" work (.
Each year, GiveWell makes hundreds of millions of dollars in grants aimed at saving and improving lives globally. My team's job is to look for ways we could be wrong and make our research better. Here's what we've been up to and what's next đź§µ.
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Update: AEJ Applied rejected my "replication opinion" on the debate they hosted. It was an odd duck. But there's still something wrong when research consumers structurally care more about truth than the producers & the former overly trust peer review & the latter play along.
🚨 @I4Replication released my experiment with a new academic-literary form, a “replication opinion.”.I made myself judge in a debate and wrote an opinion that is more credible than either party could muster. Piece: Post: 🧵 follows.
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Fantastic work. When I was at GiveWell, we had an "I was wrong" T-shirt you could wear when found to be wrong. It made it fun to admit error and was both a signal of and contributor to a culture of truth-seeking.
Each year, GiveWell makes hundreds of millions of dollars in grants aimed at saving and improving lives globally. My team's job is to look for ways we could be wrong and make our research better. Here's what we've been up to and what's next đź§µ.
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RT @alexwcohen: We wanted to verify the evidence behind >$1 billion in grants we've made to our top charities — so we asked @I4Replication….
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I'm flattered. But I know Stuart, as a wise person on metascience, means this as a concrete strategy for making the world better. I agree! I'm thinking now about what I can do to promote more in-depth vetting of important studies. Peer review alone falls way short.
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RT @TheReplicateNet: GUEST BLOG at TRN ("Appeal to Me – First Trial of a “Replication Opinion”) Comments. Replications. And now "Replicatio….
replicationnetwork.com
[This blog is a repost of a blog that first appeared at davidroodman.com. It is republished here with permission from the author.] My employer, Open Philanthropy, strives to make grants in light of…
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RT @johannarickne: 10/ Please help share our extended replication to stop the spread of this erroneous policy evaluation! . Read the new re….
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Welcome @JustinSandefur! I take Granger-causal credit for this excellent hire. Justin came to @CGDev years after me, and now to @open_phil years after me. A few days ago he was even sitting at my desk.
Extremely excited to have @JustinSandefur officially joining @open_phil to lead our work on economic growth in LMICs! Lots of opportunities and challenges ahead and I think Justin will do a great job leading this work.
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