John A. List

John A. List

@johnlist.bsky.social

I am an Economist leveraging the assignment mechanism in the field to test theory and help non-profits, govts, and anyone who will listen! My goal is to (hopefully!) change the world for the better. My picture is with my oldest son!

5.3K followers5.7K following180 posts

It’s that time of year.  Woke up to 3 emails that are all promising to “TRIPLE MATCH” my donation before the midterms.  They URGENTLY need my help!  What they urgently need is an economist, or at least to run the field experiment/read the literature! ideas.repec.org/p/feb/natura...

ideas.repec.orgDoes price matter in charitable giving? Evidence from a largWe conducted a natural field experiment to explore the effect of price changes on charitable contributions. To operationalize our tests, we examine whether an offer to match contributions to a non-pro

Our new study, “Research Registries and the Credibility Crisis: An Empirical and Theoretical Investigation” has just been printed by the Economic Journal! Bottom line: we can do better! Are other sciences doing better? No. You can find a downloadable copy here: ideas.repec.org/p/feb/artefa...

ideas.repec.orgResearch Registries: Facts, Myths, and Possible ImprovementsThe past few decades have ushered in an experimental revolution in economics whereby scholars are now much more likely to generate their own data. While there are virtues associated with this movement

Today is the day! My daughter Genevieve will marry David here in the wonderful Mexico City. That means the last of the Econ-Jeopardy "I do" series is here (and indeed a hard one for the $400 category!)

As a grad student i studied urban economics and I can say that the enchanting Mexico City is a master class in agglomeration. 22 million people, entrepreneurs throughout, and price discovery on every street corner. This great city is glorious. Now to the Econ-Jeopardy for today, a tricky one!

The big day is approaching here in Mexico City! And, I must say that the ring David Dworsky gave to my daughter Genevieve Liu is beyond amazing. It motivates my next Econ-Jeopardy!

This week is a special one for our family. My daughter, Genevieve Liu, is getting married in Mexico City! I just arrived today so why not start with some fun economics trivia!

Because I truly believe economics is for everyone and many of us have fun with trivia, I will post some Economic-Jeopardy style questions every once in a while. Here is the first one, from my "famous economists" column:

John A. List reposted

Is the greater ethical risk running a carefully designed natural field experiment, or scaling a policy on evidence we intellectually know will not generalize? That is one of the questions I take on in this new @nature.com paper: ideas.repec.org/p/feb/natura...

ideas.repec.orgMake Science More Reliable: Study People As They Go About ThResearchers have long discussed the replication crisis. Now it’s time to tackle another problem in the behavioural sciences: generalizability.

Thanks so much for highlighting @koenfucius.bsky.social!

koenfucius@koenfucius.bsky.social

A nudge that cuts electricity use by 3%—not very impressive. That’s the wrong way to evaluate behavioural policy, argue @johnlist.bsky.social et al. Research suggests cost-effectiveness of nudges outstrips price instruments (eg tax or subsidy) in 5 domains: buff.ly/RmLOBZt

Thanks so much @clintent-to-treat.bsky.social! And, your working paper is fascinating!

Clint Harris@clintent-to-treat.bsky.social

www.nber.org/papers/w35544 I enjoy this sassy abstract from @johnlist.bsky.social. I wonder how well the number of enrollment invites each subject receives prior to enrolling would work as IVs in lieu of incentives, a la Behaghel et al (2015) or my working paper arxiv.org/abs/2404.17693.

Just boarded a flight to attend the ESA meetings. The best part of these types of trips is learning from all the brilliant scholars. I will present a new study titled: “Don’t give up on the lab: why the field still needs lab experiments.” ideas.repec.org/p/feb/natura... See everyone tomorrow!

ideas.repec.orgDon't Give Up on Lab Experiments: Why the Field Still NeedsRecent enthusiasm for field experiments, and especially for natural field experiments (NFEs), in which subjects go about their daily activities unaware that any study is taking place, has sometimes be

Thanks so much for your generous review of my new book @dmckenzie.bsky.social. The book was truly a labor of love and to have someone of David's ilk find it useful makes me beyond happy!

David McKenzie@dmckenzie.bsky.social

In today's blog, I read through all of @johnlist.bsky.social's new mammoth textbook on experimental economics. I highlight the parts I think will be particularly useful to development economists, including great chapters on ethics, DUAs, ... 1/2 blogs.worldbank.org/en/impacteva...

Excited to be on an ESA panel about the future of experimental economics at the meetings this July in LA. Even creating a new paper for the occasion! "Don't Give Up on Lab Experiments: The Deep Complementarity of Lab and Field Experiments." Hope to see you in LA: sites.google.com/view/esa2026...

sites.google.comESA 2026 World MeetingsThe 2026 ESA World Meetings will be held at the Marriott Resort Hotel in Marina del Rey, California, just half a mile from Venice Beach and an easy 15-minute car ride from Los Angeles International Ai...

This breaks my heart.

Kyle Siler@kylesiler.bsky.social

That's awful and absurd. I suppose they wouldn't hire @johnlist.bsky.social out of the University of Wyoming, either. 🙄 If possible, I'd suggest naming the rector and institution. Science would benefit from norm enforcement here, and sunshine is the best disinfectant.

Lecturing on discrimination this week and this study will be one discussion point: ideas.repec.org/p/feb/natura... Big data show that minority drivers are 24–33% more likely to be cited and paid 23–34% higher fines, not explained by differences in offense rates, accident risk, or re-offense rates.

ideas.repec.orgHigh-frequency location data shows that race affects the likPrior research finds that, conditional on an encounter, minority civilians are more likely to be punished by police than white civilians. An open question is whether the actual encounter is related to

John A. List reposted

Replying to @geowu.bsky.social

It turns out that certain combinations of tau and alpha are consistent with risk mattering less. Surprise: the model also provides an explanation for the uncertainty effect, a finding that Uri Gneezy, @johnlist.bsky.social, and I wrote up 20 years ago. academic.oup.com/qje/article-... 17/N

academic.oup.comThe Uncertainty Effect: When a Risky Prospect is Valued Less than its Worst Possible OutcomeAbstract. Expected utility theory, prospect theory, and most other models of risky choice are based on the fundamental premise that individuals choose amon

Our new study just out in the @nber.org. We use a natural field experiment from my time back at Lyft to show that nonlinear pricing isn't just a contract design problem. It's a behavioral intervention problem too.

NBER@nber.org

The economics of subscriptions, from Aaron L. Bodoh-Creed, Brent R. Hickman, John A. List, Ian Muir, and Gregory K. Sun www.nber.org/papers/w35003

Congrats on the new job! And, looking forward to my visit!

Sebastian J. Goerg@sebastianjgoerg.bsky.social

First month in a new job and I will have the honor to introduce @johnlist.bsky.social as the NIM Distinguished Speaker. Not a bad start at all 😀

I have received an unusual number of DMs on what's happening in the US. When I reflect on recent events, I am deeply saddened but find some comfort in thinking like an experimentalist. Why?

Because every experiment starts with optimism. You have to believe something can be better before you will bother testing it. Pessimists do not run experiments. They have already decided on the answer.

I'm sticking with the experimentalists. It's not denial or blind positivity; it's refusing to let sadness or outrage freeze us into inaction. There's work to do, and it starts and ends with being humane humans.

Munich in September, great colleagues, and a field that matters. If you're working on economics of education, please join us at the CESifo Economics of Education conference! Rick and Ludger (woessmann.bsky.social) always put together a very stimulating conference.

Ludger Woessmann@woessmann.bsky.social

📢 Call for papers: CESifo Area Conference on Economics of Education co-organized w/ Eric Hanushek (Stanford) 🏛️ 11-12 Sept 2026, Munich 🧑‍🏫 Keynote: John List (Chicago) @johnlist.bsky.social 👉 www.ifo.de/en/cesifo/ev... ⏰ Deadline: 11 May 2026 🖼️ Past programs: sites.google.com/view/woessma...

If that link does not work please try this one: ideas.repec.org/p/feb/natura...

ideas.repec.orgThe Economics of Scaling Early Childhood Programs: Lessons fMany ideas show remarkable returns in small-scale trials but often disappoint when scaled to broader populations and contexts. Using early childhood investment as a case study, this study develops a d
John A. List@johnlist.bsky.social

What hits home runs in the minors but strikes out in the majors? Most pilot programs. They dazzle in pilots and flop at scale. My new study (ideas.repec.org/p/feb/natura...) offers a model for designing interventions that anticipate scaling challenges early. Let's make scaling a scientific object!

My FOMO has now been maximized...by a picture just sent! I had to miss this year, but the AEAs are always a favorite, largely because of the brilliant economists. Pictured below are two of them on the market: Haruka and Danielle. Good luck to you both, keep changing the world and making us proud!

The holidays are a good time to step back from the research and remember what it's all for. Grateful for family, for colleagues who push my thinking, and for the chance to do work that might make a small difference. Wishing you and yours a restful break and a bright 2026!

Wonderful conference! I urge all to mark their calendars.

Happy 1-year anniversary to the most incredible couple I know—Francesca & Eli! You two are brilliant, kind, and absolutely unstoppable together. Here’s to many more years of love, laughter, and changing the world in your own beautiful way. Love you both!😍😍

Happy Thanksgiving everyone! Sending all my love. Never forget that the best things at the table aren't on the plates. Today's data point: you matter deeply to someone. Let them know how much they matter to you. Wishing you a Thanksgiving full of exactly that.