iiinova — where your digital self keeps evolving

Reposted by Anders Kjelsrud

Institute for Replication @i4replication.bsky.social · 12/10/2026

Our chair and a few replicators investigated a paper about elite footballers. And missed the bigger story. An independent researcher showed us what we had failed to see. This is I4R’s CRAVE–football investigation. It starts with a PNAS paper. #CRAVEFiles

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Jessica Leight @leightjessica.bsky.social · 21/09/2026

Today's cool young researcher #econtwitter #econsky is @TCarnap @UniOslo who works on a range of topics including economic geography + use of remote sensing data in developing countries

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Institute for Replication @i4replication.bsky.social · 22/09/2026

Our comment on “Raising Health Awareness in Rural Communities” is finally published in REStat (MIT Press). But the retraction we had been told was coming never happened. Can lawyers derail a retraction? This case raises that uncomfortable question. 🧵

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Anders Kjelsrud @anderskjelsrud.bsky.social · 02/09/2026

Take a look at our new piece on cash transfers in Kenya!

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Institute for Replication @i4replication.bsky.social · 31/05/2026

Incentives to reproduce and replicate articles are so bad. Even when your comment leads to the retraction of a PLOS One article, the reward is a (10 days late) email with a thank you at the bottom. Retraction notice: journals.plos.org/plosone/arti.... But we are not complaining about PLOS One 🧵

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Institute for Replication @i4replication.bsky.social · 25/05/2026

#GDRI_rep Update 10 The orphan article has finally been retracted! Took more than a year, but at last. Read about our investigation (bsky.app/profile/i4re...) and updates ( #GDRI_rep). A good summary: a-ortmann.medium.com/the-asad-isl... and a-ortmann.medium.com/tallying-the...

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Institute for Replication @i4replication.bsky.social · 30/10/2025

#GDRI_rep Update 9: We have been waiting a couple of months to make two announcements. A few journals were in the process of retracting GDRI article. The editors informed the authors and then lawyers got involved. Who knows how long it will take.

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Jørgen Modalsli @modals.li · 30/10/2025

New working paper! *Measuring long-run wealth inequality: Empirical results for Norway 1912-2019* (with Aaberge and Solbakken) We estimate wealth inequality in Norway based on a set of historical and contemporary sources. www.ssb.no/en/inntekt-o...

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Olle Hammar @ollehammar.bsky.social · 10/10/2025

🚨 Our comment on Begum, Grossman & Islam (2018) in @readdemography.bsky.social is now available as an @i4replication.bsky.social working paper (w/ @carlbonander.bsky.social, @nikljako.bsky.social, Bensch & Brodeur). Read it here 👉 www.econstor.eu/bitstream/10...

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Institute for Replication @i4replication.bsky.social · 27/08/2025

#GDRI_rep Update 8a: Major updates coming up over the next few weeks. 1st update: We reproduced "Parent–teacher meetings and student outcomes" some time ago. The paper was then retracted by the editors of the Euro Econ Rev. Additional studies are connected (see diagram) 🧵

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Andreas Kotsadam @kotsadam.bsky.social · 21/06/2025

Important paper from @anderskjelsrud.bsky.social and Sahar!

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John Holbein @johnholbein1.bsky.social · 20/06/2025

Female PhD students (in economics) benefit tremendously from having female faculty around. When female professors go on leave, it decreases third-year female PhD students’ likelihood of publishing & securing academic positions. papers.ssrn.com/sol3/papers....

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Olle Folke @ollefolke.bsky.social · 15/05/2025

Update: We submitted the comment to the Journal of Population Economics, and today we got a desk reject with this motivation. However, we do not know their conclusion about the main results and why the paper was not retracted. Clearly, they do not hold. 1/4

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Johanna Rickne @johannarickne.bsky.social · 09/05/2025

🚨 REPLICATION REPORT UPDATE: One year ago, a tweet by John Holbein alerted me, @ollefolke.bsky.social, and @jopieboy.bsky.social to a paper with a shocking result about Sweden’s law criminalizing the purchase of sex.🧵

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Magnus B Rasmussen @magnusrasmussen.bsky.social · 22/04/2025

🚨 New #EconHistory research alert! Our paper “Strikes & Machines: Investment decisions in inter‑war Norway” conditionally accepted in Journal of Economic History ask "What did strike threats really do to technology?" 👇 1/6

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Institute for Replication @i4replication.bsky.social · 25/03/2025

#GDRI_rep Update 6: Some of the authors have responded to our report on "Raising Health Awareness in Rural Communities" @ The Review of Economics and Statistics. Authors received our report Feb 6. A short 🧵

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Andreas Kotsadam @kotsadam.bsky.social · 15/03/2025

This gem is hidden in the response to the response. ”…within a few hours and under extreme time pressure 11,843 households were visited and 22,686 respondents interviewed (two spouses in each household).” Indeed hard to believe 🫠

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Reposted by Anders Kjelsrud

Olle Hammar @ollehammar.bsky.social · 11/03/2025

In a new @i4replication.bsky.social report we replicate Islam (2019). Main issue: the randomized controlled trial was not randomized. And many other things on top of that. See full report for details. (w/ @carlbonander.bsky.social, @nikljako.bsky.social, @flxhlzmstr.bsky.social, Bensch & Brodeur)

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Institute for Replication @i4replication.bsky.social · 11/03/2025

#GDRI_rep Update 4: We have a new report. We reproduced the paper entitled "Parent–teacher meetings and student outcomes" by Islam @ European Economic Review. See below for links to report and author's response.

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Reposted by Anders Kjelsrud

Institute for Replication @i4replication.bsky.social · 03/03/2025

#GDRI_rep Update 2: I4R sent a report to the original authors for the PLOS One article "“Food insecurity and mental health of women during COVID-19: Evidence from a developing country". All authors have now emailed PLOS One to withdraw their names. osf.io/7tzek/

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Institute for Replication @i4replication.bsky.social · 03/03/2025

#GDRI_rep Update 1: I4R are now reproducing all published papers that use data from GDRI, or are closely related in other ways. Here is a first update on our work. 🧵

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Mari Rege @marirege.bsky.social · 02/03/2025

Opprop! Vi er 47 samfunnsøkonomer som tar til orde for en kraftig økning av Norges støtte til Ukraina. www.aftenposten.no/meninger/deb...

aftenposten.no

Handlingsregelen må ikke stå i veien for en kraftig økning av Norges støtte til Ukraina

Ved å gi Ukraina det landet trenger, gjør vi nettopp det handlingsregelen var ment å gjøre.

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Anders Kjelsrud @anderskjelsrud.bsky.social · 24/02/2025

There is still time to submit one of your papers to NCDE!

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Institute for Replication @i4replication.bsky.social · 24/02/2025

2nd report reproduces “Raising Health Awareness in Rural Communities: A Randomized Experiment in Bangladesh and India'' by Siddique et al. Review of Economics and Statistics. Authors received our report Feb 6. See same statements from some of the authors and full report here: osf.io/c3k6f/

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Olle Hammar @ollehammar.bsky.social · 19/02/2025

👏 Good news for researchers working with Swedish register data and who want their research to be reproducible 👉 If you include in your ethics application/research plan that replication may be part of the project, then external replicators (e.g. data editors) can be given access to the data!

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Reposted by Anders Kjelsrud

Institute for Replication @i4replication.bsky.social · 19/02/2025

Abel: I am writing in my capacity as Chair of I4R. Last year, I was contacted by a researcher that alerted me of potential scientific misconduct in a set of papers all using data from a specific NGO.🧵

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Laura Derksen @lauraderksen.bsky.social · 17/02/2025

Reminder to send your papers to the Nordic Conference in Development Econ. Oslo is beautiful in summertime, we will swim in the fjord! (and talk research of course) #econsky

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Reposted by Anders Kjelsrud

Olivier Bos @olivierbos.bsky.social · 03/02/2025

Actually, Sahar presented some of your results during our Annual Lecture on Diversity, Equity, and Inclusion. And the video is available online here: www.youtube.com/watch?v=gJ44... And by the way, you have super interesting results!

youtube.com

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Anders Kjelsrud @anderskjelsrud.bsky.social · 11/01/2025

Thanks! strange, it works on my Chrome. You can also find the paper here: sites.google.com/site/andersk...

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Reposted by Anders Kjelsrud

Magnus B Rasmussen @magnusrasmussen.bsky.social · 10/01/2025

Come to Oslo for the 23rd Nordic Conference in Development Economics! June 17–18, 2025. Keynotes: Eliana La Ferrara (Harvard Kennedy School) Kalle Moene (University of Oslo). No conference fee—just bring your passion for research! Submission deadline: Feb 28, 2025. Link below:

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Anders Kjelsrud @anderskjelsrud.bsky.social · 09/01/2025

📢 Call for papers 📢 Submit your paper to the Nordic Conference in Development Economics Where and when: Oslo, June 17-18 Submission deadline: Feb 28 Keynotes: Eliana la Ferrara and Kalle Moene www.oslomet.no/en/about/eve...

oslomet.no

Nordic Conference in Development Economics - NCDE 2025

Welcome to the 23rd Nordic Conference in Development Economics.

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Anders Kjelsrud @anderskjelsrud.bsky.social · 08/01/2025

Jepp, det kan kanskje virke sånn.

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

Thank you! And thanks for sharing- I will definitely take a look.

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

Want more? Read the full paper here: github.com/parsahar/par...

github.com

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

How does it all matter? Our findings underscore the importance of same-gender mentorship in male-dominated fields like Econ. A counterfactual exercise suggests that hiring one extra female prof at each of the top-50 schools would close 1/3 of the gender gap among ass profs at the top-25 schools.

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

To support this interpretation, we – among other things – provide evidence of gender homophily in advisor-advisee relationships. Even controlling for department-year-field fixed effects, we find that female students are 50% more likely to have a female advisor compared to male students.

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

What explains these results? We argue that the effects are connected to gender homophily in professional and social networks. The absence of female mentors hinders the development and placement of female students, while indirectly benefiting male students (perhaps through reduced competition).

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

Still, placements are not of equal “quality". Females are missing from the top-ranked institutions, while males fill lower ranked positions.

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

3. For male students, we find what looks like a zero-sum game: affected males publish more and are more likely to stay in academia.

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

2. The fall in publications of female students is matched with a fall in the probability of being placed in academia of 9.8%-points (20% of the sample mean).

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

1. Female PhD students in their 3rd year at the time a female prof goes on leave publish much less in the five years after getting their PhD, declining 33% relative to the sample mean.

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

We study the effect of female professors' sabbaticals using a novel dataset on close to all 1998-2015 advisors-advisee relationships and early-career outcomes of top-50 PhD students. Here are our 3 main results ⬇️

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

Given the lack of female professors, a single woman missing translates into an average decline of 40% in the no of female professors present during the leave year!

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Anders Kjelsrud @anderskjelsrud.bsky.social · 07/01/2025

**New working paper** How does the under-representation of females in Economics affect the career trajectory of female Ph.D. students? Sahar Parsa and I look at this in a new working paper by exploring sabbatical leaves taken by female professors at top-50 US Econ departments.

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Jørgen Modalsli @modals.li · 26/11/2024

New working paper! How Business Income Measures Affect Income Inequality and the Tax Burden, with Aaberge, Francesconi and Vestad. Using Norwegian administrative data, we show that income inequality is much higher than commonly measured. Measurement matters! www.iza.org/publications...

$This paper presents estimates of income concentration and inequality for Norway using a new comprehensive measure of income, which identifies business income as it is earned by companies rather than when it is paid out as dividends to owners. We assemble several sources of high quality register data that allow us to account for multiple layers of business ownership across all companies between 2001 and 2018. Compared to official statistics, the new measure implies that the share of income attributable to the top 1\% of the distribution more than doubles and the Gini coefficient estimates increase by about 40\%. Our new measure identifies substantial tax regressivity for individuals in the top percentile, a feature that cannot be detected by standard income measures. For instance, while the share of gross income paid in taxes by individuals at the 99th percentile is about 36\% in 2016, the corresponding share paid by individuals in the top 1\% is 19\%.$

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