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Olle Hammar

@ollehammar.bsky.social

Assistant Professor in Economics @linnaeus-econ.bsky.social. Researcher @sthlmschoolofecon.bsky.social. PhD from @uu.se. Inequality, migration, replication. http://www.ollehammar.com/

1,958 Followers  |  1,023 Following  |  113 Posts  |  Joined: 30.09.2023
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Posts by Olle Hammar (@ollehammar.bsky.social)

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Gabriel Zucman och Daniel Waldenström diskuterar förmögenheter och ojämlikhet på Stockholms universitet den 31:e mars. Öppet för allmänheten. Sprid gärna! www.su.se/enheter/nati...

05.03.2026 08:12 — 👍 6    🔁 4    💬 0    📌 0
Post image 04.03.2026 18:14 — 👍 0    🔁 0    💬 0    📌 0
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🚨 Closing Tomorrow 🚨

Call for Papers: 24th Nordic Conference in Development Economics (NCDE) 2026 Linnaeus University @linnaeus-econ.bsky.social

Keynote Speakers:

Jonas Hjort

Rohini Somanathan

Paper Submission Deadline: 28 February 2026

Read more here: theeconomicmisfit.com/2026/02/06/n...

27.02.2026 08:18 — 👍 5    🔁 5    💬 0    📌 0
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Today's cool young researcher #econtwitter #econsky is Olle Hammar @linneuni @handels_sse who works on topics including migration, inequality + replication
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23.02.2026 16:01 — 👍 11    🔁 4    💬 2    📌 0

🙏

23.02.2026 20:56 — 👍 0    🔁 1    💬 0    📌 0

⏰ Only one week left to apply! Submit your papers and join us for a great conference in Växjö in June! 😎

21.02.2026 18:36 — 👍 2    🔁 2    💬 0    📌 0
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Nordic Conference in Development Economics 2026 | The Economic Misfit Welcome to the 24th Nordic Conference in Development Economics (NCDE) which will be held in Växjö, Sweden, on June 16–17, 2026. This yearly conference serves as a meeting point for development economi...

📢 Call for Papers: Nordic Conference in Development Economics 2026 (NCDE)

Keynote Speakers:

Jonas Hjort

Rohini Somanathan

Read more here: theeconomicmisfit.com/2026/02/06/n...

18.02.2026 11:45 — 👍 4    🔁 2    💬 0    📌 0
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Ny rapport: Skilda normer delar Sverige Vilka beteenden som är socialt accepterade skiljer sig mellan utsatta områden och övriga Sverige. Det kan handla om exempelvis att visa sin religiösa ...

📺✨ Earlier this week @ollehammar.bsky.social was interviewed in TV4 Nyheterna 👇

13.02.2026 17:34 — 👍 1    🔁 1    💬 0    📌 0
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New Discussion Paper from RFBerlin! Mikael Elinder, Oscar Erixson, and @ollehammar.bsky.social examine how the invasion of Ukraine affected sentiments in Russia. How do major geopolitical events shape public attitudes?
🔗 www.rfberlin.com/wp-content/u...

13.02.2026 16:56 — 👍 3    🔁 2    💬 0    📌 0
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Imorse gästade jag TV4 Nyhetsmorgon för att prata integration och värderingar: www.youtube.com/watch?v=uH_5...

11.02.2026 22:45 — 👍 5    🔁 2    💬 0    📌 0
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Förhoppningar om framtiden inkluderar gärna fred i Ukraina. Bortsett från återkommande möten mellan toppledare närs en förhoppning i väst om att det inhemska stödet för styret i Kreml ska… | Institute... Förhoppningar om framtiden inkluderar gärna fred i Ukraina. Bortsett från återkommande möten mellan toppledare närs en förhoppning i väst om att det inhemska stödet för styret i Kreml ska undermineras...

"Putin’s support increased despite the war" — @futures-studies.bsky.social reports about a study by @ollehammar.bsky.social and co-authors 👇

05.02.2026 17:58 — 👍 2    🔁 2    💬 0    📌 0

"Det blir som en ny slags klasskillnad, mellan bostadsägare och de som hyr sina bostäder", säger @ollehammar.bsky.social, nationalekonom som forskar på förmögenhet och ojämlikhet i Sverige.

02.02.2026 20:46 — 👍 2    🔁 1    💬 0    📌 0

👏 Huge congratulations to @s-stantcheva.bsky.social (who recently also became affiliated with our new Linnaeus University Centre for Equality of Opportunity and Big Data Policy Analysis)! 🤩

20.01.2026 16:16 — 👍 2    🔁 1    💬 0    📌 0
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🚨 Call for Papers 🚨 We are pleased to invite submissions to Linnaeus Inequality Summit, a new annual research conference organized by Linnaeus University Centre of Excellence Equality of Opportunity and Big Data Policy Analysis. The conference will take place on June 2-3, 2026, in Växjö, Sweden.

16.01.2026 13:11 — 👍 4    🔁 5    💬 1    📌 1
Following the invasion of Ukraine, Putin’s approval jumped by 13 percentage points – an effect echoed in Gallup data showing a 25 percentage point rise between 2021 and 2022. Crucially, this was not confined to any one group: men and women, young and old, rich and poor all showed similar surges. Only Muscovites showed no significant change. It is a common hope that Russia’s war with Ukraine will erode domestic support for the Kremlin. This column uses individual-level survey data to show instead that the invasion produced a sharp and enduring surge in pro-Kremlin sentiment. The subsequent partial mobilisation only briefly depressed support. Russians living abroad, however, became markedly more critical of Putin following the invasion. The findings suggest that hopes for regime change from within, driven by public war-weariness, are likely misplaced at least in the near term.

Following the invasion of Ukraine, Putin’s approval jumped by 13 percentage points – an effect echoed in Gallup data showing a 25 percentage point rise between 2021 and 2022. Crucially, this was not confined to any one group: men and women, young and old, rich and poor all showed similar surges. Only Muscovites showed no significant change. It is a common hope that Russia’s war with Ukraine will erode domestic support for the Kremlin. This column uses individual-level survey data to show instead that the invasion produced a sharp and enduring surge in pro-Kremlin sentiment. The subsequent partial mobilisation only briefly depressed support. Russians living abroad, however, became markedly more critical of Putin following the invasion. The findings suggest that hopes for regime change from within, driven by public war-weariness, are likely misplaced at least in the near term.

It is a common hope that Russia's war in Ukraine will erode domestic support for the Kremlin. However, survey data show that the invasion of Ukraine produced a sharp and enduring surge in pro-Kremlin sentiment in Russia.
M Elinder, O Erixson, @ollehammar.bsky.social
cepr.org/voxeu/column...
#EconSky

12.01.2026 10:08 — 👍 6    🔁 5    💬 0    📌 0

Read our commentary on ”Gender Bias in Parental Attitude”, now out in print! 👇 @i4replication.bsky.social

09.01.2026 19:40 — 👍 3    🔁 0    💬 0    📌 0

Join us for NCDE 2026 in Växjö! Submissions now open! 👇

09.01.2026 17:10 — 👍 4    🔁 0    💬 0    📌 0
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👋 Join the launch of the new Center for Migration and Integration Research at @sthlmschoolofecon.bsky.social on January 29! With me, @linlerpold.bsky.social, @lisapelling.bsky.social, and many more! forms.office.com/pages/respon...

08.01.2026 21:09 — 👍 4    🔁 3    💬 0    📌 0
Center for Migration and Integration Research: A multistakeholder Arena - hhs.se - Stockholm School of Economics The Center for Migration and Integration Research conducts and disseminates cross-disciplinary social science research on how migration regimes and regulations, business models and working conditions, and social and professional networks interact to shape integration and social sustainability. Sustainable integration is supported by understanding the interplay between rights and responsibilities, labor conditions, and social inclusion.

🎉 New year, new gig! 🎉 I'm very excited to (part-time) join the brand new Center for Migration and Integration Research at @sthlmschoolofecon.bsky.social! 🥳 www.hhs.se/en/research/...

05.01.2026 12:17 — 👍 6    🔁 0    💬 0    📌 0
How foreign wars can consolidate authoritarian power: Evidence from Russia’s invasion of Ukraine It is a common hope that Russia’s war with Ukraine will erode domestic support for the Kremlin. This column uses individual-level survey data to show instead that the invasion produced a sharp and enduring surge in pro-Kremlin sentiment. The subsequent partial mobilisation only briefly depressed support. Russians living abroad, however, became markedly more critical of Putin following the invasion. The findings suggest that hopes for regime change from within, driven by public war-weariness, are likely misplaced at least in the near term.

cepr.org/voxeu/column...

29.12.2025 12:14 — 👍 1    🔁 0    💬 0    📌 0
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🚨 We have a new VoxEU column @voxeu.org on 🇷🇺🇺🇦 ”How foreign wars can consolidate authoritarian power: Evidence from Russia’s invasion of Ukraine”: cepr.org/voxeu/column... (w/ @mikaelelinder.bsky.social & Oscar Erixson)

29.12.2025 12:13 — 👍 11    🔁 3    💬 1    📌 0
Norwegian University of Science and Technology - NTNU Norwegian University of Science and Technology. Located in Trondheim, Gjøvik and Ålesund. Specializing in technology and the natural sciences. 40 000 students.

📢🚨 PhD position in my new "@welgain.bsky.social" project 🚨 📢

I am looking for a 🎓 PhD student 🎓 interested in impact evaluation, welfare programs, labor & public economics, social policy & inequality, to work with me at NTNU in Trondheim (www.ntnu.edu). (1/3) 👇

23.12.2025 18:37 — 👍 14    🔁 15    💬 1    📌 1

The #IIPF2026 Call for Papers is out!
👉 www.iipf.org/papers/Call%...
Submit your public finance paper by Feb. 15, 2026.

Further information on the congress at www.iseg.ulisboa.pt/en/event/iipf/

Organizers at ISEG 👇 and Scientific Chairs Naomi Feldman and @dforemny.bsky.social

#EconConf #EconSky

17.12.2025 10:22 — 👍 9    🔁 10    💬 2    📌 2

🎉 Good news! We have received funding from Handelsbanken's research foundations for organizing the Nordic Conference in Development Economics (NCDE) 2026 at @linnaeus-econ.bsky.social in Växjö! 🙏 Save the dates: June 15-17. More info soon! w/ @erikprawitz.bsky.social & @jakobenlund.bsky.social

16.12.2025 10:27 — 👍 16    🔁 5    💬 1    📌 0
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Don’t Panic: A Researcher’s Guide to Replication Packages Episode 1: A New README Who Needs a README? Imagine coming across a really cool paper in a top journal. The kind of paper you wish you wrote yourself; the…

🚨New blog post: Replicators, rejoice! Episode 1 of the new series is out: “A New README.” A practical guide to transforming messy project folders into clear, well-structured documentation that strengthens transparency and reproducibility.

See more at
i4replication.org/dont-panic-a...

08.12.2025 20:13 — 👍 12    🔁 7    💬 0    📌 0
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This Editorial Note (@sararcurran.bsky.social & @fertmortmig.bsky.social), Commentary (@ollehammar.bsky.social et al) & Response (Begum et al) address journal editorial processes & focus on issues raised regarding the 2018 piece “Gender Bias in Parental Attitude.” read.dukeupress.edu/demography/a...

08.12.2025 18:09 — 👍 5    🔁 3    💬 0    📌 0

Thanks to the external referees and editors @readdemography.bsky.social! 🙏

05.12.2025 21:43 — 👍 2    🔁 0    💬 0    📌 0
Editorial Note Regarding Begum et al. (2018), Hammar et al. (2025), and Begum et al. (2025) | Demography | Duke University Press

You can also read the response doi.org/10.1215/0070..., the editorial note doi.org/10.1215/0070... and the original article doi.org/10.1007/s135... - and make up your own mind about our concerns 🧠

05.12.2025 21:43 — 👍 2    🔁 0    💬 1    📌 0
A Commentary on “Gender Bias in Parental Attitude: An Experimental Approach” by Begum, Grossman, and Islam (2018) | Demography | Duke University Press

🚨 Our comment on Begum, Grossman & Islam (2018) is now out in Demography @readdemography.bsky.social (w/ @carlbonander.bsky.social, Bensch, @nikljako.bsky.social & Brodeur @i4replication.bsky.social): doi.org/10.1215/0070...

05.12.2025 21:43 — 👍 6    🔁 3    💬 1    📌 1

Happy to announce a 4th edition of the Workshop in Economic History in Uppsala, with the great @essobecker.bsky.social as keynote! Workshop takes places on May 28-29, 2026, in Uppsala. Apply by January 31, 2026.

Here is the Cfp: www.dropbox.com/scl/fi/6xdmp...

01.12.2025 10:31 — 👍 14    🔁 8    💬 0    📌 3