Sign in

Olle Hammar

@ollehammar.bsky.social
2.1K followers 1.1K following 147 posts

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

PostsRepliesMedia
Reposted by Olle Hammar
ROCKWOOL Foundation Berlin @rfberlin.bsky.social · 16h
📢 Call for papers is now open! The RFBerlin Migration Forum returns for a third year, in Berlin on 18–19 March 2027. Deadline 8 November. Details & submission: buff.ly/3ztcmmo
013
Olle Hammar @ollehammar.bsky.social · 29/09/2026
Jag har läst @fredrikkopsch.bsky.social bok Utvisad 📖 Läs min recension i senaste numret av @ekonomiskdebatt.bsky.social 👉 www.nationalekonomi.se/artikel/de-u...
074
Olle Hammar @ollehammar.bsky.social · 25/09/2026
🚨 The Center for Migration and Integration Research (CMIR) at Stockholm School of Economics @sthlmschoolofecon.bsky.social is looking for a postdoctoral researcher 👇
hhs.varbi.com
Post-doc position at the Center for Migration and Integration at the Stockholm School of Economics (SSE)
About the Center for Migration and Integration Research  The Center for Migration and Integration Research (CMIR), housed at the SSE House of Governance and Public Policy (GaPP), aims to create a pla
011
Reposted by Olle Hammar
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. 🧵
1149
Olle Hammar @ollehammar.bsky.social · 21/09/2026
Imorse var jag med i P4 Kalmar och pratade miljardärer och förmögenhetsojämlikhet. Lyssna här 👉 www.sverigesradio.se/play/avsnitt...
031
Reposted by Olle Hammar
Dagens Nyheter [Unofficial] @dn.se.web.brid.gy · 18/09/2026
dn.se
DN Debatt. ”Här är vad de egentligen menar när de talar om ’röstboskap’”
DN DEBATT. Just nu pågår en debatt om huruvida muslimska röster tippade över valresultatet till vänstersidans fördel. När människor med utländsk bakgrund inte röstar är de ett tecken på misslyckad integration, men när de inte röstar precis som ni vill utmålas de plötsligt som ett hot. Hur ska ni ha det? skriver fem forskare vid Handelshögskolan i Stockholm.
011
Reposted by Olle Hammar
Erik Mohlin @karlerikmohlin.bsky.social · 16/09/2026
Traditionen bjuder mig att rapportera utdelningen från Vetenskapsrådet till nationalekonomi, sociologi och statsvetenskap. @ollehammar.bsky.social har gjort grafen. Siffror på beviljandegrad från i år är inte tillgängliga än.
011
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 14/09/2026
This week our department seminar series is resuming for the new semester! 🍁 First out is Alessandro Toppeta @sofi.su.se, who will present his paper "High School Majors and Cognitive Skill Development" tomorrow Tuesday! Welcome to Växjö, Alessandro! 👋
sites.google.com
Alessandro Toppeta
Welcome!
021
Reposted by Olle Hammar
Institute for Replication @i4replication.bsky.social · 14/09/2026
It only took us 5 years, but I4R finally has a newsletter. 🎉 We’ll use it to share new studies, Replication Games, research, events, podcasts, and other updates from the Institute for Replication. Subscribe here: www.i4replication.org/newsletter
075
Olle Hammar @ollehammar.bsky.social · 10/09/2026
Nu finns Migrationsinfo för alla online! Där kan ni bland annat läsa mina kapitel om "Utrikes föddas demografi och värderingar" och "Vilka vill flytta till Sverige?". Läs den här 👉 www.fores.se/publikatione...
fores.se
Migrationsinfo för alla — Fores
Migrationsinfo för alla är fylld av relevant statistik och klargörande fakta om migration och integration i Sverige, EU och världen. Boken är ett stöd för beslutsfattare som söker faktabaserad informa...
022
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 10/09/2026
📚 Migration information for everyone 📚 Fores has published a new edition of their book "Migrationsinfo för alla" including chapters by Mats Hammarstedt and @ollehammar.bsky.social - Read it here 👉 www.fores.se/publikatione...
fores.se
Migrationsinfo för alla — Fores
Migrationsinfo för alla är fylld av relevant statistik och klargörande fakta om migration och integration i Sverige, EU och världen. Boken är ett stöd för beslutsfattare som söker faktabaserad informa...
011
Olle Hammar @ollehammar.bsky.social · 21/08/2026
På måndag är det boksläpp för Fores nya infoböcker! Jag är med och diskuterar migration med @annikahirvonen.bsky.social (MP): www.fores.se
121
Reposted by Olle Hammar
Lars Sund @lasse2.bsky.social · 20/08/2026
"Den som vill försvara svenska värderingar bör börja med att inte tvinga någon till dem." Kloka ord av debattören. Inte bara människor utan även värderingar integreras över tid.
dn.se
Olle Hammar: Att prata om invandrares homofobi är att kasta sten i glashus
Regeringen slår larm om invandrares homofobi. Men än i dag sticker också Kristdemokraternas och Sverigedemokraternas väljare ut.
0215
Reposted by Olle Hammar
Sandy Black @econsandy.bsky.social · 19/08/2026
The Society of Labor Economists is piloting a new mentoring program intended to provide small group mentoring, providing advice on how to improve research and navigate the publishing process. We are seeking both mentors and mentees--apply here! www.sole-jole.org/sole-mentoring
sole-jole.org
SOLE Mentoring
02316
Reposted by Olle Hammar
Janet Gornick @janetgornick.bsky.social · 17/08/2026
Interested in spending 2 years at the Stone Center in NYC, studying inequality? See our call for postdoc applications. Two 2-year positions, starting Aug 2027. One focused on wealth inequality, the other more broadly on economic inequality. Apply by Nov. 2! 🍎 stonecenter.gc.cuny.edu/applications...
stonecenter.gc.cuny.edu
Applications Are Open for Two Postdoctoral Positions at the GC CUNY Stone Center - Stone Center on Socio-Economic Inequality
The Stone Center on Socio-Economic Inequality is seeking applicants for a ninth cohort of postdoctoral scholars. These full-time, two-year positions will begin in August 2026.
02224
Reposted by Olle Hammar
Rickard Olseke @migration.se · 19/08/2026
Att prata om invandrares homofobi är att kasta sten i glashus, skriver forskaren @ollehammar.bsky.social
dn.se
Olle Hammar: Att prata om invandrares homofobi är att kasta sten i glashus
Regeringen slår larm om invandrares homofobi. Men än i dag sticker också Kristdemokraternas och Sverigedemokraternas väljare ut.
0289
Reposted by Olle Hammar
Martin Nordin @martinnordin.bsky.social · 19/08/2026
Mycket bra nyansering om värderingar och homofobi. Problematiskt, men man ha i bakhuvudet att ”1990 svarade 65 procent av svenskarna… att homosexualitet inte är acceptabelt” www.dn.se/kultur/olle-...
dn.se
Olle Hammar: Att prata om invandrares homofobi är att kasta sten i glashus
Regeringen slår larm om invandrares homofobi. Men än i dag sticker också Kristdemokraternas och Sverigedemokraternas väljare ut.
0104
Olle Hammar @ollehammar.bsky.social · 19/08/2026
Jag skriver om svenska värderingar i @dagensnyheter.bsky.social 🇸🇪 www.dn.se/kultur/olle-...
dn.se
Olle Hammar: Att prata om invandrares homofobi är att kasta sten i glashus
Regeringen slår larm om invandrares homofobi. Men än i dag sticker också Kristdemokraternas och Sverigedemokraternas väljare ut.
16214
Reposted by Olle Hammar
Association of Swedish Development Economists @aswede.bsky.social · 18/08/2026
Join us for ASWEDE's 11th annual conference in Development Economics! November 16-17 at Marholmen in the Roslagen archipelago, an hour from Stockholm. Deadline: October 2. Open to PhD students and senior researchers. Details below. #ASWEDEConference #DevelopmentEconomics
023
Olle Hammar @ollehammar.bsky.social · 17/08/2026
In Dublin 🇮🇪 for #EEA @eeanews.bsky.social @ucddublin.bsky.social presenting our new paper on wealth inequality in Sweden 💰🇸🇪 - come join the session at 11:00 tomorrow Tuesday in OB E1.19! 👋 www.eea-esem-congresses.org/sessions/pen...
040
Reposted by Olle Hammar
Olle Hammar @ollehammar.bsky.social · 12/07/2025
Apropå svenska värderingar. 🇸🇪 Här en variant av kulturkartan uppdelad på olika partiers väljare. Mest osvenska värderingar hos Sverigedemokraterna och Kristdemokraterna. (Data från WVS/@evs-values.bsky.social 2017.)
34422
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 11/08/2026
More millionaires and bigger fortunes – but lower relative inequality 💰📈📉 Read about @ollehammar.bsky.social and colleagues' new research on wealth inequality in Sweden 👉 www.lnu.se/en/meet-linn...
042
Reposted by Olle Hammar
Christian Lindell @lindellch.bsky.social · 17/07/2026
Alex Voronovs (@alexvoronov.bsky.social ) och min bok "Den långa bluffen - Myter om Sverige, arbete och invandring" har en egen websajt på denlangabluffen.se . Där har vi nu samlat ett urval av recensioner: denlangabluffen.se/recensioner....
denlangabluffen.se
3  Recensioner – Den långa bluffen
1179
Reposted by Olle Hammar
The Review of Economic Studies (REStud) @reveconstudies.bsky.social · 01/07/2026
🚨🚨 NEW ECONOMICS JOURNAL 🚨🚨 We are excited to announce the launch of The Review of Economic Studies: Insights, a new open-access journal in the REStud family. Mission: publish concise, high-quality research on important questions across economics and economic policy.🧵1/13
17941
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 25/06/2026
Last week, we organized the 24th Nordic Conference in Development Economics in Växjö, Sweden, with over 100 participants from all over the world! Yesterday, the @ideadevecon.bsky.social was launched bringing development economists together globally! Join and support this great initiative! 🙌
051
Reposted by Olle Hammar
International Development Economics Association @ideadevecon.bsky.social · 24/06/2026
Welcome to IDEA!
23924
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 17/06/2026
🤩 New top publication! @jonaskolsrud.bsky.social's paper "Taxing Top Wealth: Migration Responses and their Aggregate Economic Implications" (with Jakobsen, Kleven, Landais & Muñoz) is now forthcoming in the American Economic Review @aeajournals.bsky.social! 👏 www.aeaweb.org/articles?id=...
aeaweb.org
Taxing Top Wealth: Migration Responses and their Aggregate Economic Implications
(Forthcoming Article) - Using administrative data from Scandinavian countries, we provide evidence on international migration responses to wealth taxes and evaluate their aggregate economic implicatio...
074
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 17/06/2026
It's a wrap - 3 days, 100 participants, 20 countries! Thanks to everyone who came and made NCDE 2026 such a great success! 🙌
063
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 16/06/2026
The 24th Nordic Conference in Development Economics (NCDE 2026) in Växjö is now on! ☀️ See full program here: www.lnu.se/contentasset...
062
Olle Hammar @ollehammar.bsky.social · 15/06/2026
Thanks for having me on the Policy Implications podcast @olhazadorozhna.bsky.social! Hear our - unfortunately very timely - discussion on Russian support for the war in Ukraine here 👇
142
Reposted by Olle Hammar
Institute for Replication @i4replication.bsky.social · 12/06/2026
📢 Call for Papers! We are partnering with the Journal of Economic Surveys on a special issue: Reproducibility and Meta-Science in Economics. Submission deadline: 1 March 2027. Details in thread 🧵
1811
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 05/06/2026
🙏 @allie-green.com @saralowes.bsky.social @gjiang.bsky.social @khmusen.bsky.social @mettefoged.bsky.social @ollehammar.bsky.social @marielleappelkvist.bsky.social @jakobenlund.bsky.social @fanniforslind.bsky.social @jonaskolsrud.bsky.social @jpeternilsson.bsky.social @saravarn.bsky.social et al!
1102
Olle Hammar @ollehammar.bsky.social · 03/06/2026
☀️ I had a great time participating in the inaugural Linnaeus Inequality Summit together with an impressive group of researchers: lnu.se/en/meet-linn... 🇫🇷 Next up, World Inequality Conference @wid.world @pse.bsky.social: inequalitylab.world/en/event/wor...
010
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 02/06/2026
Linnaeus Inequality Summit is on! ☀️ Now with a fascinating keynote speech by Nico Voigtländer (UCLA) on "De-Polarizing Politics"! 🤩
074
Olle Hammar @ollehammar.bsky.social · 29/05/2026
🥳 New publication in @pnas.org! Happy to be part of this big experiment on AI and reproducibility led by @i4replication.bsky.social! www.pnas.org/doi/10.1073/...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
0112
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 29/05/2026
🎉 New publication in @pnas.org including three co-authors from our department - Joakim Jansson, Erwan Dujeancourt & @ollehammar.bsky.social! 👏 doi.org/10.1073/pnas...
doi.org
AI-assisted teams outperform AI-led teams but not human-only teams in assessing research reproducibility in quantitative social science | PNAS
Large Language Models (LLMs) such as ChatGPT are transforming how scientists conduct and validate research, offering promise as tools to improve sc...
052
Olle Hammar @ollehammar.bsky.social · 28/05/2026
Imorgon kommer jag att vara på Järvaveckan och prata om kulturell integration! Fredag 29 maj kl 13-14 i tält E18. Kom förbi! jarvaveckan.se/tent-activit...
041
Reposted by Olle Hammar
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...
1126
Olle Hammar @ollehammar.bsky.social · 24/05/2026
💰⚠️ Sedan förmögenhetsskatten avskaffades 2007 har vi inte kunnat mäta förmögenhetsojämlikheten i Sverige. Vi har ägnat det senaste decenniet åt att bygga upp ett nytt förmögenhetsregister. Nu vet vi hur det ser ut! Läs om våra resultat på DN Debatt 📈📉 - www.dn.se/debatt/allt-...
dn.se
DN Debatt. ”Allt fler miljardärer – men klyftorna har ändå inte vuxit”
DN Debatt. Ny databas visar att Sverige och svenskar har blivit rikare och samtidigt mer jämlikt vad gäller förmögenheter, skriver fyra nationalekonomer.
293
Olle Hammar @ollehammar.bsky.social · 21/05/2026
Program out for the 1st Linnaeus Inequality Summit 🤩
041
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 21/05/2026
Day 2 includes presentations by Michele Valsecchi (World Bank), @khmusen.bsky.social (@columbiauniversity.bsky.social), Omry Yoresh (LSE), @mettefoged.bsky.social (@ucph.bsky.social), and @ollehammar.bsky.social (@linnaeus-econ.bsky.social)! 🙌
141
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 21/05/2026
And to @ollehammar.bsky.social for 1 million SEK for the project "Wealth in Sweden: Self-Made or Inherited?" (with @danielwaldenstrom.bsky.social)! 🥳
021
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 20/05/2026
The program for the 24th Nordic Conference in Development Economics that we'll be organizing in June is out! ☀️😎 We have an awesome lineup with 3 keynotes, 83 presenters, and 104 participants from over 20 countries coming to Växjö! 🤩 See the full program here 👉 lnu.se/contentasset...
lnu.se
075
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 07/05/2026
🎉 Our department is growing! We're extremely happy to welcome our newest colleague, Christine Alamaa, who is joining us as a postdoc! Christine defended her PhD thesis @sofi.su.se in December 2025, and her research lies at the intersection of labor, behavioral, and gender economics. Very welcome! 🎉
christinealamaa.com
Christine Alamaa
051
Reposted by Olle Hammar
Department of Economics and Statistics, Linnaeus University @linnaeus-econ.bsky.social · 22/04/2026
🎉 We've now closed the submission for the Nordic Conference in Development Economics 2026 and sent out acceptance letters to all presenters! Congratulations to those accepted! We're very humbled by receiving 250+ submissions. Thanks to all applicants and for great work by the scientific committee! 👇
141
Olle Hammar @ollehammar.bsky.social · 22/04/2026
We have a new @rfberlin.bsky.social Research Insight! Read it here 👇
041
Reposted by Olle Hammar
Institute for Replication @i4replication.bsky.social · 13/04/2026
🚨 New AI Games round is live 🚨 Our first AI Games paper is now out at a top general interest journal (see preprint here: www.econstor.eu/bitstream/10... So… we’re launching the next stage 👇
11212
Olle Hammar @ollehammar.bsky.social · 10/04/2026
Today, I participated in Radio Sweden Weekly discussing the government's proposed law change that will block refugees from being able to get permanent residence in Sweden, and what impact it could have on potential migration flows in the future 👇
sverigesradio.se
Radio Sweden Weekly: Citizenship changes to be discussed by MPs | Radio Sweden | Sveriges Radio
This coming Tuesday, the government's citizenship bill will be examined by a parliamentary committee which will then take a position on the reforms.
083
Reposted by Olle Hammar
Nature @nature.com · 08/04/2026
Nature research paper: Reproducibility and robustness of economics and political science research go.nature.com/3QdKP93
go.nature.com
Reproducibility and robustness of economics and political science research - Nature
Robustness checks and reproduction of analyses with existing and updated data based on 110 articles in economics and political science journals with data and code-sharing requirements found high levels of robustness and reproducibility and determined that robustness was not dependent on author characteristics or data availability.
0236
Olle Hammar @ollehammar.bsky.social · 03/04/2026
Jag har skrivit ett gästinlägg på Ekonomistas om det senaste inom replikeringslitteraturen 👇
ekonomistas.se
Reproducerbarhet och robusthet i nationalekonomi och statsvetenskap
Kan man lita på publicerad nationalekonomisk forskning? Det är en fråga som diskuterats livligt sedan den så kallade replikationskrisen slog hårt mot psykologin för drygt ett decennium sedan. Detta…
031