Olle Hammar
@ollehammar
Followers
875
Following
5K
Media
60
Statuses
472
Assistant Professor in Economics @linneuni. Researcher @Framtidsstudier. Affiliate @iza_bonn @RF_Berlin. PhD @EconomicsUU. Inequality, migration, replication.
Stockholm, Sverige
Joined June 2009
🥳PUBLICATION ALERT🥳 Very happy to have our paper on "Global Earnings Inequality, 1970-2018" published in The Economic Journal @EJ_RES with @daniwaldenstrom Has the world become more or less equal over the past 50 years? A small thread on a big question 👇 [1/10]
9
80
371
You can also read the response https://t.co/jEL1OniWTM, the editorial note https://t.co/z6NsVJb9wJ and the original article https://t.co/47zT0V8noj - and make up your own mind about our concerns 🧠
read.dukeupress.edu
AbstractParental bias toward children of a particular gender has been widely observed in many societies. Such bias could be due to pure gender preference or differences in earning opportunities and...
1
0
1
🚨 Our comment on Begum, Grossman & Islam (2018) is now out in Demography @ReadDemography (w/ Bonander, @gunther_bensch, @nikljako & Brodeur @I4Replication):
1
0
1
Announcing the 4th edition of the Workshop in Economic History in Uppsala, with Sascha Becker as keynote! Workshop takes places on May 28-29, 2026. Apply by January 31, 2026. Call for papers: https://t.co/YNQX3kj8sH Sign-up form: https://t.co/QOojw1BkzS
0
20
40
Proud to be an @I4Replication Fellow! 💫
📢 We’re thrilled to announce the launch of our new “Research Fellows” program! 🎉 If you’ve contributed to a Replication Game, published in our Discussion Papers series, or helped organize one of our events — you’re invited to join the roster of I4R Research Fellows.
0
0
5
Together w/ @ODISSEI_nl, I4R is organizing CBS Replication Games, re-analyzing 6 papers w/ Dutch administrative microdata! Teams get 1 month of microdata access in Feb 2026, meeting in Utrecht for a three-day hackathon. Interested? Register by Nov 30! https://t.co/hPsVkcrf70
0
1
3
📢 @CESifoNetwork , @dseunivr and @LISER_LC are glad to announce the Nineteenth Winter School on #Inequality and #SocialWelfare Theory (IT19): Inequality and Big Challenges. 👉January 6-10, 2026 👉Alba di Canazei 🇮🇹 👉 Call: https://t.co/KmXivvndb3
1
4
3
Superb research and engagement at ASWEDE's 10th conference. Thanks to everyone who made this event memorable! #ASWEDE2025
0
5
5
ASWEDE’s 10th Annual Conference kicks off tomorrow at Nääs Fabriker! We look forward to sharp presentations and discussions on development economics from PhD students and senior researchers. Program:
0
2
4
En tanke på fars dag till min morfar Lennart Berggren som hade varit 98 år idag och som 25-årig filosofistudent i Lund var den sommarvikarierande visselblåsaren som avslöjade Vipeholmsexperimenten: https://t.co/K3BSnaAvRX
0
0
4
Den årliga rapporteringen 👇
Dagens utdelning från Vetenskapsrådet (VR) till Sveriges nationalekonomer, endast två anslag om totalt 12 miljoner kronor. https://t.co/pwdX8a5PAE Så inget trendbrott
0
2
3
BREAKING NEWS The Royal Swedish Academy of Sciences has decided to award the 2025 Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel to Joel Mokyr, Philippe Aghion and Peter Howitt “for having explained innovation-driven economic growth” with one half to Mokyr
437
5K
12K
🚨 Our comment on Begum, Grossman & Islam (2018) in @ReadDemography is now available as an @I4Replication working paper (w/ @gunther_bensch, @nikljako, Bonander & Brodeur). Read it here 👉 https://t.co/Izvu5Gu2ID
1
0
2
We're hiring! 1 tenure-track assistant professorship. 6 years with full research freedom, competitive pay and low teaching load. All fields considered. Recruitment committee consists of me, @OskarNSkans, Lena Hensvik and @mkaradja. Reach out if you have any questions! There
0
36
138
🚨 We have a comment on Begum et al (2018) forthcoming in Demography - see link below! @I4Replication
We also document changes in language about the randomization between the working paper and published version, and inconsistencies in the authors’ response. See full report (here https://t.co/XjicqgXud8) for more details.
0
2
5
Update 8b: Read 🧵8a and others here #GDRI_rep. Our diagram hints at other studies linked to EER. We refer to many of these studies as the cyclone papers. We reached out to the Journal of Risk & Uncertainty about this paper: “Natural disaster and risk-sharing behavior”...
3
4
14
#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) 🧵
1
8
33
Having a good time at the @IIPF_org Annual Congress in Nairobi! 🇰🇪
Our 81s annual congress took off! 🚀 Welcome 300 participants at @ExperienceUSIU Nairobi, Kenya! Introductions by IIPF President Jim Hines, Scientific Chairs @fgerard_BE @ShafikHebous , Local Organizers @dr_njuguna @DinaPomeranz . Thanks for making this event happen!
0
3
15