Jan Marcus
@janmarcus.de
Professor for Applied Statistics, Freie Universität Berlin; education and health economist; table tennis player
http://janmarcus.de
http://janmarcus.de
Pinned
Jan Marcus
@janmarcus.de
· Nov 29
Replication code availability over time and across fields: Evidence from the German Socio‐Economic Panel
Providing replication code is an inexpensive way to facilitate reproducibility. However, little is known about the extent of replication code provision. Therefore, we examine the availability of repl....
doi.org
🧵 Excited to share: "Replication Code Availability over Time and Across Fields", was just accepted by #EconomicInquiry! 🚀 Here's what @lukasfink.bsky.social and I uncovered about replication code availability for publications based on the German Socio-Economic Panel #SOEP 📈📉
doi.org/10.1111/ecin...
doi.org/10.1111/ecin...
Reposted by Jan Marcus
🗓️ Thursday, November 27:
We are very happy to have Efrem Castelnuovo at the Research Seminar in Economics at @freieuniversitaet.bsky.social. He will present his work on „The Inflation-Uncertainty Amplifier“
#EconFUBerlin #RseFUBerlin
We are very happy to have Efrem Castelnuovo at the Research Seminar in Economics at @freieuniversitaet.bsky.social. He will present his work on „The Inflation-Uncertainty Amplifier“
#EconFUBerlin #RseFUBerlin
November 24, 2025 at 10:29 AM
🗓️ Thursday, November 27:
We are very happy to have Efrem Castelnuovo at the Research Seminar in Economics at @freieuniversitaet.bsky.social. He will present his work on „The Inflation-Uncertainty Amplifier“
#EconFUBerlin #RseFUBerlin
We are very happy to have Efrem Castelnuovo at the Research Seminar in Economics at @freieuniversitaet.bsky.social. He will present his work on „The Inflation-Uncertainty Amplifier“
#EconFUBerlin #RseFUBerlin
Reposted by Jan Marcus
www.uni-hamburg.de/stellenangeb... Unser Fachbereich hat eine unbefristete Stelle E13 in der VWL-Lehre zu besetzen. Gerne retweeten und bis 30.11. bewerben.
Ausschreibung
www.uni-hamburg.de
November 21, 2025 at 9:53 AM
www.uni-hamburg.de/stellenangeb... Unser Fachbereich hat eine unbefristete Stelle E13 in der VWL-Lehre zu besetzen. Gerne retweeten und bis 30.11. bewerben.
Reposted by Jan Marcus
Happy to share that our research brief on housing space inequality in Germany will soon be published by the Progressive Politics Research Network!
This work, a collaboration with @sebastiankohl.bsky.social and @simonvoss.bsky.social , digs into who has access to space and how policy can address it.
This work, a collaboration with @sebastiankohl.bsky.social and @simonvoss.bsky.social , digs into who has access to space and how policy can address it.
Next week, with the Progressive Politics Research Network, we are going to publish 8 new research briefs on the politics of housing. While housing has become a huge grievance across Europe, it is often absent from progressive parties‘ agendas. Our group of experts discusses different aspects of this
November 18, 2025 at 12:09 PM
Happy to share that our research brief on housing space inequality in Germany will soon be published by the Progressive Politics Research Network!
This work, a collaboration with @sebastiankohl.bsky.social and @simonvoss.bsky.social , digs into who has access to space and how policy can address it.
This work, a collaboration with @sebastiankohl.bsky.social and @simonvoss.bsky.social , digs into who has access to space and how policy can address it.
Looking forward to your talk, @gregor-pfeifer.bsky.social !
🗓️ Thursday, November 20:
We are very happy to welcome Gregor Pfeifer at the Research Seminar in Economics at @freieuniversitaet.bsky.social . He will present his work on „Abortion Access and Long-Run Household Outcomes: Evidence from Population-Wide Administrative Data“
#EconFUBerlin #RseFUBerlin
We are very happy to welcome Gregor Pfeifer at the Research Seminar in Economics at @freieuniversitaet.bsky.social . He will present his work on „Abortion Access and Long-Run Household Outcomes: Evidence from Population-Wide Administrative Data“
#EconFUBerlin #RseFUBerlin
November 17, 2025 at 11:18 AM
Looking forward to your talk, @gregor-pfeifer.bsky.social !
Reposted by Jan Marcus
If Difference-in-Differences has been on your “to-learn” list, now is your chance to dig in. Our #GESISworkshop with @janmarcus.de takes you from DiD basics to advanced topics like triple differences, synthetic control, and modern estimators — all in R and Stata.
➡️ t1p.de/dif_in_dif_26
➡️ t1p.de/dif_in_dif_26
November 10, 2025 at 10:16 AM
If Difference-in-Differences has been on your “to-learn” list, now is your chance to dig in. Our #GESISworkshop with @janmarcus.de takes you from DiD basics to advanced topics like triple differences, synthetic control, and modern estimators — all in R and Stata.
➡️ t1p.de/dif_in_dif_26
➡️ t1p.de/dif_in_dif_26
Looking forward to teaching this training course on diff-in-diff.
Registration still possible!
Registration still possible!
*Foundations and Advances in Difference-in-Differences* by @janmarcus.de.
🗓️ 03 – 04 February 2026
🏢 Online
🌐 t1p.de/dif_in_dif_26
🗓️ 03 – 04 February 2026
🏢 Online
🌐 t1p.de/dif_in_dif_26
November 8, 2025 at 6:18 AM
Looking forward to teaching this training course on diff-in-diff.
Registration still possible!
Registration still possible!
Reposted by Jan Marcus
🗓️ Thursday, November 6:
We are very happy to have Matthias Doepke at the Research Seminar in Economics at @freieuniversitaet.bsky.social . He will present his work on „Preparing Kids for Capitalism: The Effect of German Reunification“
#EconFUBerlin #RseFUBerlin
We are very happy to have Matthias Doepke at the Research Seminar in Economics at @freieuniversitaet.bsky.social . He will present his work on „Preparing Kids for Capitalism: The Effect of German Reunification“
#EconFUBerlin #RseFUBerlin
November 5, 2025 at 11:55 AM
🗓️ Thursday, November 6:
We are very happy to have Matthias Doepke at the Research Seminar in Economics at @freieuniversitaet.bsky.social . He will present his work on „Preparing Kids for Capitalism: The Effect of German Reunification“
#EconFUBerlin #RseFUBerlin
We are very happy to have Matthias Doepke at the Research Seminar in Economics at @freieuniversitaet.bsky.social . He will present his work on „Preparing Kids for Capitalism: The Effect of German Reunification“
#EconFUBerlin #RseFUBerlin
Reposted by Jan Marcus
🗓️ Thursday, October 30:
We are very happy to welcome Vasyl Golosnoy at the Research Seminar in Economics at @freieuniversitaet.bsky.social . He will present his work on „Combining portfolio rules to improve prediction of global minimum variance portfolio“
#EconFUBerlin #RseFUBerlin
We are very happy to welcome Vasyl Golosnoy at the Research Seminar in Economics at @freieuniversitaet.bsky.social . He will present his work on „Combining portfolio rules to improve prediction of global minimum variance portfolio“
#EconFUBerlin #RseFUBerlin
October 29, 2025 at 8:54 AM
🗓️ Thursday, October 30:
We are very happy to welcome Vasyl Golosnoy at the Research Seminar in Economics at @freieuniversitaet.bsky.social . He will present his work on „Combining portfolio rules to improve prediction of global minimum variance portfolio“
#EconFUBerlin #RseFUBerlin
We are very happy to welcome Vasyl Golosnoy at the Research Seminar in Economics at @freieuniversitaet.bsky.social . He will present his work on „Combining portfolio rules to improve prediction of global minimum variance portfolio“
#EconFUBerlin #RseFUBerlin
Reposted by Jan Marcus
📢 Call for Applications: 2026 PhD Program
Opportunities across four different PhD tracks:
🔹 PhD in Economics
🔹 PhD in Accounting
🔹 PhD in Finance
🔹 PhD in Management
❗ Application Deadline: January 15, 2026
More information👇
berlinschoolofeconomics.de/phd-program/...
#phdcallforapplications
Opportunities across four different PhD tracks:
🔹 PhD in Economics
🔹 PhD in Accounting
🔹 PhD in Finance
🔹 PhD in Management
❗ Application Deadline: January 15, 2026
More information👇
berlinschoolofeconomics.de/phd-program/...
#phdcallforapplications
October 28, 2025 at 4:08 PM
📢 Call for Applications: 2026 PhD Program
Opportunities across four different PhD tracks:
🔹 PhD in Economics
🔹 PhD in Accounting
🔹 PhD in Finance
🔹 PhD in Management
❗ Application Deadline: January 15, 2026
More information👇
berlinschoolofeconomics.de/phd-program/...
#phdcallforapplications
Opportunities across four different PhD tracks:
🔹 PhD in Economics
🔹 PhD in Accounting
🔹 PhD in Finance
🔹 PhD in Management
❗ Application Deadline: January 15, 2026
More information👇
berlinschoolofeconomics.de/phd-program/...
#phdcallforapplications
Reposted by Jan Marcus
Our Leibniz Open Science Day, 'Better Science for Better Policies', is taking place tomorrow in Berlin, with an exciting programme of interesting papers - check them out. The meta-scientific community is really taking off! www.zbw.eu/de/ueber-uns...
October 26, 2025 at 11:40 AM
Our Leibniz Open Science Day, 'Better Science for Better Policies', is taking place tomorrow in Berlin, with an exciting programme of interesting papers - check them out. The meta-scientific community is really taking off! www.zbw.eu/de/ueber-uns...
🎉 Yesterday, we had the pleasure of welcoming our new tenure-track Assistant Professor @philippbach.bsky.social at @freieuniversitaet.bsky.social
In his talk, Philipp gave an inspiring overview of his work in the field of #CausalMachineLearning: method development, software tools, and applications.
In his talk, Philipp gave an inspiring overview of his work in the field of #CausalMachineLearning: method development, software tools, and applications.
October 24, 2025 at 7:13 AM
🎉 Yesterday, we had the pleasure of welcoming our new tenure-track Assistant Professor @philippbach.bsky.social at @freieuniversitaet.bsky.social
In his talk, Philipp gave an inspiring overview of his work in the field of #CausalMachineLearning: method development, software tools, and applications.
In his talk, Philipp gave an inspiring overview of his work in the field of #CausalMachineLearning: method development, software tools, and applications.
You want to see @philippbach.bsky.social and @shushmargaryan.bsky.social in one session?
Come to the welcome event for our new colleague Philipp Bach at @fu-berlin-vwl.bsky.social on Thursday!
Come to the welcome event for our new colleague Philipp Bach at @fu-berlin-vwl.bsky.social on Thursday!
🗓️ Thursday, October 23:
We are very happy to have Philipp Bach and Shushanik Margaryan at the Reasearch Seminar in Economics. They will present their work on „Causal Machine Learning - New Estimation Approaches for Empirical Economics“ and „An Applied Micro Perspective on Causal Machine Learning“
We are very happy to have Philipp Bach and Shushanik Margaryan at the Reasearch Seminar in Economics. They will present their work on „Causal Machine Learning - New Estimation Approaches for Empirical Economics“ and „An Applied Micro Perspective on Causal Machine Learning“
October 22, 2025 at 10:47 AM
You want to see @philippbach.bsky.social and @shushmargaryan.bsky.social in one session?
Come to the welcome event for our new colleague Philipp Bach at @fu-berlin-vwl.bsky.social on Thursday!
Come to the welcome event for our new colleague Philipp Bach at @fu-berlin-vwl.bsky.social on Thursday!
Reposted by Jan Marcus
Next time an institution tells you how seriously it takes research misconduct, ask them if it's *this* seriously. www.bmj.com/content/297/...
October 13, 2025 at 8:12 PM
Next time an institution tells you how seriously it takes research misconduct, ask them if it's *this* seriously. www.bmj.com/content/297/...
Reposted by Jan Marcus
The new semester is here, and so is the Research Seminar in Economics! 🎉
Every Thursday, a guest speaker will share their latest research on various topics. We are starting tomorrow with Oleg Nivievskyi; he will talk about his research on „Impact of Tax Incentives on Industry Performance and Growth“
Every Thursday, a guest speaker will share their latest research on various topics. We are starting tomorrow with Oleg Nivievskyi; he will talk about his research on „Impact of Tax Incentives on Industry Performance and Growth“
October 15, 2025 at 8:38 AM
The new semester is here, and so is the Research Seminar in Economics! 🎉
Every Thursday, a guest speaker will share their latest research on various topics. We are starting tomorrow with Oleg Nivievskyi; he will talk about his research on „Impact of Tax Incentives on Industry Performance and Growth“
Every Thursday, a guest speaker will share their latest research on various topics. We are starting tomorrow with Oleg Nivievskyi; he will talk about his research on „Impact of Tax Incentives on Industry Performance and Growth“
Reposted by Jan Marcus
Took part yesterday in @freieuniversitaet.bsky.social's Replication Games, it was such a nice experience! People were lovely and the work was a very fun challenge.
Thanks to @i4replication.bsky.social and @janmarcus.de for organizing this, it was absolutely worth enduring the ride from Dortmund. 😄
Thanks to @i4replication.bsky.social and @janmarcus.de for organizing this, it was absolutely worth enduring the ride from Dortmund. 😄
October 1, 2025 at 4:40 PM
Took part yesterday in @freieuniversitaet.bsky.social's Replication Games, it was such a nice experience! People were lovely and the work was a very fun challenge.
Thanks to @i4replication.bsky.social and @janmarcus.de for organizing this, it was absolutely worth enduring the ride from Dortmund. 😄
Thanks to @i4replication.bsky.social and @janmarcus.de for organizing this, it was absolutely worth enduring the ride from Dortmund. 😄
Reposted by Jan Marcus
Vielleicht für einige deutschsprachige Ökonomen hier interessant. Am Donnerstag um 14 Uhr erzählen @christiantode1.bsky.social und ich was zu unseren Erfahrungen mit den @coreecon.bsky.social The Economy Büchern in Mikro/Makro Vorlesungen. Der Veranstaltung ist online!
#TeachEcon
#TeachEcon
Community für wissenschaftliches Arbeiten in den Wirtschaftswissenschaften
Wir bieten Dozent:innen und Expert:innen für Informationskompetenz und wissenschaftliches Arbeiten in den Wirtschaftswissenschaften eine Plattform für Vernetzung und den Austausch von Wissen.
www.zbw.eu
September 22, 2025 at 12:17 PM
Vielleicht für einige deutschsprachige Ökonomen hier interessant. Am Donnerstag um 14 Uhr erzählen @christiantode1.bsky.social und ich was zu unseren Erfahrungen mit den @coreecon.bsky.social The Economy Büchern in Mikro/Makro Vorlesungen. Der Veranstaltung ist online!
#TeachEcon
#TeachEcon
Great to see such a strong presence of @fu-berlin-vwl.bsky.social at the @vfsecon.bsky.social's Annual Conference in Cologne – always an inspiring venue for research and exchange!
@danzernatalia.bsky.social @piotrlarysz.bsky.social @philippbach.bsky.social @phaan.bsky.social @simonvoss.bsky.social
@danzernatalia.bsky.social @piotrlarysz.bsky.social @philippbach.bsky.social @phaan.bsky.social @simonvoss.bsky.social
September 16, 2025 at 9:00 AM
Great to see such a strong presence of @fu-berlin-vwl.bsky.social at the @vfsecon.bsky.social's Annual Conference in Cologne – always an inspiring venue for research and exchange!
@danzernatalia.bsky.social @piotrlarysz.bsky.social @philippbach.bsky.social @phaan.bsky.social @simonvoss.bsky.social
@danzernatalia.bsky.social @piotrlarysz.bsky.social @philippbach.bsky.social @phaan.bsky.social @simonvoss.bsky.social
Reposted by Jan Marcus
We're looking forward to hosting the opening of @bsoeberlin.bsky.social' acadmic year @hertieschool.bsky.social on October 8. To join us at this event, which includes (among others) a keynote by Michèle Tertilt on 'The Economics of Women’s Rights', register via👇
www.hertie-school.org/en/events/ev...
www.hertie-school.org/en/events/ev...
September 11, 2025 at 5:58 PM
We're looking forward to hosting the opening of @bsoeberlin.bsky.social' acadmic year @hertieschool.bsky.social on October 8. To join us at this event, which includes (among others) a keynote by Michèle Tertilt on 'The Economics of Women’s Rights', register via👇
www.hertie-school.org/en/events/ev...
www.hertie-school.org/en/events/ev...
🚨 Last chance to join the Berlin Replication Games! Registration closes this Friday, September 12.
Replication Games @i4replication.bsky.social coming to Berlin! @janmarcus.de Register here. www.surveymonkey.ca/r/I4R_Replic...
September 10, 2025 at 7:46 AM
🚨 Last chance to join the Berlin Replication Games! Registration closes this Friday, September 12.
Reposted by Jan Marcus
An interesting moment in German politics. A former minister is indicted for false testimony at at an investigative committee in parlament. He cries WHICH HUNT, i.e., that the indictment is politically motivated.
It will be important how many of his political allies play along with him.
It will be important how many of his political allies play along with him.
Ex-Verkehrsminister Scheuer wegen Falschaussage angeklagt#Eilmeldung
Ex-Verkehrsminister Scheuer wegen Falschaussage angeklagt
Die Berliner Staatsanwaltschaft hat Anklage gegen den ehemaligen Bundesverkehrsminister Scheuer erhoben.
www.tagesschau.de
August 20, 2025 at 8:39 AM
An interesting moment in German politics. A former minister is indicted for false testimony at at an investigative committee in parlament. He cries WHICH HUNT, i.e., that the indictment is politically motivated.
It will be important how many of his political allies play along with him.
It will be important how many of his political allies play along with him.
Reposted by Jan Marcus
I am super happy about the IZA network and DP series having found a new home at @liser.lu . Having visited in the past, I think LISER is the kind of place IZA could (and should ) have been. I wish them all the best!
August 20, 2025 at 3:08 PM
I am super happy about the IZA network and DP series having found a new home at @liser.lu . Having visited in the past, I think LISER is the kind of place IZA could (and should ) have been. I wish them all the best!
Reposted by Jan Marcus
One-year visiting position for advanced female postdocs in Dresden. I am happy to host anyone broadly interested in applied micro. Salary within the German public sector's pay scale (TV-L, E13-E15). Deadline: Sept 15, 2025. Please share widely! 👇
August 15, 2025 at 8:37 AM
One-year visiting position for advanced female postdocs in Dresden. I am happy to host anyone broadly interested in applied micro. Salary within the German public sector's pay scale (TV-L, E13-E15). Deadline: Sept 15, 2025. Please share widely! 👇
Reposted by Jan Marcus
It's been 2 years (+ 1 month) since I left academia. In case anyone is wondering, I have zero regrets. Indeed, I'm living my best life and am so happy I made the leap.
If you're considering leaving too, here are some thoughts on how to explore your options/find a job you'll love...
If you're considering leaving too, here are some thoughts on how to explore your options/find a job you'll love...
August 15, 2025 at 2:55 PM
It's been 2 years (+ 1 month) since I left academia. In case anyone is wondering, I have zero regrets. Indeed, I'm living my best life and am so happy I made the leap.
If you're considering leaving too, here are some thoughts on how to explore your options/find a job you'll love...
If you're considering leaving too, here are some thoughts on how to explore your options/find a job you'll love...
Reposted by Jan Marcus
We extracted all publications in all psychology journals from 2015 to 2025 and looked at their citations.
The modal number of citations of psychology articles is zero.
Identifying errors in just a small number of highly-cited publications will have an outsized impact on scientific knowledge.
The modal number of citations of psychology articles is zero.
Identifying errors in just a small number of highly-cited publications will have an outsized impact on scientific knowledge.
9.2% of all citations go to just 0.32% of psychology articles.
To have the most impact, post-publication peer-review should focus on these influential articles with ≥30 citations per year.
@error.reviews will systemically sample from such articles.
Blog post:
mmmdata.io/posts/2025/0...
To have the most impact, post-publication peer-review should focus on these influential articles with ≥30 citations per year.
@error.reviews will systemically sample from such articles.
Blog post:
mmmdata.io/posts/2025/0...
August 13, 2025 at 4:12 PM
We extracted all publications in all psychology journals from 2015 to 2025 and looked at their citations.
The modal number of citations of psychology articles is zero.
Identifying errors in just a small number of highly-cited publications will have an outsized impact on scientific knowledge.
The modal number of citations of psychology articles is zero.
Identifying errors in just a small number of highly-cited publications will have an outsized impact on scientific knowledge.
Reposted by Jan Marcus
Photo taken at my kid’s robotics class. Same message I tell students when they start coding in their doctorate program 😊
August 14, 2025 at 1:51 PM
Photo taken at my kid’s robotics class. Same message I tell students when they start coding in their doctorate program 😊