Jan Marcus
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Jan Marcus
@janmarcus.de
2.5K followers 560 following 74 posts

Professor for Applied Statistics, Freie Universität Berlin; education and health economist; table tennis player

http://janmarcus.de

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janmarcus.de
Jan Marcus @janmarcus.de · Nov 29
🧵 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...
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

janmarcus.de
Jan Marcus @janmarcus.de · 16d
Congratulations, Henning! Very well deserved!

Reposted by Dennis Wesselbaum, Jan Marcus

i4replication.bsky.social
Institute for Replication @i4replication.bsky.social · 18d
🚨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...
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…
i4replication.org

Reposted by Jan Marcus

philippbach.bsky.social
Philipp Bach @philippbach.bsky.social · 18d
📣 Announcing the First DoubleML User Survey! 📊

We’re excited to launch the first DoubleML User Survey! We’d love to hear from all prospective, new, or experienced users of DoubleML in Python or R.

🔗Please take part here: forms.gle/HjZsWgrF5UEF...

#EconSky #CausalSky #dataSkyence #Python #R
The DoubleML rhino shouting out "User Survey", available via https://forms.gle/HjZsWgrF5UEFUyDX9

Reposted by Richard S.J. Tol, Jan Marcus, Paul Nightingale

jrgptrs.bsky.social
Jörg Ankel-Peters @jrgptrs.bsky.social · 22d
Special issue on meta-science in Journal of Economic Psychology! Topics covered among others: expert-informed approaches, normative biases and crowd-science. Submitted papers evaluated & published on rolling basis. @i4replication.bsky.social www.sciencedirect.com/special-issu...

Reposted by Jan Marcus

fu-berlin-vwl.bsky.social
FU Berlin Economics @fu-berlin-vwl.bsky.social · 25d
🗓️ Thursday, December 4:
We are very happy to have Arianna Ornaghi at the Research Seminar in Economics at @freieuniversitaet.bsky.social. She will present her work on „Media Consolidation“
#EconFUBerlin #RseFUBerlin

Reposted by Jan Marcus

cyganrehm.bsky.social
Kamila Cygan-Rehm @cyganrehm.bsky.social · 25d
CfP 📢 Join us & our fantastic keynote speaker @rginja.bsky.social for the 15th Dresden Workshop on Labor Economics and Social Policy (May 21-22, 2026). Looking forward! Deadline for submissions: Feb 15, 2026👇
www.ifo.de/veranstaltun... @tudresden.bsky.social @cesifo.org
15th ifo Dresden Workshop on Labor Economics and Social Policy | ifo Institut
We specifically encourage PhD students and post-doctoral researchers to submit their current research. Each paper will be allocated 45 minutes, to be divided between the presentation, a discussion by an assigned workshop participant and a general discussion.
www.ifo.de

Reposted by Jan Marcus

fu-berlin-vwl.bsky.social
FU Berlin Economics @fu-berlin-vwl.bsky.social · Nov 24
🗓️ 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

Reposted by Jörg Peters, Jan Marcus, David A. Jaeger , and 1 more

mariannesaam.bsky.social
Marianne Saam @mariannesaam.bsky.social · Nov 21
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

Reposted by Benjamin Braun, Nazita Lajevardi, Sebastian Kohl , and 1 more

tabouchadi.bsky.social
Tarik Abou-Chadi @tabouchadi.bsky.social · Nov 18
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

janmarcus.de
Jan Marcus @janmarcus.de · Nov 17
Looking forward to your talk, @gregor-pfeifer.bsky.social !
fu-berlin-vwl.bsky.social FU Berlin Economics @fu-berlin-vwl.bsky.social · Nov 17
🗓️ 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

Reposted by Jan Marcus

fu-berlin-vwl.bsky.social
FU Berlin Economics @fu-berlin-vwl.bsky.social · Nov 17
🗓️ 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

Reposted by Jan Marcus, Georg Weizsäcker

gesistraining.bsky.social
GESIS Training @gesistraining.bsky.social · Nov 10
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
GESIS Workshop Foundations and Advances in Difference-in-Differences 03 to 04 February 2026 | Online Jan Marcus (Freie Universität Berlin)

janmarcus.de
Jan Marcus @janmarcus.de · Nov 8
Looking forward to teaching this training course on diff-in-diff.

Registration still possible!
gesistraining.bsky.social GESIS Training @gesistraining.bsky.social · Nov 6
*Foundations and Advances in Difference-in-Differences* by @janmarcus.de.

🗓️ 03 – 04 February 2026
🏢 Online
🌐 t1p.de/dif_in_dif_26

Reposted by Jan Marcus

gesistraining.bsky.social
GESIS Training @gesistraining.bsky.social · Nov 6
*Foundations and Advances in Difference-in-Differences* by @janmarcus.de.

🗓️ 03 – 04 February 2026
🏢 Online
🌐 t1p.de/dif_in_dif_26

Reposted by Jan Marcus

fu-berlin-vwl.bsky.social
FU Berlin Economics @fu-berlin-vwl.bsky.social · Nov 5
🗓️ 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

Reposted by Jan Marcus

fu-berlin-vwl.bsky.social
FU Berlin Economics @fu-berlin-vwl.bsky.social · Oct 29
🗓️ 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

Reposted by Joanna Bryson, Jan Marcus, Tommaso Frattini

bsoeberlin.bsky.social
Berlin School of Economics @bsoeberlin.bsky.social · Oct 28
📢 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

Reposted by Jan Marcus

jrgptrs.bsky.social
Jörg Ankel-Peters @jrgptrs.bsky.social · Oct 26
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...

janmarcus.de
Jan Marcus @janmarcus.de · Oct 24
@fu-berlin-vwl.bsky.social @steinhardt.bsky.social @danzernatalia.bsky.social @pncmohr.bsky.social @gehrkeb.bsky.social @anjaprummer.bsky.social @m-santos-silva.bsky.social

janmarcus.de
Jan Marcus @janmarcus.de · Oct 24
And to our dean, Jochen Bigus, and Peter Mohr, the spokesperson of the economics department!

janmarcus.de
Jan Marcus @janmarcus.de · Oct 24
Thanks also to @shushmargaryan.bsky.social from Potsdam University for an excellent job as discussant!
Shushanik discussing

Reposted by Peter Haan, Paul Goldsmith-Pinkham

janmarcus.de
Jan Marcus @janmarcus.de · Oct 24
🎉 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.
Peter Mohr, Philipp Bach, Jochen Bigus, Shushanik Margaryan Philipp presenting the receiption

janmarcus.de
Jan Marcus @janmarcus.de · Oct 22
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!
fu-berlin-vwl.bsky.social FU Berlin Economics @fu-berlin-vwl.bsky.social · Oct 22
🗓️ 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“

Reposted by Jan Marcus

fu-berlin-vwl.bsky.social
FU Berlin Economics @fu-berlin-vwl.bsky.social · Oct 22
🗓️ 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“

janmarcus.de
Jan Marcus @janmarcus.de · Oct 15
Congratulations, Daniel! Very well deserved!

Reposted by Jan Marcus

fu-berlin-vwl.bsky.social
FU Berlin Economics @fu-berlin-vwl.bsky.social · Oct 15
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“

Reposted by Richard S.J. Tol, Dorothy Bishop, Kamran Abbasi , and 11 more

steamtraen.eu
Nick Brown @steamtraen.eu · Oct 13
Next time an institution tells you how seriously it takes research misconduct, ask them if it's *this* seriously. www.bmj.com/content/297/...
In 1916 the BMJ published an article about the work done by James Shearer, an American physician working in the British Army as a sergeant (because he had no British qualification). He had described a "delineator" which was better than x rays for portraying gunshot wounds. This caused a sensation and a lot of interest — but on investigation the work was found to have been invented. The BMJ published a retraction, but Shearer was tried by court martial and sentenced to death by firing squad.

Reposted by Jan Marcus

lunafazio.bsky.social
Luna Fazio @lunafazio.bsky.social · Oct 1
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. 😄

Reposted by Jan Marcus

annagoeddeke.bsky.social
Anna Goeddeke @annagoeddeke.bsky.social · Sep 22
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
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

janmarcus.de
Jan Marcus @janmarcus.de · Sep 16
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
Economist of the Free University Berlin at the Annual Meeting of the Verein für Socialpolitik