Jasper Tjaden
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jaspertjaden.bsky.social
Jasper Tjaden
@jaspertjaden.bsky.social
1.7K followers 300 following 51 posts
Professor of Social Research and Public Policy at Uni Potsdam, migration, integration, elections, social media, causal inference, Computational Social Science.
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Reposted by Jasper Tjaden
johannesbreuer.com
Postdoc position in CSS/Sociology at @unidue.bsky.social:
www.uni-due.de/karriere/ste...
EG 13 TV-L for three years
Please apply before Feb 5th 2026
Research cluster Anja Weiß, Institute for Sociology, University of Duisburg-Essen #computationalsocialscience
Stellenausschreibung
www.uni-due.de
January 9, 2026 at 4:35 PM
Reposted by Jasper Tjaden
lauraptz.bsky.social
📣New OPEN ACCESS article:

What are the pathways taken by rejected asylum seekers to resolve their irregular(ized) status?
And how do these trajectories unfold over time?

📈Answers based on longitudinal administrative data can be found here:
doi.org/10.1002/psp....

#irregularmigration
Return or Regularization? A Temporal Analysis of Rejected Asylum Seekers in Germany
This study examines the temporal dynamics and policy influences on pathways out of irregular(ized) status among rejected asylum seekers in Germany through the lens of temporal liminality, a concept h...
doi.org
December 17, 2025 at 2:49 PM
Reposted by Jasper Tjaden
uebermedien.de
Eine Potsdamer Studie zu wirtschaftlichen Folgen des Klimawandels sorgte weltweit für Aufsehen, nun wurde sie zurückgezogen. Einen überzeugenden Weg, damit umzugehen, finden die meisten Medien nicht, schreibt @martinruecker.bsky.social. Jetzt ohne Paywall: uebermedien.de/111884/studi...
Klimastudie: Zurückgezogen, aber in Medien nicht totzukriegen
Eine Potsdamer Klimastudie sorgte weltweit für Aufsehen, nun wurde sie zurückgezogen. Aber nicht alle Medien korrigieren ihre Artikel dazu.
uebermedien.de
December 17, 2025 at 9:55 AM
Reposted by Jasper Tjaden
sgonzalezbailon.bsky.social
New publication (4+ years in the making): “The Diffusion and Reach of (Mis)Information on Facebook”. shorturl.at/VE2fU
We analyze the propagation of 1B+ posts across content moderation regimes, with @davidlazer.bsky.social @jatucker.bsky.social @taliastroud.bsky.social @annenbergpenn.bsky.social
December 11, 2024 at 5:23 PM
Reposted by Jasper Tjaden
florianfoos.bsky.social
We have a new tenure-track job in @lsegovernment.bsky.social at AP level (empirical political science, open subfield): jobs.lse.ac.uk/Vacancies/W/... Please apply and share with colleagues who might be interested!
Assistant Professor in Political Science
Assistant Professor in Political Science, , <p style="text-align: center;"><em><span>LSE is committed to building a diverse, equitable and truly inclusive university</span></em></p> <p style="text-ali...
jobs.lse.ac.uk
November 24, 2025 at 7:43 PM
Reposted by Jasper Tjaden
akbaritabar.bsky.social
The call for applications for the Summer Incubator 2026 at the @mpidr.bsky.social is open!

Deadline: Jan 14, 2026.

Topics/Teams:
1) Spatial Mobility and Scientific Production
2) Digitalization, AI and Inequalities

Check out the brand new website for information:
www.incubator.demogr.mpg.de
November 27, 2025 at 10:40 AM
Reposted by Jasper Tjaden
joelmachado.eu
‪
With @jeromevalette.bsky.social & Jesús Fernández-Huertas Moraga, we are happy to announce the CfPapers for the

4th edition of the Junior Workshop on the Economics of Migration

on May 26-27, 2026 @uc3meconomics.bsky.social, Spain.

Submit until February 1, 2026 on economig2026.sciencesconf.org
November 24, 2025 at 9:27 AM
Reposted by Jasper Tjaden
niklas-harder.bsky.social
I’m very happy to see our paper published in Political Geography. We show that your country of residence influences your waiting time for an appointment at a German diplomatic mission. These differences are substantial and far from random.
deutschmann.bsky.social Emanuel Deutschmann @deutschmann.bsky.social · Nov 19
New #openaccess study

We made >16,000 visa appointment requests at German embassies and consulates worldwide

Key finding: The poorer the country, the longer the wait time and the lower the chance to get an appointment.

"A time panelty for the Global South?"
shorturl.at/ZiAFb
Visas are a key tool for states to regulate incoming mobility from abroad, which can have ramifications for the establishment and perpetuation of global inequalities. In this article, we systematically analyze visa appointment wait times in German embassies and consulates worldwide. Using computational methods, we collect—and publish—fine-grained longitudinal data on the closest available appointment dates for various visa types, covering a total of 16,182 visa appointment requests. Our analysis reveals strong and systematic variance: the poorer the country a diplomatic mission is based in, the longer the wait time and the lower the chances of finding an available appointment (which ranges from almost 0 to 100 percent). We also argue that Germany’s system is quite opaque compared to other established immigration countries such as the U.S. These core findings raise important questions in light of current debates about global justice, legal pathways to migration, and efforts to attract foreign talent. Graph that shows that 44.1 percent of requests did not lead to an appointment that could be selected. For the 55.9 percent where an appointment was available the distribution of wait times follows a steep curve with short wait times in many cases and a long tail of few cases with very long wait times of up to 98 days. The average wait times and chances to find an appointment varied a lot between Germany's diplomatic missions. The latter range from almost 0 to 100 percent. This variance is not random. Rather, economic wellbeing (GDP per capita) is a key predictor of wait times and chances of finding an appointment. The poorer the country a German embassy/consulate is based in, the longer the wait time and the lower the chances of finding an appointment.
November 19, 2025 at 4:03 PM
Reposted by Jasper Tjaden
dezim-institut.de
Langes Warten oder kein Termin – Globaler Süden wird im dt. #Visasystem deutlich benachteiligt. Das zeigt die Analyse von @deutschmann.bsky.social, @eui-eu.bsky.social, @niklas-harder.bsky.social & @alexandra-orlova.bsky.social @politicalgeography.bsky.social

www.sciencedirect.com/science/arti...
Zitat von Dr. Niklas Harder: Wartezeiten auf Termine an deutschen Auslandsvertretungen sind die erste Hürde auf dem Weg nach Deutschland. Unsere Untersuchung zeigt, dass das Herkunftsland entscheidet, wie hoch diese Hürde ist. Gute Migrationspolitik braucht Transparenz und gleiche Chancen für alle motivierten Einwanderer*innen, egal aus welchem Land. Hier bietet sich eine öffentlich zugängliche Plattform mit den aktuellen Wartezeiten an, etwa als Teil des Auslandsportals des Auswärtigen Amtes. Transparenz ist auch die Grundlage dafür, die Frage zu diskutieren, wie die unterschiedlichen Wartezeiten entstehen.
November 19, 2025 at 4:25 PM
Reposted by Jasper Tjaden
joshuafmask.bsky.social
blog.google/outreach-ini...
We’re introducing Google Scholar Labs to answer your research questions
Today, we are introducing Google Scholar Labs, a new feature that explores how generative AI can transform the process of answering detailed scholarly research questions…
blog.google
November 19, 2025 at 4:54 PM
Reposted by Jasper Tjaden
stpoetzschke.bsky.social
Don't miss out on Anna Hebel's webinar presentation:

The Role of Ad Design: Image Characteristics and Design Formats in Social Media Recruitment

is about to start on MS Teams:
events.teams.microsoft.com/event/145a60...

#SurveyMethodology
Learn more about Anna's research: doi.org/10.31219/osf...
November 4, 2025 at 3:04 PM
Reposted by Jasper Tjaden
distasioval.bsky.social
Postdoc opening. Background in IR/PolSci, quantitative skills. Great supervisors.
October 27, 2025 at 7:03 PM
Reposted by Jasper Tjaden
chrauh.bsky.social
@ckreudersonnen.bsky.social and I are happy to announce two open research positions in our joint DFG-funded project VARICRIS (👉 bit.ly/varicris).
We are recruiting a #PostDoc and a #PhD candidate 🧵:

#PoliSky #PoliSkyJobs #polsci 🌐
Welcome! – VARICRIS
VARICRIS research project
bit.ly
October 22, 2025 at 2:40 PM
Reposted by Jasper Tjaden
claesdevreese.bsky.social
Work!! 🚨

We are looking for a #postdoc in our AI, media and Democracy Lab @aimediademlab.bsky.social

Dynamic position, great team, nice colleagues 💥

Profile: communication/ poli sci/ computational social sci

🗓️ DL November 1

Spread the word 📣

werkenbij.uva.nl/en/vacancies...
Vacancy — Postdoctoral researcher Communication Science at AI, Media & Democracy Lab
Do you want to be part of the AI, Media & Democracy Lab? We are looking for a postdoctoral researcher with a profile in communication science.
werkenbij.uva.nl
October 19, 2025 at 6:33 AM
jaspertjaden.bsky.social
Toller Artikel @zeitonline.bsky.social und sehr kompatibel mit unseren Analysen zu #TikTok #AFD und den #BTW25.
October 15, 2025 at 9:49 AM
Reposted by Jasper Tjaden
akoustov.bsky.social
Migration needs more common ground!?

Glad to join Konrad's excellent "Migration Debates" on the importance of compromise with Marc Helbling and Oliviero Angeli.

The interviews are available in English (and German) here:
www.kas.de/en/web/analy...
October 13, 2025 at 5:32 PM
jaspertjaden.bsky.social
Looking for studies that show memership composition in terms of "political idealogy/ party preferences" of large social media platforms. Any hints?
@mikecowburn.bsky.social @pettertornberg.com @ulrikeklinger.bsky.social @hendrikmeyer.bsky.social @weizenbauminstitut.bsky.social @ingmarweber.de
October 13, 2025 at 12:00 PM
Reposted by Jasper Tjaden
jeyalizade.bsky.social
Glad to see this out at @ajpseditor.bsky.social! I show that the immigration-crime issue, when salient, can shift leftist cosmopolitans to the Right. This is due to leftist voters being more conservative on crime than leftist parties.

onlinelibrary.wiley.com/doi/10.1111/...
American Journal of Political Science | MPSA Journal | Wiley Online Library
Concern that immigration worsens crime problems is prevalent across Western publics. How does it shape electoral politics? Prior research asserted a growing left–right divide in immigration attitudes...
onlinelibrary.wiley.com
September 30, 2025 at 4:44 PM
Reposted by Jasper Tjaden
snmorgenstern.bsky.social
www.sciencedirect.com/science/arti...
Credibility and/or anxiety - The moderators of political information on migration
In the policy of migration information campaigns Western governments aim to influence perceptions on irregular migration in potential sending countrie…
www.sciencedirect.com
September 30, 2025 at 9:42 AM
jaspertjaden.bsky.social
Great time back at my alma mater @freieuniversitaet.bsky.social presenting our (@unipotsdam.bsky.social) research on exposure to political content on #tiktok at AK-Wahlen.

In a nutshell, we find....
September 24, 2025 at 12:04 PM
Reposted by Jasper Tjaden
pettertornberg.com
Here’s the partisan lean of platform audiences, 2020 → 2024.

📊 Instagram, TikTok, Reddit stay solidly Dem.
📊 Facebook & YouTube: modestly rightward.
📊 Twitter/X: sharpest move right.
📊 “Other” (Threads, Bluesky, etc.): flipped hard from red to blue.

The sorting is unmistakable.
September 16, 2025 at 11:20 AM
Reposted by Jasper Tjaden
ryanestrada.com
Just a reminder to check for your name in this list of books that OpenAI trained from. If your name is there, they probably owe you several thousand dollars.

OpenAI cried that if everyone eligible author files, the company will go bankrupt, so I'm alerting every author I have ever spoken to.
Search LibGen, the Pirated-Books Database That Meta Used to Train AI
Millions of books and scientific papers are captured in the collection’s current iteration.
www.theatlantic.com
September 6, 2025 at 6:31 AM
jaspertjaden.bsky.social
Excited to present our paper on exposure to right-wing political content on #TikTok at @wzb.bsky.social conference "The future of democracy on 8-10 October.
August 15, 2025 at 1:43 PM
Reposted by Jasper Tjaden
gesis.org
#jobs #stellenangebote #GESISjobs #jobfairy
Job Opening! We're seeking a Postdoc in Computational Social Science to join our team at GESIS! Apply now:

www.gesis.org/en/ins...
July 17, 2025 at 2:45 PM
Reposted by Jasper Tjaden
kwelle.bsky.social
*JOB* join the amazing Computational Social Science group at GESIS. Postdoc position with tenure option in Köln / Cologne.
gesis.org GESIS - Leibniz-Institut für Sozialwissenschaften @gesis.org · Jul 17
#jobs #stellenangebote #GESISjobs #jobfairy
Job Opening! We're seeking a Postdoc in Computational Social Science to join our team at GESIS! Apply now:

www.gesis.org/en/ins...
July 17, 2025 at 8:34 PM