Lukas Birkenmaier
@lukasbirkenmai1.bsky.social
680 followers 650 following 49 posts
Research Associate and PhD Candidate @gesis_org | Interested in text as data, validity, political communication; 🔗https://lukasbirkenmaier.de/
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Reposted by Lukas Birkenmaier
sebstier.bsky.social
🚀 New postdoc position for Platform Data & Computational Social Science
Join us to drive @gesis.org' efforts around the Digital Services Act (DSA) and conduct research with online platform data
💼 TV-L EG 14 | Location: Cologne
📌 Apply now: www.gesis.org/en/institute...
#DSA #CSS #DataScience
Details
GESIS Leibniz Institut für Sozialwissenschaften
www.gesis.org
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msaeltzer.bsky.social
💥💥💥 Deadline tomorrow!
Reposted by Lukas Birkenmaier
marckeuschnigg.bsky.social
We are hiring postdocs in Computational Social Science
📍SweCSS, Norrköping, Sweden
⏰Deadline June 3
🔗https://liu.se/en/work-at-liu/vacancies/26854
Please apply // help us spread the word
Norrköping campus at sunset
Reposted by Lukas Birkenmaier
kunkakom.bsky.social
Using Principal-Agent Theory, our new paper argues delegating governmental tasks to #AI undermines feelings of being in control, leading to a "failure-by-success":

Initial AI efficiency drives wider adoption, ultimately eroding citizens' sense of control, a cornerstone of democratic legitimacy
lukasbirkenmai1.bsky.social
Our results suggest that computational methods can capture meaningful personality cues in text. We also highlight several limitations and next steps—curious to hear your thoughts and feedback on the paper! :)
lukasbirkenmai1.bsky.social
For 2) we confirm previous findings that Donald Trump signals more agency-related cues, whereas Kamala Harris signals more communion-related cues during their presidential debate
lukasbirkenmai1.bsky.social
For 1), we see a clear and consistent negative relationship between the parties CHES ("left-right") score and the politicians’ share of communion. This association is particularly
pronounced for the economic dimension (left panel), but also present in the cultural dimension (right panel).
lukasbirkenmai1.bsky.social
We also demonstrate that our measure is sensitive to partisan differences for (1) aggregated communion scores of politicians across political parties in the German Bundes-
tag, and (2) individual scores for the U.S. Presidential Debate between Donald Trump and Kamala Harris on September 10, 2024
lukasbirkenmai1.bsky.social
We observe that Deepseek-V3 achieved the strongest performance, closely followed by GPT-4o. At the same time, traditional methods (SVM, XLM-RoBERTa) showed weaker results across validation steps (e.g., comparison with human labels (left plot) & functional tests with designed examples (right plot)).
lukasbirkenmai1.bsky.social
💻 We then apply a systematic research design that includes
1) extensive operationalisation of two traits (agency and communion) using a validated framework
2) Human labelling and validation, and
3) multiple methods (SVM, XLM-RoBERTa, GPT-4o, Llama-3-8B, Deepseak-V3) and measurement strategies!
lukasbirkenmai1.bsky.social
We started conceptualizing how "politicians' personality" can be measured by focusing on observable personality cues as the main empirical indicators in language. These cues reflect an amalgamation of politicians' true intrinsic traits shaped by (unobservable) strategic considerations.
lukasbirkenmai1.bsky.social
Very sad that I can't join #comptext25 this year -.- but for those interested in political psychology, we just published the preprint of my last dissertation paper where we conducted a validation study for measuring politicians' public personality traits using text as data: doi.org/10.31219/osf... 👇
OSF
doi.org
Reposted by Lukas Birkenmaier
gesis.org
#jobs #stellenangebote #GESISjobs #jobfairy
Our Department Survey Design & Methodology (SDM), Team Scale Development and Documentation, located in #Mannheim, is looking for a #ResearchAssociate (Doctoral student) (Salary group 13 TV-L, 75 % working time, limited to 4 years):
www.hidden-professio...
Reposted by Lukas Birkenmaier
chrauh.bsky.social
🚨 #Data alert 📣 We just released #ParlLawSpeech – full texts of more than 40k bills, 28k laws, and 3 mio. parliamentary speeches from 7 countries (AT, CZ, DE, DK, ES, HR, HU) and the EU! If you study democracy with #TextAsData / #NLP methods, this is for you! A short 🧵 (1/3) #PoliSkyData #polisky
lukasbirkenmai1.bsky.social
Dataset alert ⏰
We just uploaded the preprint for a novel dataset of German politicians' public broadcast interviews (around 100 interviews, 30 politicians, 28k sentences) sourced from YouTube & manually validated + speaker identification and timestamps, ready for re-use 👍 arxiv.org/pdf/2501.04484?
arxiv.org
Reposted by Lukas Birkenmaier
sebstier.bsky.social
🚨 Reminder: The application deadline for two open positions @gesis.org department Computational Social Science is approaching quickly!

📅 Application deadline: January 20
Reposted by Lukas Birkenmaier
compcommlab.bsky.social
🚨 #COMPTEXT2025 Workshops – Sneak Peek! 🚨
🧰 Data donations and digital trace data
📖 Narratives in large datasets
🖼️ Visual data analysis 
🛠️ Creative text analysis toolkits
🧐 Bayesian text analysis
…and more!
Don’t miss your chance—submit your abstracts (250 words) by January 15 👉 shorturl.at/AmocX
7th Annual COMPTEXT Conference 2025 – The Comptext Project
shorturl.at
Reposted by Lukas Birkenmaier
lukasbirkenmai1.bsky.social
Heute erstes Live-Interview mit dem Deutschlandfunk ✅ über die Herausforderungen der Fristen für Briefwahl bei der Bundestagswahl 2025✉️ Ich freue mich über Feedback! :)
www.deutschlandfunkkultur.de/bundestagswa...
Bundestagswahl am 23. Februar: Stolpersteine bei der Briefwahl
www.deutschlandfunkkultur.de
lukasbirkenmai1.bsky.social
Heute erstes Live-Interview mit dem Deutschlandfunk ✅ über die Herausforderungen der Fristen für Briefwahl bei der Bundestagswahl 2025✉️ Ich freue mich über Feedback! :)
www.deutschlandfunkkultur.de/bundestagswa...
Bundestagswahl am 23. Februar: Stolpersteine bei der Briefwahl
www.deutschlandfunkkultur.de
Reposted by Lukas Birkenmaier
dienerjulius.bsky.social
My first paper has been published at PVS. In it, I investigate the strategic incentives behind parliamentary interruptions using data from the German Bundestag. In this thread you can find a short summary of the paper, which is available under open access here: rdcu.be/d4mHq
Explaining Interruption Behavior in Parliament: The Role of Topic Expertise, Career Status, and Government-Opposition Dynamics
rdcu.be