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Posts by Jan Lorenz

What are your arguments for "probably can't be salvaged"? Sounds like an example of a meaningful non-right-wing word getting hijacked by extreme-right strategic communication. It should not be countered by avoidance, but by clarification when needed, when extremists' concepts sneak into discourse.

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@shirleywu.studio @nadiehbremer.com @sonjakuijpers.bsky.social @tulpinteractive.com @laesser.bsky.social @visualisingdata.com

2 weeks ago 4 2 0 0

New paper published today in @pnas.org with @filippozimmaro.bsky.social Mirta Galesic and @jacrickets.bsky.social LINK: www.pnas.org/doi/10.1073/...

We use evolutionary game theory to study when populations will fracture into groups that differ in their beliefs, behaviors and preferences.

2 weeks ago 14 7 2 2

Can we have an ORCID CV or sth, pretty please? I've various versions of my CV for various funders and it just doesn't seem like a good use of anyone's time.

3 weeks ago 9 1 0 0
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The ties that bind, or don’t. A network view of social cohesion | Kozminski University Dr Michał Bojanowski shows how social cohesion surveys overlook the actual structure of social relationships: who talks to whom, and who is left out.

A new research post on Kozminski Review!
@mbojan.bsky.social shows how his take on network analysis, combining personal network surveys and statistical network modeling uncovers social groups that are out of the picture in discussion networks.

No hear, no see?
www.kozminski.edu.pl/en/review/ti...

1 month ago 3 2 0 1
CfP_ComputationalSocialInequality.pdf

Doing computational social science research on inequality on your own? This special issue is for you!

We’re inviting submissions for a Historical Social Research issue on “Computational Social Inequality Research in Practice.”

📅 Deadline: 15 May 2026

#CallForPapers #CompSocSci #Inequality

1 month ago 6 9 0 1
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V-Dem v.16 is now released, w. updated scores for 2025.

Most countries remain stable from 2024, but some clear improvements (on diff’t democracy indices), incl. S. Korea, Sri Lanka & Mauritius.

Largest declines came, by far, in the US.

This figure shows 10-yr changes on the Liberal Dem. index.

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How does social influence shape collective outcomes? When does it lead to lock-in on inferior options?

In our 🚨 new preprint 📝 osf.io/preprints/so... we make three contributions

w/ @alexgelas.bsky.social Alex Jochim @leostnbrk.bsky.social Peter Steiglechner & @pantelispa.bsky.social

🧵1/4

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Embarrassing to see "likes" for this post!

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Want to learn about computational social science *for free* and identify new research partners across academic fields? Apply to one of the 2026 Summer Institutes in Computational Social Science (described in yellow in the attached map) here: sicss.io/locations

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Clear and brief communication on a critical topic. If you care about ways of making social media better give this one a scan!

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🧵on my new paper "Synthetic personas distort the structure of human belief systems" w Roberto Cerina I'm v excited about...

🚨 Do synthetic samples look like human samples?

We compare 28 LLMs to the 2024 General Social Survey (GSS) to find out + develop host of diagnostics...

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Several pictures of Alysa Liu plus a spider where the black-blonde leg colors match her hair, Joy from the movie Inside Out with similar posture, an image of a real porcupine with similar hairstyle and Ash the cool Rock Guitar playing porcupine from the movie Sing.

Several pictures of Alysa Liu plus a spider where the black-blonde leg colors match her hair, Joy from the movie Inside Out with similar posture, an image of a real porcupine with similar hairstyle and Ash the cool Rock Guitar playing porcupine from the movie Sing.

All my Alysa Liu associations.

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Ministers are already on y somehow. And you have time-in-office on x already somehow. The duplication of days in office on y created more confusion than promoting the message for my taste, although I'd love, if time could flow in two directions.

1 month ago 0 0 0 0
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Width is fine with time (x=t convention). I expected height to be parliamentary seats (before trying to make sense of it and reading the caption). But if seats are too unreliable, why not just numbers of ministers on y? I think it is less confusing. And of course you could have real-time on x.

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"And with this, I claim that party importance increases quadratically with ministers' time in office!" (Small DataViz critique of your great work 🙂)

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Wie die Kumuliermöglichkeit Panaschieren verhindert und Personenwahlkampf polarisiert on JSTOR Jan Lorenz, Wie die Kumuliermöglichkeit Panaschieren verhindert und Personenwahlkampf polarisiert, Zeitschrift für Parlamentsfragen, Vol. 49, No. 3 (2018), pp. 564-585

Außerdem gäbe bei 3mal Kumuliermöglichkeit und nur 5 Stimmen die hier beschriebenen (und aus meiner Sicht ungünstigen) Änderungen für die Vorteile verschiedener Kandidaten-Strategien. www.jstor.org/stable/26779...

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Ich frage mich, warum es keine Wahlzettelvereinfachung gibt: Eine Liste, wo man die Kandidatennummern eintragen kann (plus Reststimmen-Listennummer) wäre weniger fehleranfällig für Wähler und viel besser fürs Auszählen. Der Mega-Zettel wird dann ein Heft. (Wäre auch optional möglich.)
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Aber manche halt schon und wer nur 5-7 oder gar keine kennt hat ja mit dem Listenkreuz die Abkürzungsmöglichkeit. Deswegen sehe ich nicht wirklich eine Vereinfachung in der Beschränkung auf 5-7.
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In Bremen ist es ein Heft und man hat 5 Stimmen. Das ganze Heft ordentlich auf genau 5 abzusuchen ist echt anstrengend beim auszählen. Wenn Wähler jetzt alle 80 Stimmen einzeln verteilen wirds natürlich noch komplizierter mit dem Auszählen. Es dürfen ja keine 81 sein!

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Macht den Stimmzettel aber auch nicht kürzer. Mit dem Listenkreuz für Reststimmen finde ich es noch einfacher als genau die 7 Stimmen abzuzählen.

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Legacy Google Slides, and when I make a large visual conceptual graph (unfolding step by step). For these graphs, I need direct visual feedback. When I need ggplots and R-code in the same slidedeck, I have a problem. A Google Slides to revealjs converter on the object level would solve it...

2 months ago 1 0 0 0
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An AI Agent Published a Hit Piece on Me Summary: An AI agent of unknown ownership autonomously wrote and published a personalized hit piece about me after I rejected its code, attempting to damage my reputation and shame me into acceptin…

AI agent goes nuts on open source maintainer after having its pull request denied. This is a pretty insane story. Open source development as we've been used to for the last few decades is likely over. 1/
theshamblog.com/an-ai-agent-...

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Always a pleasure chatting with students who ask sharp questions 😊 Thanks to The Governance Post for having me - and yes, I stand by the autopilot line.

2 months ago 6 2 0 0
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Book just published (Free to download). This collects together work done by the groups at the Research Incubator held in Groningen in the summer of 2023 which I participated in. link.springer.com/book/10.1007... #abm #polarization #socialscience #cohesion

2 months ago 1 1 1 0
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🚨 New working paper – Wealth Taxation, Capital Gains Taxation and the Inequality–Mobility Trade-Off

Together with @janlo.de and @jansg.bsky.social, we compare wealth taxes and capital gains taxes in a random growth model with idiosyncratic investment risk.

2 months ago 7 2 2 0
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Linguistic Polarization in Minority Representation: Analyzing Parliamentary Speeches in Germany and the UK (1980–2021) Political polarization shapes how minority issues are discussed in public and parliamentary discourse, with implications for representation and policy. We examine the representation of migration and s...

How do parties debate minorities? New study based on all parliament speeches in Germany and the UK 1980-2021, with @younghyunlee52.bsky.social , F. #Piñeyrúa, & @max-web.bsky.social, published in the edited volume Computational Social Science of Social Cohesion and Polarization:

2 months ago 14 6 1 0
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Bluesky Map Interactive map of 3.4 million Bluesky users, visualised by their follower pattern.

I made a map of 3.4 million Bluesky users - see if you can find yourself!

bluesky-map.theo.io

I've seen some similar projects, but IMO this seems to better capture some of the fine-grained detail

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Computational Social Science of Social Cohesion and Polarization This open access book explores the decay of social cohesion in democratic societies through the lens of Computational Social Science (CSS)

Today Springer published an Open Access book edited by @janlo.de , Marijn Keijzer and myself covering a diverse range of Computational Social Science approaches to questions about social cohesion and polarization. Come and get it at link.springer.com/book/10.1007...
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