iiinova — where your digital self keeps evolving

Robert Vief @robertvief.bsky.social · 30/09/2026

Morgen ab 14:15 in Raum P6 (Philosphicum) u.a. mit mir zu dazu, wie die sozioökonomische Durchmischung von Schulklassen berufliche Aspirationen beeinflusst #DGS2026 Und vielen anderen spannenden Vorträgen. Falls es eure Fitness nach der DGS-Party zulässt, kommt vorbei ;)

031

Robert Vief @robertvief.bsky.social · 21/07/2026

There are worse places for a conference reception than Vienna City Hall... #RC21 #RC21Vienna2026

020

Robert Vief @robertvief.bsky.social · 20/07/2026

Btw after an inspiring first day at the #RC21, there are even more interesting talks tomorrow. I am around with two paper presentations, come by at 9am (SR02) and 11am (HS03), if you wanna learn more about school choice in Germany and segregation in healthcare accessibility. See you #RC21Vienna2026

050

Robert Vief @robertvief.bsky.social · 20/07/2026

Very international crowd at the #RC21 conference this year. With more than 1200 people attending. And what a venue! Thanks to the amazing organizers! #RC21Vienna2026

020

Robert Vief @robertvief.bsky.social · 20/07/2026

A great start to the #RC21, with lots of stimulating discussions on neighborhood cohesion in Session #54. Also, just spotted this: how cool are these eco-friendly name badges? 😍 #RC21Vienna2026

Discussing crowd at RC21 conference in Vienna

Example of an eco friendly name tag at RC21 conference in Vienna.

040

Robert Vief @robertvief.bsky.social · 18/06/2026

In der Hoffnung, dass es nicht zu spät kommt, habe ich auch noch einmal dorthin geschrieben (gremienbuero@deutschlandradio.de). Vielleicht möchten sich hier ja auch noch andere anschließen, die die Reform des DLF kritisch sehen.

Protestnote gegen die Reformierung des DLF an gremienbuero@deutschlandradio.de

053

Robert Vief @robertvief.bsky.social · 16/06/2026

Second Keynote at #ecsr2026 in Dublin from @distasioval.bsky.social. She gives some background information about experiments: use of them in published papers in ESR strongly increased over time. Almost no experimental study in 2013/earlier, now almost 70 papers with some kind of experimental design

Keynote at the ECSR conference 2026 in Dublin. Graph about the share of experiments in the ESR journal.

020

Robert Vief @robertvief.bsky.social · 24/11/2025

6/ 2010 lag die SES-Segregation an Schulen (gemessen über SGB-II-Anteil) bei ~0.47, 2020 bereits bei ~0.55. Schulen driften also sozial weiter auseinander, obwohl ihre Einzugsgebiete durchmischter werden. Die Kopplung beider Ebenen bricht damit systematisch auf.

Die Kopplung von Schulsegregation und Segregation auf Ebene der Einzugsgebiete für Berlin 2010 bis 2020, aus: https://doi.org/10.36900/suburban.v13i2/3.1030

132

Robert Vief @robertvief.bsky.social · 24/11/2025

4/ Beispiel: Der Segregationsindex für Bewohner:innen mit Migrationsgeschichte sinkt 2010–2020 stark, für arab. Herkunft sogar auf das Niveau von Deutschen (o. Migr). Auch Kinderarmut wird räumlich weniger konzentriert. Die Idee der „auseinanderdriftenden Stadt“ greift für Wohnsegregation nicht (!).

Tabelle zur Wohnortsegregation auf Ebene der Grundschuleinzugsgebiete in Berlin 2010 bis 2020, aus https://doi.org/10.36900/suburban.v13i2/3.1030

141

Robert Vief @robertvief.bsky.social · 24/11/2025

📢 Publication Alert! Wir analysieren für alle Berliner Grundschulen von 2010 bis 2020, wie sich Wohn- und Schulsegregation entwickeln – und warum sich beide Systeme immer stärker entkoppeln, obwohl die Stadt durchmischter wird. 1/ (mit @taljab.bsky.social) Open Access: doi.org/10.36900/sub...

https://doi.org/10.36900/suburban.v13i2/3.1030

24316

Robert Vief @robertvief.bsky.social · 01/10/2025

Danke! Ich denke, dass der Hauptmechanismus darin liegt, dass es eine Abkehr davon gibt, genau an diesen Mechanismus (Sickereffekt) zu glauben, zumindest in räumlichen Kontexten, wo Neuvermietungsmieten deutlich über den Bestandsmieten liegen (vgl. unsere Appendix-Analysen A.23 im Paper)

110

Robert Vief @robertvief.bsky.social · 20/09/2025

We are taking advantage of a natural experiment: Berlin’s 2019 rent cap law — one of the boldest rent control experiments worldwide. Rents were frozen (and in many many cases lowered) until Germany’s constitutional court struck it down in 2021. And (see map below), reductions affected many 6/11

120

Robert Vief @robertvief.bsky.social · 20/09/2025

🚨 New paper: “Does Rent Control Turn Tenants Into NIMBYs?” in the Journal of Politics (JOP) (joint work with @anselmhager.bsky.social and @hannohilbig.bsky.social) 👉 Have a look over here: www.journals.uchicago.edu/doi/10.1086/... Most important findings in this thread: 1/11

13811

Robert Vief @robertvief.bsky.social · 04/09/2025

Nothing better than presenting research (on residential (de-)segregation trends and its non-alignment with better healthcare accessibility) that came out of joint ideas with former students and their excellent work on the topic and complex data, kudos to Marlene Steenken and Nele Bittner #ECSR2025

091

Robert Vief @robertvief.bsky.social · 03/09/2025

Well well, @ruettenauer.bsky.social also entering the meme game in his #ECSR2025 presentation about two-way fixed-effects estimators Gonna keep you posted if others pop up the next days haha

2201

Robert Vief @robertvief.bsky.social · 03/09/2025

Btw, in my opinion, the best meme game award within a conference presentation at #ECSR2025 goes to Chenru Hou (University of Potsdam) and her presentation about classroom diversity and friendship ties - for constantly underline all parts of her presentation with cat memes Nice job haha 😸

0120

Robert Vief @robertvief.bsky.social · 03/09/2025

@hermwerf.bsky.social presenting about a sorting and learning model of educational inequality. Although starting at 9am, packed room What did we learn? Negative effects of the gymnasium for low-SES students (for many outcomes) #ECSR2025

0194

Robert Vief @robertvief.bsky.social · 03/09/2025

Packed first session at the #ECSR2025 about policies and educational inequality Andrea Pietrolucci presenting on neoliberal and democratic school-level policies and their consequences for achievement Controlled for student composition: neoliberal policies do not have any benefit (surprise...)

020

Robert Vief @robertvief.bsky.social · 03/09/2025

And: 2) on Friday morning (9 am), where we present research about differentials in occupational aspirations among 15 year olds by SES type in 68 countries (PISA data, see below) See you there and happy conference! #ECSR2025

051

Robert Vief @robertvief.bsky.social · 03/09/2025

On my way to Cologne for ECSR Conference. Excited to see so much interesting research! Also: You can catch me at two occasions: 1) Come to the poster session (Thursday, 5:30 pm), where we show research about residential segregation and related inequalities in healthcare accessibility #ECSR2025

030

Robert Vief @robertvief.bsky.social · 22/06/2025

Lol so viel Subversion in der FAZ dann doch etwas überraschend 😂 www.faz.net/aktuell/feui...

FAZ Kolumne: Jugendliche, die Fahrräder knacken

040

Robert Vief @robertvief.bsky.social · 10/06/2025

I was deeply saddened to learn of Richard Alba’s passing today by John's post on Facebook. I had the privilege of being his student during an academic exchange year at CUNY in 2017. His seminar and our conversations left a lasting mark on me both intellectually and personally. 1/4

John Mollenkopf announcing the death of Richard Alba on Facebook

1151

Robert Vief @robertvief.bsky.social · 30/05/2025

Was man in schlechten BA-Arbeiten erwartet, ist jetzt genau so in nem offiziellen "wissenschaftlichen" Bericht der US-Gesundheitsbehörde passiert. Es tauchen einfach Fake-Quellen auf, die ins Weltbild passen, sieben wurden einfach frei erfunden. www.spiegel.de/wissenschaft...

Ausschnitt aus: https://www.spiegel.de/wissenschaft/usa-maha-report-von-robert-f-kennedy-jr-enthaelt-fehlerhafte-quellen-a-29c1389b-877e-4bc8-9dbe-7d3121a4c7d3

120

Robert Vief @robertvief.bsky.social · 05/03/2025

Lieber SPIEGEL. Es gäbe durchaus politische Möglichkeiten, am anderen Ende der Verteilung die Profite der Vermieter:innen zu begrenzen, statt jetzt als Lösung das 2€ Essen für alle Betroffene von überhöhten Mieten zu propagieren, aber nun gut...

Spiegel Artikel https://www.spiegel.de/start/guenstiges-rezept-asiatische-reisbowl-mit-spiegelei-fuer-nur-2-euro-a-de94c5ff-e1ef-4e28-a758-910ae03757d8

050

Robert Vief @robertvief.bsky.social · 30/01/2025

Römer in Frankfurt ist voll, man kommt nicht mehr auf den Platz. Viele Menschen sind wütend!

050

Robert Vief @robertvief.bsky.social · 24/01/2025

1/ New Publication 📜 We all felt it during COVID-19 lockdowns: size of your living space mattered somehow. But how exactly? 🤔 Our new study unpacks why small living spaces shaped the pandemic experience, and which groups were most negatively affected www.tandfonline.com/doi/full/10....

292

Robert Vief @robertvief.bsky.social · 16/01/2025

Funny tool to figure out when your followers are most active online: besttimetopost.blue Apparently for me, it’s not right now — everyone’s off having lunch (so early?)

Some user statistics from https://besttimetopost.blue/

000

Robert Vief @robertvief.bsky.social · 05/12/2024

Some professional news: Starting January 1, 2025, I’ll begin a Postdoc position at Goethe University Frankfurt. While I’ll miss the HU, I’m incredibly excited about the new intellectual environment, amazing colleagues, and the city itself!

Robert Vief. PEG Building. Goethe Universität Frankfurt am Main.

2250

Robert Vief @robertvief.bsky.social · 10/11/2024

Zum Anlass des Mauerfalls habe ich der Berliner Morgenpost ein kleines Interview gegeben - an welchen Stellen die Ost/West-Differenzierungen heutzutage in Berlin noch klar zu erkennen sind, und wo auch nicht... Heute im Print auf Seite 12 www.morgenpost.de/berlin/artic...

Morgenpost Vief Interview: Wo die Mauer immer noch spürbar ist.

100

Robert Vief @robertvief.bsky.social · 04/11/2024

Honored to have contributed to articles/data journalism on Berlin schools @tagesspiegel.de (w. Hendrik Lehmann, K. Demirci + others). Today, we received the first-place award for local journalism from KAS, presented by Norbert Lammert – the 'Oscar' of journalism awards (their wording)

110

Robert Vief @robertvief.bsky.social · 17/05/2024

Yesterday, I finally submitted my doctoral thesis "Integrated neighborhoods, polarized schools. The patterns of residential and school segregation in Berlin, Germany". So happy about it. And somehow crazy that I really wrote an entire book... Whoever wants to read it, just DM me

Integrated neighborhoods, polarized schools. The patterns of residential and school segregation in Berlin, Germany

1132

Robert Vief @robertvief.bsky.social · 29/04/2024

Today is the kickoff of this semester's Think and Drink Kolloquium from the Georg-Simmel-Centre, Humboldt-Universität We start with Sarah Klosterkamp from Goethe UniversitätFrankfurt (see description below) 6pm, room 002, Universitätsstr. 3b, 10117 Berlin Come by!!

Sarah Klosterkamp Think and Drink Kolloquium 29.04.2024

000

Robert Vief @robertvief.bsky.social · 01/04/2024

1/10🧵Thrilled to share our new study in @JUAurban on "Talking while walking but not with the locals: Social support and domesticity in public space before and during COVID-19 in Berlin, Germany." (w. Talja Blokland and Daniela Krüger) www.tandfonline.com/doi/full/10.... What is it about?

260

Robert Vief @robertvief.bsky.social · 07/01/2024

Berlins Nachbarschaften werden durchmischter, die (Grund-)Schulen leider polarisierter. Warum das eine schlechte Entwicklung ist und welche Rolle dabei Privatschulen spielen: mein Gastbeitrag für den Tagesspiegel interaktiv.tagesspiegel.de/lab/die-stad...

https://interaktiv.tagesspiegel.de/lab/die-stadt-wird-durchmischter-die-schulen-polarisierter/

273

Robert Vief @robertvief.bsky.social · 28/12/2023

Short Reminder: There are still a couple of days left to submit an abstract for this great panel about school segregation across the North and South at the RC21 conference. Deadline: Dec 31st. So please share or forward to those interested in the topic. rc21conference2024.coes.cl/panel-74/

120

Robert Vief @robertvief.bsky.social · 30/11/2023

#30DayMapChallenge | Day 30: My Favourite This one is for the football fans It's one dimension where you can still perfectly see the symbolic East/West divide of Berlin. I present: Where more Hertha BSC (@HerthaBSC) and Union Berlin (@fcunion) members live! #rspatial #rstats

5113

Robert Vief @robertvief.bsky.social · 29/11/2023

#30DayMapChallenge | Day 29 | Population Population Density in Berlin, Germany (2022, block level) High density in the city center (especially Friedrichshain-Kreuzberg), but also in the large housing estates on the outskirts (have a look at Marzahn) #rspatial #rstats

150

Robert Vief @robertvief.bsky.social · 28/11/2023

#30DayMapChallenge | Day 28 | Is this a chart or a map? Just a repost of an interesting historical example: Charles Minard’s Flow Map of Napoleon’s Russian Campaign of 1812 Although made about 200 years ago, I think it nicely combines elements of both!

120

Robert Vief @robertvief.bsky.social · 27/11/2023

#30DayMapChallenge | Day 27 | Dot Residents with Turkish Migration History in Berlin, Germany Can you spot any East/West trends here (as a small visual aid, the former Berlin Wall is also shown...) - even after such a long time after the fall of the Wall? #rspatial #rstats

#30DayMapChallenge | Day 27 | Dot

Residents with Turkish Migration History in Berlin, Germany | Design: Robert Vief

030

Robert Vief @robertvief.bsky.social · 26/11/2023

#30DayMapChallenge | Day 26 | Minimal Just the four largest German cities as points, that's it #rspatial #rstats

010

Robert Vief @robertvief.bsky.social · 25/11/2023

#30DayMapChallenge | Day 25 | Antarctica Where to find some animals from Antarctica in Berlin, Germany... PS: Good reminder that the Tierpark (East) is significantly larger than the Zoologischer Garten (West) #rstats #rspatial

#30DayMapChallenge | Day 25 | Antarctica

Where to find some animals from Antarctica in Berlin, Germany... | Desingn: Robert Vief

010

Robert Vief @robertvief.bsky.social · 25/11/2023

#30DayMapChallenge | Day 24 | Black & White LISA Clusters of % Black/White population in New York City (LISA = Local Indicators of Spatial Autocorrelation) As you can see: lots of overlaps between Low-Low and High-High clusters. Or in other words: Whites often do not live where Blacks live

010

Robert Vief @robertvief.bsky.social · 23/11/2023

Together with a great group of colleagues, we organize a session on "School segregation across the North and South: exploring the interplay between households’ choice and public policy" at the RC21 conference next year. Session description: rc21conference2024.coes.cl/panel-74/ Deadline: Dec 31st

120

Robert Vief @robertvief.bsky.social · 23/11/2023

#30DayMapChallenge | Day 23 | 3D I don't particularly like 3D visualizations on top of 2D maps (which already are a distortion), they don't make it easier to correctly (visually) interpret the data. However, one 3D example I really like are: maps for blind persons

#30DayMapChallenge | Day 23 | 3D

Map for blind persons | historical map of Berlin and Cölln in the 13th century

#30DayMapChallenge | Day 23 | 3D

Map for blind persons. Historical Map of occupation zones after 1945 in Berlin

100

Robert Vief @robertvief.bsky.social · 22/11/2023

#30DayMapChallenge | Day 22 | North is not always up The tourist map of the city of Bilbao, Spain One of the few official city maps that does not point to the north. I came across it when I was 18, traveling through Spain and was very confused comparing it with Google Maps 😅

000

Robert Vief @robertvief.bsky.social · 21/11/2023

#30DayMapChallenge | Day21 | Raster fine-grid raster data from the German census 2011 % of Women among the overall Population in Germany PS: you can easily just get the raster files from the German census via this package from Stefan Jünger: stefanjuenger.github.io/z11/articles...

#30DayMapChallenge | Day21 | Raster

fine-grid raster data from the German census 2011

% of Women among the overall Population in Germany | Robert Vief

110

Robert Vief @robertvief.bsky.social · 20/11/2023

#30DayMapChallenge | Day 20 | Outdoors Berlin does not only have buildings, streets and railways, but of course also a lot of: nature! Green volume in Berlin, Germany, as measured by the m3/m2 of vegetation height on the block level, in 2020 #rspatial #rstats

#30DayMapChallenge | Day 20 | Outdoors| Design: Robert Vief| Green volume in Berlin, Germany, as measured by the m3/m2 of vegetation height on the block level, in 2020

040

Robert Vief @robertvief.bsky.social · 19/11/2023

#30DayMapChallenge | Day 19 | 5 minute map Today: just a repost from rbb24 Germany sometimes has very simple linguistic markers of where you come from for some words. For example, no (native) Berliner would call this delicious pastry a "Berliner", but always "Pfannkuchen"

Karte vom rbb, Quelle: https://x.com/rbb24/status/1723319199445987537?s=20

110

Robert Vief @robertvief.bsky.social · 18/11/2023

#30DayMapChallenge | Day 18 | Atmosphere Air Pollution (measured by pm25 concentration) in Europe in 2021 If you don't want to breathe bad air, you'd better not go to the south of Poland or the north of Italy (both regions are well above the exposure limits) #rstats #rspatial

#30DayMapChallenge | Day 18 | Atmosphere

Air Pollution (measured by pm25 concentration) in Europe in 2021 | Robert Vief

020

Robert Vief @robertvief.bsky.social · 17/11/2023

#30DayMapChallenge | Day17: Flows Quite some difference between internal and external net migration (Berlin, Germany, 2013-2018) While for within-moves, inner-city areas mostly lost residents, the opposite is true for external migration (inner-city areas gained most population)

#30DayMapChallenge | Day17: Flows | Internal net migration 2013-2018 in Berlin | Robert Vief

#30DayMapChallenge | Day17: Flows | External net migration 2013-2018 in Berlin | Robert Vief

020