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Simon Columbus

@simoncolumbus.bsky.social

448 Following1k Followers

Lecturer, University of St Andrews | I work on cooperation, norms, institutions, & personality | http://simoncolumbus.com

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@simoncolumbus.bsky.socialOct 10, 2026, 5:53 PM

Excellent thread with relevance well beyond Berlin.

@simoncolumbus.bsky.socialOct 9, 2026, 2:32 PM

Nice real-world example of plausible deniability creating moral wiggle room: conservative MPs secretly vote for a far-right candidate but publicly claim to have abstained: 8 claimed abstentions vs 5 actual. Group-level dishonesty is evident, but individual MPs can hide behind plausible deniability.

@simoncolumbus.bsky.socialOct 9, 2026, 12:40 PM

Der Kontaktmechanismus ist schon plausibel (gibt erstaunlicherweise anscheinend keine starken Tests der Kontakthypothese bzgl Menschen mit Behinderung -- das wär doch mal was für die mitlesenden Ökonomen), wobei die Base Rate für Kontakt schon jetzt niedrig sein dürfte.

@simoncolumbus.bsky.socialOct 9, 2026, 10:35 AM

Ich würde auch von hohen Nutzungsraten nicht darauf schließen, dass irgendwer gedrängt wird, selbst wenn vor Einführung mehr Skepsis herrscht. Status quo bias und so. Da müsste man schon zeigen, dass Frauen diese Leistungen in Anspruch nehmen, obwohl sie das selbst nicht wollen.

@simoncolumbus.bsky.socialOct 9, 2026, 8:55 AM

Das mit der Schuldverschreibung finde ich nachvollziehbar, aber das trifft ja die Eltern. Zur Diskriminierung meine ich mal das Argument gesehen zu haben, dass weniger Menschen mit Behinderung auch weniger Kontakt bedeutet, was Effekte auf Einstellungen haben könnte; ist halt alles hypothetisch.

@simoncolumbus.bsky.socialOct 9, 2026, 8:37 AM

Ist tatsächlich der falsche Antrag, noch aus der letzten Legislaturperiode. Das ist der derzeitige, sind aber die gleichen Autoren, meine ich: dserver.bundestag.de/btd/21/038/2...

@simoncolumbus.bsky.socialOct 9, 2026, 8:35 AM

Ein Argument ist ja immer, Pränataldiagnostik würde die Akzeptanz von Menschen mit Behinderungen reduzieren. Gibt's da eigentlich empirische Studien zu?

@simoncolumbus.bsky.socialOct 9, 2026, 8:32 AM

Der (überparteiliche) Antrag wurde mehrheitlich* von weiblichen Abgeordneten unterstützt: dserver.bundestag.de/btd/20/105/2...

Das Thema ist (zumindest) in Deutschland weder klar gegendert noch eindeutig links oder rechts zu verordnen.

* 55/108, wenn ich richtig gezählt habe

@simoncolumbus.bsky.socialOct 7, 2026, 8:23 AM

Can you bring this down again, please?

@simoncolumbus.bsky.socialSep 28, 2026, 11:35 AM

This week's Cooperation Colloquium:

Patricia Kanngiesser @patkanngiesser.bsky.social

Sustaining cooperation in intra- and inter-generational resource dilemmas

Date: October 2
Time: 15:00 UTC+2 (Vienna) / 9am NYC

Sign up: list.ku.dk/postorius/li...

Abstract: The world faces escalating environmental crises that demand cooperation within and across generations. Experimental games provide a testbed for studying sustainable decision-making and cooperation in a safe and controlled environment and for exploring underlying factors. In this talk, I will give an overview of past and ongoing research with children and adults, focusing on inter- and intra-generational sustainability dilemmas. In past work, we have shown that groups of children from two cultures successfully collaborated in a threshold public-goods game using water as a real resource (Kanngiesser et al., 2024). In recent work, we have employed a newly developed harvesting game with a depletable resource to study cooperation across generations of players—specifically, whether participants will adjust their harvesting behaviour and conserve resources better when they know that another, future player will depend on them. I will present new data from both adult participants and cross-cultural child participants on whether they make decisions that benefit themselves and/or future others. For adults, we also explore the role of task framing, cognitive factors (e.g. numeracy), and Social Value Orientation in their decision-making. I will discuss specific challenges of inter-generational collaboration: people might be motivated to benefit future others but might not know how to act to improve their own and others’ outcomes.
@simoncolumbus.bsky.socialSep 26, 2026, 10:14 PM

Worth noting that Berlin's current government (who just got voted out) have actively sought to dismantle cycling infrastructure. It's been a while since I lived in Berlin, but I wouldn't be surprised if Somerville had made more progress than Berlin in that time.

@simoncolumbus.bsky.socialSep 26, 2026, 9:05 PM

Das ist doch in diesem Feld (financial econometrics) schon lange der Fall. Noch dazu ist der Typ Ü60 und lange tenured. Die alte Leier von den falschen Anreizen passt hier hinten wie vorne nicht.

@simoncolumbus.bsky.socialSep 25, 2026, 3:07 PM

Somehow I did not know this.

@simoncolumbus.bsky.socialSep 23, 2026, 10:48 AM

Reviewer 2.0

@simoncolumbus.bsky.socialSep 23, 2026, 9:49 AM

Ich hab Textbausteine mit deinen Blogposts...

@simoncolumbus.bsky.socialSep 23, 2026, 9:41 AM

I sign my reviews so people don't think it's you, too

@simoncolumbus.bsky.socialSep 21, 2026, 10:50 AM

So far, I can confirm that it must be a number > 4. Guess I need to try 5 next time, just to make sure...

@simoncolumbus.bsky.socialSep 20, 2026, 8:47 PM

Everybody's posting about politics; meanwhile I'm here wondering whether there's a legal limit to the number of arepas I'm allowed to eat in a single sitting

@simoncolumbus.bsky.socialSep 18, 2026, 9:59 AM

Today's Cooperation Colloquium

@simoncolumbus.bsky.socialSep 14, 2026, 2:24 PMReposted by @simoncolumbus.bsky.social

Our first speaker this week is Kasper Otten (WODC/Erasmus University Rotterdam):

The ​co-occurrence of ingroup and outgroup prosociality across 121 societies

Friday, September 18
15:00 UTC+2 (Vienna) / 9am NYT / 21 Beijing

Sign up: list.ku.dk/postorius/li...

Abstract: ​In an increasingly interconnected world, prosociality across group boundaries becomes ever more important. Yet, a common premise in the behavioral and social sciences is that people are prosocial mainly toward their ingroup and not outgroups. So far, evidence for this premise comes mostly from studies in which people must choose between ingroup and outgroup prosociality, thereby precluding positive associations between the two types of prosociality. We study situations in which people make separate decisions regarding the ingroup and outgroup, allowing us to examine how ingroup and outgroup prosociality are related. Across six large-scale and cross-societal datasets spanning 743,402 individuals in 121 societies, we find a robust positive relationship between ingroup and outgroup prosociality. This relationship holds across societies, different group categorizations, and a diverse range of prosociality measures, including prisoner’s dilemmas, public good dilemmas, dictator games, and survey items on trust and tolerance. Although people are somewhat more prosocial toward their ingroup than the outgroup, those who are prosocial toward the ingroup also tend to be prosocial toward the outgroup. The results offer an optimistic message for prosociality across group boundaries. When people are not made to choose between the ingroup and outgroup, they are generally prosocial toward both.
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