Here is a summary report of the paper: csl.mpg.de/892188/how-p... (7/7)

Taken together, we present a new toolkit for measuring individual- and group-level social preferences, show that both are shaped by conflict experiences and perceptions, and demonstrate that they predict conflict engagement across diverse samples and group memberships. (6/7)

In a quasi-experimental Study 5 among US participants, we show that parochialism is elevated in high- relative to low-conflict group pairings, whereas altruism appears comparatively less depended on perceived conflict intensity. (5/7)

Study 4 employed a lab-in-the-field approach with members of the Nyangatom, a small-scale society in Ethiopia engaging in cross-border conflicts. We find that higher conflict experience is related to higher levels of altruism, particularly among participants with higher levels of parochialism. (4/7)

In Study 1, we validate our measurement toolkit, showing that altruism and parochialism are separate social preferences. In Studies 2-3, we find that individual-and group-level preferences independently predict participation in real-world conflict (football derby fans and political camps). (3/7)

Classic “parochial altruism” models assume two distinct preferences drive conflict participation:
𝗔𝗹𝘁𝗿𝘂𝗶𝘀𝗺: helping one’s ingroup at a personal cost,
𝗣𝗮𝗿𝗼𝗰𝗵𝗶𝗮𝗹𝗶𝘀𝗺: favoring ingroups over outgroups.
We develop a toolkit for measuring these individual- and group-level social preferences. (2/7)

Thank you all for your interest in our research. We hope this week's posts helped to raise some awareness for AMR and what we can do about it using social and behavioral science. #AMR #WorldAMRAwarenessWeek #WAAW2025 Join us in future research efforts: www.a-bc.network

The paper is available here: doi.org/10.1177/1359... (4)

However, when we induced empathy for future generations in the between-generations condition, antibiotic overuse in case of mild infections dropped. This suggests that how we frame the dilemma—and empathy-based interventions—can help promote more responsible antibiotic use. (3)

Santana et al. (2023) ran a preregistered study (N=996) using a behavioral game to test how people use antibiotics when the costs of resistance fall on their own vs. a future generation. Overuse in case of mild infections increased when the consequences were pushed onto future generations. (2)

Antibiotic use is a social and temporal dilemma: the benefits are immediate, but the costs—antibiotic resistance—arrive later. Today’s choices shape the effectiveness of antibiotics for future generations, so we have to use them wisely. (1)

I'm closing this week's joint thread of selected work on #AMR with a summary of a study conducted by my former PhD student Ana Santana.

@corneliabetsch.bsky.social @riangross.bsky.social @schneali.bsky.social @elisie.bsky.social @miroslavsirota.bsky.social @athorpe8.bsky.social @mariejuanchich.bsky.social @evakrockow.bsky.social @anicabuckel.bsky.social @cortneyprice.bsky.social @gerrymolloy.bsky.social @luciebd.bsky.social

We investigate how people process information, form expectations, and decide when to use antibiotics. Over the next few days, we’ll post research highlights in the replies. Stay tuned! @abc-network.bsky.social @icarsglobal.bsky.social @theamrnarrative.bsky.social

The deadline for applications is actually December 10. Sorry!

Join one of Europe’s largest and best psychology departments in one of the world’s most liveable cities. We offer competitive conditions. Further information: jobs.univie.ac.at/job/Tenure-T... (deadline for applications: December 12, 2025)