4/4 🌱— Why this could be important?
1️⃣ More accurate prediction of how attitudes and behaviors spread.
2️⃣ Improving network interventions, especially those identifying central individuals.
3️⃣ Interaction between friendship influence and norms — e.g., when they pull adolescents in different directions.

3/4 👫We also examined ingroup vs outgroup friends — both influenced adolescents, in distinct ways. Focusing only on #friendships can miss who is influential and how change spreads. Studying friends + norms together offers a more accurate map of influence.

2/4 💡Have you tried to capture norms with networks?
We used longitudinal #SocialNetworks and SAOM to estimate friendship influence and group-based normative pressure in one framework — contributing to a clearer understanding of the channels through which change travels.
#NetworkScience
#socialpsych

1/4 📢 New paper in PSPB with Andreas Flache!

How do attitudes & behaviors spread?
#SocialInfluence among #adolescents isn’t just passed from friend to friend — it also flows through group norms. Both channels shaped academic drive, #prejudice, #religiosity.

👉DOI: 10.1177/01461672251366388

Does anyone know of a direct comparison between EU countries in terms of metrics used to evaluate universities and/or academic researchers? I'm especially interested in whether one can contrast countries that use N publications with those that don't. I suspect it's not so simple though

🚨 3-year postdoc opening in Brno (Czechia)!
Join Sylvie Graf and me to study polarization & intergenerational relations.

Start: Sept 2025 (flexible)
📅 Deadline: June 30

More details here:

euraxess.ec.europa.eu/jobs/349285

Please help spread the offer.

#postdoc #psychology

Some 100 private jets will fly to Venice for Jeff Bezos' wedding, and I recycle yoghurt cup lids.

🚨 3-year postdoc opening in Brno (Czechia)!
Join Sylvie Graf and me to study polarization & intergenerational relations.

Start: Sept 2025 (flexible)
📅 Deadline: June 30

More details here:

euraxess.ec.europa.eu/jobs/349285

Please help spread the offer.

#postdoc #psychology

Check out our registered report @ispp-pops.bsky.social doi.org/10.1111/pops..., in which we present a four-wave field experiment combined with network analysis. We cannot make it without our social network expert @tzingora.bsky.social and my PhD supervisors @pruthie.bsky.social and Daan Scheepers!

📢 Call for Abstracts for the Annual Meeting of the Network for Empirical-Analytical Social Research on Muslims (NAFS) on September 15 & 16 @goetheuni.bsky.social in Frankfurt, Germany.

Call is here: www.goethe-university-frankfurt.de/170436331/Cf...?

Thanks for sharing! 👍

📢 PhD Opportunity at Masaryk University! 🎓 We seek 2 PhD students for the PRINS project on partnership trajectories & intergenerational relations. Apply by 31.03.2025! More info here: soc.fss.muni.cz/aktuality/jo...

Your dignity honors the bravery of the Ukrainian people.

Be strong, be brave, be fearless.
You are never alone, dear President Zelenskyy.

We will continue working with you for a just and lasting peace.

King's College London launches the Atlas of Longitudinal Datasets, in partnership with @wellcometrust.bsky.social / @mqmentalhealth.bsky.social, a free platform with over 1,600 datasets, to support mental health research worldwide. 🌍

Read more and learn how to access: www.kcl.ac.uk/news/kings-l...

5/5 Social network analysis is an exciting way to study intergroup contact. Curious about what comes next!

4/5 Social influence from friends was crucial! When we acknowledge that adolescents are influenced by friends' prejudice in the first place, having outgroup friends might no longer matter for prejudice. Plus, just exposure to outgroup peers positively shaped outgroup attitudes.

3/5 In longitudinal data, I found a negative link between outgroup friends and outgroup attitudes, as usual. However, SAOM studies typically include an additional factor: social influence. Adolescents might change their attitudes in the direction of their friends' attitudes.

2/5 Do SAOM studies really find no evidence for the link between intergroup friendship and outgroup attitudes? To answer this question, I conducted a meta-analysis that confirmed this puzzle.

1/5 ⚡️Paper alert🧩Puzzle: social network studies (SAOM) often find no effect of having outgroup friends on prejudice in schools.💡Reason? Accounting for the social influence of friends. 🔍An outgroup size was linked to lower prejudice. [Link](https://doi.org/10.1111/bjso.12797).

4/4 💡The exposure to outgroup peers - the number of outgroup peers in a school grade - had a positive effect on the development of outgroup attitudes.

3/4 💡Study 2. In a subsequent preregistered study, the number of outgroup friends was associated with outgroup attitudes when relying on correlations or a simple cross-lagged model, but when I applied SAOM. The reason was controlling for the social influence of friends.

2/4 💡Study 1. In a preregistered meta-analysis of SAOM (stochastic actor-oriented modeling) studies, the effect of intergroup friendship on outgroup attitudes was found non-significant.

1/4 ⚡️Preprint⚡️I put into question the effect of intergroup friendship on outgroup attitudes in schools while showing the importance of social influence and exposure to outgroup peers. It highlights the benefits of social network analysis and SAOM. doi.org/10.31234/osf.io/zdc9j