Ulrike Hahn
Ulrike Hahn boosted the activity
"We analyse the migration of 300,000 academic users from Twitter/X to Bluesky between 2023 and early 2025, combining rich bibliometric data, longitudinal social-media activity, and a novel cross-platform identity-matching pipeline. We show that 18% of scholars in our sample transitioned, with transition rates varying sharply by discipline, political expression, and Twitter engagement but not by traditional academic metrics. Using time-varying Cox models and a matched-pairs design, we isolate genuine peer influence from homophily. We uncover a striking asymmetry whereby information sources drive migration far more powerfully than audience, with this influence decaying exponentially within a week. We further develop an ego-level contagion classifier, revealing that simple contagion drives two-thirds of all exits, shock-driven bursts account for 16%, and complex contagion plays a marginal role. Finally, we show that scholars who rebuild a higher fraction of their former Twitter networks on Bluesky remain significantly more active and engaged. Our findings provide new insights onto theories of network externalities, directional influence, and platform migration, highlighting information sources’ central role in overcoming switching costs."

https://arxiv.org/html/2505.24801v1

#SocialMedia#SocialNetworks#Twitter#Bluesky#Academia#Universities#HigherEd

Ulrike Hahn
Ulrike Hahn boosted the activity
📢Symposium on 25-9: #Academia at the #digital crossroads. Opportunities, risks, and #AcademicFreedom in the age of #BigTech & #AI

🔗https://www.rug.nl/library/calendar/250925-academia-at-the-digital-crossroads

Opening: @universityofgroningen Rector Jacquelien Scherpen

Lectures: Tamar Sharon & Juliette Schaafsma

Panel w/ Michiel Kolman (Elsevier)
@FleurZeldenrust (Young Academy NL)
David Cheruiyot ( @YAGroningen)
Nolda Tipping-Griffioen ( @CIT_RUG)
Marijke Folgering ( @Bibliothecaris)
Host: Titus Stahl @tstahl

#OpenScience#DigitalSovereignty

Excellent: "More than 100 institutions and funders worldwide have confirmed that research published in #eLife continues to be considered in hiring, promotion, and funding decisions, following the journal’s bold move to forgo its Journal Impact Factor."
https://elifesciences.org/for-the-press/bf74b86e/more-than-100-institutions-and-funders-confirm-recognition-of-elife-papers-signalling-support-for-open-science

PS: This is not just a step to support eLife, but a step to break the stranglehold of bad metrics in research assessment. For the same reason, it's a step toward more honest and less simplistic assessment.

#Academia#Assessment#JIF#Metrics#Universities
@academicchatter