Lena Hahn

🚨 Deadline tomorrow! 🚨

You are someone who does quantitative #metascience? Want to do this as a #professor? With a research-focused, tenure-track position in Germany? At a great institute with a super smart and fun team? This one is for you! 🤗

At ZPID we are searching for a tenure track assistant professor for Psychological Metascience in joint appointment with @unitrier.bsky.social preferably someone who has conducted quantitative research in metascience in psychology or related disciplines. Questions? Feel free to contact me personally.

Job opportunity — Junior Professorship in Psychological Metascience @zpid.bsky.social leibniz-psychology.onlyfy.jobs/job/10kku5n7 h/t @bethclarke.bsky.social

🧵 New paper alert!
People enjoy eating meat but often feel uneasy when being reminded that it comes from animals. To understand how people avoid this conflict, our new study explores how food preparation helps people mentally separate meat from its animal origins. Here’s what we found 👇
1/9

Researchers are often advised to "reveal the person behind the science" in #scicomm to appear more approachable and trustworthy to their audiences. But does this really work? 🤔 In this short piece for Current Opinion in Psych, I review the recent literature... 👇 1/3
doi.org/10.1016/j.co...

In a new preprint led by @abitter.bsky.social we tested whether open data is useful for reproducibility and usage based on automated and human assessment of data FAIRness. The short answer is: in the majority of cases not really. For more information 👇

The deadline for the meeting on counterfactuals is coming up. Don't forget to send in your contribution.

Great work by @abitter.bsky.social @mariogollwitzer.bsky.social @kaisassenberg.bsky.social @t-1m.bsky.social et al. on FAIR data sharing in Psychology.

They also suggest 6 simple checks that can be implemented in the editorial process to improve data FAIRness.

We're organizing an EASP small group meeting on counterfactuals in March 2026. More details can be found here:
www.easp.eu/news/itm/eas...

Do you sometimes feel torn when making decisions, like whether to eat unhealthy food or recycle? This is called felt ambivalence: a psychological discomfort from having mixed feelings about something. Check out our new work to know how people resolve such conflicts: doi.org/10.1016/j.je... 🧠💥 1/10

Flexibility mindsets enhance pro-environmental behavioral intentions among those with a low pro-environmental default tendency Environmental psychology provides several promising approaches to enhance pro-environmental behavior. However, these are usually only effective within…

New paper alert: @kwinter.bsky.social Laura Henn, and I show in 3 studies (N = 1005) that flexibility mindsets (induced by cognitive conflicts) enhance pro-environmental behavioral intentions among those initially low in pro-environmental attitudes.

www.sciencedirect.com/science/arti...

Doctoral Researcher (m,f,x)

🚨 We’re hiring! 🚨
The Social&Environmental Psychology Group @ruhr-uni-bochum.de is recruiting 2 PhDs and 1 Postdoc
as part of the ERC-funded SUSCON project on sustainable consumption.

Details here:

PhDs:👉 jobs.ruhr-uni-bochum.de/jobposting/7...

Postdoc:👉 jobs.ruhr-uni-bochum.de/jobposting/e...

I'm looking forward to giving a keynote at the PMGS Meta Research Symposium 2025, where I will talk about my meta-scientific work on preregistration and and my experiences of being part of the open science movement as an early career researcher!✨ #OpenScience @zpid.bsky.social

Meta Research Symposium 2025 PMGS PMGS Meta Research Symposium 2025 16-17 October 2025, TU/e Eindhoven Conference website: https://paulmeehlschool.github.io/workshops/ Program Day 1 - Pre-Symposium Mini-Workshop Time Activity…

The full program for the PMGS Meta Research Symposium 2025 is online: docs.google.com/document/d/1... If you are interested in causal inference, systematic review, hypothesis testing, and preregistration, join is October 17th in Eindhoven! Attendance is free!

Excited to announce that my paper with @lpummerer.bsky.social, @sonja-utz.de & @kaisassenberg.bsky.social on conspiracy beliefs is published. We examined the relationship between conspiracy beliefs and procedural justice during the peak and decay of the pandemic.

53% of preregistrations included all procedural specifications & 10% all transparency elements. The completeness of preregistration was unrelated to JIF and TOP Factor of the journal in which the preregistered study was published. We discuss how the completeness of preregistrations can be improved.

We used @zpid.bsky.social PSYNDEX database to sample preregistrations from articles published by psychologists from institutions in German-speaking countries in 2020. We coded 6 procedural specifications (e.g., planned sample size) & 6 transparency elements (e.g., sample size justification)

A Cross-Sectional Study of the Completeness of Preregistrations by Psychological Authors From German-Speaking Institutions - Lena Hahn, Andreas Glöckner, Mario Gollwitzer, Jens Hellmann, Jens Lange, S... Preregistering confirmatory research aims at reducing researchers’ degrees of freedom and increasing transparency to ultimately increase replicability. Yet the ...

How complete are preregistrations?

Short answer: 53% include all 6 procedural specifications

Medium answer: 🧵

Long answer: check out my publication with A. Glöckner @mariogollwitzer.bsky.social J. Hellmann, J. Lange, S. Schindler & @kaisassenberg.bsky.social

doi.org/10.1177/2515...

I’m excited to share my first first-authored paper with @abitter.bsky.social in the Journal of Happiness Studies:

“The Emotional Climate of Academia: Exploring Social Media Data as an Indicator of Well‑Being.”

📖 Read it here (OA): link.springer.com/article/10.1...

Am 14. September gibt es in Bochum eine Abendrevue zu Verschwörungserzählungen, die ich mit @pialamberty.bsky.social und @lpummerer.bsky.social gestalte unter Mitwirkung von @tobiasrothmund.bsky.social und sekten-info-nrw.de. Tickets sind begrenzt und unter dem Link bestellbar.

Victims of Conspiracies? An Examination of the Relationship Between Conspiracy Beliefs and Dispositional Individual Victimhood Conspiracy beliefs have been linked to perceptions of collective victimhood. We adopt an individual perspective on victimhood by investigating the relationship between conspiracy beliefs and the indi....

🚨 Fresh off the press 🚨 Our #TISP spin-off paper on the relationship between #ConspiracyBeliefs and individual #victimhood is now out! doi.org/10.1002/ejsp...
1/8 🧵

Fresh of the press! I'm incredibly proud of this new paper by Kiki Vu and myself where we show how much bias is introduced when people use workarounds to test interaction hypotheses meta-analytically. Check it out: advances.in/psychology/1...

The Paul Meehl Graduate School Meta Research Symposium 2025 is on October 17. Keynote speakers are @uyguntunc.bsky.social and @lspitzer.bsky.social. The symposium is free to attend for everyone - also if you are not a PhD student. And will soon announce an extra workshop the afternoon of the 16th.

Today, my dear colleague @annameret.bsky.social presented our work on data sharing in psychology at @icssi.bsky.social ✨We show that open data is findable, but less reusable.
Preprint coming soon, preregistration available on PsychArchives: doi.org/10.23668/psy...

#Metascience #SciSci #ICSSI2025

PCI Psychology is here!! 🎉🥳

After over a year of hard work by so many people, we are thrilled to announce that we are open for submissions! Join us in making publishing more efficient, equitable, and open: psych.peercommunityin.org
#PsychSciSky #scipub

Mapping, understanding and reducing belief in misinformation about electric vehicles - Nature Energy Across four countries, more people agree with misinformation statements about electic vehicles than disagree with them, and conspiracist mentality is the strongest predictor of this agreement. Interac...

🥳New paper on belief in #misinformation about electric vehicles led by Chris Bretter w Sam Pearson, Matthew Hornsey, Belinda Wade & Kevin Winter out in @natenergy.nature.com. Conspiracy beliefs are the strongest predictor and #ChatGPT helps to reduce belief in misinformation
doi.org/10.1038/s415...

Whom do we want to see in power? People high in both benevolence and integrity - that's what a new paper by Annika Scholl, H Rapp, Gerben van Kleef and myself shows. 4 Studies (N=1151) provide consistent evidence for this interaction effect. Delighted to see this work out doi.org/10.1037/xap0...

New preprint! We meta-analyzed data from 1,114 studies to identify the strongest correlates of migrants' adaptation to living abroad. Co-authored by Kiki Vu, George Tong, Mike Cheung, Nora Benningstad, Evita van Duin, Karine Lindholm, Colleen Ward, and @kunstjonas.bsky.social
osf.io/preprints/ps...

Call for submission: Paul Meehl Graduate School Meta Research Symposium 2025 | Paul Meehl Graduate School We are delighted to announce the second round of the Paul Meehl Graduate School’s Meta-Research Symposium, which will kick off...

Call for submissions: Paul Meehl Graduate School Meta Research Symposium 2025!

October 17, 2025, at Eindhoven University of Technology

Keynotes: Dr. Duygu Uygun-Tunç and Dr. Lisa Spitzer

ECR's: Submit your talk before 31st of June!

paulmeehlschool.github.io/2025-05-26-p...