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Lena Hahn

@lenahahn

PostDoc | Uni Trier and Leibniz Institute for Psychology @zipd.bsky.social | Research interest: Prefactual thinking, cognitive conflict, and network analysis. All views are my own.

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01.05.2024
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Latest posts by Lena Hahn @lenahahn

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How strong is the threat to academic freedom? If you are a publishing psychologist, please help us get a better understanding of the threats due to external pressure and self-censorship in the publication process by taking our 5-10 min anonymous survey: t1p.de/t1qof
Results will be shared here!

19.02.2026 12:09 πŸ‘ 12 πŸ” 15 πŸ’¬ 1 πŸ“Œ 2

Thank you for your feedback! We have added a comment field at the end of the survey. Given that a number of responses are already in, we are hesitant to change the questions beyond this, despite your suggestions being interesting and relevant.

19.02.2026 16:26 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

πŸ’₯ Academic freedom - so important!

Please help our research team and take time for their survey:

19.02.2026 12:49 πŸ‘ 4 πŸ” 5 πŸ’¬ 0 πŸ“Œ 0
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How strong is the threat to academic freedom? If you are a publishing psychologist, please help us get a better understanding of the threats due to external pressure and self-censorship in the publication process by taking our 5-10 min anonymous survey: t1p.de/t1qof
Results will be shared here!

19.02.2026 12:09 πŸ‘ 12 πŸ” 15 πŸ’¬ 1 πŸ“Œ 2
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Postdoctoral Researcher (f/m/d)

We are hiring πŸ‘‰ Postdoctoral Researcher (f/m/d)

Would you like to start working at our beautiful institute this coming spring?

#psychology #openscience #metascience

Find out more here: leibniz-psychology.onlyfy.jobs/job/ylp9kss4

17.02.2026 09:41 πŸ‘ 1 πŸ” 7 πŸ’¬ 0 πŸ“Œ 0

Also calling on a couple of feeds - thanks to all who already participated! 😊 #socialpsyc #psycsci #psychscisky #psychologie #academicsky #OpenSci #PhDSky

16.02.2026 09:38 πŸ‘ 3 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Fragebogen | Seite 1

Dear colleagues - we want to better understand perceptions of data fraud and its detection and need your support! Are you currently a #researcher in #psych (or related fields) working with #data? Perfect - please respond to & share this short study (7min): sosci.rlp.net/detection/?r... Thank you!! 🫢

11.02.2026 15:08 πŸ‘ 14 πŸ” 17 πŸ’¬ 1 πŸ“Œ 2

🚨 Deadline tomorrow! 🚨

05.01.2026 09:39 πŸ‘ 5 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0

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! πŸ€—

26.11.2025 12:54 πŸ‘ 15 πŸ” 12 πŸ’¬ 1 πŸ“Œ 2

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.

26.11.2025 10:37 πŸ‘ 17 πŸ” 18 πŸ’¬ 0 πŸ“Œ 2

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

26.11.2025 03:10 πŸ‘ 23 πŸ” 23 πŸ’¬ 1 πŸ“Œ 2

🧡 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 πŸ‘‡
1/9

11.11.2025 08:02 πŸ‘ 4 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
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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? πŸ€” In this short piece for Current Opinion in Psych, I review the recent literature... πŸ‘‡ 1/3
doi.org/10.1016/j.co...

03.11.2025 13:01 πŸ‘ 24 πŸ” 9 πŸ’¬ 3 πŸ“Œ 4

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 πŸ‘‡

21.10.2025 09:50 πŸ‘ 3 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

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

21.10.2025 06:32 πŸ‘ 2 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0

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.

21.10.2025 06:08 πŸ‘ 16 πŸ” 10 πŸ’¬ 0 πŸ“Œ 0
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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...

24.09.2025 05:55 πŸ‘ 9 πŸ” 4 πŸ’¬ 0 πŸ“Œ 1
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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... 🧠πŸ’₯ 1/10

01.09.2025 08:58 πŸ‘ 8 πŸ” 6 πŸ’¬ 2 πŸ“Œ 1
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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...

28.08.2025 07:14 πŸ‘ 6 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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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:πŸ‘‰ jobs.ruhr-uni-bochum.de/jobposting/7...

Postdoc:πŸ‘‰ jobs.ruhr-uni-bochum.de/jobposting/e...

26.08.2025 07:41 πŸ‘ 39 πŸ” 48 πŸ’¬ 0 πŸ“Œ 5

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

21.08.2025 13:14 πŸ‘ 14 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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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!

20.08.2025 14:34 πŸ‘ 21 πŸ” 13 πŸ’¬ 0 πŸ“Œ 3

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.

19.08.2025 12:08 πŸ‘ 11 πŸ” 7 πŸ’¬ 1 πŸ“Œ 1

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.

18.08.2025 11:09 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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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)

18.08.2025 11:09 πŸ‘ 3 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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A Cross-Sectional Study of the Completeness of Preregistrations by Psychological Authors From German-Speaking Institutions - Lena Hahn, Andreas GlΓΆckner, 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. GlΓΆckner @mariogollwitzer.bsky.social J. Hellmann, J. Lange, S. Schindler & @kaisassenberg.bsky.social

doi.org/10.1177/2515...

18.08.2025 11:06 πŸ‘ 65 πŸ” 34 πŸ’¬ 1 πŸ“Œ 2
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I’m excited to share my first first-authored paper with @abitter.bsky.social in the Journal of Happiness Studies:

β€œThe Emotional Climate of Academia: Exploring Social Media Data as an Indicator of Well‑Being.”

πŸ“– Read it here (OA): link.springer.com/article/10.1...

23.07.2025 19:37 πŸ‘ 14 πŸ” 7 πŸ’¬ 2 πŸ“Œ 1
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Am 14. September gibt es in Bochum eine Abendrevue zu VerschwΓΆrungserzΓ€hlungen, 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.

22.07.2025 10:45 πŸ‘ 39 πŸ” 20 πŸ’¬ 5 πŸ“Œ 1
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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 🧡

18.07.2025 08:32 πŸ‘ 60 πŸ” 25 πŸ’¬ 3 πŸ“Œ 9
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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...

08.07.2025 09:32 πŸ‘ 4 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0