Lena Hahn
@lenahahn.bsky.social
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.
Pinned
Lena Hahn
@lenahahn.bsky.social
· Aug 18
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 ...
doi.org
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...
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...
Reposted by Lena Hahn
🧵 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
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
November 11, 2025 at 8:02 AM
🧵 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
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
Reposted by Lena Hahn
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...
doi.org/10.1016/j.co...
Redirecting
doi.org
November 3, 2025 at 1:01 PM
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...
doi.org/10.1016/j.co...
Reposted by Lena Hahn
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 👇
How FAIR is shared data in psychology?
We analyzed 11,384 datasets (2013–2024): They're findable, but less reusable!
What relates most to differences in FAIRness? #Repository choice.
👉 Preprint: doi.org/10.23668/psy...
@mariogollwitzer.bsky.social @kaisassenberg.bsky.social #metascience #SciSci
We analyzed 11,384 datasets (2013–2024): They're findable, but less reusable!
What relates most to differences in FAIRness? #Repository choice.
👉 Preprint: doi.org/10.23668/psy...
@mariogollwitzer.bsky.social @kaisassenberg.bsky.social #metascience #SciSci
October 21, 2025 at 9:50 AM
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 👇
Reposted by Lena Hahn
The deadline for the meeting on counterfactuals is coming up. Don't forget to send in your contribution.
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...
www.easp.eu/news/itm/eas...
October 21, 2025 at 6:32 AM
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.
They also suggest 6 simple checks that can be implemented in the editorial process to improve data FAIRness.
October 21, 2025 at 6:08 AM
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.
They also suggest 6 simple checks that can be implemented in the editorial process to improve data FAIRness.
Reposted by Lena Hahn
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...
www.easp.eu/news/itm/eas...
September 24, 2025 at 5:55 AM
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...
www.easp.eu/news/itm/eas...
Reposted by Lena Hahn
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
Redirecting
doi.org
September 1, 2025 at 8:58 AM
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
Reposted by Lena Hahn
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...
www.sciencedirect.com/science/arti...
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…
www.sciencedirect.com
August 28, 2025 at 7:14 AM
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...
www.sciencedirect.com/science/arti...
Reposted by Lena Hahn
🚨 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...
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...
Doctoral Researcher (m,f,x)
jobs.ruhr-uni-bochum.de
August 26, 2025 at 7:41 AM
🚨 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...
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...
Reposted by Lena Hahn
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
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!
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…
docs.google.com
August 21, 2025 at 1:14 PM
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
Reposted by Lena Hahn
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!
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…
docs.google.com
August 20, 2025 at 2:34 PM
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!
Reposted by Lena Hahn
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.
August 19, 2025 at 12:08 PM
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.
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...
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...
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 ...
doi.org
August 18, 2025 at 11:06 AM
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...
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...
Reposted by Lena Hahn
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...
“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...
July 23, 2025 at 7:37 PM
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...
“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...
Reposted by Lena Hahn
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.
July 22, 2025 at 10:45 AM
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.
Reposted by Lena Hahn
🚨 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 🧵
1/8 🧵
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....
doi.org
July 18, 2025 at 8:32 AM
🚨 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 🧵
1/8 🧵
Reposted by Lena Hahn
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...
July 8, 2025 at 9:32 AM
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...
Reposted by Lena Hahn
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.
June 25, 2025 at 7:49 AM
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.
Reposted by Lena Hahn
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
Preprint coming soon, preregistration available on PsychArchives: doi.org/10.23668/psy...
#Metascience #SciSci #ICSSI2025
June 16, 2025 at 4:03 PM
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
Preprint coming soon, preregistration available on PsychArchives: doi.org/10.23668/psy...
#Metascience #SciSci #ICSSI2025
Reposted by Lena Hahn
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
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
June 11, 2025 at 11:03 PM
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
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
Reposted by Lena Hahn
🥳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...
doi.org/10.1038/s415...
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...
doi.org
June 9, 2025 at 1:28 PM
🥳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...
doi.org/10.1038/s415...
Reposted by Lena Hahn
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...
June 6, 2025 at 5:17 AM
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...
Reposted by Lena Hahn
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...
osf.io/preprints/ps...
May 26, 2025 at 4:34 PM
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...
osf.io/preprints/ps...
Reposted by Lena Hahn
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...
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...
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...
paulmeehlschool.github.io
May 26, 2025 at 3:21 PM
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...
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...
Reposted by Lena Hahn
📢 Our colloquium series continues!
🗓 Wednesday, May 21, 2025
🕑 2:00–3:00 PM (CET)
🎙 Dr. Daniel Toribio-Flórez, will speak in English about:
"Consequences of conspiracy beliefs for interpersonal relationships"
📍 on-site or online: all details here👉 leibniz-psychology.org/en/products/...
🗓 Wednesday, May 21, 2025
🕑 2:00–3:00 PM (CET)
🎙 Dr. Daniel Toribio-Flórez, will speak in English about:
"Consequences of conspiracy beliefs for interpersonal relationships"
📍 on-site or online: all details here👉 leibniz-psychology.org/en/products/...
Kolloquium for interested persons
Consequences of conspiracy beliefs for interpersonal relationships
leibniz-psychology.org
May 13, 2025 at 2:35 PM
📢 Our colloquium series continues!
🗓 Wednesday, May 21, 2025
🕑 2:00–3:00 PM (CET)
🎙 Dr. Daniel Toribio-Flórez, will speak in English about:
"Consequences of conspiracy beliefs for interpersonal relationships"
📍 on-site or online: all details here👉 leibniz-psychology.org/en/products/...
🗓 Wednesday, May 21, 2025
🕑 2:00–3:00 PM (CET)
🎙 Dr. Daniel Toribio-Flórez, will speak in English about:
"Consequences of conspiracy beliefs for interpersonal relationships"
📍 on-site or online: all details here👉 leibniz-psychology.org/en/products/...