Sander Hermsen
@sanderhermsen.bsky.social
Behaviour Change (and) Design – Applied and fundamental research meets practice – Radboudumc and OnePlanet Research Centre, Nijmegen, NL – he/him/his – EN/NL/DE
Pinned
Sander Hermsen
@sanderhermsen.bsky.social
· Nov 10
Welcome to the 150+ new followers from the last couple of days 😃😳🤩 I guess most if not all of you have found me through the amazing Soc Psy starter pack by @markrubin.bsky.social, right?
Let me take this opportunity to introduce myself properly to all of you ⬇️
Let me take this opportunity to introduce myself properly to all of you ⬇️
Reposted by Sander Hermsen
Our Scientific Committee has been busy shaping plans for the 2026 Behaviour Change Conference! 🎉
💡 Don't forget the call for abstracts is open until 15 December
👉 www.ucl.ac.uk/behaviour-ch...
👏 Thanks to Co-Chairs Marta Marques & Felix Naughton & all Committee members for their expertise
💡 Don't forget the call for abstracts is open until 15 December
👉 www.ucl.ac.uk/behaviour-ch...
👏 Thanks to Co-Chairs Marta Marques & Felix Naughton & all Committee members for their expertise
November 12, 2025 at 4:00 PM
Our Scientific Committee has been busy shaping plans for the 2026 Behaviour Change Conference! 🎉
💡 Don't forget the call for abstracts is open until 15 December
👉 www.ucl.ac.uk/behaviour-ch...
👏 Thanks to Co-Chairs Marta Marques & Felix Naughton & all Committee members for their expertise
💡 Don't forget the call for abstracts is open until 15 December
👉 www.ucl.ac.uk/behaviour-ch...
👏 Thanks to Co-Chairs Marta Marques & Felix Naughton & all Committee members for their expertise
Reposted by Sander Hermsen
important on LLMs for academics:
1️⃣ LLMs are usefully seen as lossy content-addressable systems
2️⃣ we can't automatically detect plagiarism
3️⃣ LLMs automate plagiarism & paper mills
4️⃣ we must protect literature from pollution
5️⃣ LLM use is a CoI
6️⃣ prompts do not cause output in authorial sense
1️⃣ LLMs are usefully seen as lossy content-addressable systems
2️⃣ we can't automatically detect plagiarism
3️⃣ LLMs automate plagiarism & paper mills
4️⃣ we must protect literature from pollution
5️⃣ LLM use is a CoI
6️⃣ prompts do not cause output in authorial sense
![5 Ghostwriter in the Machine
A unique selling point of these systems is conversing and writing in a human-like way. This is imminently understandable, although wrong-headed, when one realises these are systems that
essentially function as lossy2
content-addressable memory: when
input is given, the output generated by the model is text that
stochastically matches the input text. The reason text at the output looks novel is because by design the AI product performs
an automated version of what is known as mosaic or patchwork
plagiarism (Baždarić, 2013) — due to the nature of input masking and next token prediction, the output essentially uses similar words in similar orders to what it has been exposed to. This
makes the automated flagging of plagiarism unlikely, which is
also true when students or colleagues perform this type of copypaste and then thesaurus trick, and true when so-called AI plagiarism detectors falsely claim to detect AI-produced text (Edwards, 2023a). This aspect of LLM-based AI products can be
seen as an automation of plagiarism and especially of the research paper mill (Guest, 2025; Guest, Suarez, et al., 2025; van
Rooij, 2022): the “churn[ing] out [of] fake or poor-quality journal papers” (Sanderson, 2024; Committee on Publication Ethics,](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:vsyj5jtayxcq5dw5mtja4xtb/bafkreieufyngjbrn23zkmesrimcwemxkxtaf2x7d3bedjt7bg65htgtkrm@jpeg)
October 10, 2025 at 10:33 AM
important on LLMs for academics:
1️⃣ LLMs are usefully seen as lossy content-addressable systems
2️⃣ we can't automatically detect plagiarism
3️⃣ LLMs automate plagiarism & paper mills
4️⃣ we must protect literature from pollution
5️⃣ LLM use is a CoI
6️⃣ prompts do not cause output in authorial sense
1️⃣ LLMs are usefully seen as lossy content-addressable systems
2️⃣ we can't automatically detect plagiarism
3️⃣ LLMs automate plagiarism & paper mills
4️⃣ we must protect literature from pollution
5️⃣ LLM use is a CoI
6️⃣ prompts do not cause output in authorial sense
Are you working on designing for #behaviourchange and #empowerment, in research or practice? We want to know what you think are the most important developments in this field and you can help by filling out this short questionnaire. lnkd.in/dKHV4WVG
September 26, 2025 at 9:40 AM
Are you working on designing for #behaviourchange and #empowerment, in research or practice? We want to know what you think are the most important developments in this field and you can help by filling out this short questionnaire. lnkd.in/dKHV4WVG
Reposted by Sander Hermsen
US political violence overwhelmingly comes from the right -
the side that calls for, glorifies, & literally pardons it
the side that calls for, glorifies, & literally pardons it
September 11, 2025 at 10:53 AM
US political violence overwhelmingly comes from the right -
the side that calls for, glorifies, & literally pardons it
the side that calls for, glorifies, & literally pardons it
When, and why, do health care professionals refer patients to lifestyle interventions?
This week, I presented work that helps answering this question at @ehps2025.bsky.social in Groningen, NL #ehps2025
Missed it? No worries! The poster is here: osf.io/wgfvm
This week, I presented work that helps answering this question at @ehps2025.bsky.social in Groningen, NL #ehps2025
Missed it? No worries! The poster is here: osf.io/wgfvm
August 29, 2025 at 1:20 PM
When, and why, do health care professionals refer patients to lifestyle interventions?
This week, I presented work that helps answering this question at @ehps2025.bsky.social in Groningen, NL #ehps2025
Missed it? No worries! The poster is here: osf.io/wgfvm
This week, I presented work that helps answering this question at @ehps2025.bsky.social in Groningen, NL #ehps2025
Missed it? No worries! The poster is here: osf.io/wgfvm
Reposted by Sander Hermsen
🚴♀️ Today we co-organized EHPS in Motion with 4TU.RECENTRE at the @ehps.bsky.social in Groningen!
An interactive bike tour with short activities, fun stops, and a DUO bike to symbolize teamwork in research 🤜🏼🤛🏼
Thanks to all who joined! 🌱🚲
#EHPS2025 #ISCycle #4TURECENTRE #activetravel
An interactive bike tour with short activities, fun stops, and a DUO bike to symbolize teamwork in research 🤜🏼🤛🏼
Thanks to all who joined! 🌱🚲
#EHPS2025 #ISCycle #4TURECENTRE #activetravel
August 27, 2025 at 7:47 PM
🚴♀️ Today we co-organized EHPS in Motion with 4TU.RECENTRE at the @ehps.bsky.social in Groningen!
An interactive bike tour with short activities, fun stops, and a DUO bike to symbolize teamwork in research 🤜🏼🤛🏼
Thanks to all who joined! 🌱🚲
#EHPS2025 #ISCycle #4TURECENTRE #activetravel
An interactive bike tour with short activities, fun stops, and a DUO bike to symbolize teamwork in research 🤜🏼🤛🏼
Thanks to all who joined! 🌱🚲
#EHPS2025 #ISCycle #4TURECENTRE #activetravel
On my way to Groningen for #EHPS2025! Looking forward to meeting so many wonderful colleagues, and presenting some work on when and why health care professionals (don’t) refer patients to lifestyle interventions. See you there!
@ehps2025.bsky.social
@ehps.bsky.social
@ehps2025.bsky.social
@ehps.bsky.social
August 26, 2025 at 9:03 AM
On my way to Groningen for #EHPS2025! Looking forward to meeting so many wonderful colleagues, and presenting some work on when and why health care professionals (don’t) refer patients to lifestyle interventions. See you there!
@ehps2025.bsky.social
@ehps.bsky.social
@ehps2025.bsky.social
@ehps.bsky.social
Reposted by Sander Hermsen
1/
"We found that people with Long COVID are often left to fend for themselves in a system that isn't adequately informed about their condition and doesn't offer them appropriate medical support":
www.news-medical.net/news/2025081...
"We found that people with Long COVID are often left to fend for themselves in a system that isn't adequately informed about their condition and doesn't offer them appropriate medical support":
www.news-medical.net/news/2025081...
Self-tracking empowers Long COVID patients amid medical dismissal
Despite the increasing recognition of Long COVID as a condition, many patients still face dismissal by medical professionals, misattribution of their symptoms to psychological causes, or simply being ...
www.news-medical.net
August 20, 2025 at 4:37 PM
1/
"We found that people with Long COVID are often left to fend for themselves in a system that isn't adequately informed about their condition and doesn't offer them appropriate medical support":
www.news-medical.net/news/2025081...
"We found that people with Long COVID are often left to fend for themselves in a system that isn't adequately informed about their condition and doesn't offer them appropriate medical support":
www.news-medical.net/news/2025081...
Finally an honest security notice
August 2, 2025 at 5:36 PM
Finally an honest security notice
Reposted by Sander Hermsen
When Covid-19 hit, health psychologists were just as poised to contribute to reducing the spreading and associated risks as scientists from other fields. A large bunch of us collaborated on this project, now finally published link.springer.com/article/10.3...
Collecting behavioural data across countries during pandemics: Development of the COVID-19 Risk Assessment Tool - Behavior Research Methods
Tools that can be used to collect behavioural data during pandemics are needed to inform policy and practice. The objective of this project was to develop the Your COVID-19 Risk tool in response to th...
link.springer.com
July 18, 2025 at 1:28 PM
When Covid-19 hit, health psychologists were just as poised to contribute to reducing the spreading and associated risks as scientists from other fields. A large bunch of us collaborated on this project, now finally published link.springer.com/article/10.3...
Reposted by Sander Hermsen
Today's inspiration
June 29, 2025 at 7:40 AM
Today's inspiration
Went to see Refik Anadol’s audiovisual reimagination of Frank Gehry’s architectural legacy through AI and generative art at the Guggenheim Bilbao last week.
Quite fitting that the work of the poster child of computer-aided architecture now gets reinterpreted by the poster child of AI-driven art
Quite fitting that the work of the poster child of computer-aided architecture now gets reinterpreted by the poster child of AI-driven art
June 26, 2025 at 7:15 PM
Went to see Refik Anadol’s audiovisual reimagination of Frank Gehry’s architectural legacy through AI and generative art at the Guggenheim Bilbao last week.
Quite fitting that the work of the poster child of computer-aided architecture now gets reinterpreted by the poster child of AI-driven art
Quite fitting that the work of the poster child of computer-aided architecture now gets reinterpreted by the poster child of AI-driven art
Apparently Trump, visiting the NATO summit, spent the night at the royal palace last night
HEMA, a popular Dutch department store, is letting everyone know that they have a product in stock that can remove orange stains from royal bed linens (available a mere 5-minute bike ride from the palace) 🔥
Je hebt bedrijven die willen aanhaken, en je hebt Hema die het kan
June 25, 2025 at 6:25 PM
Apparently Trump, visiting the NATO summit, spent the night at the royal palace last night
Reposted by Sander Hermsen
HEMA, a popular Dutch department store, is letting everyone know that they have a product in stock that can remove orange stains from royal bed linens (available a mere 5-minute bike ride from the palace) 🔥
Je hebt bedrijven die willen aanhaken, en je hebt Hema die het kan
June 25, 2025 at 5:41 PM
HEMA, a popular Dutch department store, is letting everyone know that they have a product in stock that can remove orange stains from royal bed linens (available a mere 5-minute bike ride from the palace) 🔥
Reposted by Sander Hermsen
A *null* result I'm very proud of!
Led by Rustam Romaniuc, 35 coauthors from all over France tested nudge interventions to boost voter turnout.
None worked, and we are possibly not surprised -- but a well-powered null result *is* a result!
Paper:
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
Led by Rustam Romaniuc, 35 coauthors from all over France tested nudge interventions to boost voter turnout.
None worked, and we are possibly not surprised -- but a well-powered null result *is* a result!
Paper:
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
June 15, 2025 at 10:21 AM
A *null* result I'm very proud of!
Led by Rustam Romaniuc, 35 coauthors from all over France tested nudge interventions to boost voter turnout.
None worked, and we are possibly not surprised -- but a well-powered null result *is* a result!
Paper:
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
Led by Rustam Romaniuc, 35 coauthors from all over France tested nudge interventions to boost voter turnout.
None worked, and we are possibly not surprised -- but a well-powered null result *is* a result!
Paper:
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
Excellent statue of Saint Tacano, patron saint of people who manage to get their round in strategically, so they only need to fork out for some fresh pints for the lads and not the girlfriends’ gin and tonics, mojitos, and aperol spritzes
June 15, 2025 at 12:45 PM
Excellent statue of Saint Tacano, patron saint of people who manage to get their round in strategically, so they only need to fork out for some fresh pints for the lads and not the girlfriends’ gin and tonics, mojitos, and aperol spritzes
Inaugural lecture of professor Manon Bloemen at Utrecht University of Applied Sciences - her research focuses on creating inclusive opportunities for physical activity for children with physical disabilities. A fascinating mix of fundamental and applied research, co-creation, and implementation
June 13, 2025 at 1:25 PM
Inaugural lecture of professor Manon Bloemen at Utrecht University of Applied Sciences - her research focuses on creating inclusive opportunities for physical activity for children with physical disabilities. A fascinating mix of fundamental and applied research, co-creation, and implementation
We’ve got vacancies! We are searching a junior scientist on the topic of ethical considerations in lifestyle advice www.radboudumc.nl/vacatures/15... and a data scientist researching natural language processing www.radboudumc.nl/vacatures/15...
For both positions, fluent Dutch is required
For both positions, fluent Dutch is required
Vacature - Junior Onderzoeker Ethiek van Leefstijlgesprekken
We zijn op zoek naar een junior onderzoeker met aantoonbare interesse in ethische en maatschappelijke vragen rondom leefstijl en preventie. ...
www.radboudumc.nl
June 7, 2025 at 10:02 AM
We’ve got vacancies! We are searching a junior scientist on the topic of ethical considerations in lifestyle advice www.radboudumc.nl/vacatures/15... and a data scientist researching natural language processing www.radboudumc.nl/vacatures/15...
For both positions, fluent Dutch is required
For both positions, fluent Dutch is required
New paper out! Usually, smoking cessation interventions only work for people from high socio-economic status groups and not for the rest of the population.
StopAdvisor (UK) was the exception. Our intervention StopCoach took the lessons learned from the Stopadvisor project… (1/4)
StopAdvisor (UK) was the exception. Our intervention StopCoach took the lessons learned from the Stopadvisor project… (1/4)
Effect and acceptability of an mHealth smoking cessation intervention ‘Stopcoach’ combined with smoking cessation counseling for people from multiple levels of socioeconomic position: a multi-methods ...
Introduction Smoking cessation interventions tend to be less effective for people of lower socioeconomic position (SEP) compared to those of higher SEP. Mobile phone-based interventions have been show...
substanceabusepolicy.biomedcentral.com
June 5, 2025 at 7:00 PM
New paper out! Usually, smoking cessation interventions only work for people from high socio-economic status groups and not for the rest of the population.
StopAdvisor (UK) was the exception. Our intervention StopCoach took the lessons learned from the Stopadvisor project… (1/4)
StopAdvisor (UK) was the exception. Our intervention StopCoach took the lessons learned from the Stopadvisor project… (1/4)
Reposted by Sander Hermsen
Internet Roadtrip is my favorite thing on the internet right now—it’s basically Twitch Plays Google Street View. They started in Boston, spent several weeks on a quest to cross the Canadian border, and are now exploring New Brunswick. neal.fun/internet-roa...
Internet Roadtrip
Let's take a streetview roadtrip
neal.fun
May 31, 2025 at 3:27 AM
Internet Roadtrip is my favorite thing on the internet right now—it’s basically Twitch Plays Google Street View. They started in Boston, spent several weeks on a quest to cross the Canadian border, and are now exploring New Brunswick. neal.fun/internet-roa...
Political infighting, no plans, no results, “a terrible year in power.”
Interesting review of the current status of Dutch politics
www.youtube.com/watch?v=gr0F...
Interesting review of the current status of Dutch politics
www.youtube.com/watch?v=gr0F...
What's Gone Wrong for the Dutch Government?
YouTube video by TLDR News EU
www.youtube.com
June 2, 2025 at 11:03 AM
Political infighting, no plans, no results, “a terrible year in power.”
Interesting review of the current status of Dutch politics
www.youtube.com/watch?v=gr0F...
Interesting review of the current status of Dutch politics
www.youtube.com/watch?v=gr0F...
A structured exercise programme after chemotherapy results in significantly longer disease-free survival in people with colon cancer – relevant finding for one of our current projects, in which we are researching strategies for sustained lifestyle change after surgery www.nejm.org/doi/abs/10.1...
Structured Exercise after Adjuvant Chemotherapy for Colon Cancer | NEJM
Preclinical and observational studies suggest that exercise may improve cancer outcomes.
However, definitive level 1 evidence is lacking. In this phase 3, randomized trial
conducted at 55 centers, ...
www.nejm.org
June 2, 2025 at 9:34 AM
A structured exercise programme after chemotherapy results in significantly longer disease-free survival in people with colon cancer – relevant finding for one of our current projects, in which we are researching strategies for sustained lifestyle change after surgery www.nejm.org/doi/abs/10.1...
Reposted by Sander Hermsen
Astérix et Ozempix
May 27, 2025 at 6:32 PM
Astérix et Ozempix
Looking at good text-to-notes apps for iOS and MacOS, any good experiences?
I wanted to try Aqua (withaqua.com) but it seems to only work with google sign-in, which is a definite no
I wanted to try Aqua (withaqua.com) but it seems to only work with google sign-in, which is a definite no
Aqua Voice - Fast Voice Input for Mac and Windows
Fast speech-to-text for Mac and Windows. Responses in as little as 450ms. Create prompts, notes, messages, and docs with just your voice.
withaqua.com
May 15, 2025 at 8:59 AM
Looking at good text-to-notes apps for iOS and MacOS, any good experiences?
I wanted to try Aqua (withaqua.com) but it seems to only work with google sign-in, which is a definite no
I wanted to try Aqua (withaqua.com) but it seems to only work with google sign-in, which is a definite no