merijn 😺📱📈
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merijnmestdagh.bsky.social
merijn 😺📱📈
@merijnmestdagh.bsky.social
Psychology | Statistics | Postdoc | Co-founder and developer #EMA #EMI #ESM platform http://m-Path.io
Very cool study by Laura Dewitte on how the #ESM / #EMA methodology can even be used in a population with dementia. Results:

✅ 0 dropouts
✅ 80% response rate
✅ low reported burden
✅ positive participation experiences
✅ substantial within- and between-person variability
🤔 Can people with dementia participate in intensive experience sampling studies via smartphone?

🧐Yes, they can! Even with high-frequency sampling schemes (8 times / day)!

Work from @lauradewitte.bsky.social in npj Dementia: doi.org/10.1038/s444...
September 3, 2025 at 7:20 AM
Reposted by merijn 😺📱📈
🤔 Can people with dementia participate in intensive experience sampling studies via smartphone?

🧐Yes, they can! Even with high-frequency sampling schemes (8 times / day)!

Work from @lauradewitte.bsky.social in npj Dementia: doi.org/10.1038/s444...
September 3, 2025 at 6:40 AM
Reposted by merijn 😺📱📈
📱 Want to know when to schedule your #EMA / #ESM beeps for the highest completion rates?

⏰ Timing matters: some moments during the day and week are more receptive than others.

See: link.springer.com/article/10.3...
June 20, 2025 at 2:44 PM
Reposted by merijn 😺📱📈
Cool work by Vanhasbroeck et al. (2024) relevant for #EMA / #ESM research:

🔁 Moderate to good retest consistency in fast-paced affective measures

📏 Whether it is VAS, Likert or 2D affect grid: Scale type doesn't seem to affect reliability!

🔗: link.springer.com/article/10.3...
Chasing consistency: On the measurement error in self-reported affect in experiments - Behavior Research Methods
How feelings change over time is a central topic in emotion research. To study these affective fluctuations, researchers often ask participants to repeatedly indicate how they feel on a self-report ra...
link.springer.com
June 23, 2025 at 5:07 PM
Reposted by merijn 😺📱📈
📢 New paper alert!

Invited review led by Francis Tuerlinckx for BJMSP on the latest developments in #EMA / #ESM research 📱🔍

doi-org.kuleuven.e-bronnen.be/10.1111/bmsp...

A (very) short 🧵 below:

@saa2025leuven.bsky.social
doi-org.kuleuven.e-bronnen.be
June 10, 2025 at 11:21 AM
Ultimate respect for dj Alter Egon @dejonckheeregon.bsky.social !
What an insane crowd at the #SAA2025 m-Party (also sublime dance moves)! 💃🪩🕺🏼

#EMA researchers know how to party! 👊🙏
May 28, 2025 at 2:07 PM
Reposted by merijn 😺📱📈
What an insane crowd at the #SAA2025 m-Party (also sublime dance moves)! 💃🪩🕺🏼

#EMA researchers know how to party! 👊🙏
May 27, 2025 at 11:53 PM
Reposted by merijn 😺📱📈
Really happy that @leonieschorrlepp.bsky.social presented the results of our mixed-methods study uncovering response processes in ESM studies 📱.

Take-away: people are very inconsistent in how they come up with their answers. Talking to participants in key! 🔐 #SAA2025
May 27, 2025 at 1:02 PM
Very exciting to see the work from @katiehoemann.bsky.social at #SAA2025! Participants were able to voice record a description of events. Katie clustered these over many different topics. 2 fun ones:
- Complaints about rain (study was in Belgium 😅)
- Complaints about the study itself (ESM...)
May 27, 2025 at 11:52 AM
Reposted by merijn 😺📱📈
#SAA2025: Laura Sels talks about daily emotional suppression and differences between males and females.
May 26, 2025 at 2:42 PM
Reposted by merijn 😺📱📈
I had a great time discussing my work yesterday at #SAA2025! If you are interested in building sets of variables, then check out the R package @aaronjfisher.bsky.social and I made:

github.com/nicolasleena...
GitHub - nicolasleenaerts/mitools: Pairing Variables Using Mutual Information
Pairing Variables Using Mutual Information. Contribute to nicolasleenaerts/mitools development by creating an account on GitHub.
github.com
May 27, 2025 at 7:56 AM
@leonievogelsmeier.bsky.social showing the true complexity of science!
I very much appreciate @leonievogelsmeier.bsky.social's openness about challenges in studying markers for careless responding and how to address them live while collecting data - among them lots of issues in dealing with participants' digital footprints #SAA2025
May 26, 2025 at 3:10 PM
@rayyantutunji.bsky.social showing at #SAA2025 that wearable data (EPA) is not enough to predict mental well-being (R2 = 0.01). My bet is more on timing (triggering) surveys compared to leaving out surveys.

Impressed by the commitment to correct validation (not even touching test set until later)!
May 26, 2025 at 11:09 AM
Reposted by merijn 😺📱📈
The things you see when you're at @saa2025leuven.bsky.social! If you're looking for ZI 02.21 and you find yourself in a mini museum, you're heading in the right direction! #SAA2025
May 26, 2025 at 9:44 AM
Cool #SAA2025 talk from Niels van Hasbrouck about how an extreme response style can have a severe effect on affect dynamics.

Should we push everyone to have the same response style by only allowing discrete answers?
May 26, 2025 at 9:42 AM
Triggering questionnaires at the right time will become increasingly important in research!

I am looking forward to see what researchers will build with these features 👩‍🔬 🧪 📑 !
🚨 New m-Path feature alert!

Trigger #ESM / #EMA prompts based on proximity to a Bluetooth beacon 🔵📱

Perfect for dyadic studies 👥 — deliver mobile surveys or interventions real-time, when participants are near their partner, friend or family member.

#passivesensing @saa2025leuven.bsky.social
May 22, 2025 at 9:51 AM
Very happy with this new feature that automatically creates individualized invitation pages for all your participants! 📫🔥🔓
Want to enroll participants to your #EMA / #ESM study privately 🔒, effortlessly 💨, and in bulk 📦?

m-Path now allows sending participants a link to their personal onboarding page 📲!

Also possible to include a study logo and tailored description!

Check it out: manual.m-path.io/knowledge-ba...
May 14, 2025 at 1:22 PM
Small new #EMI (ecological momentary intervention) feature that makes it very easy to create adaptive module screens or psycho education interventions. Used for:
- adaptive presentation of exercises
- Only show relevant modules for a participant (modules that actually interest the participant)
April 18, 2025 at 11:52 AM
Reposted by merijn 😺📱📈
For those who are interested ESM feedback, happy to announce that a new paper is out, in which we combine qualitative and quantitative feedback! Innovations include clock graphs, stacked graphs, and word clouds with sentences. www.sciencedirect.com/science/arti...
Developing a qualitative and quantitative ambulatory assessment-based feedback system within cognitive behavioural interventions for people with persecutory beliefs
Although the application of self-monitoring (ambulatory assessment) and visual feedback in psychological interventions has yielded promising results, …
www.sciencedirect.com
April 6, 2025 at 2:41 PM
Reposted by merijn 😺📱📈
m-Path goes to Amsterdam! 🇳🇱

Science and Tech-companies meet each other @ the Nemo Science Museum to exchange knowledge and innovative solutions to measure and reduce stress in daily life!

🧑‍🔬📈📲
March 27, 2025 at 1:24 PM
Using fixed (e.g. stress>70) thresholds when triggering interventions or questionnaires is not optimal. For example, some participants never reach a stress level of 70, some are always above 70.

This pre-print shows that triggering with personalized thresholds, solving this problem, is possible!
@timonelmer.bsky.social @eveliensnippe.bsky.social and colleagues explored the potential of different triggering strategies in a #JITAI study on social support in depressed individuals.

Pre-print: osf.io/preprints/ps...
March 25, 2025 at 8:50 AM
Very cool paper on an ambulatory assessment based blended care implementation! #blended #ESM #EMA
[1/3] Cool new work by @bringmannlaura.bsky.social and colleagues on digital feedback tools in psychotherapy with m-Path.io! 📊

Link below 👇
www.sciencedirect.com/science/arti...
March 24, 2025 at 8:20 AM
Reposted by merijn 😺📱📈
Interested in ESM but don’t know where to start? On Thursday May 22 we organize a workshop on how to design and analyze your ESM study! Register here: forms.office.com/e/2jUtLe2t2R. With @domimaciejewski.bsky.social, @dejonckheeregon.bsky.social, Marlies Houben @tilburg-university.bsky.social
March 19, 2025 at 9:58 AM
Reposted by merijn 😺📱📈
New work in @clinpsychrev: "EMA in psychotherapy research"

EMA:
✅ most used in clin *research*
✅ often to predict symptom changes
✅ rarely implemented to impact therapeutic processes
✅ research needed on actual EMA benefits in *practice*

www.sciencedirect.com/science/arti...
March 4, 2025 at 2:45 PM
New website!
📣Check out our new m-path.io/landing/ website! After months of programming, editing and finetuning we finally (dared to) push the launch button!
👇
🔴

(proof in the picture below)

Very excited to hear your thoughts!
February 26, 2025 at 3:20 PM