merijn πŸ˜ΊπŸ“±πŸ“ˆ's Avatar

merijn πŸ˜ΊπŸ“±πŸ“ˆ

@merijnmestdagh

Psychology | Statistics | Postdoc | Co-founder and developer #EMA #EMI #ESM platform http://m-Path.io

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10.11.2023
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Latest posts by merijn πŸ˜ΊπŸ“±πŸ“ˆ @merijnmestdagh

Response rates is something EMA all researchers worry about. Insightful blog about how to predict and improve your response rates!

11.03.2026 12:47 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Super easy way to personalize sliders with a tangible effect!

26.02.2026 11:03 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

How to make good quality EMA items? A small investment to read, a big return by higher quality data!

14.01.2026 14:23 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Very cool study by Laura Dewitte on how the #ESM / #EMA methodology can even be used in a population with dementia. Results:

βœ… 0 dropouts
βœ… 80% response rate
βœ… low reported burden
βœ… positive participation experiences
βœ… substantial within- and between-person variability

03.09.2025 07:20 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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πŸ€” 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...

03.09.2025 06:40 πŸ‘ 5 πŸ” 5 πŸ’¬ 1 πŸ“Œ 2
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πŸ“± 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...

20.06.2025 14:44 πŸ‘ 38 πŸ” 15 πŸ’¬ 2 πŸ“Œ 1
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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...

Cool work by Vanhasbroeck et al. (2024) relevant for #EMA / #ESM research:

πŸ” Moderate to good retest consistency in fast-paced affective measures

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

πŸ”—: link.springer.com/article/10.3...

23.06.2025 17:07 πŸ‘ 3 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

πŸ“’ New paper alert!

Invited review led by Francis Tuerlinckx for BJMSP on the latest developments in #EMA / #ESM research πŸ“±πŸ”

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

A (very) short 🧡 below:

@saa2025leuven.bsky.social

10.06.2025 11:21 πŸ‘ 14 πŸ” 7 πŸ’¬ 1 πŸ“Œ 0

Ultimate respect for dj Alter Egon @dejonckheeregon.bsky.social !

28.05.2025 14:07 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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What an insane crowd at the #SAA2025 m-Party (also sublime dance moves)! πŸ’ƒπŸͺ©πŸ•ΊπŸΌ

#EMA researchers know how to party! πŸ‘ŠπŸ™

27.05.2025 23:53 πŸ‘ 21 πŸ” 5 πŸ’¬ 0 πŸ“Œ 3

Very cool! Still processing the talk :D

27.05.2025 13:23 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Really happy that @leonieschorrlepp.bsky.social presented the results of our mixed-methods study uncovering response processes in ESM studies πŸ“±.

Take-away: people are very inconsistent in how they come up with their answers. Talking to participants in key! πŸ” #SAA2025

27.05.2025 13:02 πŸ‘ 30 πŸ” 6 πŸ’¬ 2 πŸ“Œ 0
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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 πŸ˜…)
- Complaints about the study itself (ESM...)

27.05.2025 11:52 πŸ‘ 14 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0
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#SAA2025: Laura Sels talks about daily emotional suppression and differences between males and females.

26.05.2025 14:42 πŸ‘ 4 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0

Hopefully you have enough energy to make it to Egons dj set ;-)

27.05.2025 11:19 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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GitHub - nicolasleenaerts/mitools: Pairing Variables Using Mutual Information Pairing Variables Using Mutual Information. Contribute to nicolasleenaerts/mitools development by creating an account on GitHub.

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...

27.05.2025 07:56 πŸ‘ 8 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0

@leonievogelsmeier.bsky.social showing the true complexity of science!

26.05.2025 15:10 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Agree!

26.05.2025 11:23 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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@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)!

26.05.2025 11:08 πŸ‘ 14 πŸ” 7 πŸ’¬ 0 πŸ“Œ 0
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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

26.05.2025 09:44 πŸ‘ 8 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1
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Affect dynamics or response bias? The relationship between extreme response style and affect dynamics in a controlled experiment - PubMed Intensive longitudinal data (ILD) have become a popular data format to capture people's momentary affect in everyday life. Besides describing persons' average affect over time, ILD are also often used...

More: pubmed.ncbi.nlm.nih.gov/40080550/#:~....

26.05.2025 09:43 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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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?

26.05.2025 09:42 πŸ‘ 10 πŸ” 2 πŸ’¬ 2 πŸ“Œ 0

Welcome to Leuven :D!

26.05.2025 09:25 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

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 πŸ‘©β€πŸ”¬ πŸ§ͺ πŸ“‘ !

22.05.2025 09:52 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Very happy with this new feature that automatically creates individualized invitation pages for all your participants! πŸ“«πŸ”₯πŸ”“

14.05.2025 13:24 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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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)

18.04.2025 11:53 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1
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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, …

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...

06.04.2025 14:41 πŸ‘ 29 πŸ” 11 πŸ’¬ 2 πŸ“Œ 1
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m-Path goes to Amsterdam! πŸ‡³πŸ‡±

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!

πŸ§‘β€πŸ”¬πŸ“ˆπŸ“²

27.03.2025 13:24 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

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!

25.03.2025 08:50 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Very cool paper on an ambulatory assessment based blended care implementation! #blended #ESM #EMA

24.03.2025 08:20 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0