iiinova — where your digital self keeps evolving

Jingmeng Cui @cuijingmeng.bsky.social · 20/07/2026

Made it to #IMPS2026 registration at Yonsei University, Korea! So excited to see everyone around this week 😄

Jingmeng Cui @cuijingmeng.bsky.social · 20/05/2026

We hope this tutorial will be useful for researchers working with dynamic models in psychology and beyond! You can find the preprint here: osf.io/fhstw_v2

osf.io

OSF

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Jingmeng Cui @cuijingmeng.bsky.social · 20/05/2026

This is an interdisciplinary project with Prof. Anna Lichtwarck-Aschoff & Dr. Fred Hasselman from the psychology side, and Prof. G. Sander van Doorn & Dieta Wagenmakers from GLIFE who contributed key insights into dynamic systems and analytical techniques.

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Jingmeng Cui @cuijingmeng.bsky.social · 20/05/2026

We argue that understanding the key dynamic features of a system is essential for explaining overall model behavior, and also for guiding the development of future models.

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Jingmeng Cui @cuijingmeng.bsky.social · 20/05/2026

Using examples from models of panic disorder and suicidal ideation, we demonstrate how to disentangle complex dynamics across multiple levels.

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Jingmeng Cui @cuijingmeng.bsky.social · 20/05/2026

In this tutorial, we introduce two useful tools, namely phase plane analysis and bifurcation analysis, and show how they can help unpack psychological formal models.

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Jingmeng Cui @cuijingmeng.bsky.social · 20/05/2026

Happy to share that our paper, "Analyzing multivariate formal dynamic models in psychology: A tutorial using graphical tools," has been accepted by Behavior Research Methods 🎉

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Jingmeng Cui @cuijingmeng.bsky.social · 05/02/2026

I'm planning to go to #IMPS2026 in KR this summer! It will be my first time for IMPS and I'm very excited : ) I'd like to share some recent developments on fitlandr (cran.r-project.org/package=fitl...), and I was wondering if anyone's organizing a symposium and would like some nonlinearity? 🙂

cran.r-project.org

fitlandr: Fit Vector Fields and Potential Landscapes from Intensive Longitudinal Data

A toolbox for estimating vector fields from intensive longitudinal data, and construct potential landscapes thereafter. The vector fields can be estimated with two nonparametric methods: the Multivari...

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Jingmeng Cui @cuijingmeng.bsky.social · 22/11/2025

From December, I will join the Research Group of Quantitative Psychology and Individual Differences at KU Leuven as a postdoctoral research associate, supervised by Francis Tuerlinckx and Eva Ceulemans. Looking forward to this new adventure : )

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Jingmeng Cui @cuijingmeng.bsky.social · 22/11/2025

... my paranymphs Zhe Dong and Daan Hulsmans; my photographer Mingmin Zhang; as well as all my family, friends, colleagues, and everyone who joined onsite or online. Your support means a lot to me!

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Jingmeng Cui @cuijingmeng.bsky.social · 22/11/2025

I would like to thank my supervisors Anna Lichtwarck-Aschoff and Fred Hasselman; the chair of the PhD committee Casper Albers @casperalbers.nl; the committee members Ralf Cox, Denny Borsboom, Eva Ceulemans, Laura Bringmann @bringmannlaura.bsky.social, and Nessa Ikani ...

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Jingmeng Cui @cuijingmeng.bsky.social · 22/11/2025

I am very happy and honored to share that I successfully defended my PhD thesis, Advancing the Analytical Tools for Understanding Complexity in Behavioral Science, on November 20th and received my doctorate (cum laude) from the University of Groningen @rug.nl ! 🎉

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Reposted by Jingmeng Cui

Björn Siepe @bsiepe.bsky.social · 22/10/2025

We built the openESM database: ▶️60 openly available experience sampling datasets (16K+ participants, 740K+ obs.) in one place ▶️Harmonized (meta-)data, fully open-source software ▶️Filter & search all data, simply download via R/Python Find out more: 🌐 openesmdata.org 📝 doi.org/10.31234/osf...

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Jingmeng Cui @cuijingmeng.bsky.social · 22/09/2025

I’m very happy to share that my PhD thesis, Advancing the Analytical Tools for Understanding Complexity in Behavioral Science, has been approved by the assessment committee! 🎉 I will publicly defend my thesis on November 20th at 12:45😉 Looking forward to it!

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Jingmeng Cui @cuijingmeng.bsky.social · 25/05/2025

Made it to @saa2025leuven.bsky.social (after 6 hours train from Groningen 🤣) Too late for the registration today but I'm certainly at the right place! See you tomorrow : )

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Reposted by Jingmeng Cui

Eiko Fried @eikofried.bsky.social · 23/04/2025

ICYMI: decision to cut 5 international bachelor psychology programs in NL poses serious threat to psych science nationally & internationally, given how much research conducted here has historically punched above its weight in terms of per-capita output. eiko-fried.com/nl-psycholog...

eiko-fried.com

Cutting international bachelor programs threatens psychological science » Eiko Fried

Dutch universities decided to throw international bachelor programs under the bus to appease the government. This is a terrible idea.

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Jingmeng Cui @cuijingmeng.bsky.social · 27/03/2025

See the preprint for more details! Comments and remarks are welcome😉

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Jingmeng Cui @cuijingmeng.bsky.social · 27/03/2025

We believe these analysis tools can be a very useful complement to the simulation-based approach. We also recommend that future model builders try to start with a more comprehensive understanding of smaller models and build on it afterwards.

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Jingmeng Cui @cuijingmeng.bsky.social · 27/03/2025

Following this workflow, we can see what exact characteristics of the dynamic functions lead to certain overall behavior of the system. We also showed that as long as these core characteristics are preserved, we can change the function forms and produce similar results.

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Jingmeng Cui @cuijingmeng.bsky.social · 27/03/2025

We started with two variables, analyzed their dynamics and the influence of various parameters. After that, we also showed how to add more variables and parameters into the analysis step by step.

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Jingmeng Cui @cuijingmeng.bsky.social · 27/03/2025

(Original models: psycnet.apa.org/doiLanding?d... osf.io/preprints/ps...

psycnet.apa.org

APA PsycNet

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Jingmeng Cui @cuijingmeng.bsky.social · 27/03/2025

We used two formal dynamic models, the panic disorder model by Robinaugh et al. and the suicidal ideation model by Wang (@shirleybwang.bsky.social) et al. to show how to use these tools to understand why a dynamic system evolves in a certain way, resulting in interesting phenomena.

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Jingmeng Cui @cuijingmeng.bsky.social · 27/03/2025

In this tutorial, we introduced an R package with a GUI that can perform phase plane analysis and bifurcation analysis for formal dynamic models in psychology.

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Jingmeng Cui @cuijingmeng.bsky.social · 27/03/2025

Happy to share the last preprint for my PhD project! Analyzing Formal Dynamic Models in Psychology: A Tutorial Using Graphical Tools with Dieta Wagenmakers, G. Sander van Doorn, Fred Hasselman and Anna Lichtwarck-Aschoff doi.org/10.31234/osf...

doi.org

OSF

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Jingmeng Cui @cuijingmeng.bsky.social · 14/03/2025

Haha thanks! This one is mainly written by the awesome Fred though😉

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Reposted by Jingmeng Cui

Merlijn Olthof @molthof.bsky.social · 11/03/2025

I wrote my first blogpost for our Complexity in Behavioural Science research group page. Check it out if you wish! cibs-nl.netlify.app/2025-03-11-b... (it is actually mostly a copy+paste from my dissertation intro, but hey) Thanks to @cuijingmeng.bsky.social for helping with uploading

cibs-nl.netlify.app

How I got into complexity science

Merlijn Olthof

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Jingmeng Cui @cuijingmeng.bsky.social · 06/03/2025

(After a long journey of revisions and resubmissions...) Glad to share that our manuscript, titled Examining the Research Methods of Early Warning Signals in Clinical Psychology through a Theoretical Lens, was accepted by BMC Psychiatry 🥳 Check out the latest version at osf.io/59fu4

osf.io

OSF

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Jingmeng Cui @cuijingmeng.bsky.social · 31/01/2025

Super happy and excited to share that our manuscript (with Fred Hasselman, @molthof.bsky.social , and Anna Lichtwarck Aschoff) has been accepted by the Journal of Psychopathology and Clinical Science! 🥳 Check out the preprint version: osf.io/preprints/ps...

osf.io

OSF

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Jingmeng Cui @cuijingmeng.bsky.social · 20/01/2025

Wow looks like Monet's painting!

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Jingmeng Cui @cuijingmeng.bsky.social · 22/11/2024

For my field here is more lively

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Jingmeng Cui @cuijingmeng.bsky.social · 22/11/2024

My mirror there: @cuijingmeng.bsky.social@bsky.brid.gy

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Jingmeng Cui @cuijingmeng.bsky.social · 22/11/2024

Through this post, I'm testing if @ap.brid.gy can help me to bridge to Mastodon...

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Jingmeng Cui @cuijingmeng.bsky.social · 20/11/2024

So I feel the ultimate solution is to choose variables wisely, limit the number of nodes, and maybe try multilayer methods. Now quadVAR is limited to idiographic data. We hope that in the future we can do a multivariate extension but I'm not sure how difficult that will be.

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Jingmeng Cui @cuijingmeng.bsky.social · 20/11/2024

The core problem is actually at the idiographic part instead of the quadratic part I'd say. Idiographic estimations for large linear networks are already quite unprecise (see github.com/YongZhangYZ/... and doi.org/10.1037/met0...).

github.com

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Jingmeng Cui @cuijingmeng.bsky.social · 20/11/2024

Theoretically, it does ask for more data points, but not super much compared with the linear counterpart as the algorithm picks nonlinear terms in a quite constrained way.

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Jingmeng Cui @cuijingmeng.bsky.social · 20/11/2024

Okay, I can still say more but I realized I've already talked too much... So if you are interested, please take a look at our preprint for details, and feel free to contact me if you have any questions or remarks!

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Jingmeng Cui @cuijingmeng.bsky.social · 20/11/2024

This method is implemented in an R package, quadVAR. It also includes a Shiny app that allows users to change the variable values and see how the network changes accordingly. github.com/Sciurus365/q...

github.com

GitHub - Sciurus365/quadVAR

Contribute to Sciurus365/quadVAR development by creating an account on GitHub.

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