ctsem has a GUI now -- visual, SEM-like spec, fit & diagnostics for hierarchical discrete or continuous time state space models (i.e., DSEM's). github.com/cdriveraus/c... State-space (process + measurement) and individual difference views shown. Ideas welcome! Workshop @saa2026.bsky.social

To celebrate the openESM paper release, I wrote a brief blog post summarizing recent developments: openesmdata.org/blog/2026-07... We: 💠added more data 💠provided descriptive visualizations for each item 💠created a semantic similarity mapping for items, making it easier to find related items

Daniel Heck@danielheck.bsky.social · 3w ago

Our article introducing the #openESM database for experience samling data, led by @bsiepe.bsky.social, has now been published 🎉 Paper: link.springer.com/article/10.3... openESM interactive website: openesmdata.org GitHub repository: github.com/openesm-proj...

1/2 New #openaccess Psych Methods paper: "Identifying Careless Responding in Ecological Momentary Assessment: Inconsistent Signals From Different Detection Methods in the WARN-D Data" led by @leonievogelsmeier.bsky.social. psycnet.apa.org/fulltext/202...

WE ARE HIRING! Come work with us (me + @malte.the100.ci) on developing and validating RegCheck. PhD or postdoc applications welcome. Folk with backgrounds in meta-science, psychology, (pre)clinical trials, and/or economics are especially invited to apply. jobs.unibe.ch/job-vacancie...

PhD Student/ Postdoc Position in Meta-Science - Universität Bern

Universität Bern is looking for PhD Student/ Postdoc Position in Meta-Science

jobs.unibe.ch

Last week, I defended my PhD! The past 3.5 years were the most intense, joyful, and unpredictable years of my life. I'm grateful for learning from many inspiring researchers and making great friends along the way. Thanks to everyone who was there for me and made this time truly special!

1/ We have a PhD position open on 'Mental Disorders as Harmful Stable States'. If you know students interested in the intersection of mental health & statistical modeling (EMA & time series), please encourage them to apply. www.academictransfer.com/nl/jobs/3621...

PhD Position on "Mental disorders as harmful stable states"

PhD Position on “Mental disorders as harmful stable states” The departments Clinical Psychology and Methodology & Statistics, at the Institute of Psychology, Faculty of Social Sciences, Leiden Univers...

academictransfer.com

In addition to a hiring PhD in ~October & hopefully some PhDs and postdocs ~February, if anyone would like to work with me as part of eg a Marie-Curie or something similar, please do get in touch. Topics include depression, classification, measurement, systems, time-series, & theory building.

Postdoc position @unimarburg.bsky.social in the project: "Bridging the Gap Between Verbal Psychological Theories & Formal Statistical Modeling with Large Language Models" (funded by @volkswagenstiftung.de) 📅Start: 01.10.2026 |⏳3 years 🔗 Job posting: uni-marburg.de/78NrWT Thanks for sharing!

Check out the great program of the *1st Interdisciplinary Symposium on Meta Science for Methods Research* organized 31 August and 1 September in Zürich! Ton of cool speakers and meta-methodological reseach! crsuzh.pages.uzh.ch/msmr/program/ (registration still open)

Dr. Mihai Constantin, Prof. Dr. Jeroen Vermunt, and I are looking for a motivated PhD candidate for the project: "Dynamic Mixture Modeling for Intensive Longitudinal Data". tiu.nu/23934 Please share this vacancy with anyone who might be interested!

Using (multilevel) VAR models? Ever checked how well they actually fit your data? @jmbh.bsky.social & I created VARcheck, an R package for visual model checking for VAR models. Blogpost with workflow: bsiepe.github.io/blog/2026-05... 📝Paper: doi.org/10.31234/osf... 💻Docs: bsiepe.github.io/VARcheck/

We had the privilege of hosting @bsiepe.bsky.social for this talk on the openESM database! 🎉✨ If you couldn't make it to the talk, you can now view the recording on YouTube: www.youtube.com/watch?v=6HPn... #ESM #openscience #rstats #intensivelongitudinaldata

Introducing openESM: A database of openly available experience sampling datasets by Björn Siepe

YouTube video by Psych #rstats Club

youtube.com

Psych #rstats Club @psychrstats.bsky.social · 5mo ago

🔊 ❗We are excited to be collaborating with Björn Siepe @bsiepe.bsky.social for a new free upcoming talk on openESM! The talk will be “Introducing openESM: A Database of Openly Available Experience Sampling Datasets.” Check out the flyer for more details. ✨Register now: forms.gle/2W2Mhh5V2vvY...

Congrats! 9 psychological researchers joined the 3rd cohort of APS Editorial Fellows #AcademicSky @bsiepe.bsky.social, @laura-j-botzet.bsky.social, @corinnecarlton.bsky.social, @hghwang.bsky.social, @eikekofi.bsky.social, @mjbalezina.bsky.social, Peejay Bengwasan, Jin Li, Christopher Osterhaus

2026 Editorial Fellows Bring Diverse and Global Perspectives

APS welcomes nine psychological researchers to the third cohort of APS Editorial Fellows.

psychologicalscience.org

A new paper for my PhD has been published! In psychology, the default for studying the ubiquitous explanation ‘it-depends’ is the use of an interaction/moderator. This default creates tension between theory and model, yielding false positives and negatives. doi.org/10.1007/s421...

Anything Goes: Statistical Interactions Without Substantive Theory - Computational Brain & Behavior

Conditional effects, or interaction effects, do not imply multiplicative effects. However, product terms are the default method for modeling such conditional effects in psychological research. As a result, theoretically plausible conditional effects may go undetected when the functional form is misspecified. Our study had two objectives: (1) evaluate the extent to which non-linear phenomena can be identified as spurious multiplicative (i.e., standard) interaction terms in linear models, (2) assess how well linear models capture stepwise conditional effects. In Study 1, we examined spurious interactions from non-linear main effects. We found that traditional interaction terms were associated with increased Type-I error rates and small effect sizes. Importantly, this was also the case when the predictors were uncorrelated, indicating a mechanism beyond collinearity. Additionally, we found that, if captured, the spurious interaction effects did reduce prediction error on the population level. In Study 2, we simulated genuine conditional effects, following a stepwise pattern. When effects were monotonic, product terms performed adequately, however if the conditional effect is non-monotonic a traditional interaction term in a linear model does not sufficiently capture such an effect. We conclude that relying solely on traditional interaction terms in linear models can be misleading and the failure to replicate interaction effects may partly reflect a specification crisis: Researchers default to one functional form (multiplication) while the underlying theory may dictate a different form, creating a systematic mismatch between theory and model. To validly investigate conditional effects, researchers should specify and justify the expected functional form a priori.

doi.org

Hey friends, my new paper was just published in JAMA Psychiatry. I draw on biological species classification to sketch a new framework for psychiatric nosology. Brief summary follows below. Full text link: jamanetwork.com/journals/jam... 🧪 #PsychSciSky #MentalHealth

Mental Disorders as Homeostatic Property Clusters

This narrative review explores the idea of understanding mental disorders according to homeostatic property clusters rather than through typical classification systems.

jamanetwork.com

Save the date: 1st Interdisciplinary Symposium on Meta Science for Methods Research (MSMR 2026) How can we improve research on research methods? 📍 Zurich, Switzerland (+ livestream for attendance) 📅 August 31 – September 1, 2026 🔗 crsuzh.pages.uzh.ch/msmr/

🔊 ❗We are excited to be collaborating with Björn Siepe @bsiepe.bsky.social for a new free upcoming talk on openESM! The talk will be “Introducing openESM: A Database of Openly Available Experience Sampling Datasets.” Check out the flyer for more details. ✨Register now: forms.gle/2W2Mhh5V2vvY...

Does it make sense to preregister simulation studies? This question has sparked a lot of debate. ▶️We* work through the why, when, and how ▶️We discuss different phases of methodological research to clarify where preregistration might (or might not) add value 📝 Preprint: doi.org/10.31234/osf...

Excited to share a new call for papers for a special issue in Psychometrika focused on Data Intensive Methods in Psychometrics that I'll be guest editing with @kyliegorney.bsky.social, @jmbh.bsky.social, @leonievogelsmeier.bsky.social, and Ben Domingue: www.psychometricsociety.org/post/call-sp...

Call for Papers: Psychometrika Special Issue - Psychometric Society

Data Intensive Methods in Psychometrics

psychometricsociety.org

After 5 years of data collection, our WARN-D machine learning competition to forecast depression onset is now LIVE! We hope many of you will participate—we have incredibly rich data. If you share a single thing of my lab this year, please make it this competition. eiko-fried.com/warn-d-machi...

WARN-D machine learning competition is live » Eiko Fried

If you share one single thing of our team in 2026—on social media or per email with your colleagues—please let it be this machine learning competition. It was half a decade of work to get here, especi...

eiko-fried.com

🚨Model Checking for Vector Autoregressive Models 🚨 In a new preprint, @joranjongerling.bsky.social, @bsiepe.bsky.social, @sachaepskamp.bsky.social, Lourens Waldorp and I provide a tutorial on model checking for Vector Autoregressive (VAR) models: osf.io/preprints/ps...

From my master’s thesis to my first PhD project — excited to share that this work (together with @jordanrvl.bsky.social, @ginettelafit.bsky.social, Anja Franziska Ernst, Josip Razum, Eva Ceulemans, and @bringmannlaura.bsky.social) is now published in AMPPS! Link: doi.org/10.1177/2515...

Meeting the Bare Minimum: Quality Assessment of Idiographic Temporal Networks Using Power Analysis and Predictive-Accuracy Analysis - Yong Zhang, Jordan Revol, Ginette Lafit, Anja F. Ernst, Josip Razu...

The network theory of psychopathology inspired clinicians and researchers to use idiographic networks to study how symptoms of an individual interact over time,...

doi.org

Simulation studies have a conflict of interest problem. The same team: - develops a new method - designs a simulation study to evaluate it However, the new method has to show good performance to get published. We propose living synthetic benchmarks to address the issue (doi.org/10.48550/arX...).

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...

🚨 New preprint: We compared 13 methods for detecting momentary careless responding in the WARN-D data (206k+ obs.). Tutorials guide you through each method. The takeaway? Diverging results, inherent subjectivity (to varying degrees), and a clear need for further validation. osf.io/preprints/ps...

Two new preprints on multilevel HMMs! Time series data is now pervasive in psychology and new methods are needed to model the dynamics in such data. Hidden Markov Models (HHMs) are powerful models for dynamics in which a system is switching between a number of discrete states.

Help us show there is support for offering registered reports at one of Psychology's leading method's journal! chng.it/TwwnVBScVb

Adopt Registered Reports at Psychological Methods

Can you spare a minute to help this campaign?

chng.it

Fair coins tend to land on the same side they started: evidence from 350,757 flips. That's the title of our paper summarizing ~650 hours of coin-tossing experimentation just published in the Journal of the American Statistical Association. doi.org/10.1080/0162...

New paper by @bsiepe.bsky.social & WARN-D team out now in JoPACS, on the (lack of) relation between EMA selfreport and Garmin passive data. Guardian @theguardian.com coverage: www.theguardian.com/technology/2... Paper: psycnet.apa.org/doiLanding?d... 🧪 #PsychSciSky #StatsSky #EpiSky

Smartwatches offer little insight into stress levels, researchers find

Academic study suggests devices cannot differentiate between someone being overworked and being excited

theguardian.com

How Accurate & Consistent are Self-Report responses via Visual Analogue Scales (VAS) in Ecological Momentary Assessment & Digital Studies? Examined in a massive EMA study (N = 3,761), our new #OpenAccess piece on this is just out: online.ucpress.edu/collabra/art... #PsychSciSky #AcademicSky 🧵: