Sign in

Zachary Fisher

@fishingwithzack.bsky.social
965 followers 204 following 3 posts

Assistant Professor in Quantitative Psychology at UNC Chapel Hill.

PostsRepliesMedia
Reposted by Zachary Fisher
Society for the Improvement of Psychological Science (SIPS) @improvingpsych.org · 26/08/2026
Congratulations to the project “openESM,” which received🏆2026 SIPS commendation! openESM is a database of harmonized openly available experience sampling datasets. 🔗Project website: buff.ly/3Q5EwYt 🔗A preprint describing the project: buff.ly/iXcT6ZL
openesmdata.org
openESM: Open Experience Sampling Method Database
<!DOCTYPE html> openESM: Open Experience Sampling Method Database A database of open experience sampling datasets openESM is a database of harmonized openly available experience sampling datasets.…
14019
Reposted by Zachary Fisher
Christopher Crawford @cmcrawford.bsky.social · 30/07/2026
New preprint! I’m excited to share our recent work on discrete-valued time series, where we derive analytic standard errors for a flexible modeling framework. Preprint link and more details below 👇 arxiv.org/abs/2607.02732
arxiv.org
Analytic Standard Errors for Latent Gaussian Discrete-Valued Multivariate Time Series
Unlike their continuous-valued counterparts, there are no universally preferred methodologies for modeling discrete-valued time series. This is especially problematic in fields such as psychology and ...
132
Reposted by Zachary Fisher
Andreas Brandmaier @brandmaier.bsky.social · 30/07/2026
Meet Ωnyx - our open-source GUI for structural equation models #onyx #sem #latentvariables This is the latest SaaS-style promo video by the incredible Jonathan B. #noai Video: www.youtube.com/watch?v=yaql... Download at onyx-sem.com
youtube.com
Onyx - An open-source GUI for Structural Equation Modeling
YouTube video by Prof. Brandmaier (Research Methods)
0156
Reposted by Zachary Fisher
Charles Driver @charlesdriver.bsky.social · 28/07/2026
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
43013
Reposted by Zachary Fisher
Noah Greifer @noahgreifer.bsky.social · 18/02/2026
I'm so excited to announce the first release of my newest #Rstats package, {adrftools}! This package facilitates estimation, visualization, and testing for the causal effect of a continuous (i.e., non-discrete) treatment. 🧵 1/10 #statssky #episky #causalinference
cran.r-project.org
adrftools: Estimating, Visualizing, and Testing Average Dose-Response Functions
Facilitates estimating, visualizing, and testing average dose-response functions (ADRFs) for characterizing the causal effect of a continuous (i.e., non-discrete) treatment or exposure. Includes suppo...
511530
Reposted by Zachary Fisher
Ed Merkle @edgarmerkle.bsky.social · 21/01/2026
Researchers often treat ordinal variables as continuous. What if we could mimic this in an ordinal factor analysis/IRT model? We propose new identification constraints so that the latent variable goes from 1 to (# of ordered categories), with connections to treating ordinal variables as continuous.
doi.org
Identification and Scaling of Latent Variables in Ordinal Factor Analysis | Psychometrika | Cambridge Core
Identification and Scaling of Latent Variables in Ordinal Factor Analysis
195
Reposted by Zachary Fisher
Wes Bonifay @wesbonifay.bsky.social · 14/01/2026
Enroll in my new workshop to realize your dream of learning IRT #quantpsych #psychometrics #psychsky #statssky
centerstat.org
Foundations of Item Response Theory
This workshop from Wes Bonifay focuses on the foundations and application of item response theory, particularly as applied to binary items.
0188
Reposted by Zachary Fisher
Michael Friendly @datavisfriendly.bsky.social · 28/11/2025
#rstats It is with profound sadness I heard that my long-time friend and colleague, John Fox passed away this week. He was the author of {car}, {effects}, {Rcmdr}, ... and numerous influential books. I will miss him greatly. www.john-fox.ca
john-fox.ca
John Fox: Books and Software
1220266
Reposted by Zachary Fisher
Yong Zhang @yongzhangzzz.bsky.social · 27/11/2025
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...
doi.org
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,...
1216
Reposted by Zachary Fisher
Yong Zhang @yongzhangzzz.bsky.social · 27/11/2025
A new publication from my PhD project on model selection for nonstationary time-series data is out, co-authored with an amazing team (Anja Franziska Ernst, @ginettelafit.bsky.social , Ward B. Eiling, @bringmannlaura.bsky.social)! Link: doi.org/10.1111/bmsp...
lnkd.in
LinkedIn
This link will take you to a page that’s not on LinkedIn
1134
Reposted by Zachary Fisher
Zachary Fisher @fishingwithzack.bsky.social · 02/10/2025
We’re hiring in Quantitative Psychology at UNC Chapel Hill! Feel free to reach out if you have any questions about the program and please share widely! unc.peopleadmin.com/postings/307...
unc.peopleadmin.com
Assistant Professor
Primary responsibilities of the position will include conducting high quality research, publishing in peer reviewed journals and broader dissemination, seeking external funding for research, teaching ...
02717
Reposted by Zachary Fisher
Katie Gates @kgates.bsky.social · 03/10/2025
UNC is hiring in Quantitative Psychology! Assistant Professor (tenure-track). Please share widely! Find details here: unc.peopleadmin.com/postings/307...
media.tenor.com
a logo for the carolina tar heels with a ram head
ALT: a logo for the carolina tar heels with a ram head
13224
Reposted by Zachary Fisher
Jonathan J. Park @jonathanpark.bsky.social · 03/10/2025
Wanted to announce that I will be recruiting graduate students this year in Quantitative Psychology here at UC Davis. If you are or know of any undergrads who are interested in dynamical systems and network analytic methods, please send them my way or get in touch!
173
Zachary Fisher @fishingwithzack.bsky.social · 02/10/2025
We’re hiring in Quantitative Psychology at UNC Chapel Hill! Feel free to reach out if you have any questions about the program and please share widely! unc.peopleadmin.com/postings/307...
unc.peopleadmin.com
Assistant Professor
Primary responsibilities of the position will include conducting high quality research, publishing in peer reviewed journals and broader dissemination, seeking external funding for research, teaching ...
02717
Reposted by Zachary Fisher
Jonathan Templin @handle.invalid · 28/08/2025
A new semester is upon us! This time, I’m teaching Structural Equation Modeling. Want to follow along? Here you go: jonathantemplin.github.io/Structural-E... and www.youtube.com/playlist?lis... #StatModeling #SEM
jonathantemplin.github.io
Structural Equation Modeling (Fall 2025; University of Iowa: PSQF 6249) – Structural Equation Modeling Fall 2025 (PSQF 6249)
062
Reposted by Zachary Fisher
W. Joel Schneider @w-joel-schneider.bsky.social · 20/08/2025
Now on CRAN, ggdiagram is a #ggplot2 extension that draws diagrams programmatically in #Rstats. Allows for precise control in how objects, labels, and equations are placed in relation to each other. wjschne.github.io/ggdiagram/ar...
An arrow with a LaTeX equationTrigonometric functions and a unit circleA bivariate change model with structured residualsA hierarchical model of cognitive abilities
1018074
Reposted by Zachary Fisher
Siwei Liu @siweiliu.bsky.social · 12/06/2025
This work was officially accepted for publication today!
031
Reposted by Zachary Fisher
Noah Greifer @noahgreifer.bsky.social · 04/06/2025
Starting to look like I might not be able to work at Harvard anymore due to recent funding cuts. If you know of any open statistical consulting positions that support remote work or are NYC-based, please reach out! 😅
1115296
Reposted by Zachary Fisher
Charles Driver @charlesdriver.bsky.social · 28/05/2025
Postdoc position open in Zurich -- Prof. Martin Tomasik and I have a joint SNF project on interpretable neural network approaches for large scale, complex item / temporal structure, online learning / cognitive development data. Please retweet. tinyurl.com/PostdocGNNSNF
02319
Reposted by Zachary Fisher
Daniel Heck @danielheck.bsky.social · 15/05/2025
🚀 PhD Position in Psychological Methods at @unimarburg.bsky.social 📅 Start: 01.10.2025 | 💼 50% TV-H E13 | ⏳ 3 years Focus on statistical modeling—Bayesian statistics, cognitive modeling, psychometrics. 🔗 Apply now: uni-marburg.de/r5dKTr 🔄 Thanks for sharing!
02727
Reposted by Zachary Fisher
Charles Driver @charlesdriver.bsky.social · 07/05/2025
For anyone who'd like the verbal / visual introduction to my work in quant psych / dynamic systems (or a little of the personal background), I gave my inaugural lecture with UZH Monday night and it's available here: vimeo.com/showcase/826...
vimeo.com
Antrittsvorlesung von Prof. Dr. Charles Driver
Human Behaviour, Cognition and Emotions as Dynamic Systems
2309
Reposted by Zachary Fisher
Dr. Eva Telzer @evatelzer.bsky.social · 30/04/2025
We’re hiring postdocs to join my lab at UNC. If you’re interested in adolescence, brain, and social development, DM me. Our work incorporates fMRI, social media, and longitudinal methods. We study risks and opportunities in adolescence. If you’re at #SRCD2025 and want to meet, please reach out!
16342
Reposted by Zachary Fisher
Vincent Arel-Bundock @vincentab.bsky.social · 10/04/2025
📚😅🎉 Yay!! I just submitted the complete manuscript of my upcoming book to the publisher! Learn to easily and clearly interpret (almost) any stats model w/ R or Python. Simple ideas, consistent workflow, powerful tools, detailed case studies. Read it for free @ marginaleffects.com #RStats #PyData
Model to Meaning: How to interpret statistical models with marginaleffects for R and Python
21596148
Reposted by Zachary Fisher
Dan McNeish @dmcneish.bsky.social · 29/01/2025
This paper on intensive longitudinal reliability led by Sebastian Castro-Alvarez is one of the best I've read in a while -- the review was so thorough, the code was fantastic, and it answered any questions I had about IL reliability. Definitely check it out you work with ILD! osf.io/preprints/ps...
osf.io
OSF
1234
Reposted by Zachary Fisher
Leonie Vogelsmeier @leonievogelsmeier.bsky.social · 06/01/2025
🤓Latent GOLD licenses for academic use are now freely available on the website! www.statisticalinnovations.com/shop/lg-6-1-...
statisticalinnovations.com
LatentGOLD 6.1 Academic New License - Statistical Innovations
LG 5.1 Academic Latent GOLD new license LG Choice Advanced Syntax Latent Class Discrete Choice 3step markov multilevel scale factor 5.1 annual perpetual
192
Reposted by Zachary Fisher
Jonathan J. Park @jonathanpark.bsky.social · 16/12/2024
My first paper as an Assistant Professor at UC Davis is out in the journal SEM! In the paper, we introduce a continuous-time extension to the GIMME model implemented in OpenMx. It uses iterative tests of modification indices to construct group- and person-specific dynamic networks!
tandfonline.com
Unsupervised Model Construction in Continuous-Time
Many of the advancements reconciling individual- and group-level results have occurred in the context of a discrete-time modeling framework. Discrete-time models are intuitive and offer relatively ...
55813
Reposted by Zachary Fisher
Brenden Tervo-Clemmens @tervoclemmensb.bsky.social · 03/12/2024
For the quant methods people in my circle: Tenure-track Assistant Professor specializing in measurement and psychometric issues related to complex data structures.
12819
Reposted by Zachary Fisher
Mitch Prinstein @mitchprinstein.bsky.social · 03/12/2024
Scientists don't have to be in academia to make a huge impact! Check out this new resource for details, salaries, etc on how to pick a career! #psychology #PsychSky #mentalhealth #PsychSciSky #Skychiatry #Neuroskyence #neuroimaging #PsychSciSky #CogPsyc #ClinPsych www.apa.org/science/prog...
apa.org
17026
Reposted by Zachary Fisher
Dan McNeish @dmcneish.bsky.social · 13/11/2024
This article gives a phenomenal overview of the history and evolution of best practices in measurement invariance and differential item functioning -- I can't remember the last time I learned so much reading a single paper, highly recommended! www.tandfonline.com/doi/full/10....
tandfonline.com
A Review of Some of the History of Factorial Invariance and Differential Item Functioning
The concept of factorial invariance has evolved since it originated in the 1930s as a criterion for the usefulness of the multiple factor model; it has become a form of analysis supporting the vali...
86424
Reposted by Zachary Fisher
Omid V. Ebrahimi @omidvebrahimi.bsky.social · 24/10/2024
Starter pack for EMA, ESM, and Intensive Longitudinal Researchers. Feel free to share, follow, and nominate. Suggestions welcome! go.bsky.app/LzqJoUX #ESM #EMA #AA #IntensiveLongitudinalResearch
4610459
Reposted by Zachary Fisher
Christopher Crawford @cmcrawford.bsky.social · 24/09/2024
We have a new preprint! I'm excited to share recent work related to modeling multiple-subject, multivariate time series. We extend the multi-VAR framework to allow for data-driven identification and penalized estimation of subgroup-specific dynamics. arxiv.org/abs/2409.03085
arxiv.org
Penalized Subgrouping of Heterogeneous Time Series
Interest in the study and analysis of dynamic processes in the social, behavioral, and health sciences has burgeoned in recent years due to the increased availability of intensive longitudinal...
182
Reposted by Zachary Fisher
Katie Gates @kgates.bsky.social · 19/09/2024
We're hiring a tenure track Quantitative Psychologist at University of North Carolina - Chapel Hill! We are particularly (but not exclusively) seeking someone with expertise in the measurement and modeling of high-density data structures. unc.peopleadmin.com/postings/288222 Please share widely.
unc.peopleadmin.com
Assistant Professor
Primary responsibilities of the position will include conducting high-quality research, publishing in peer reviewed journals and broader dissemination, seeking external funding for research, teaching ...
02721
Reposted by Zachary Fisher
rogier kievit @rogierk.bsky.social · 19/09/2024
I made an attempt at a bsky psychometrics starter pack with people who work on or largely with psychometric tools! Please reskeet and (selfl!)nominate to help me fill my many and varied blind spots and make this a useful and balanced resource #rstats #psychometrics go.bsky.app/6oGLp7D
4615175
Reposted by Zachary Fisher
Katie Gates @kgates.bsky.social · 29/05/2024
Come join me for a couple of workshops the week of June 10! Focusing on Time Series basics and GIMME. Also check out the other workshops available here - so many good ones!
054
Zachary Fisher @fishingwithzack.bsky.social · 09/01/2024
Interesting new paper from Suryadyuti Baral and Patrick Curran on the stability of DSEM estimates. ajuronline.org/uploads/Volume_20_3/…
ajuronline.org
020
Reposted by Zachary Fisher
Ed Merkle @edgarmerkle.bsky.social · 16/11/2023
Here is a recent document on likelihood computations for multivariate ordinal probit models (ordinal structural equation models), written so that future me remembers how it works. Topics include quadrature, importance sampling, truncated MVN, and information criteria.
ecmerkle.github.io
Ed Merkle - Adventures in ordinal model likelihoods
193
Reposted by Zachary Fisher
Koraly @drkoraly.bsky.social · 15/11/2023
Please submit if you are interested in being part of the special issue! Erica Musser, Sarah Karalunas, and I are happy to answer questions. 👶🧠 #devsci #DevPsy #devpsych #devsky #DevCogNeuro
064
Reposted by Zachary Fisher
Dan McNeish @dmcneish.bsky.social · 26/09/2023
New print w/@MelissaGWolf on dynamic fit index cutoffs. Our software can now derive customized DFI cutoffs for ANY covariance structure model (CFA, SEM, mediation, bifactor, etc.) and supports normal, non-normal, categorical, and missing data (and any estimator) 1/9 psyarxiv.com/4r9fq
92719
Reposted by Zachary Fisher
Tracy Sweet @tracysweet.bsky.social · 26/09/2023
What social media platforms are college students on? Not for leisure but for grad school/jobs/career advice. Trying to tell them about a Quant Methods Info Session. Aside from emailing departments (we're doing that too), how can I reach these folks?
Flyer about a zoom session on quantitative methods. Attend a zoom session to learn about careers and graduate programs in quantitative methods. tinyurl.com/QuantInfoSession2023 to register
041
Zachary Fisher @fishingwithzack.bsky.social · 27/09/2023
My lab is recruiting graduate students for Fall 2024. If you're interested in doing research at the intersection of modeling time-dependent systems, statistical programming, and developmental science come work with me and the amazing scientists at Penn State! quantdev.ssri.psu.edu
0158