Carl F. Falk
Associate Professor | Quantitative Psychologist | Psychometrician
psych.mcgill.ca/perpg/fac/falk/
scholar.google.com/citations?user=9BA_…
- While teaching a course on Item Response Theory this semester, I created a Shiny app for visualizing some polytomous item response models: falkcarl.shinyapps.io/polytomous/ This is an initial draft, so comments/questions/suggestions are welcome! #Psychometrics #RShiny #IRT
- Includes: generalized partial credit model (3 parameterizations), partial credit model, rating scale model, graded response model. Supports toggling of visuals for item information and logistic "building blocks" for some models.
- Reposted by Carl F. FalkNow I'm also looking for a research software engineer to implement a pile of research results to R packages loo, posterior, bayesplot, projpred, priorsense, brms or/and Python packages ArviZ, Bambi and Kulprit. Apply by email with no specific deadline (see contact info at users.aalto.fi/~ave/)
- I'm now also looking for a postdoc with strong Bayesian background and interest in developing Bayesian cross-validation theory, methods and software. Apply by email with no specific deadline (see contact information at users.aalto.fi/~ave/). Others, please share
- FYI. The House of Commons committee where this went down also records the meetings: www.ourcommons.ca/Committees/e...
- If you are a Canadian scientist 🧪 alarmed by the unfair targeting of academics working on research related to EDI in the US ➡️ Turn your attention to our own House of Commons' Standing Committee on Science and Research and consider signing this open letter: docs.google.com/forms/d/e/1F...
- Reposted by Carl F. FalkI'm now also looking for a postdoc with strong Bayesian background and interest in developing Bayesian cross-validation theory, methods and software. Apply by email with no specific deadline (see contact information at users.aalto.fi/~ave/). Others, please share
- I'm looking for a doctoral student with Bayesian background to work on Bayesian workflow and cross-validation (see my publication list users.aalto.fi/~ave/publica... for my recent work) at Aalto University. Apply through the ELLIS PhD program (dl October 31) ellis.eu/news/ellis-p...
- Reposted by Carl F. FalkWhen there is a random way to do something, there is a less random way that is better but requires more thought. In this case, regression models that make no sense don't belong in a multiverse analysis. An inferential regression without a causal justification is like an opinion without reasons.
- Great piece on the absurdity of brute force multiverse analyses. www.pnas.org/doi/10.1073/...
- Anyone else using #shinylive with #rstats having trouble getting nice plotting packages like #ggplot2 or #plotly to work? Curious what work arounds there are. Many thanks! ( #shiny works fine)
- Reposted by Carl F. FalkJoin us as we explore our options, tomorrow….
- Reposted by Carl F. FalkThere is still time to submit a proposal to host IMPS 2028! Visit www.psychometricsociety.org/hosting-oppo... for details. #QuantitativePsychology #Psychometrics
- Reposted by Carl F. FalkI clearly had a lot of thoughts/feelings from reading Terry's blog post, so I wrote one of my own It ended up being a bit of a stream-of-thought post but I think it captures some of my worries benharrap.com/post/2025-10... #statssky #episky #academicsky
- Y'all. I just got ChatGPT to do everything in R for this manuscript. I mean EVERYTHING. And it's all legit and reproducible. I'm shook. How are we mentoring our trainees in statistics now? Who needs to learn coding in R line by line, and who doesn't? scienceforeveryone.science/statistics-i...
- Would sure be funny to embed certain keyword combinations into assignments to mess with cheating students who then copy the questions into an LLM prompt.
- Does anyone else accidentally click on reactions to emails on #Outlook for Office 365? Why can I react to emails? 🎉
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- Reposted by Carl F. FalkWE ARE HIRING! 2 Lecturers in Quantitative Social Science. Want a friendly interdisciplinary department in one of the world's most vibrant cities? This just might be for you. Apply by: 10 Oct www.ucl.ac.uk/work-at-ucl/...
- Reposted by Carl F. FalkExcited to announce that our paper with @pingfanhu.bsky.social and Bogdan Bunea on our #rstats package {surveydown} is now published in @plosone.org The paper compares the benefits of using a code-based approach to survey design, leveraging #quarto and #shiny journals.plos.org/plosone/arti...
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- I'd also be curious to know what people use
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- Considering EBICglasso for network modeling, but have a lot of missing data? A recent paper (accepted at Multivariate Behavioral Research), osf.io/preprints/os... may help. The paper is a bit technical, so a new blog post focuses on software: www.psych.mcgill.ca/perpg/fac/fa... #rstats #quantpsych
- Reposted by Carl F. FalkThis is the definition of a failed social media platform.
- Twitter is dead.....scientifically speaking. www.southernfriedscience.com/twitter-suck...
- Reposted by Carl F. Falk[This post could not be retrieved]
- Reposted by Carl F. FalkMy dept at the University of Auckland (NZ) will be hiring in social psych at the junior level this cycle. Official ad to follow It's a big research-active dept with fun colleagues, plus you can commute to uni on a boat, paired with a pleasant walk thru Albert Park (this pic from heading home today)
- Reposted by Carl F. FalkMark your calendars: IMPS 2026 will be at Yonsei University in Seoul, Republic of Korea, from July 21-24, with short courses on July 20. Updates will be posted to the conference website: www.psychometricsociety.org/imps-2026 #IMPS2026 #Psychometrics #QuantitativePsychology
- Reposted by Carl F. FalkHappy to announce ✨quarto-revealjs-editable✨ This fully supersedes the imagemover extension, as I back then didn't realize the potential. You can now also move, resize, change font size and alignment for text in your slides github.com/EmilHvitfeld... #quarto #slidecrafting
- Reposted by Carl F. FalkNow 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...
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- If you do survey research with Likert-type items and worry about random responders, Michael John Ilagan & I made a Shiny app we think some of you may like. falkcarl.shinyapps.io/BotApp1/ #SurveyResearch #DataQuality #Psychometrics #OnlineSurveys #SurveyBots #RandomResponders #rstats #Shiny
