Vithor Rosa Franco's Avatar

Vithor Rosa Franco

@vthorrf.bsky.social

Mathematical psychology, psychometrics, and computational methods from SΓ£o Francisco University πŸ‡§πŸ‡· #science #bayes #r

664 Followers  |  379 Following  |  50 Posts  |  Joined: 10.09.2024
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Posts by Vithor Rosa Franco (@vthorrf.bsky.social)

How many versions of the Iowa Gambling Task (IGT) exist? And how much does this affect research using the IGT? More than you might think. 🧡

25.01.2026 11:16 β€” πŸ‘ 96    πŸ” 44    πŸ’¬ 3    πŸ“Œ 6

And we're live, Lecture A1 is online. Introduction to Bayesian workflow, generative models, estimands, estimators, estimates, error checking, beginnings of probability theory and Bayesian updating. www.youtube.com/watch?v=ztbY...

06.01.2026 11:02 β€” πŸ‘ 199    πŸ” 64    πŸ’¬ 2    πŸ“Œ 5
Doing Bayesian Data Analysis in brms and the tidyverse

The 1.3.0 version of my {brms} + {tidyverse} translation of Kruschke's "Doing Bayesian data analysis" is up!

solomon.quarto.pub/dbda2

#rstats

1/8

02.01.2026 17:00 β€” πŸ‘ 139    πŸ” 34    πŸ’¬ 1    πŸ“Œ 0
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Scale of the Universe: Discover the vast ranges of our visible and invisible world. Scale of Universe is an interactive experience to inspire people to learn about the vast ranges of the visible and invisible world.

Really nice, congrats! It remembered me of an old classic: scaleofuniverse.com/en

11.12.2025 19:06 β€” πŸ‘ 0    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Made a site comparing the sizes of living things :)

The great Julius Csotonyi spent 5 months painting over 60 illustrations for the site, no ai used

> neal.fun/size-of-life/

10.12.2025 16:03 β€” πŸ‘ 2641    πŸ” 915    πŸ’¬ 78    πŸ“Œ 87

Truly the stupidest cult. Obsessed with a drug that doesn't work against an infectious disease that they don't even think is real.

05.12.2025 00:41 β€” πŸ‘ 2216    πŸ” 454    πŸ’¬ 36    πŸ“Œ 7

Kind reminder: data driven variable selection (e.g. forward/stepwise/univariable screening) makes things *worse* for most analytical goals

08.10.2025 13:38 β€” πŸ‘ 34    πŸ” 10    πŸ’¬ 2    πŸ“Œ 3

Wow, thanks for the kind words πŸ™πŸ»πŸ˜Š

11.09.2025 18:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

This is actually a simple general purpose sampler for building Bayesian models using R only (like a spiritual successor of LaplacesDemon). I use it for teaching mostly, as students have a hard time learning Stats+R+Stan, so I at least remove one step from the process πŸ™πŸ»

11.09.2025 13:49 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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GitHub - vthorrf/YABS: Yet Another Bayesian Sampler Yet Another Bayesian Sampler. Contribute to vthorrf/YABS development by creating an account on GitHub.

It is definitely worth! I did this with my package: github.com/vthorrf/YABS super useful for my own learning and teaching :)

11.09.2025 13:13 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Experimentology cover: title and curves for distributions.

Experimentology cover: title and curves for distributions.

Experimentology is out today!!! A group of us wrote a free online textbook for experimental methods, available at experimentology.io - the idea was to integrate open science into all aspects of the experimental workflow from planning to design, analysis, and writing.

01.07.2025 18:25 β€” πŸ‘ 534    πŸ” 228    πŸ’¬ 9    πŸ“Œ 15
AIC and combined discrete/continuous models - Biased and Inefficient

AIC comparing discrete to continuous (or mixed discrete/continuous to continous) models? Run away!
notstatschat.rbind.io/2025/07/22/a...

22.07.2025 06:34 β€” πŸ‘ 11    πŸ” 4    πŸ’¬ 0    πŸ“Œ 1

Maybe try "gold" or any of its variations if you are using R

09.07.2025 00:16 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Table 1
Typology of traps, how they can be avoided, and what goes wrong if not avoided. Note that all traps in a sense constitute category errors (Ryle & Tanney, 2009) and the success-to-truth inference (Guest & Martin, 2023) is an important driver in most, if not all, of the traps.

Table 1 Typology of traps, how they can be avoided, and what goes wrong if not avoided. Note that all traps in a sense constitute category errors (Ryle & Tanney, 2009) and the success-to-truth inference (Guest & Martin, 2023) is an important driver in most, if not all, of the traps.

NEW paper! πŸ’­πŸ–₯️

β€œCombining Psychology with Artificial Intelligence: What could possibly go wrong?”

β€” Brief review paper by @olivia.science & myself, highlighting traps to avoid when combining Psych with AI, and why this is so important. Check out our proposed way forward! πŸŒŸπŸ’‘

osf.io/preprints/ps...

14.05.2025 21:23 β€” πŸ‘ 348    πŸ” 105    πŸ’¬ 15    πŸ“Œ 25

The case for #SlowScience has never been stronger.

We must prioritise thoughtful, creative, and collaborative research that cannot be mimicked by these plagiarism machines.

14.05.2025 08:50 β€” πŸ‘ 26    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
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#statstab #335 Bayesian New Statistics

Thoughts: An influential paper with a great overview of different approaches to research.

#bayesian #nhst #nhbt #estimation #testing #frequentist
link.springer.com/content/pdf/...

02.05.2025 18:20 β€” πŸ‘ 23    πŸ” 2    πŸ’¬ 1    πŸ“Œ 1

Nice! I am happy to help πŸ™πŸ»

03.04.2025 19:58 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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No problem :) Could you please try running the attached example? I am using Windows and it worked just well.

03.04.2025 01:57 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Sorry! I forgot to come back here yesterday. The error means that the workers (i.e., each core) can't properly access the function. I know this may be too basic, but did you remember to load the package in each worker?

02.04.2025 11:03 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Are you using your own non-native language function or is it a function from some package?

01.04.2025 11:00 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Didn't know you are Swedish

26.03.2025 10:32 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Genuine question to psychologists and other social scientists here: Have you been taught/Are you teaching that when designing a study/survey you should not ask about demographic stuff first? If so, what was the explanation given to you/you give?

25.03.2025 16:37 β€” πŸ‘ 29    πŸ” 12    πŸ’¬ 39    πŸ“Œ 5

If one wanted to hire a professional #rstats #rshiny developer to work work with qualitative/text data in particular (so many involve a dashboard for search/semantic/sentiment analyses), do you have any recommendations of individuals or companies? (please repost)

13.03.2025 09:42 β€” πŸ‘ 19    πŸ” 20    πŸ’¬ 11    πŸ“Œ 2
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Study: Psychological booster shots targeting memory increase long-term resistance against misinformation

"...text-based & video-based inoculation interventions can remain effective for one month..."

www.nature.com/articles/s41... by @profsanderlinden.bsky.social @lewan.bsky.social et al.

12.03.2025 14:17 β€” πŸ‘ 82    πŸ” 23    πŸ’¬ 4    πŸ“Œ 1
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How can we reduce conceptual clutter in the psychological sciences?

@ruimata.bsky.social and I propose a solution based on a fine-tuned πŸ€– LLM (bit.ly/mpnet-pers) and test it for 🎭 personality psychology.

The paper is finally out in @natrevpsych.bsky.social: go.nature.com/4bEaaja

11.03.2025 10:57 β€” πŸ‘ 52    πŸ” 29    πŸ’¬ 1    πŸ“Œ 5

Are you doing EMA research and wonder how to go about it? In recent work we've adressed some open questions and challenges, here is a brief summary of papers and materials.

🧡 #PsychSciSky πŸ§ͺ #StatsSky

12.03.2025 09:58 β€” πŸ‘ 150    πŸ” 73    πŸ’¬ 5    πŸ“Œ 5
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Individual, intergroup and nation-level influences on belief in conspiracy theories - Nature Reviews Psychology Conspiracy theories have the potential to undermine governments, promote racism, ignite extremism and threaten public health efforts. In this Review, Hornsey et al. synthesize the literature on factor...

Individual, intergroup and nation-level influences on belief in conspiracy theories

Review by Matthew J. Hornsey, Kinga Bierwiaczonek, Kai Sassenberg & Karen M. Douglas

Web: go.nature.com/3VoNjiv
PDF: rdcu.be/d9Lay

13.02.2025 17:18 β€” πŸ‘ 28    πŸ” 13    πŸ’¬ 0    πŸ“Œ 1

Are you familiar with Neural Amp Modeler? It is insanely good

13.02.2025 10:27 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Do you struggle with procrastination
YouTube video by Fuschia Sirois Do you struggle with procrastination

My efforts to raise awareness about the TEMPO toolkit has turned into a new creative obsession. Who would have thought creating info-animations would be so much fun!
Here's one on why compassion, NOT criticism, is the answer for those who struggle with #procrastination. Share!
youtu.be/Q8sEN4p5St8

31.01.2025 22:14 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

All the #NatureReviews journals and Nature Protocols are now on Bluesky, lots of Editors added to the starter pack too if you want to follow us πŸ§ͺ

go.bsky.app/KcxvQLp

27.01.2025 19:13 β€” πŸ‘ 130    πŸ” 53    πŸ’¬ 4    πŸ“Œ 0