Notes on psychology, statistics, and R, sometimes

  • Against publishing (2025-10-14)
    Preprints---scholarly manuscripts not yet captured by the publication industry---are widely read and circulated, yet the "[intellectual perestroika](https://eprints.soton.ac.uk/251894/1/harnad90.skywriting.html)" they could facilitate hasn't been uniformly realized because… • opinion, research • 507 words
  • My PsyArXiv coauthorship network (2025-09-24)
    Using PsyArXiv preprint metadata (provided in the [psyarxivr](https://github.com/mvuorre/psyarxivr) package) to create a single author's coauthorship network in R. • r, research • 1,235 words
  • How I work on computationally reproducible academic projects (2025-08-22)
    Stubborn opinions, lessons learned, and other esoterica on the minutiae of day-to-day workflows in academic psychology. • research, workflow • 3,121 words
  • PDF-direct (2025-07-03)
    PDF-direct is a Firefox extension that skips academic journals' "enhanced" PDF viewers to direct PDF downloads. • communication, workflow • 305 words
  • How to add citations from Zotero to Quarto documents (2025-06-06)
    The vscode-zotero extension allows quickly inserting citation keys from Zotero to your Quarto documents, and updating the associated .bib file with the citation's biblatex entry. Here's how to install and use it. • communication, workflow • 427 words
  • Bayesian multilevel mediation with brms (2025-05-02)
    This post shows how to fit a three-variable multilevel mediation model with brms. • r, statistics • 1,286 words
  • My peer review principles & practices (2025-02-03)
    Commitment to transparent, open, and credible peer review • communication, research • 977 words
  • Preprints: A Quarto extension and website (2024-06-20)
    Preprints are pretty, pretty good • communication, research, workflow • 1,207 words
  • A quantitative methods syllabus (2024-01-19)
    Recommended readings in quantitative methods • research, statistics • 1,103 words
  • Yet another data request email (2023-03-24)
    To what extent does infant screen time predict later psychological outcomes? • research • 593 words
  • Latent mean centering with brms (2023-01-01)
    Researchers studying longitudinal data routinely center their predictors to isolate between- and within-cluster contrasts. This within-cluster centering is usually an easy data-manipulation step. However, centering variables on the observed means can bias the resulting… • r, statistics • 2,390 words
  • How I like to set up my computer (2022-12-08)
    Some notes (for myself) on how I like to set up my MacOS environment for work (and fun). • workflow • 728 words
  • Tidymultiverse (2022-12-07)
    How to conduct multiverse analyses in R with tidy pipelines and parallel processing. • r, statistics • 3,701 words
  • Some alternatives to raincloud plots (2022-12-06)
    I like raincloud plots, but think that they can duplicate the information a bit, which might have detrimental effects on clarity and comprehension. • r, visualization • 957 words
  • How to run R remotely (2022-12-03)
    Running R on a remote computer is surprisingly easy • r, workflow • 1,062 words
  • Website favicons with hexSticker (2022-06-29)
    My journey to make a website favicon with the hexSticker R package • r • 453 words
  • Easy notifications from R (2022-06-15)
    How to send notifications from R, or any other CLI, to your phone • r, workflow • 185 words
  • How to calculate contrasts from a fitted brms model (2020-02-06)
    Answer more questions with your estimated parameters, without refitting the model. • r, statistics • 1,506 words
  • How to analyze visual analog (slider) scale data? (2019-02-18)
    A reasonable choice might be the zero-one-inflated beta model • r, statistics • 6,204 words
  • Combine ggplots with patchwork (2018-12-13)
    How to combine arbitrary ggplots • r, visualization • 387 words
  • Glue your strings together (2018-12-12)
    Use the glue R package to join strings. • r • 384 words
  • Estimating Signal Detection Models with regression using the brms R package (2017-10-09)
    Signal Detection Theory is a widely used framework for understanding decisions by distinguishing between response bias and true discriminability in various psychological domains. Manual calculation approaches to estimating SDT models' parameters, while commonly used, can be… • 15,490 words
  • Bayes Factors with brms (2017-03-21)
    How to calculate Bayes Factors with the R package brms using the Savage-Dickey density ratio method. • r, statistics • 2,373 words
  • How to create within-subject scatter plots in R with ggplot2 (2017-01-04)
    Scatterplots can be a very effective form of visualization for data from within-subjects experiments. You'll often see within-subject data visualized as bar graphs (condition means, and maybe mean difference if you're lucky.) But alternatives exist, and today we'll take a look… • r, statistics, visualization • 939 words
  • How to Compare Two Groups with Robust Bayesian Estimation in R (2017-01-02)
    2017 will be the year when social scientists finally decided to diversify their applied statistics toolbox, and stop relying 100% on null hypothesis significance testing (NHST). A very appealing alternative to NHST is Bayesian statistics, which in itself contains many… • r, statistics • 3,372 words
  • How to arrange ggplot2 panel plots (2016-12-06)
    Arrange your visual display of information to maximize your figures' impact. • r, visualization • 659 words
  • Bayesian Meta-Analysis with R, Stan, and brms (2016-09-29)
    Meta-analysis is a special case of Bayesian multilevel modeling • r, statistics • 1,928 words
  • GitHub-style waffle plots in R (2016-03-24)
    Attractive visualization for plotting activity over time in R with ggplot2. • r, visualization • 799 words
  • How to create plots with subplots in R (2016-03-15)
    Some tips on creating figures with multiple panels in R • r, visualization • 1,148 words
  • Confidence intervals in multilevel models (2016-03-06)
    How to obtain average & individual-specific confidence limits for regression lines in a multilevel regression modeling context • r, statistics • 2,623 words
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