Software
Open-source work.
A short list of the things I have built and maintain in the open: an R package for generalizability theory, two free teaching sites built with Quarto, and ESI, an AI research assistant for MSc and doctoral students in organisational psychology. All four are released under open licences; please cite the teaching sites if you use them in your own teaching.
- 01
facet (opens in a new tab)@michaelides
An R package for Generalizability Theory analyses (G-studies, D-studies, and reliability sweeps) with frequentist (lme4, aov) and Bayesian (brms) estimators. Co-developed with Duncan Jackson (King's College London).
- 02
lavaan tutorial (opens in a new tab)michaelides.github.io
A 17-tutorial, step-by-step introduction to structural equation modelling in R with lavaan: from R basics through CFA, path analysis, mediation, multilevel, growth, moderation, and measurement invariance. Written for the UEA MSc in Organisational Psychology; an R/lavaan port of Kevin Daniels' original Mplus materials.
- 03
APIM workshop (opens in a new tab)michaelides.github.io
Dyadic Data Analysis in R: a hands-on guide to the Actor–Partner Interdependence Model with both multilevel and SEM approaches, covering indistinguishable and distinguishable dyads and moderated APIM. Originally developed for the EAOHP 2026 conference workshop.
- 04
ESI (opens in a new tab)michaelides.github.io
An AI research assistant for MSc and Doctoral students in organisational psychology. It helps you define a research question, develop hypotheses, design a methodology, and analyse uploaded documents or data, and it keeps a formal research specification alongside the conversation so you can see what you have pinned down so far. It runs on free open-weight models, and is a thinking partner rather than a substitute for supervision.