About

Guillaume Rousselet giving a talk at the FENS regional conference in Oslo, June 2025. — Talk at the FENS regional conference in Oslo, June 2025.

I’m Guillaume Rousselet, a senior lecturer at the University of Glasgow. My research is mostly about perception in humans, and statistics applied to behavioural and EEG data. I teach statistics and methods classes, and I’m the programme coordinator for the MSc in Brain Sciences. I’m also section editor at the European Journal of Neuroscience, and senior editor at Psychological Science. This blog is about basic statistics applied to neuroscience & psychology data. Despite a trend for more complex designs and analyses, a typical dataset undergoes massive dimensionality reduction, such that group analyses and illustrations tend to rely on a few tools, for instance bar graphs, Pearson’s correlation & ANOVAs on means. Here I focus on robust, informative & intuitive alternatives to these classic, often misunderstood, and outdated tools. I describe problems I often encounter in behavioural & brain imaging studies I review or edit, and suggest solutions.