# Recent Posts

### Visualising within-subject effects and stochastic dominance with (augmented) modified Brinley plots

Why can’t we be more idiographic in our research? It is the individual organism that is the principle unit of analysis in the science of psychology (Barlow & Nock, 2009).

### Checking the asumption of independence in binomial trials using posterior predictive checking

As put by Gelman et al. (2013, page 148): ‘because a probability model can fail to reflect the process that generated the data in any number of ways, posterior predictive p-values can be computed for a variety of test quantities in order to evaluate more than one possible model failure’.

### Using R to make sense of the general linear model

What is the difference between the errors and the residuals ? What does it mean for a model to predict something ? What is a link function ? In the current post, we use four R functions (viz., the predict, fitted, residuals and simulate functions) to illustrate the mechanisms and assumptions of the general linear model.

### Efficient Sequential Testing with Evidence Ratios

This post is a “blog version” of the vignette of my first R package, which is itself greatly inspired from the first post of this blog.

### Three methods for computing the intra-class correlation in multilevel logistic regression

In the current post, we present and compare three methods of obtaning an estimation of the ICC in multilevel logistic regression models.

# Selected Publications

### Orofacial electromyographic correlates of induced verbal rumination

Rumination is predominantly experienced in the form of repetitive verbal thoughts. Verbal rumination is a particular case of inner speech. According to the Motor Simulation view, inner speech is a kind of motor action, recruiting the speech motor system. In this framework, we predicted an increase in speech muscle activity during rumination as compared to rest. We also predicted increased forehead activity, associated with anxiety during rumination. We measured electromyographic activity over the orbicularis oris superior and inferior, frontalis and flexor carpi radialis muscles. Results showed increased lip and forehead activity after rumination induction compared to an initial relaxed state, together with increased self-reported levels of rumination. Moreover, our data suggest that orofacial relaxation is more effective in reducing rumination than non-orofacial relaxation. Altogether, these results support the hypothesis that verbal rumination involves the speech motor system, and provide a promising psychophysiological index to assess the presence of verbal rumination.
Biological Psychology, 2017.

# Teaching

I teach the following courses at Univ. Grenoble Alpes:

• BA Psychology: Data analysis
• BA Psychology: Introduction to Cognitive psychology
• BA Psychology: Cognitive psychology: perception, action and categorization
• PhD, all disciplines: Introduction to Bayesian statistical modeling

# Online ressources

## Courses on Bayesian data analysis

• Justin Esarey’s enlightening lectures on Bayesian statistics (amongst other things), and the Learn Bayes website.

• Statistical rethinking lectures by Richard McElreath on youtube and associated contents.

• Bayesian data analysis and cognitive modeling by Michael Franke & Fabian Dablander (slides).

• Bayesian Basics, wonderful introduction by Michael Clark here.