add RDM with covariate

Author: Kucharssim

exercises.qmd

@@ -66,3 +66,10 @@ This notebook provides you with the very basics of the BayesFlow workflow - star
 - Download data: [here](./data/forstmann.csv){download="forstmann.csv"}
 
 This notebook provides you with a basic application of BayesFlow in the context of models of decision making - the Wald model of simple response times, and the racing diffusion model.
+
+### Racing diffusion model with covariate on decision threshold
+
+- Notebook [here](./exercises/bayesflow-diffusion-covar.ipynb){target="_blank"}
+- Download data: [here](./exercises/flash.csv){target="_blank"}
+
+In this notebook (courtesy of Leendert van Maanen), you can fit a Racing diffusion model where the decision thresholds decreases as a function of trial number, modeling a behavior of a participant who is becoming more and more impatient the longer the experiment keeps going.