A passive computational marker for individual differences in non-reinforced learning

Cue-Approach Training (CAT) is a paradigm that enhances preferences without external reinforcmeents, suggesting a potential role for internal learning processes. Here, we developed a novel Bayesian computational model to quantify anticipatory response patterns during the training phase of CAT. This phase includes individual items and thus this marker is potentially of internal learning signals at the item level. Our model, fitted to meta-analysis data from 29 prior CAT experiments, was able to predict individual differences in non-reinforced preference changes using a key computational marker. Crucially, two new experiments manipulated the training procedure to influence the models predicted learning marker. As predicted and preregistered, the manipulation successfully induced differential preference changes, supporting a causal role of our model. These findings demonstrate powerful potential of our computational framework for investigating intrinsic learning processes. This framework could be used to predict preference changes and opens new avenues for understanding intrinsic motivation and decision-making. TeaserBayesian modeling of response time predicts individual differences in non reinforced preference change.