Omar David Perez

This study shows that punishment's effect on behavior depends on the current value of the punisher, not just its prior occurrence, using an outcome revaluation procedure in rats.

The paper analyzes human eyeblink habituation data to show that group-averaged habituation curves can misrepresent individual variability in curve shapes.

The paper tests how human goal-directed behavior responds to interventions disrupting action-outcome contingencies, finding that behavior remains sensitive to outcome value despite these interventions.

The paper uses fMRI decoding to show that neural activity in the posterior putamen during learning predicts individual differences in habit versus goal-directed behavior across multiple cohorts.

This study tests how cue similarity affects the summation effect in causal learning and finds no significant impact of similarity on summation, challenging similarity-based models.