Disentangling task conflict and information conflict in the Stroop task

This study aims to test the interplay between task and information conflicts in the Stroop task. Specifically, we will measure task conflict (RTneutral words − RTneutral shapes) while controlling for frequency and contingency learning effects. By doing so, the current study will resolve inconsistencies and potential confounds that existed in previous studies. We will recruit 500 participants who will perform the color-word Stroop task and will be randomized to one of four different groups: mostly words with congruent trials, mostly symbols with congruent trials, mostly words with incongruent trials, and mostly symbols with incongruent trials and task conflict will be measured in each group. We predict a strong task conflict in the mostly symbols with congruent condition, indicating that task conflict can manifest independently of information conflict. Additionally, we expect an increased task conflict marker in the presence of incongruent trials, indicating that information conflict enhances task control activation.