Selective suppression of taboo information in visual word recognition: Evidence for cognitive control on semantics

The present study investigated the role of cognitive control on semantic information during visual word recognition by exploiting taboo stimuli in a lexical-decision task. We relied on delta plots and electromyography (EMG) to assess different hypothetical mechanisms of cognitive control. Previous research suggests that taboo stimuli slow down the performance across a variety of tasks due to their attention-grabbing nature. One possibility is that cognitive control counteracts the detrimental effects of taboo connotation by actively dampening such prepotent yet task-irrelevant information. Consistent with this hypothesis, we found a reversal of taboo interference effect in slowest responses, signaling the deployment of a selective suppression mechanism that needs time to fully accrue. For electromyographic data, we focused on partial errors (trials showing a subthreshold activation of the incorrect response hand) to index response-monitoring processes intervening to prevent and correct errors. We found no modulation of the likelihood of partial errors and, more generally, of response accuracy as a function of taboo connotation. Taken together, the results suggest that cognitive control may intervene to selectively suppress fast-acting and distracting taboo information, indicating a controlled semantic processing that optimizes activation to match task-relevant goals. (PsycInfo Database Record (c) 2021 APA, all rights reserved) Public Significance Statement: This study highlights the flexibility of conceptual processing during visual word recognition by providing evidence of control mechanisms that operate at the semantic level in order to meet task-relevant goals and optimize performance. (PsycInfo Database Record (c) 2021 APA, all rights reserved)