Creatures of habit (and control): a multi-level learning perspective on the modulation of congruency effects

Egner, Tobias · 2014 · OpenAlex-citations

DOI: 10.3389/fpsyg.2014.01247

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Summary

This hypothesis and theory article by Tobias Egner addresses the long-standing debate regarding the origins of the congruency sequence effect (CSE), a phenomenon where interference from distracters is reduced on trials following incongruent stimuli compared to those following congruent ones. Historically, explanations for the CSE have been divided into a dichotomy between "top-down control" accounts, which posit strategic adjustments in attention based on conflict monitoring, and "bottom-up associative" accounts, which attribute the effect to the binding of specific stimulus-response features in memory. Egner argues that this dichotomy is misleading and proposes an integrative multi-level learning perspective, suggesting that both mechanisms operate simultaneously at different levels of abstraction to facilitate fast and appropriate responding. The paper reviews empirical literature to demonstrate that CSEs can arise from distinct sources. Associative accounts, such as the feature integration model, explain CSEs through the retrieval of "event files" containing specific physical stimulus and response features, leading to facilitation on complete repetitions and costs on partial repetitions. Control-based accounts, including conflict monitoring and expectation models, propose that the cognitive system adjusts attentional focus based on the abstract experience of conflict or congruency, independent of specific stimulus features. Egner notes that while small stimulus sets often confound these mechanisms, studies controlling for feature repetitions and contingency learning still observe robust CSEs, indicating the presence of abstract-level learning processes. Egner’s central argument is that these distinct accounts describe complementary learning processes rather than opposing mechanisms. He posits that learning involves encoding both concrete features (specific stimuli and responses) and abstract features (contextual cues, experienced difficulty, and attentional control settings). Evidence for this multi-level view includes findings that CSEs are often conflict-specific, suggesting that abstract control states are bound to specific task contexts rather than being globally generalizable. Furthermore, phenomena like the item-specific proportion congruent effect demonstrate that generalizable control states can be associated with external contextual cues, such as spatial location. The significance of this perspective lies in reframing the CSE not as a choice between memory and attention, but as a unified learning scheme aimed at matching internal memories to external stimulation. By viewing top-down control and bottom-up priming as different levels of abstraction within the same learning framework, the paper provides a coherent explanation for how organisms optimize performance. This approach highlights that the ultimate goal of both concrete feature binding and abstract control adjustment is to form memory ensembles that allow for efficient processing of recurring environmental events, thereby resolving the theoretical tension between control-based and associative accounts.

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