Sequential Compatibility Effects and Cognitive Control: Does Conflict Really Matter?
Résumé
Although it is widely accepted that control mechanisms are necessary for human behavior to
be adapted, very little is known about how such mechanisms are recruited. A suggestion to
fill the gap was put forward by M. M. Botvinick, T. S. Braver, C. S. Carter, D. M. Barch, and
J. D. Cohen (2001), who proposed the conflict-loop theory. This theory has been successful
in accounting for the reduction of compatibility effects after an incompatible trial: The level
of conflict being, on average, higher during an incompatible trial, more control occurs after
such a trial. The authors have tested this prediction by sorting the trials on the basis of amount
of conflict (quantified by the electromyographic activity) they presented. A reduction of the
compatibility effect was observed after incompatible trials, but it was independent of the level
of conflict on previous trials, suggesting that the conflict does not trigger changes in executive
control. Consequences for the conflict monitoring model are discussed.
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