Is conflict adaptation triggered by feature repetitions? An unexpected finding

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Behavior

Background:

• Cognitive adaptation to response conflict is traditionally viewed as a key indicator of cognitive control.
• Debate persists regarding the mechanisms underlying conflict adaptation, particularly for unconscious conflict.
• The role of low-level feature repetitions versus higher-level cognitive control processes remains contentious.

Purpose of the Study:

• To investigate whether feature repetitions, rather than cognitive control, account for cognitive adaptation to unconscious conflict.
• To examine the influence of feature repetitions on the congruency sequence effect (CSE).

Main Methods:

• Two masked priming experiments were conducted using four stimuli and four distinct responses.
• Experimental design aimed to completely eliminate prime and target repetitions across consecutive trials.
• A third experiment excluded trials with feature repetitions a priori.

Main Results:

• Contrary to the standard congruency sequence effect (CSE), conflict adaptation effects increased after incongruent trials in both masked priming experiments.
• This reversed effect vanished when trials with feature repetitions were excluded.
• A third experiment, excluding feature repetitions, revealed a small, regular CSE only in error rates.

Conclusions:

• The findings challenge interpretations of conflict adaptation based on feature repetitions or cognitive control.
• The results suggest that cognitive adaptation, with or without feature repetitions, is more complex than commonly assumed.
• The study highlights the critical need to consider feature repetition effects when examining cognitive adaptation.