Observing conflicting actions elicits conflict adaptation.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Motor Control

Background:

• Ideomotor theories propose action perception and planning utilize shared neural mechanisms.
• Observing multiple actions, especially conflicting ones, challenges this by potentially overloading the motor system.

Purpose of the Study:

• To investigate if observing conflicting actions elicits response conflict and adaptive control.
• To determine if action perception, like action planning, activates cognitive control processes.

Main Methods:

• Five experiments were conducted, including meta-analysis and high-powered replications.
• Participants viewed conflicting gestures or abstract shapes, followed by a prime-probe task to assess response conflict.
• A reverse congruency sequence effect was measured as an indicator of adaptive control.

Main Results:

• Observing two conflicting gestures induced a reverse congruency sequence effect, indicating response conflict.
• This effect was robust across meta-analysis and high-powered studies.
• No such effect was observed when participants viewed abstract shapes instead of human gestures.

Conclusions:

• Observing conflicting actions, particularly human gestures, elicits adaptive control, supporting shared mechanisms between action perception and planning.
• Action conflict, driven by the observation of incompatible actions, appears to be the underlying mechanism.
• Findings have significant implications for understanding action representation and cognitive control.