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Author Spotlight: Deciphering the Cognitive and Neural Mechanisms of Gesture in Communication
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The engaging nature of interactive gestures.

Arianna Curioni1, Gunther Klaus Knoblich1, Natalie Sebanz1

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Interactive gestures, like handshakes, automatically prepare us to respond, influencing motor responses more than communicative gestures. This suggests privileged access to perceptual and motor systems for social interaction preparation.

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Area of Science:

  • Cognitive Psychology
  • Social Neuroscience
  • Human-Computer Interaction

Background:

  • Social interactions often involve reciprocal actions, not just instrumental ones.
  • Interactive gestures may gain privileged perceptual-motor access through inherent engagement or social learning.

Purpose of the Study:

  • To compare the hypotheses of intrinsic engagement versus social learning for interactive gestures' privileged access.
  • To investigate how interactive gestures influence response selection compared to communicative gestures.

Main Methods:

  • Behavioral experiments using a spatial compatibility task.
  • Presented participants with interactive ('hand shaking', 'requesting', 'high-five') and communicative ('Ok', 'Thumbs up', 'Peace') gestures.
  • Measured the interference of task-irrelevant gestures on behavioral responses.

Main Results:

  • Interactive gestures significantly impacted response selection.
  • Interactive gestures reduced spatial compatibility effects compared to communicative gestures.
  • This effect persisted regardless of specific social script activation.

Conclusions:

  • Interactive gestures possess privileged access to perceptual and motor systems.
  • This privileged access may stem from automatic response preparation engaging the motor system.
  • Findings have implications for developmental and neurophysiological understanding of social interaction.