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Valeria Manera1, Cristina Becchio, Ben Schouten

  • 1Department of Psychology, Center for Cognitive Science, University of Turin, Turin, Italy. valeria.manera@unito.it

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Observing communicative gestures enhances action prediction between individuals, even without physical contact. This suggests interpersonal predictive coding applies to communication, aiding in anticipating others' actions.

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Area of Science:

  • Cognitive Science
  • Social Neuroscience
  • Human Interaction

Background:

  • Interpersonal predictive coding is established in physically interactive contexts like dancing or fighting.
  • Previous research suggests action prediction relies on physical contingencies between agents.

Purpose of the Study:

  • To investigate if interpersonal predictive coding extends to communicative interactions.
  • To determine if communicative gestures predict subsequent actions without physical contact.

Main Methods:

  • Participants viewed point-light displays of two agents (A and B) performing actions.
  • A communicative condition involved agent B responding to agent A's gesture.
  • An individual condition used a non-communicative action for agent A.
  • A simultaneous masking detection task assessed visual discrimination.

Main Results:

  • Observing agent A's communicative gesture significantly enhanced visual discrimination of agent B's actions.
  • This enhancement occurred even when no physical contingency was implied between agents.

Conclusions:

  • Communicative gestures act as predictors for subsequent actions in interactive contexts.
  • Interpersonal predictive coding extends beyond physical interactions to include communication.
  • Findings support the role of predictive coding in understanding and anticipating human behavior in social settings.