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People accurately predict the transition probabilities between actions.

Mark A Thornton1, Diana I Tamir2

  • 1Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NH 03755, USA. mark.a.thornton@dartmouth.edu.

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People accurately predict others' actions by understanding how actions typically transition. This research reveals mental models of action transitions are key to social coordination.

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Area of Science:

  • Cognitive Psychology
  • Social Cognition
  • Behavioral Science

Background:

  • Social coordination requires predicting the actions of others.
  • Understanding how individuals mentally represent and utilize knowledge of action sequences is crucial for social interaction.

Purpose of the Study:

  • To investigate the mechanisms underlying human prediction of others' actions.
  • To test whether individuals possess accurate knowledge of action transition probabilities.
  • To determine if conceptual knowledge of actions aids in predicting future behavior.

Main Methods:

  • Compared empirically derived action transition rates from naturalistic datasets with participants' subjective ratings of these probabilities.
  • Conducted five preregistered studies to assess mental models of action transitions.
  • Investigated the role of a six-dimensional taxonomy of actions (ACT-FAST) in guiding predictions.

Main Results:

  • Participants demonstrated accurate mental models of action transition probabilities.
  • Knowledge of current actions combined with transition probabilities enabled accurate action prediction.
  • Conceptual knowledge of actions, structured by the ACT-FAST taxonomy, informed predictive accuracy.

Conclusions:

  • Individuals can accurately anticipate the actions of others in social contexts.
  • Mental representations of action transitions are fundamental for effective social coordination.
  • The structure of action knowledge appears optimized for predictive social interactions.