The influence of higher-order action predictions on action perception
Tue-A8-Talk IV-02
Presented by: Katrina McDonough
Recent proposals suggest that higher-order knowledge about others’ goals and intentions shapes the perceptual experience of their behaviour. To test this idea, we showed participants videos of an actor reaching efficiently, straight towards an object or arched over an obstacle, or inefficiently, straight towards an obstacle or arched over an empty space. The hand suddenly disappeared, and participants indicated its last seen position. Perceptual judgements were consistently biased towards action expectations, such that straight reaches were perceived to have reached higher when there was an obstacle to overcome compared to no obstacle, and arched reaches were perceived lower when there was no obstacle. Importantly, these biases depended (1) on the actor being able to see the scene (instead of wearing a blindfold), and on (2) on the actor’s (potentially false) belief about whether an obstacle was present. This shows that action expectations from higher-order processing of theory of mind guide action perception and contribute to the understanding of other peoples’ actions.
Keywords: action prediction, action perception, predictive-processing