title: Prejudiced interactions: implicit racial bias reduces predictive simulation during joint action with an out-group avatar.
abstract: During social interactions people automatically apply stereotypes in order to rapidly categorize others. Racial differences are among the most powerful cues that drive these categorizations and modulate our emotional and cognitive reactivity to others. We investigated whether implicit racial bias may also shape hand kinematics during the execution of realistic joint actions with virtual in- and out-group partners. Caucasian participants were required to perform synchronous imitative or complementary reach-to-grasp movements with avatars that had different skin color (white and black) but showed identical action kinematics. Results demonstrate that stronger visuo-motor interference (indexed here as hand kinematics differences between complementary and imitative actions) emerged: i) when participants were required to predict the partner's action goal in order to on-line adapt their own movements accordingly; ii) during interactions with the in-group partner, indicating the partner's racial membership modulates interactive behaviors. Importantly, the in-group/out-group effect positively correlated with the implicit racial bias of each participant. Thus visuo-motor interference during joint action, likely reflecting predictive embodied simulation of the partner's movements, is affected by cultural inter-individual differences.
authors: 1] Department of Psychology, Sapienza University of Rome, Italy [2] IRCCS Fondazione Santa Lucia, Rome, Italy.
authors: Lucia Maria
authors: LM
authors: Sacheli
authors: 1] Section Computational Sensomotorics, Department of Cognitive Neurology, Hertie Institute for Clinical Brain Research [2] Centre for Integrative Neuroscience, University Clinic Tübingen, Germany.
authors: Andrea
authors: A
authors: Christensen
authors: 1] Section Computational Sensomotorics, Department of Cognitive Neurology, Hertie Institute for Clinical Brain Research [2] Centre for Integrative Neuroscience, University Clinic Tübingen, Germany.
authors: Martin A
authors: MA
authors: Giese
authors: 1] Section Computational Sensomotorics, Department of Cognitive Neurology, Hertie Institute for Clinical Brain Research [2] Centre for Integrative Neuroscience, University Clinic Tübingen, Germany.
authors: Nick
authors: N
authors: Taubert
authors: 1] Department of Psychology, Sapienza University of Rome, Italy [2] IRCCS Fondazione Santa Lucia, Rome, Italy.
authors: Enea Francesco
authors: EF
authors: Pavone
authors: 1] Department of Psychology, Sapienza University of Rome, Italy [2] IRCCS Fondazione Santa Lucia, Rome, Italy.
authors: Salvatore Maria
authors: SM
authors: Aglioti
authors: 1] Department of Psychology, Sapienza University of Rome, Italy [2] IRCCS Fondazione Santa Lucia, Rome, Italy.
authors: Matteo
authors: M
authors: Candidi
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D011287:Prejudice; D011597:Psychomotor Performance; D063505:Racism; D055815:Young Adult