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Is social inhibition of return due to action co-representation?

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      Abstract

      When two individuals alternate reaching responses to visual targets presented on a shared workspace, one individual is slower to respond to targets occupying the same position as their partner's previous response. This phenomenon is thought to be due to processes that inhibit the initiation of a movement to a location recently acted upon. However, two distinct forms of the inhibition account have been posited, one based on inhibition of an action, the other based on inhibition of an action and location. Furthermore, an additional recent explanation suggests the phenomenon is due to mechanisms that give rise to action congruency effects. Thus the three different theories differ in the degree to which action co-representation plays a role in the effect. The aim of the present work was to examine these competing accounts. Three experiments demonstrated that when identical actions are made, the effect is modulated by the configuration of the visual stimuli acted upon and the perceptual demands of the task. In addition, when the co-actors perform different actions to the same target, the effect is still observed. These findings support the hypothesis that this particular joint action phenomenon is generated via social cues that induce location-based inhibition of return rather than being due to shared motor co-representations.

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      Affiliations
      [1 ] Centre for Brain Science, University of Essex, Wivenhoe Park, Colchester CO4 3 SQ, UK. Electronic address: matkinb@essex.ac.uk.
      [2 ] Centre for Brain Science, University of Essex, Wivenhoe Park, Colchester CO4 3 SQ, UK.
      [3 ] Department of Psychology, University of Hull, Yorkshire HU6 7RX, UK.
      [4 ] Centre for Brain Science, University of Essex, Wivenhoe Park, Colchester CO4 3 SQ, UK. Electronic address: ggcole@essex.ac.uk.
      Journal
      Acta Psychol (Amst)
      Acta psychologica
      Elsevier BV
      1873-6297
      0001-6918
      Jul 2014
      : 150
      24859672
      S0001-6918(14)00091-2
      10.1016/j.actpsy.2014.04.003

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