Interpersonal postural coordination on rigid and non-rigid surfaces

Thomas A. Stoffregen, M. Russell Giveans, Sebastien Villard, Jane Redfield Yank, Kevin Shockley

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


When two standing people converse with each other there is an increase in their shared postural activity, relative to conversation with different partners. We asked pairs of participants to converse with each other or with experimental confederates while standing on rigid and nonrigid surfaces. On the rigid surface, shared postural activity was greater when participants conversed with each other than when they conversed with confederates. In addition, the strength of interpersonal coupling increased across trials, but only when members of a dyad conversed with each other. On the nonrigid surface, postural sway variability increased, but we found no evidence that shared postural activity was different when participants conversed with each other, as opposed to conversing with confederates. We consider several possible interpretations of these results.

Original languageEnglish (US)
Pages (from-to)471-483
Number of pages13
JournalMotor control
Issue number4
StatePublished - Oct 2009


  • Conversation
  • Interpersonal coordination
  • Perception-action
  • Postural control
  • Postural dynamics
  • Stance


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