Participants were selected from a larger sample to be 0.8 of a standard deviation above or below the mean on the Big-Five Personality extraversion scale, to produce an Extravert-Extravert dyad, an Introvert-Introvert dyad, and an Extravert-Introvert dyad.
the three interactions for the current study were more abstract in nature, providing a novel conversational format for the analysis of nonverbal expressive alignment.