Ecole Polytechnique Federal

In this paper we modeled the effects that dominant people induce on the nonverbal behavior (speech energy and body motion) of the other meeting participants using Granger causality technique. Our initial hypothesis that more dom-inant people have generalized higher influence has not been validated. However, from the correlational analysis some interesting patterns emerged: contradicting our initial hy-pothesis dominant individuals are not accounting for the majority of the causal flow in a social interaction. More-over, they seem to have more intense causal effects as their causal density was significantly higher. Finally dominant individuals tend to respond to the causal effects more often with complementarity than with mimicry