Behavioral synchrony
LME, FM
To examine the differences in the level of synchrony during real‐time interaction (real groups) versus pseudo dyads, we constructed two LME models. Both included condition (BB, FM, IS) and group assignment (Real, Pseudo) as fixed factors, the dyad's ID number as a random factor, and the total behavioral synchrony as the dependent variable. The two models differed in that the first model took only the main effects of the fixed factors into consideration, whereas the second model also included the interaction between the fixed factors. The increase in the predictive power of the models versus the cost of increasing the complexity of the models due to the interactions between the fixed effects was tested using Type II Wald Behavioral synchrony levels between Real and Pseudo group assignment in the BB, IS, and FM conditions, for Total Sync.