Fig. 1.

Illustration and timing of all condition-specific gaze-based interaction sequences (IP = Interaction partner). Conditions were presented in blocks of 18 s, with 3 trials per block. After each picture cue the participants completed three corresponding interaction trials (~ 6 s). The intertrial interval varied depending on the participant's reaction time toll fill up ~ 6 s before the beginning of the next trial. Note that each time indicated with tilde indicates an average time across participants (Oberwelland et al., 2016).