“…While recent advances have been made in the domain of relating nonverbal synchrony to qualitative aspects of nonverbal behavior (Fujiwara et al, 2020;Altmann et al, 2021a,b), our conceptualization of nonverbal synchrony will be focused on movement dynamics, irrespective of movement quality or direction (Ramseyer, 2020b). Generally speaking, studies on synchrony in interpersonal relationships have increased in recent years (Chetouani et al, 2017), and numerous positive aspects of interactional synchrony and interpersonal relationships have been reported (Chartrand and Lakin, 2013), but nonverbal synchrony between a coach and a client as specified in this paper has, so far, received no attention in coaching psychology. This is unfortunate as phenomena of social coordination are both the product of and contribute to positive interactions (Stel and Vonk, 2010;Koole and Tschacher, 2016;Omer et al, 2019).…”