“…During the dyadic interactions of psychotherapy, patients and therapists have been shown to synchronize in verbal, non-verbal, and physiological behavior (Marci et al, 2007;Ramseyer and Tschacher, 2008;Lord et al, 2015;Koole and Tschacher, 2016;Kleinbub, 2017). A growing body of empirical research has associated the degree to which interpersonal synchrony is present during therapy with therapeutic outcome (Ramseyer and Tschacher, 2014), empathy (Marci et al, 2007;Imel et al, 2014;Lord et al, 2015), the formation of the therapeutic relationship (Ramseyer and Tschacher, 2011), personality traits (Tschacher et al, 2018), and emotion regulation (Galbusera et al, 2019;Soma et al, 2019). Due to their integrative value, processes of interpersonal synchrony have thus moved to the center of attention of psychotherapy research and related fields (Ramseyer and Tschacher, 2006).…”