“…Building on the description of human nonverbal communication (Eibl-Eibesfeldt, 1989 ; Jakobs et al, 1999 ; Schmidt & Cohn, 2001 ), clinical studies during interviews have applied the ethological method (Ethological Coding System for Interviews, ECSI; Troisi, 1999 ) to investigate social dysfunctions in psychiatric disorders, diagnostic classification, and prediction of the treatment outcome (Geerts et al, 1996 ; McGuire & Polsky, 1979 ; Schelde, 1998 ; Schelde et al, 1988 ; Troisi, 1999 ; Troisi et al, 1989 ; Troisi et al, 1991 ; Troisi et al, 1998 ; Troisi et al, 2007 ). In light of the well-established literature describing that individuals subjected to child maltreatment have interpersonal and social communication problems (for a systematic review see: Hyter, 2021 ; Stacks et al, 2011 ; Stivanin et al, 2016 ), it is possible to hypothesize the presence of an alteration in non-verbal behaviour belonging to the area of social communication (e.g. submission [i.e.…”