“…Criterion A refers to impairments in self-related (identity and self-direction) and interpersonal (empathy and intimacy) domains of functioning that allow assessing the severity of a PD and a more specified evaluation of the core impairment (i.e., more intra-or more interpersonal) (APA, 2013;Benzi, Preti, Di Pierro, Clarkin, & Madeddu, 2019;Goth, Birkhölzer, & Schmeck, 2018a). The concept of personality functioning might be very useful for adolescent age groups as it considers fluctuations in personality (Benzi et al, 2019) and allows detecting and describing the central impairments of personality pathology during the transitional period of adolescence (Beeney et al, 2017;Benzi et al, 2019;Goth et al, 2018a). Further, this approach has proven to be crucial in specifying developmental models of adolescent PD (Benzi et al, 2019).…”