The authors try to afford the issue of psychotherapist self-disclosure, first within systemic psychotherapy historic development and then within phenomenological tradition, that is, like a disposition to disclose oneself toward the world of others. The psychotherapist strains to achieve a subjective dimension of authenticity, in the meanwhile meeting with an analogous condition inside the patient mind, beyond the "technical" use of autobiographic skills. The foundation of this clinical component is endowed by the existence of the implicit side of the relatedness, built up from embodied sensory-motors drafts, stored in the attachment system procedural memory. In family therapy setting the psychotherapist can perceive resonances that are not carried by the declarative level of the relationships, but by attitudes, vocal tonalities, synchronies, that can drive him to support intersubjective moments between family members or between himself and family members.
Keywords: Self-disclosure, phenomenology, procedural memory – embodied sensory- motors drafts, attachment, family therapy