Aim: Clarify how linguistic coevolution and creation are crucial in the theory of psychotherapeutic technique.
Method: The paradox of private language, structural coupling and synchronization theory, are introduced in order to highlight how multiple components are involved in psychotherapeutic relations. A review and discussion of some relevant studies.
Results: A therapeutic approach based on coevolution, bipersonal fields, implicit communication and procedural knowledge can be more effective in modifying different forms of memory.
Discussion: This evidence based approach represents a scientific advancement in psychotherapy, including effectiveness of care, personalisation and ethics.