The consideration of the relation of mutual specification between a distinguished whole and the parts distinguished in it, and of their specification of two nonintersecting phenomenal domains, constitute the starting point for a radical constructivist redefinition of the ‘mind-body problem’ (MBP), where the opposition between mind and body turns into a relation of complementarity between components of a larger (social, ecological) whole. The implications as to the traditional views on the MBP are outlined, stressing in particular the overcoming of the holism/reductionism and parallelism/interactionism dualities.

Topics addressed include: constructive alternativism and the knowledge–reality relation; anticipation, self-organisation, and structural determinism; constructs, systems, and complementarity; identity, sociality, and the mind–body problem; acceptance, orthogonal interaction, and the psychotherapeutic relationship; and person-as-scientist and the narrative approach.

A psychological understanding of interpersonal processes in terms of complementarity is not new. It is enough to mention Buber (the title of our paper refers to an expression of his), as well as Bateson and his definitions of double description, binocular vision and complementary and symmetric relations. We would like to clarify the nature of complementarity, and to point out the presence of this framework in some philosophical and scientific discourses about the person. Moreover, we think that the adoption of a framework of complementarity becomes a metaphysical necessity within what we have called “hermeneutic constructivism,” and that other constructivisms fail to acknowledge it, thereby losing much of their metatheoretical, revolutionary potential. We will document the possibility of adopting a framework of complementarity with respect to different pairs of poles, which specify as many phenomenal domains: (1) the relation between any entity and its environment; (2) the relation between modes of description; (3) the relation between the person and the world; and (4) the relation between people. In the final part of the paper we outline some implications of a consideration of complementarity for the psychotherapy process. Relevance: The framework of complementarity is an essential feature of hermeneutic constructivism.

A book that proposes to outline a systematic approach to psychotherapy cannot omit describing the psychological theory such an approach belongs to. George A. Kelly had the same opinion, in that he put an analysis of the differences between the philosophical assumptions of “accumulative fragmentalism” and “constructive alternativism” before the exposition of his theory of personality and his psychotherapeutic proposal. Choosing the title for the book “Constructivist Psychotherapy: A Narrative Hermeneutic Approach” represents the attempt to mark a significant differentiation from the more orthodox expositions of Kelly’s personal construct psychotherapy on which we heavily base our approach, and at the same time to specify as much as possible our metatheoretical and theoretical references. Relevance: The book has an extensive exposition of the different constructivist views on knowledge with their links with genetic epistemology, autopoietic theory, phenomenology, hermeneutics, social constructionism, radical constructivism.