The History of Psychological Thought and the Psychology of Belonging

This article reconstructs the history of psychological thought as the history of the “subject” presupposed by each major psychological tradition: what the self is, what damages it, and what restores it. The paper argues that twentieth-century psychology evolved through three major paradigms—behaviorism, psychoanalysis, and developmental cognitivism—which progressively converged toward a more relational, emotional, and agentic understanding of the person. The article analyzes this historical evolution through a structural comparison of contemporary behavioral psychology, cognitive-behavioral therapy, psychoanalysis, social psychology, attachment and mentalization theories, and neo-Piagetian developmental psychology. Despite their differences, these approaches are shown to share a common limitation: they continue to treat the self as an individual entity that exists prior to its relationships, emotions, and social context. In contrast, the Psychology of Belonging introduces an ontological reconstruction summarized in the principle “being is belonging.” According to this framework, the self does not preexist its belongings but emerges from them. Psychological suffering is therefore interpreted primarily as a crisis of belonging affecting affective, social, and existential pathways. A central contribution of the article is the formalization of a six-step clinical architecture. Four pre-cognitive stages—body and movement, instincts guided by belonging, reconstruction of belonging in three pathways (love, social, existential), and emotional development—precede two cognitive stages: awareness of living and mentalization. This sequence reorganizes the causal order of therapeutic efficacy across contemporary psychological paradigms. The paper develops detailed comparative analyses of: European and North American social psychology, contemporary behavioral psychology, contemporary CBT, relational and attachment-oriented psychoanalysis, and neo-Piagetian developmental theories. Three constant clinical vignettes—loneliness after relational rupture, addiction/compulsion, and relational trauma—are used to demonstrate how crises of belonging organize psychological suffering across different symptom structures. The article concludes that the Psychology of Belonging does not compete with contemporary psychology but integrates and causally reorders it, proposing that psychological freedom and stable mental functioning emerge only when belonging is sufficiently satisfied. Because belonging is always imperfect, it simultaneously grounds individuality, creativity, and freedom.