Winnicott's research on the continual ‘becoming’ of personal psychic life. «My latest brain-child». The interest in the primitive areas of the mind was a constant in all Winnicott's clinical and theoretical research: his attention centres on the aspects of the psyche which always offer developmental potential, both in the infant and in the psychotic adult. Meeting an alterity that is not annihilating and able to get in touch sets in motion creative abilities of psychic growth. «My latest brain-child» is an expression that refers both to the inexhaustible spirit of research into relational psychic functioning and to the «unfinished» quality of Winnicott's theoretical construction.

KEY WORDS: Dependence, independence, object quality, psychic plasticity, relation, subjectivation.