The aim of this work is to reflect on the place of the psychologist in restorative practices of Justice from the perspectives of the discoveries of neuroscience, especially the theory of polivagal sub regulation of autonomic nervous system (ANS), developed by neuroscientist Stephen Porges. Specifically, the study aims to evaluate the extent the theory polivagal explains the goods results of the restorative process of Restorative Justice in Porto Alegre with adolescents in conflict with the law. The theory polivagal presents psychophysiology of violent behavior and challenges the psychology to create new approaches to repair of damage and violence prevention. The whole idea is to evaluate the possible contribution that psychology could offer to new paradigms of resolution of the conflicts of Justice and the culture of peace.