Introduction to the special issue “Developing Psychosocial Skills in Children and Youth,” coordinated by Béatrice Lamboy, Ph.D. in Psychology, Program Director, INPES. Jacques Fortin, pediatrician, Honorary Professor at the Lille Faculty of Medicine. Jean-Christophe Azorin, teacher-trainer, Participe-Santé, Montpellier. Mabrouk Nekaa, nurse and technical advisor, trainer, Lyon Regional Education Authority.