The authors focus in this volume on a wide range of activities that are part of the role of parents. Monique Bonnet, a nurse and child specialist, mother of four children, and Gérard Bonnet, a psychoanalyst, doctor in psychology and professor at the University of Paris VII, focus in this volume on a wide range of activities that are part of the role of parents. Based on a clear and effective exposition of the psycho-affective nature of childhood and the different stages that mark its evolution, the authors specify the milestones of the rapid transformation that takes place in the first years of a child's life, from the first signs of psychomotor activity to the definitive appearance of language and the imaginative function. For each stage and circumstance, the authors assign a task to parents, who thus become true collaborators in the evolution of their children.