This book deals with anxiety and fear. In the last two decades, great progress has been made in understanding the nervous system: today we know that the mind and brain are inextricably linked together. With this in mind, the volume elaborates an overall vision that includes on the one hand the study of the neuro-psychobiological bases of fear and anxiety; and on the other, the detailed analysis of the process that takes place between two people when the experience of fear / anxiety occurs in them.