The role of a psychologist can be multifaceted. The treatment of an adult in relation to that of a child changes to a very large extent. The treatment of a child is based on developmental psychology, which is based on his/her developmental age and / or the disorder he/she presents. Adults-parents or guardians, whose need is to manage and deal with their children also need appropriate and specialized treatment. Always taking into account the diversity of each family environment and each individual, the current needs are assessed, in order to get the best therapeutic procedure.