Treball Final de Grau en Psicologia. Codi: PS1048. Curs: 2018/2019.This work has the purpose of studying the characteristics of psychological development in adulthood from the perspective of the life cycle, within the theoretical framework of the authors Erik Erikson (2000), Robert J. Havighurst (1972) and Paul Baltes (1987). The work focuses on the study of changes at the psychological level that occur throughout the life cycle. Within the study of human behavior there are two great options. On the one hand, there is the objective and external point of view that focuses on cause-effect relationships that explain how and why a person behaves in the way he does. On the other hand, there is the subjective or internal point of view tha...