Erikson is credited with coining the term "identity crisis". He describes identity crisis as a critical part of development in which an adolescent or youth develops a sense of self. Identity crisis involves the integration of the physical self, personality, potential roles and occupations. It is influenced by culture and historical trends.This stage is necessary for the successful development of future stages. Each stage that came before and that follows has its own 'crisis', but even more so now, for this marks the transition from childhood to adulthood. This passage is necessary because "Throughout infancy and childhood, a person forms many identifications. But the need for identity in youth is not met by these." This turning point in human development seems to be the reconciliation between 'the person one has come to be' and 'the person society expects one to become'. This emerging sense of self will be established by 'forging' past experiences with anticipations of the future. In relation to the eight life stages as a whole, the fifth stage corresponds to the crossroads: