Stage one in psychosocial development, (year 1) baby learns is they can trust others or not. If they receive care, then they learn that there is hope. If not, they learn fear, and mistrust of others.
(6-12 yrs): Most important role for teachers, develop sense of pride in their accomplishments, confidence is developed. If not reinforced, then feelings of inferiority is developed. Balance between successes and failures to learn.
(12-18 yrs): Student looks to future, wants to belong in society, build their identity. Creating an identity for themselves results in feeling that they are unique. Or, Role confusion happens, not knowing who they are, frustrations
(65+): Retired, look back on lives, and may feel proud of what they accomplished (wisdom), or did not accomplish what one wanted, then despair (dissatisfaction).