APA Dictionary of Psychology

the eighth and final stage of Erikson’s eight stages of psychosocial development, which occurs during old age. In this stage, the individual reflects on the life they have lived and may develop either integrity—a sense of satisfaction in having lived a good life and the ability to approach death with equanimity—or despair—a feeling of bitterness about opportunities missed and time wasted, and a dread of approaching death. Also called ego integrity versus despair.