in the field of sociology and mental health, aging is seen in five different views: aging as maturity, aging as decline, aging as a life-cycle event, aging as generation, and aging as survival. positive correlates with aging often include economics, employment, marriage, children, education, and sense of control, as well as many others, being acknowledged that resources and reserves can influence aging differently. the social science of aging includes disengagement theory, activity theory, selectivity theory, and continuity theory. retirement, a common transition faced by the elderly, may have both positive and negative consequences. as cyborgs currently are on the rise some theorists argue there is a need to develop new definitions of aging and for instance a bio-techno-social definition of aging has been suggested.