Uses findings from Seattle Longitudinal Study of adult cognitive development to assist discussion of event history analysis. Illustrates its application to data involving changes of states in individual behavior related to human aging. Describes hazard functions which permit assessment of future decline risk and prediction as to when individual…

Adolescence is a critical period in biological, cognitive, and social development. The transition from childhood to adulthood is a time of particular vulnerability and risk as well as of opportunity for preventive interventions. The Carnegie Council on Adolescent Development is seeking to assess and develop programs to facilitate this transition.…