The Dunedin Study uses a prospective-longitudinal, correlational design. This enables several different types of studies including: (1) prediction studies of the childhood correlates of later health and behavioural outcomes; (2) developmental studies of onset, course, continuity and change in health and behaviour; (3) epidemiological studies of the prevalence and incidence of health and behaviour problems, and associations among problem types; and (4) methodological studies of reliability and sampling biases.
