Dunedin Multidisciplinary Health and Development Study

The Dunedin Multidisciplinary Health and Development Study (often referred to as the Dunedin Longitudinal Study) is a long-running cohort study of 1037 people born over the course of a year in Dunedin, New Zealand.

The original pool of study members were selected from those born between 1 April 1972 and 31 March 1973 and still living in the Otago region 3 years later. Study members were assessed at age three, and then at ages 5, 7, 9, 11, 13, 15, 18, 21, 26, 32 and, most recently, at age 38 (2010-2012). Future assessments are scheduled for ages 44 and 50.

During an assessment, study members are brought back to Dunedin from wherever in the world they live. They participate in a day of interviews, physical tests, dental examinations, blood tests, computer questionnaires and surveys. Sub-studies of the Dunedin Study include the Family Health History Study which involved the parents of Dunedin Study members to find out about the health of family members (2003-2006); the on-going Parenting Study which focuses on the Dunedin Study member and their first three-year-old child; and the Next Generation Study which involves the offspring of Dunedin Study members as they turn 15 and looks at the lifestyles, behaviours, attitudes and health of today's teenagers, and aims to see how these have changed from when the original Study Members were 15 (in 1987-88). This means that information across three generations of the same families will be available.

Great emphasis is placed on retention of study members. At the most recent (age 38) assessments, 96% of all living eligible study members, or 961 people, participated. This is unprecedented for a longitudinal study, with many others worldwide experiencing 20–40% drop-out rates.

The resulting database has produced a wealth of information on many aspects of human health and development. over 1,130 papers, reports, book chapters and other publications have been produced using findings from the study. The multidisciplinary aspect of the study has always been a central focus, with information ranging across:
 * Cardiovascular health and risk factors
 * Respiratory health
 * Oral health
 * Sexual and reproductive health
 * Mental health
 * Psychosocial functioning
 * Other health, including sensory, musculo-skeletal, and digestive

A book, From Child to Adult: Dunedin Multidisciplinary Health and Development Study, was published in 1996 and aimed at presenting the major findings in a form accessible to the non-specialist. It only includes information up to the age-21 assessment. Future plans for the Dunedin Multidisciplinary Health and Development Study include another popular science book, upgrading their website for more non-specialist appeal, and introducing more resources for the general public.

Media reports of results

 * 2006, Smacking study hits at claims of harm
 * 2006, Physical punishment was extremely prevalent...
 * 2005, Cannabis and psychotic behaviour
 * 2002, MAOA gene and violence
 * 2002, Cannabis and tobacco equally bad
 * 2001, Study clears cannabis as root of violence

Research papers
A sample of the publications based on the Dunedin study:
 * Sex Differences in Developmental Reading Disability
 * Psychiatric disorders and risky sexual behaviour in young adulthood: cross sectional study in birth cohort
 * Cannabis use in adolescence and risk for adult psychosis: longitudinal prospective study
 * Moderation of the Effect of Adolescent-Onset Cannabis Use on Adult Psychosis by a Functional Polymorphism in the catechol-O-Methyltransferase Gene:Longitudinal Evidence of a Gene X Environment Interaction
 * Moffitt, T. E., Caspi, A., Rutter, M., & Silva, P. A. (2001). "Sex differences in antisocial behavior." Cambridge: Cambridge University Press. ISBN 0-521-01066-7