The Cannabis Cohorts Research Consortium (CCRC) is a collaboration which stemmed from the need to better address important questions about the relationship between cannabis, other drug use, life-course outcomes and mental health in children and young adults. The CCRC is a multi-organisational and multi-disciplinary international collaboration which brings together researchers from some of the largest and longest-running longitudinal studies in Australia and New Zealand. The. CCRC has has focused on harmonising and pooling data across individual cohorts to improve understanding and of the link between cannabis use (particularly rarer patterns of high use) and other substance use, mental health problems and psychosocial outcomes. Research outcomes have informed government and policy decisions globally on the risks of cannabis use in young people.


Consortium name Cannabis Cohort Research Consortium
Abbreviation  CCRC
Principal investigator/s Prof Richard Mattick, A/Prof Delyse Hutchinson, Dr Edmund Silins, A/Prof John Horwood, Prof David Fergusson, Prof Jake Najman, Prof George Patton, Prof Craig Olsson, Prof John Toumbourou, Prof Louisa Degenhardt
Project Contact Prof Richard Mattick and A/Prof Delyse Hutchinson
Postal address

National Drug and Alcohol Research Centre, University of New South Wales, Sydney, Sydney, NSW 2052


+612 9385 0333


Primary Institution University of New South Wales (UNSW)
Collaborating Institution/s
  • Centre for Adolescent Health, Royal Children͛s Hospital, Parkville, Melbourne 
  • Centre for Mental Health Research, Australian National University, Canberra 
  • Centre for Social and Early Emotional Development, Deakin University, Melbourne 
  • Christchurch School of Medicine and Health Sciences, University of Otago, Christchurch, New Zealand 
  • Murdoch Childrens Research Institute, Royal Children͛s Hospital, Melbourne 
  • National Drug Research Institute, Curtin University, Perth 
  • Queensland Alcohol and Drug Research and Education, University Of Queensland, Brisbane 
  • School of Paediatrics, Royal Children’s Hospital, Melbourne 
  • School of Population Health, University of Queensland, Brisbane 
  • School of Psychology, Deakin University, Melbourne 
  • School of Sociology, Social Policy and Social Work, Queens University, Belfast
  • Telethon Institute for Child Health Research, Perth 
  • University of Queensland, Brisbane 
  • University of Melbourne, Melbourne
  • University of Tasmania, Tasmania
Major funding sources NHMRC
Study website
Protocol paper Hutchinson, D. M., Silins, E., Mattick, R. P., Patton, G. C., Fergusson, D. M., Hayatbakhsh, R., Toumbourou, J.W., Olsson, C.O., Najman, J.M., Spry, E., Tait, R. J., Degenhardt, L., Swift, W., Butrterworth, P., L. John Horwood (2015). How can data harmonisation benefit mental health research? An example of The Cannabis Cohorts Research Consortium. Australian & New Zealand Journal of Psychiatry, 49(4), 317-323. doi: 10.1177/0004867415571169
Year commenced 2006
Australian cohorts

The Australian Temperament Project (ATP)

Mater-University of Queensland Study of Pregnancy (MUSP)

Personality and Total Health (PATH) Through Life Project

Western Australian Pregnancy Cohort (Raine) Study,

2000 Stories – Victorian Adolescent Health Cohort Study (VAHCS).

International cohorts

The Christchurch Health and Development Study (CHDS)

Ethics approvals or requirements? Yes, relevant ethics approvals were obtained.