International Youth Development Study (IYDS)
The IYDS is a long-term study that follows the development of healthy and problem behaviours among young people in the state of Victoria, Australia and the state of Washington, United States since 2002. The original sample included approximately 1,000 students at each of three year levels in both Victoria and Washington, giving a total of nearly 6,000 participants. Participants were followed across six waves and three follow-ups until 2014, and were invited to participate in an online survey again in 2018.
Study design
Cohort
Number of participants at first data collection
2,884 (participants)
Age at first data collection
9 - 16 years (participants)
Participant year of birth
1986 - 1993 (participants)
Participant sex
All
Representative sample at baseline?
IYDS school samples are representative of their respective states’ populations.
Sample features
Countries
Year of first data collection
2002
Primary Institutions
Australian Catholic University (ACU)
Deakin University
University of Melbourne
University of Washington (UW)
Profile paper DOI
Funders
National Health and Medical Research Council (NHMRC)
Australian Research Council (ARC)
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
Ongoing?
Yes
Data types collected
- Interview – phone
- Self-report questionnaire – online
- Self-report questionnaire – paper or computer assisted
- None
- None
- None
Engagement
Keywords
