The Intergenerational Cohort Consortium (ICC)
The Intergenerational Cohort Consortium (ICC) brings together three of the longest running intergenerational cohort studies in Australia and New Zealand to examine the extent to which preconception parental life histories (from infancy to parenthood) predict next generation early health and development. There are three overarching aims: 1) to describe pathways of advantage that strengthen emotional health and well-being from one generation to the next, 2) to describe pathways of disadvantage that perpetuate cycles of emotional and behavioural problems across generations, and 3) to identify modifiable factors capable of breaking intergenerational cycles.
These cohorts include The Dunedin Multidisciplinary Health and Development Study Parenting Study (est. 1972), The Australian Temperament Project Generation 3 Study (ATPG3) (est. 1983), and The Victorian Intergenerational Health Cohort Study (VIHCS) (est. 1992).
The measures featured as a part of ICC include items that have been harmonised across the above cohorts. To learn about the specific content of these items and how they were aligned, consult the study investigators or initiate a data access request.
| Year | 1992-2000 | 1998-2010 | 2006-Ongoing |
|---|---|---|---|
| Phase | Adolescence | Young adulthood | Next generation |
| Age | 14-17 years | 18-29 years | 0-10 years |
| N | in progress | ||
| RELEVANT LIFECOURSE DOMAINS | Anthropometrics | ||
| Community environment | |||
| Demographics | |||
| Education and childcare | |||
| Environmental and climate exposures | |||
| Family environment | |||
| Mental health and behaviour problems | |||
| Neurocognitive development | |||
| Pregnancy and birth | |||
| Psychosocial wellbeing | |||
| Romantic relationships | |||
| Substance use | |||
| Temperament and personality | |||
| Study Summary | |
|---|---|
| Study name | The Intergenerational Cohort Consortium |
| Study abbreviation | ICC |
| Current principal investigator/s |
Craig Olsson
Primrose Letcher |
| Current project manager |
Primrose Letcher |
| Primary Institution/s |
Deakin University
|
| Collaborating Institution/s |
Murdoch Children’s Research Institute - MCRI
The University of Melbourne - UoM Otago University |
| Major funding source/s |
Australian Research Council - ARC |
| Key reference for study | Olsson, C. A., Spry, E., Letcher, P., McAnally, H., Thomson, K., Macdonald, J., Greenwood, C., Youssef, G., Romaniuk, H., Iosua, E., Sligo, J., Hutchinson, D., McIntosh, J., O’Connor, M., McGee, R., Sanson, A., Hancox, R. J., & Patton, G. C. (2020). The Australian and New Zealand Intergenerational Cohort Consortium: a study protocol for investigating mental health and well-being across generations, Longitudinal and Life Course Studies, 11(2), 267-281. |
| Study focus |
ICC brings together three of the longest running intergenerational cohort studies in Australia and New Zealand to examine the extent to which preconception parental life histories (from infancy to parenthood) predict next generation early health and development. The aims are threefold: (1) to describe pathways of advantage that strengthen emotional health and well-being from one generation to the next, (2) to describe pathways of disadvantage that perpetuate cycles of emotional and behavioural problems across generations, and (3) to identify modifiable factors capable of breaking intergenerational cycles. |
| Sampling frame |
Population representative longitudinal cohorts ascertained in 1972, 1983, and 1992 with intergenerational samples ascertained in 1994, 2012, 2006. |
| Primary study type | Consortium / Collaboration |
| Year commenced |
2019 |
| Is this study ongoing? | Yes - the study is ongoing |
| Ongoing recruitment? | No |
| Sample size (N) |
Pooled parent (N=5423), pooled child (N=2930). |
| Survey data available? | Yes |
| Imaging data available? | No |
| Linkage to administrative dataset/s? | No, consent to link to administrative dataset(s) obtained, but linkage not yet started |
| Biosamples available? | No |
| Are data available to others outside study team, with appropriate safeguards and structures in line with the cohort’s ethics and governance processes? | Yes |
| Are there any costs associated with data/sample access for approved requests? | There are usually no costs associated with access |
| Broadest type of participant consent available |
Extended consent (can be used for future ethically approved research related to this project) |
2024
McAnally HM, Iosua E, Belsky J, Sligo JL, Letcher P, Greenwood CJ, Spry E, Thomson KC, Macdonald JA, Bolton AE, Olsson CA, Hancox RJ. (2024). Does adolescent academic achievement predict future parenting? Infant and Child Development, 33(3). DOI: 10.1002/icd.2483
2023
Letcher P, Greenwood CJ, McAnally H, Belsky J, Macdonald JA, Spry EA, Thomson KC, O'Connor M, Sligo J, Youssef G, McIntosh JE, Iosua E, Hutchinson D, Cleary J, Sanson AV, Patton GC, Hancox RJ, Olsson CA. (2023). Parental history of positive development and child behavior in next generation offspring: A two-cohort prospective intergenerational study. Child Dev, 94(1), 60 - 73. DOI: 10.1111/cdev.13839
Macdonald JA, Collins S, Greenwood CJ, Youssef GJ, Thomson KC, Letcher P, Spry EA, Olsson CA. (2023). Parenting orientations in young adulthood: Predicting timing of parenthood and quality of postpartum caregiving. J Pers Soc Psychol, 124(4), 812 - 827. DOI: 10.1037/pspp0000451
Spry EA, Olsson CA, Aarsman SR, Mohamad Husin H, Macdonald JA, Dashti SG, Moreno-Betancur M, Letcher P, Biden EJ, Thomson KC, McAnally H, Greenwood CJ, Middleton M, Hutchinson DM, Carlin JB, Patton GC. (2023). Parental personality and early life ecology: a prospective cohort study from preconception to postpartum. Sci Rep, 13(1), 3332. DOI: 10.1038/s41598-023-29139-1
Thomson KC, Greenwood CJ, Letcher P, Spry EA, Macdonald JA, McAnally HM, Hines LA, Youssef GJ, McIntosh JE, Hutchinson D, Hancox RJ, Patton GC, Olsson CA. (2023). Continuities in maternal substance use from early adolescence to parenthood: findings from the intergenerational cohort consortium. Psychol Med, 53(5), 2136 - 2145. DOI: 10.1017/S0033291721003925
2022
Macdonald JA, Greenwood C, Letcher P, Spry EA, McAnally HM, Thomson K, Hutchinson D, Youssef GJ, McIntosh J, Hancox RJ, Patton GC, Olsson CA. (2022). From adolescence to parenthood: a multi-decade study of preconception mental health problems and postpartum parent-infant bonds. Soc Psychiatry Psychiatr Epidemiol, 57(3), 601 - 610. DOI: 10.1007/s00127-020-01965-y
2021
Biden EJ, Greenwood CJ, Macdonald JA, Spry EA, Letcher P, Hutchinson D, Youssef GJ, McIntosh JE, Olsson CA. (2021). Preparing for Future Adversities: Lessons From the COVID-19 Pandemic in Australia for Promoting Relational Resilience in Families. Front Psychiatry, 12, 717811. DOI: 10.3389/fpsyt.2021.717811
Macdonald JA, Greenwood CJ, Letcher P, Spry EA, Mansour K, McIntosh JE, Thomson KC, Deane C, Biden EJ, Edwards B, Hutchinson D, Cleary J, Toumbourou JW, Sanson AV, Olsson CA. (2021). Parent and Peer Attachments in Adolescence and Paternal Postpartum Mental Health: Findings From the ATP Generation 3 Study. Front Psychol, 12, 672174. DOI: 10.3389/fpsyg.2021.672174
McAnally HM, Iosua E, Sligo JL, Belsky J, Spry E, Letcher P, Macdonald JA, Thomson KC, Olsson CA, Williams S, McGee R, Bolton AE, Hancox RJ. (2021). Childhood disadvantage and adolescent socioemotional wellbeing as predictors of future parenting behaviour. J Adolesc, 86, 90 - 100. DOI: 10.1016/j.adolescence.2020.12.005
Olsson CA, Spry EA, Alway Y, Moreno-Betancur M, Youssef G, Greenwood C, Letcher P, Macdonald JA, McIntosh J, Hutchinson D, Patton GC. (2021). Preconception depression and anxiety symptoms and maternal-infant bonding: a 20-year intergenerational cohort study. Arch Womens Ment Health, 24(3), 513 - 523. DOI: 10.1007/s00737-020-01081-5
Thomson KC, Romaniuk H, Greenwood CJ, Letcher P, Spry E, Macdonald JA, McAnally HM, Youssef GJ, McIntosh J, Hutchinson D, Hancox RJ, Patton GC, Olsson CA. (2021). Adolescent antecedents of maternal and paternal perinatal depression: a 36-year prospective cohort. Psychol Med, 51(12), 2126 - 2133. DOI: 10.1017/S0033291720000902
2020
Letcher P, Greenwood CJ, Romaniuk H, Spry E, Macdonald JA, McAnally H, Thomson KC, Youssef G, Hutchinson D, McIntosh J, Sanson A, Ryan J, Edwards B, Sligo J, Hancox RJ, Patton GC, Olsson CA. (2020). Adolescent and young adult mental health problems and infant offspring behavior: Findings from a prospective intergenerational cohort study. J Affect Disord, 272, 521 - 528. DOI: 10.1016/j.jad.2020.03.101
Olsson CA, Spry E, Letcher P, McAnally H, Thomson K, Macdonald J, Greenwood C, Youssef G, Romaniuk H, Iosua E, Sligo J, Hutchinson D, McIntosh J, O’Connor M, McGee R, Sanson A, Hancox RJ, Patton GC. (2020). The Australian and New Zealand Intergenerational Cohort Consortium: a study protocol for investigating mental health and well-being across generations Longitudinal and Life Course Studies, 11(2), 267 - 281. DOI: 10.1332/175795920x15792720930280
Spry EA, Aarsman SR, Youssef GJ, Patton GC, Macdonald JA, Sanson A, Thomson K, Hutchinson DM, Letcher P, Olsson CA. (2020). Maternal and paternal depression and anxiety and offspring infant negative affectivity: A systematic review and meta-analysis Developmental Review, 58, 100934. DOI: 10.1016/j.dr.2020.100934
| Study Contacts | |
|---|---|
| Principal investigator/s |
Craig Olsson
Primrose Letcher |
| Project manager |
Primrose Letcher |
| Study Contact |
craig.olsson@rch.org.au |