LifeCourse A Melbourne Children's Research Initiative

Australian Temperament Project (ATP)

The Australian Temperament Project (ATP) is one of Australia’s oldest longitudinal studies of social and emotional development. In 1983, a representative sample of over 2000 infants and their parents were recruited. These participants have been followed from approx 4-8 months and are now in their 40s, with their parents now in their 70s. Offspring of these original ATP participants were recruited as part of the Generation 3 study.

The study has collected detailed age-appropriate survey data on temperament, internalising (depression/anxiety), externalising (violence and addiction) and positive developmental outcomes over 16 waves. Wave 17 is in the field in 2024-25 and will investigate the developmental origins of ageing across the lifespan. Parents (Generation 1) and their offspring (Generation 2) have now been followed over 4 decades (17 waves).

Bringing together data across three generations, the ATP now provides a rare opportunity to address key questions about how the experiences of one generation may affect the next, from grandparent to parent to child.

ATP
ATPG3

Year	1983	1984	1985	1986	1988	1990	1992	1994	1995	1996	1998	2000	2002	2006	2010	2014
Wave	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
Age	4-8 months	1-2 years	2-3 years	3-4 years	5-6 years	7-8 years	9-10 years	11-12 years	12-13 years	13-14 years	15-16 years	17-18 years	19-20 years	23-24 years	27-28 years	31-32 years
N	G1: 2443	G1: 1245	G1: 1317	G1: 1677	G1: 1724	G1: 1605	G1: 1544	Total: 1477 G1: 1471 G2: 1452	Total: 1297 G1: 1275 G2: 1228	Total: 1402 G1: 1391 G2: 1358	Total: 1401 G1: 1379 G2: 1308	Total: 1381 G1: 1308 G2: 1262	Total: 1278 G1: 1104 G2: 1158	Total: 1214 G1: 968 G2: 1000	Total: 1284 G1: 947 G2: 1055	Total: 1171 G1: 777 G2: 937
RELEVANT LIFECOURSE DOMAINS	Anthropometrics								Anthropometrics		Anthropometrics		Anthropometrics
	Community environment
	Demographics
	Education and childcare
	Family environment
	Mental health and behaviour problems
	Methodology			Methodology			Methodology		Methodology							Methodology
													Miscellaneous
	Neurocognitive development			Neurocognitive development				Neurocognitive development
	Nutrition								Nutrition		Nutrition					Nutrition
	Other health information				Other health information			Other health information					Other health information
								Peer relationships
								Physical activity					Physical activity
	Pregnancy and birth
	Psychosocial wellbeing				Psychosocial wellbeing
									Puberty
												Romantic relationships
											Sexual health and activity
				Speech and language
										Substance use
	Temperament and personality

Year	2012-2019	2014-2019	2012-2020	2015-Ongoing	2021-Ongoing
Wave	1	2	3	4	5
Age	32-40 weeks gestation	8-12 weeks	12-18 months	4-6 years	9-11 years
N	737	555	1086	in progress	in progress
RELEVANT LIFECOURSE DOMAINS	Anthropometrics
	Community environment
	Demographics
	Education and childcare
	Environmental exposures
	Family environment
	Medications and supplements
	Mental health and behaviour problems
			Neurocognitive development
		Nutrition
			Other health information
				Peer relationships
	Pregnancy and birth
	Psychosocial wellbeing
					Puberty
	Romantic relationships		Romantic relationships
				Screen and technology use
		Sleep
				Speech and language
	Substance use		Substance use
			Temperament and personality

ATP
ATPG3

Study Summary
Study name	Australian Temperament Project
Study abbreviation	ATP
Current principal investigator/s	Craig Olsson
Current project manager	Dr Lisa Mundy Ms Elissa Phillips Dr Kate Stephens
Primary Institution/s	Deakin University The Royal Children’s Hospital - RCH
Collaborating Institution/s	Murdoch Children’s Research Institute - MCRI The University of Melbourne - UoM Australian Institute of Family Studies La Trobe University
Major funding source/s	National Health and Medical Research Council - NHMRC Australian Research Council - ARC Deakin University Murdoch Children’s Research Institute - MCRI
Study website	https://www.melbournechildrens.com/atp/
Key reference for study	Vassallo, S. and Sanson, A. (Eds.). (2013). The Australian Temperament Project: The first 30 years. Melbourne: Australian Institute of Family Studies.
Study focus	(1) Young people’s psychosocial development from infancy to adulthood, investigating the contribution of individual (including temperament and behaviour), family, peer and broader environmental factors to adjustment and wellbeing. (2) Identifying social determinants in the first half of the life course that shape length and quality of life in the second half of the life course.
Sampling frame	Families with a 4-8 month old child who attended local urban or rural maternal and child health centres in one of twenty LGA areas in Victoria between 22nd April and 6th of May 1983. In 2012, offspring of these babies were recruited and make up the Generation 3 cohort.
Primary study type	Longitudinal cohort
Year commenced	1983
Is this study ongoing?	Yes - the study is ongoing
Ongoing recruitment?	No
Sample size (N)	4046 Generation 1 (G1) participants (parents of G2) 2443 Generation 2 (G2) participants 1167 Generation 3 (G3) participants (offspring of G2)
Survey data available?	Yes
Imaging data available?	No
Linkage to administrative dataset/s?	No, no consent to link to administrative dataset(s) obtained
Biosamples available?	Yes
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 may be costs associated with access, evaluated on a case by case basis
Broadest type of participant consent available	Extended consent (can be used for future ethically approved research related to this project)

Study Summary
Study name	Australian Temperament Project: Generation 3 Cohort Study
Study abbreviation	ATPG3
Current principal investigator/s	Craig Olsson
Current project manager	Dr Lisa Mundy Ms Elissa Phillips Dr Kate Stephens
Primary Institution/s	Deakin University The Royal Children’s Hospital - RCH
Collaborating Institution/s	Murdoch Children’s Research Institute - MCRI The University of Melbourne - UoM Australian Institute of Family Studies La Trobe University
Major funding source/s	National Health and Medical Research Council - NHMRC Australian Research Council - ARC Deakin University Murdoch Children’s Research Institute - MCRI
Study website	https://www.melbournechildrens.com/atp/
Key reference for study	Vassallo, S. and Sanson, A. (Eds.). (2013). The Australian Temperament Project: The first 30 years. Melbourne: Australian Institute of Family Studies.
Study focus	Young people’s psychosocial development from infancy to adulthood, investigating the contribution of individual (including temperament and behaviour), family, peer and broader environmental factors to adjustment and wellbeing.
Sampling frame	In 2012, offspring of Generation 2 participants (who were recruited as babies) were recruited and make up the Generation 3 cohort.
Primary study type	Longitudinal cohort
Year commenced	2012
Is this study ongoing?	Yes - the study is ongoing
Ongoing recruitment?	No
Sample size (N)	1167 Generation 3 (G3) participants
Survey data available?	Yes
Imaging data available?	No
Linkage to administrative dataset/s?	No, no consent to link to administrative dataset(s) obtained
Biosamples available?	Yes
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 may be costs associated with access, evaluated on a case by case basis
Broadest type of participant consent available	Extended consent (can be used for future ethically approved research related to this project)

ATP
ATPG3

2025

Greenwood CJ, Letcher P, Macdonald JA, Hutchinson DM, Youssef GJ, Toumbourou JW, Spry E, Sanson A, Cleary J, Olsson CA. (2025). Illicit Substance Use and Harm in Young Adulthood: the Role of Substance Use in Close Relationships and Individual Social Skills. Int J Ment Health Addict, 23(2), 1503 - 1517. DOI: 10.1007/s11469-023-01181-0

2024

Allen K-A, Greenwood CJ, Berger E, Patlamazoglou L, Reupert A, Wurf G, May F, O’Connor M, Sanson A, Olsson CA, Letcher P. (2024). Adolescent School Belonging and Mental Health Outcomes in Young Adulthood: Findings from a Multi-wave Prospective Cohort Study School Mental Health, 16(1), 149 - 160. DOI: 10.1007/s12310-023-09626-6

Greenwood CJ, Letcher P, Laurance E, Boden JM, Foulds J, Spry EA, Kerr JA, Toumbourou JW, Heerde JA, Nolan C, Bonomo Y, Hutchinson DM, Slade T, Aarsman SR, Olsson CA. (2024). The Monitoring Illicit Substance Use Consortium: A Study Protocol. JAACAP Open, 2(4), 311 - 322. DOI: 10.1016/j.jaacop.2024.03.002

Letcher P, Greenwood CJ, Macdonald JA, Ryan J, O'Connor M, Thomson KC, Biden EJ, Painter F, Olsson CM, Edwards B, McIntosh J, Spry EA, Hutchinson D, Cleary J, Slade T, Olsson CA. (2024). Life course predictors of child emotional distress during the COVID-19 pandemic: Findings from a prospective intergenerational cohort study. J Child Psychol Psychiatry, 65(12), 1564 - 1579. DOI: 10.1111/jcpp.13995

Linardon J, Greenwood CJ, Macdonald JA, Spry EA, Wertheim EH, Le Grange D, Letcher P, Olsson CA. (2024). Eating and Body Image Disturbances in Adolescence and Substance Use Throughout Young Adulthood: Findings from the Australian Temperament Project International Journal of Mental Health and Addiction, 22(5), 2861 - 2873. DOI: 10.1007/s11469-023-01023-z

McIntosh JE, Opie J, Greenwood CJ, Booth A, Tan E, Painter F, Messer M, Macdonald JA, Letcher P, Olsson CA, ATPG3 MAC Lab and Consortium . (2024). Infant and preschool attachment, continuity and relationship to caregiving sensitivity: findings from a new population-based Australian cohort. J Child Psychol Psychiatry, 65(1), 64 - 76. DOI: 10.1111/jcpp.13865

Schuijers M, Greenwood CJ, McIntosh JE, Youssef G, Letcher P, Macdonald JA, Spry E, Le Bas G, Teague S, Biden E, Elliott E, Allsop S, Burns L, Olsson CA, Hutchinson DM. (2024). Maternal perinatal social support and infant social-emotional problems and competencies: a longitudinal cross-cohort replication study. Arch Womens Ment Health, 27(6), 1033 - 1041. DOI: 10.1007/s00737-024-01473-x

2023

Cleary J, Nolan C, Guhn M, Thomson KC, Barker S, Deane C, Greenwood CJ, Harper JT, Fuller-Tyszkiewicz M, Letcher P, Macdonald JA, Hutchinson D, Spry EA, O’Connor M, Carr V, Green M, Peachey T, Toumbourou JW, Hosking J, Nelson J, Williams J, Zubrick SR, Sanson A, Lycett K, Olsson CA. (2023). A study protocol for community implementation of a new mental health monitoring system spanning early childhood to young adulthood Longitudinal and Life Course Studies, 14(3), 446 - 465. DOI: 10.1332/175795921x16599509057666

Fransquet PD, Macdonald JA, Ryan J, Greenwood CJ, Olsson CA. (2023). Exploring perinatal biopsychosocial factors and epigenetic age in 1-year-old offspring. Epigenomics, 15(18), 927 - 939. DOI: 10.2217/epi-2023-0284

Jennifer EM, Evelyn ST, Christopher JG, Anna TB, Jessica EO, Bi-Xia K, Carol G, Delyse MH, Robert SM, Craig AO. (2023). Development and Validation of the Australian Preschool Attachment Scales Open Journal of Social Sciences, 11(11), 366 - 384. DOI: 10.4236/jss.2023.1111025

Kerr JA, Gillespie AN, O'Connor M, Deane C, Borschmann R, Dashti SG, Spry EA, Heerde JA, Möller H, Ivers R, Boden JM, Scott JG, Bucks RS, Glauert R, Kinner SA, Olsson CA, Patton GC. (2023). Intervention targets for reducing mortality between mid-adolescence and mid-adulthood: a protocol for a machine-learning facilitated systematic umbrella review. BMJ Open, 13(10), e068733. DOI: 10.1136/bmjopen-2022-068733

Letcher P, Greenwood CJ, Macdonald JA, McIntosh J, Spry EA, Hutchinson D, O'Connor M, Biden EJ, Painter FL, Olsson CM, Cleary J, Thomson KC, Olsson CA. (2023). Life course psychosocial precursors of parent mental health resilience during the COVID-19 pandemic: A three-decade prospective cohort study. J Affect Disord, 335, 473 - 483. DOI: 10.1016/j.jad.2023.05.039

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

Mygind L, Greenwood C, Letcher P, Mavoa S, Lycett K, Wang Y, Flensborg-Madsen T, Bentsen P, Macdonald JA, Thomson K, Hutchinson D, Olsson CA, Enticott PG. (2023). Is Neighborhood Nature an Ecological Precursor of Parenting Practices, Infant-Parent Bonding, and Infant Socioemotional Function? Environment and Behavior, 55(4), 278 - 306. DOI: 10.1177/00139165231182686

Olsson CM, Greenwood CJ, Letcher P, Tan E, Opie JE, Booth A, McIntosh J, Olsson CA. (2023). Adverse experiences in early intimate relationships and next‐generation infant–mother attachment: findings from the ATP Generation 3 Study Australian and New Zealand Journal of Family Therapy, 44(4), 537 - 548. DOI: 10.1002/anzf.1564

Olsson CM, Letcher P, Greenwood CJ, Moore K, Olsson CA. (2023). The Legacy of Mental Distress Following Physical Illness in Childhood: Findings From the Australian Temperament Project. J Pediatr Psychol, 48(1), 67 - 76. DOI: 10.1093/jpepsy/jsac064

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

O'Connor M, Greenwood CJ, Letcher P, Giallo R, Priest N, Goldfeld S, Hope S, Edwards B, Olsson CA. (2022). Inequalities in the distribution of COVID-19-related financial difficulties for Australian families with young children. Child Care Health Dev, 48(6), 1040 - 1051. DOI: 10.1111/cch.13010

O'Connor M, Guo S, Letcher P, Sanson A, Goldfeld S, Olsson CA. (2022). Developmental relationships between socio-economic disadvantage and mental health across the first 30 years of life. Longit Life Course Stud, 13(3), 432 - 453. DOI: 10.1332/175795921X16459587898770

Olsson CA, Letcher P, Greenwood CJ, McIntosh JE, Barker S, Olsson CM, Macdonald JA, Spry EA, Hutchinson D, Ryan J, Edwards B, McGee R, Patton GC, Sanson AV. (2022). The Australian Temperament Project Generation 3 study: a population-based multigenerational prospective cohort study of socioemotional health and development. BMJ Open, 12(9), e061854. DOI: 10.1136/bmjopen-2022-061854

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

Greenwood CJ, Youssef GJ, Fuller-Tyszkiewicz M, Letcher P, Macdonald JA, Hutchinson DM, Spry EA, Sanson A, Toumbourou JW, Biden EJ, Olsson CA. (2021). Psychosocial predictors of binge-drinking residual harm in adolescence and young adulthood: Findings from the Australian Temperament Project. Drug Alcohol Depend, 226, 108864. DOI: 10.1016/j.drugalcdep.2021.108864

Greenwood CJ, Youssef GJ, Letcher P, Spry EA, Thomson KC, Hagg LJ, Hutchinson DM, Macdonald JA, McIntosh J, Sanson A, Toumbourou JW, Olsson CA. (2021). Exploring a causal model in observational cohort data: The role of parents and peers in shaping substance use trajectories. Addict Behav, 112, 106597. DOI: 10.1016/j.addbeh.2020.106597

Linardon J, Greenwood CJ, Fuller-Tyszkiewicz M, Macdonald JA, Spry E, Hutchinson DM, Youssef GJ, Sanson A, Wertheim EH, McIntosh JE, Le Grange D, Letcher P, Olsson CA. (2021). Young adult mental health sequelae of eating and body image disturbances in adolescence. Int J Eat Disord, 54(9), 1680 - 1688. DOI: 10.1002/eat.23575

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

Merkouris SS, Greenwood CJ, Youssef GJ, Letcher P, Vassallo S, Dowling NA, Olsson CA. (2021). Adult Gambling Problems and Histories of Mental Health and Substance Use: Findings from a Prospective Multi-Wave Australian Cohort Study. J Clin Med, 10(7). DOI: 10.3390/jcm10071406

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

Spry EA, Moreno-Betancur M, Middleton M, Howard LM, Brown SJ, Molyneaux E, Greenwood CJ, Letcher P, Macdonald JA, Thomson KC, Biden EJ, Olsson CA, Patton GC. (2021). Preventing postnatal depression: a causal mediation analysis of a 20-year preconception cohort. Philos Trans R Soc Lond B Biol Sci, 376(1827), 20200028. DOI: 10.1098/rstb.2020.0028

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

Greenwood CJ, Youssef GJ, Letcher P, Macdonald JA, Hagg LJ, Sanson A, Mcintosh J, Hutchinson DM, Toumbourou JW, Fuller-Tyszkiewicz M, Olsson CA. (2020). A comparison of penalised regression methods for informing the selection of predictive markers. PLoS One, 15(11), e0242730. DOI: 10.1371/journal.pone.0242730

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

Spry E, Moreno-Betancur M, Becker D, Romaniuk H, Carlin JB, Molyneaux E, Howard LM, Ryan J, Letcher P, McIntosh J, Macdonald JA, Greenwood CJ, Thomson KC, McAnally H, Hancox R, Hutchinson DM, Youssef GJ, Olsson CA, Patton GC. (2020). Maternal mental health and infant emotional reactivity: a 20-year two-cohort study of preconception and perinatal exposures. Psychol Med, 50(5), 827 - 837. DOI: 10.1017/S0033291719000709

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

2019

Greenwood CJ, Youssef GJ, Betts KS, Letcher P, Mcintosh J, Spry E, Hutchinson DM, Macdonald JA, Hagg LJ, Sanson A, Toumbourou JW, Olsson CA. (2019). A comparison of longitudinal modelling approaches: Alcohol and cannabis use from adolescence to young adulthood. Drug Alcohol Depend, 201, 58 - 64. DOI: 10.1016/j.drugalcdep.2019.05.001

Hutchinson D, Youssef GJ, Buhagiar A, Teague S, Macdonald JA, Letcher P, Greenwood C, McIntosh J, Toumbourou JW, Hallam BWT, Skouteris H, Sanson A, Olsson CA. (2019). Adolescent Care-Orientation and Positive Development in Young Adulthood. J Adolesc Health, 64(1), 63 - 69. DOI: 10.1016/j.jadohealth.2018.07.024

O'Connor M, Chong S, Hutchinson D, Sanson A, McIntosh J, Olsson CA, Goldfeld S. (2019). Socioeconomic Disadvantage in Infancy and Academic and Self-Regulation Outcomes. Pediatrics, 143(5). DOI: 10.1542/peds.2018-2640

2018

Betts KS, Alati R, Baker P, Letcher P, Hutchinson D, Youssef G, Olsson CA. (2018). The natural history of risky drinking and associated harms from adolescence to young adulthood: findings from the Australian Temperament Project. Psychol Med, 48(1), 23 - 32. DOI: 10.1017/S0033291717000654

Teague S, Youssef GJ, Macdonald JA, Sciberras E, Shatte A, Fuller-Tyszkiewicz M, Greenwood C, McIntosh J, Olsson CA, Hutchinson D, SEED Lifecourse Sciences Theme . (2018). Retention strategies in longitudinal cohort studies: a systematic review and meta-analysis. BMC Med Res Methodol, 18(1), 151. DOI: 10.1186/s12874-018-0586-7

2017

Rozenblat V, Ryan J, Wertheim E, King R, Olsson CA, Letcher P, Krug I. (2017). Relationships Between Self-Reported and Observed Parenting Behaviour, Adolescent Disordered Eating Attitudes and Behaviours, and the 5-HTTLPR Polymorphism: Data From the Australian Temperament Project. Eur Eat Disord Rev, 25(5), 381 - 388. DOI: 10.1002/erv.2530

2016

Betts KS, Baker P, Alati R, McIntosh JE, Macdonald JA, Letcher P, Olsson CA. (2016). The natural history of internalizing behaviours from adolescence to emerging adulthood: findings from the Australian Temperament Project. Psychol Med, 46(13), 2815 - 2827. DOI: 10.1017/S0033291716001495

Krug I, King RM, Youssef GJ, Sorabji A, Wertheim EH, Le Grange D, Hughes EK, Letcher P, Olsson CA. (2016). The effect of low parental warmth and low monitoring on disordered eating in mid-adolescence: Findings from the Australian Temperament Project. Appetite, 105, 232 - 241. DOI: 10.1016/j.appet.2016.05.015

2015

Silins E, Fergusson DM, Patton GC, Horwood LJ, Olsson CA, Hutchinson DM, Degenhardt L, Tait RJ, Borschmann R, Coffey C, Toumbourou JW, Najman JM, Mattick RP, Cannabis Cohorts Research Consortium . (2015). Adolescent substance use and educational attainment: An integrative data analysis comparing cannabis and alcohol from three Australasian cohorts. Drug Alcohol Depend, 156, 90 - 96. DOI: 10.1016/j.drugalcdep.2015.08.034

2014

Jarosz E, Krug I, Letcher P, Olsson C. (2014). A longitudinal study of disordered eating in Australian adolescents: modelling psychosocial and individual risk factors Journal of Eating Disorders, 2(Suppl 1), p1. DOI: 10.1186/2050-2974-2-s1-p1

Krug I, Sorabji A, King R, Letcher P, Olsson C. (2014). Does low parental warmth and monitoring predict disordered eating in Australian female and male adolescents? Journal of Eating Disorders, 2(Suppl 1), o29. DOI: 10.1186/2050-2974-2-s1-o29

Silins E, Horwood LJ, Patton GC, Fergusson DM, Olsson CA, Hutchinson DM, Spry E, Toumbourou JW, Degenhardt L, Swift W, Coffey C, Tait RJ, Letcher P, Copeland J, Mattick RP, Cannabis Cohorts Research Consortium . (2014). Young adult sequelae of adolescent cannabis use: an integrative analysis. Lancet Psychiatry, 1(4), 286 - 293. DOI: 10.1016/S2215-0366(14)70307-4

2012

Hawkins MT, Villagonzalo K-A, Sanson AV, Toumbourou JW, Letcher P, Olsson CA. (2012). Associations Between Positive Development in Late Adolescence and Social, Health, and Behavioral Outcomes in Young Adulthood Journal of Adult Development, 19(2), 88 - 99. DOI: 10.1007/s10804-011-9137-8

Horwood LJ, Fergusson DM, Coffey C, Patton GC, Tait R, Smart D, Letcher P, Silins E, Hutchinson DM. (2012). Cannabis and depression: an integrative data analysis of four Australasian cohorts. Drug Alcohol Depend, 126(3), 369 - 378. DOI: 10.1016/j.drugalcdep.2012.06.002

Letcher P, Sanson A, Smart D, Toumbourou JW. (2012). Precursors and correlates of anxiety trajectories from late childhood to late adolescence. J Clin Child Adolesc Psychol, 41(4), 417 - 432. DOI: 10.1080/15374416.2012.680189

O'Connor M, Sanson A, Hawkins MT, Olsson C, Frydenberg E, Toumbourou JW, Letcher P. (2012). The relationship between positive development and psychopathology during the transition to adulthood: a person-centred approach. J Adolesc, 35(3), 701 - 712. DOI: 10.1016/j.adolescence.2011.10.006

2011

Hawkins MT, Letcher P, Sanson A, O'Connor M, Toumbourou JW, Olsson C. (2011). Stability and change in positive development during young adulthood. J Youth Adolesc, 40(11), 1436 - 1452. DOI: 10.1007/s10964-011-9635-9

O'connor M, Hawkins MT, Toumbourou JW, Sanson A, Letcher P, Olsson CA. (2011). The relationship between social capital and depression during the transition to adulthood Australian Journal of Psychology, 63(1), 26 - 35. DOI: 10.1111/j.1742-9536.2011.00004.x

O'Connor M, Sanson A, Hawkins MT, Letcher P, Toumbourou JW, Smart D, Vassallo S, Olsson CA. (2011). Predictors of positive development in emerging adulthood. J Youth Adolesc, 40(7), 860 - 874. DOI: 10.1007/s10964-010-9593-7

O'Connor M, Sanson A, Hawkins MT, Toumbourou JW, Letcher P, Frydenberg E. (2011). Differentiating three conceptualisations of the relationship between positive development and psychopathology during the transition to adulthood. J Adolesc, 34(3), 475 - 484. DOI: 10.1016/j.adolescence.2010.06.005

Toumbourou JW, Williams I, Letcher P, Sanson A, Smart D. (2011). Developmental trajectories of internalising behaviour in the prediction of adolescent depressive symptoms Australian Journal of Psychology, 63(4), 214 - 223. DOI: 10.1111/j.1742-9536.2011.00023.x

2009

Hawkins MT, Letcher P, Sanson A, Smart D, Toumbourou JW. (2009). Positive development in emerging adulthood Australian Journal of Psychology, 61(2), 89 - 99. DOI: 10.1080/00049530802001346

2004

Stockwell T, Toumbourou JW, Letcher P, Smart D, Sanson A, Bond L. (2004). Risk and protection factors for different intensities of adolescent substance use: when does the Prevention Paradox apply? Drug Alcohol Rev, 23(1), 67 - 77. DOI: 10.1080/09595230410001645565

0

Allen K-A, Greenwood CJ, Berger E, Reupert A, Wurf G, Rajendran N, Warton W, O’Connor M, Sanson A, Olsson CA, Letcher P. (). Adolescent School Belonging and Substance Use in Young Adulthood: Findings from a Multi-wave Prospective Cohort Study International Journal of Mental Health and Addiction, 1 - 18. DOI: 10.1007/s11469-024-01427-5

Spry E, Aarsman S, Youssef GJ, patton G, Macdonald JA, Sanson A, Thomson K, Hutchinson D, Letcher P, Olsson C. (). Maternal and paternal depression and anxiety and offspring infant negative affectivity: A systematic review and meta-analysis . DOI: 10.31234/osf.io/y9s7w

Spry E, Moreno-Betancur M, Howard L, Brown S, Greenwood C, Letcher P, Macdonald JA, Biden E, Olsson C, patton G. (). Spry_Preventing postpartum depression_Preprint . DOI: 10.31234/osf.io/2cjd3

2024

2023

Booth AT, Greenwood CJ, Youssef GJ, McIntosh JE, Nguyen T, Letcher P, Edwards B, Hutchinson DM, Sanson A, Olsson CA, Macdonald JA. (2023). Factor structure of the Mini-Maternal Behavior Q-Sort and associations with infant attachment: Informing precision in research and intervention. Infancy, 28(2), 454 - 463. DOI: 10.1111/infa.12513

2022

Spry EA, Letcher P, Patton GC, Sanson AV, Olsson CA. (2022). The developmental origins of stress reactivity: an intergenerational life-course perspective Current Opinion in Behavioral Sciences, 43, 187 - 192. DOI: 10.1016/j.cobeha.2021.10.005

2021

2020

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

0

Olsson C, Letcher P, Greenwood C, Mcintosh J, Barker S, Olsson C, Macdonald JA, Spry E, Hutchinson D, Ryan J, Edwards B, McGee R, patton G, Sanson A. (). Cohort Profile: The Australian Temperament Project Generation 3 Study: A population-based multigenerational prospective cohort study of socio-emotional health and development . DOI: 10.31219/osf.io/hp4tj

Spry E, Moreno-Betancur M, Howard L, Brown S, Greenwood C, Letcher P, Macdonald JA, Biden E, Olsson C, patton G. (). Spry_Preventing postpartum depression_Preprint . DOI: 10.31234/osf.io/2cjd3

ATP
ATPG3

Study Contacts
Principal investigator/s	Craig Olsson
Project manager	Dr Lisa Mundy Ms Elissa Phillips Dr Kate Stephens
Study Contact	Phone: +613 9345 4129 Email: [email protected] Postal address: Australian Temperament Project Department of Paediatrics University of Melbourne Level 2 West Royal Children’s Hospital 50 Flemington Road Parkville VIC 3052 Australia

Study Contacts
Principal investigator/s	Craig Olsson
Project manager	Dr Lisa Mundy Ms Elissa Phillips Dr Kate Stephens
Study Contact	Phone: +613 9345 4129 Email: [email protected] Postal address: Australian Temperament Project Department of Paediatrics University of Melbourne Level 2 West Royal Children’s Hospital 50 Flemington Road Parkville VIC 3052 Australia