Preconception Predictors of Early Childhood Social and Emotional Development: A 30-Year Longitudinal Study of Grandparents, Parents and Children

Childhood sexual abuse and maternal social and financial resources, mental health, and parenting outcomes in pregnancy and early parenthood: a multicohort observational study

Elizabeth A Spry, Stephanie R Aarsman, S Ghazaleh Dashti, Helena McAnally, Christopher J Greenwood, Hayley Guiney, Raquel Catalao, Jay Belsky, Jacqui A Macdonald, Primrose Letcher, Delyse M Hutchinson, Kimberly C Thomson, Ebony J Biden, Jennifer McIntosh, Louise M Howard, Stephanie J Brown, Jessica A Kerr, George C Patton, Reremoana Theodore, Robert J Hancox

2026-04-01

Background Up to one in five women experience childhood sexual abuse (CSA) globally. Pregnancy and early parenthood might represen..

Adolescent School Belonging and Substance Use in Young Adulthood: Findings from a Multi-wave Prospective Cohort Study

KA Allen, CJ Greenwood, E Berger, A Reupert, G Wurf, N Rajendran, W Warton, M O’Connor, A Sanson, CA Olsson, P Letcher

2026-02-01

This study explored the longitudinal associations between multiple dimensions of school belonging during adolescence and substance..

Amphetamine use and mental health difficulties across adolescence and young adulthood: An integrative data analysis of four Australasian cohort studies

CJ Greenwood, J Foulds, R McKetin, SR Aarsman, D Hutchinson, J Kerr, JA Heerde, JW Toumbourou, JM Boden, T Slade, Y Bonomo, P Letcher, CA Olsson

2025-08-01

Background and aims: The use of amphetamines (including amphetamine and methamphetamine) has been consistently associated with men..

Illicit Substance Use and Harm in Young Adulthood: the Role of Substance Use in Close Relationships and Individual Social Skills

CJ Greenwood, P Letcher, JA Macdonald, DM Hutchinson, GJ Youssef, JW Toumbourou, E Spry, A Sanson, J Cleary, CA Olsson

2025-04-01

To examine illicit substance use across young adulthood and explore the extent to which social skills moderate the relationship be..

Pre-pandemic predictors of parental substance use during COVID-19

CJ Greenwood, P Letcher, DM Hutchinson, JA Macdonald, J Grigg, JM Boden, JW Toumbourou, CA Olsson

2025-01-01

Aims: To examine pre-pandemic predictors of parent substance use during COVID-19 in Australia, where some of the longest periods o..

The role of childhood illness in shaping relationships through to young adulthood

CM Olsson, CJ Greenwood, SR Aarsman, P Letcher, L Mundy, P Azzopardi, CA Olsson

2025-01-01

Objective: To explore how those with a physical illness in childhood are managing in relationships across childhood to young adult..

Life course predictors of child emotional distress during the COVID-19 pandemic: Findings from a prospective intergenerational cohort study

P Letcher, CJ Greenwood, JA Macdonald, J Ryan, M O'Connor, KC Thomson, EJ Biden, F Painter, CM Olsson, B Edwards, J McIntosh, EA Spry, D Hutchinson, J Cleary, T Slade, CA Olsson

2024-12-01

Background: We examine precursors of child emotional distress during the COVID-19 pandemic in a prospective intergenerational Aust..

Maternal perinatal social support and infant social-emotional problems and competencies: a longitudinal cross-cohort replication study

M Schuijers, CJ Greenwood, JE McIntosh, G Youssef, P Letcher, JA Macdonald, E Spry, G Le Bas, S Teague, E Biden, E Elliott, S Allsop, L Burns, CA Olsson, DM Hutchinson

2024-12-01

Purpose: Maternal perinatal social support is theorised to promote offspring social-emotional development, yet few studies have pr..

The Monitoring Illicit Substance Use Consortium: A Study Protocol

CJ Greenwood, P Letcher, E Laurance, JM Boden, J Foulds, EA Spry, JA Kerr, JW Toumbourou, JA Heerde, C Nolan, Y Bonomo, DM Hutchinson, T Slade, SR Aarsman, CA Olsson

2024-12-01

Objective: The global impact of substance use, including cannabis, amphetamine, cocaine, ecstasy, hallucinogens, and opioids, is i..

Eating and Body Image Disturbances in Adolescence and Substance Use Throughout Young Adulthood: Findings from the Australian Temperament Project

J Linardon, CJ Greenwood, JA Macdonald, EA Spry, EH Wertheim, D Le Grange, P Letcher, CA Olsson

2024-10-01

We investigated whether eating and body image disturbances in mid-adolescence were associated with substance use in young adulthoo..

Adolescent School Belonging and Mental Health Outcomes in Young Adulthood: Findings from a Multi-wave Prospective Cohort Study

Kelly-Ann Allen, Christopher J Greenwood, Emily Berger, Lefteris Patlamazoglou, Andrea Reupert, Gerald Wurf, Fiona May, Meredith O'Connor, Ann Sanson, Craig A Olsson, Primrose Letcher

2024-03-01

School belonging, sometimes referred to as school belonging or school connectedness, involves dimensions like positive affect towa..

Infant and preschool attachment, continuity and relationship to caregiving sensitivity: findings from a new population-based Australian cohort

JE McIntosh, J Opie, CJ Greenwood, A Booth, E Tan, F Painter, M Messer, JA Macdonald, P Letcher, CA Olsson

2024-01-01

Background: Here, we report new prevalence and temporal stability data for child attachment and parental caregiving behaviour, fro..

Exploring perinatal biopsychosocial factors and epigenetic age in 1-year-old offspring

Peter D Fransquet, Jacqui A MacDonald, Joanne Ryan, Christopher J Greenwood, Craig A Olsson

2023-09-01

Background: Little is known about the determinants of epigenetic aging in pediatric populations. Methods: Epigenetic age was estim..

Life course psychosocial precursors of parent mental health resilience during the COVID-19 pandemic: A three-decade prospective cohort study

P Letcher, CJ Greenwood, JA Macdonald, J McIntosh, EA Spry, D Hutchinson, M O'Connor, EJ Biden, FL Painter, CM Olsson, J Cleary, KC Thomson, CA Olsson

2023-08-15

Background: There has been widespread interest in the implications of COVID-19 containment measures on the mental health of parent..

Is Neighborhood Nature an Ecological Precursor of Parenting Practices, Infant-Parent Bonding, and Infant Socioemotional Function?

L Mygind, C Greenwood, P Letcher, S Mavoa, K Lycett, Y Wang, T Flensborg-Madsen, P Bentsen, JA Macdonald, K Thomson, D Hutchinson, CA Olsson, PG Enticott

2023-05-01

Nurturing relationships are crucial for adaptive child development. The objectives of the study were to investigate whether nature..

Continuities in maternal substance use from early adolescence to parenthood: findings from the intergenerational cohort consortium

Kimberly C Thomson, Christopher J Greenwood, Primrose Letcher, Elizabeth A Spry, Jacqui A Macdonald, Helena M McAnally, Lindsey A Hines, George J Youssef, Jennifer E McIntosh, Delyse Hutchinson, Robert J Hancox, George C Patton, Craig A Olsson

2023-04-08

Background This study assessed the extent to which women's preconception binge drinking, tobacco use and cannabis use, reported pr..

Factor structure of the Mini-Maternal Behavior Q-Sort and associations with infant attachment: Informing precision in research and intervention

AT Booth, CJ Greenwood, GJ Youssef, JE McIntosh, T Nguyen, P Letcher, B Edwards, DM Hutchinson, A Sanson, CA Olsson, JA Macdonald

2023-03-01

We examined the factor structure of parental sensitivity to infants as assessed by the Mini-Maternal Behavior Q-Sort (Mini-MBQS), ..

Parental history of positive development and child behavior in next generation offspring: A two-cohort prospective intergenerational study

P Letcher, CJ Greenwood, H McAnally, J Belsky, JA Macdonald, EA Spry, KC Thomson, M O'Connor, J Sligo, G Youssef, JE McIntosh, E Iosua, D Hutchinson, J Cleary, AV Sanson, GC Patton, RJ Hancox, CA Olsson

2023-01-01

This study examined whether positive development (PD) in adolescence and young adulthood predicts offspring behavior in two Austra..

Parenting Orientations in Young Adulthood: Predicting Timing of Parenthood and Quality of Postpartum Caregiving

JA Macdonald, S Collins, CJ Greenwood, GJ Youssef, KC Thomson, P Letcher, EA Spry, CA Olsson

2022-11-28

Most but not all adults become parents, yet it remains unclear which characteristics indicate an orientation toward parenting. The..

Inequalities in the distribution of COVID-19-related financial difficulties for Australian families with young children

M O'Connor, CJ Greenwood, P Letcher, R Giallo, N Priest, S Goldfeld, S Hope, B Edwards, CA Olsson

2022-11-01

Background: We examine (1) the frequency of financial difficulties in Australian families with young children (0–8 years) in the e..

The Australian Temperament Project Generation 3 study: a population-based multigenerational prospective cohort study of socioemotional health and development

CA Olsson, P Letcher, CJ Greenwood, JE McIntosh, S Barker, CM Olsson, JA MacDonald, EA Spry, D Hutchinson, J Ryan, B Edwards, R McGee, GC Patton, AV Sanson

2022-09-16

Purpose The Australian Temperament Project Generation 3 Study (ATPG3) was established to examine the extent to which offspring soc..

From adolescence to parenthood: a multi-decade study of preconception mental health problems and postpartum parent–infant bonds

JA Macdonald, C Greenwood, P Letcher, EA Spry, HM McAnally, K Thomson, D Hutchinson, GJ Youssef, J McIntosh, RJ Hancox, GC Patton, CA Olsson

2022-03-01

Purpose: To examine associations between anxiety and depressive symptoms across adolescence and young adulthood with subsequent ma..

Psychosocial predictors of binge-drinking residual harm in adolescence and young adulthood: Findings from the Australian Temperament Project

CJ Greenwood, GJ Youssef, M Fuller-Tyszkiewicz, P Letcher, JA Macdonald, DM Hutchinson, EA Spry, A Sanson, JW Toumbourou, EJ Biden, CA Olsson

2021-09-01

Aims: We examine the extent to which adolescent and young adult psychosocial factors are associated with variation in the experien..

Young adult mental health sequelae of eating and body image disturbances in adolescence

J Linardon, CJ Greenwood, M Fuller-Tyszkiewicz, JA Macdonald, E Spry, DM Hutchinson, GJ Youssef, A Sanson, EH Wertheim, JE McIntosh, D Le Grange, P Letcher, CA Olsson

2021-09-01

Objective: There has been interest in the antecedents and mental health impacts of eating and body image disturbances in adolescen..

Preparing for Future Adversities: Lessons From the COVID-19 Pandemic in Australia for Promoting Relational Resilience in Families

EJ Biden, CJ Greenwood, JA Macdonald, EA Spry, P Letcher, D Hutchinson, GJ Youssef, JE McIntosh, CA Olsson

2021-08-04

Background: The COVID-19 pandemic has placed considerable pressure on families, testing the quality of relationships and the stren..

Preconception depression and anxiety symptoms and maternal-infant bonding: a 20-year intergenerational cohort study

CA Olsson, EA Spry, Y Alway, M Moreno-Betancur, G Youssef, C Greenwood, P Letcher, JA Macdonald, J McIntosh, D Hutchinson, GC Patton

2021-06-01

Early maternal-infant bonding problems are often forerunners of later emotional and behavioural difficulties. Interventions typica..

Parent and Peer Attachments in Adolescence and Paternal Postpartum Mental Health: Findings From the ATP Generation 3 Study

JA Macdonald, CJ Greenwood, P Letcher, EA Spry, K Mansour, JE McIntosh, KC Thomson, C Deane, EJ Biden, B Edwards, D Hutchinson, J Cleary, JW Toumbourou, AV Sanson, CA Olsson

2021-05-28

Background: When adolescent boys experience close, secure relationships with their parents and peers, the implications are potenti..

Exploring a causal model in observational cohort data: The role of parents and peers in shaping substance use trajectories

CJ Greenwood, GJ Youssef, P Letcher, EA Spry, KC Thomson, LJ Hagg, DM Hutchinson, JA Macdonald, J McIntosh, A Sanson, JW Toumbourou, CA Olsson

2021-01-01

Aims: To explore the process of applying counterfactual thinking in examining causal determinants of substance use trajectories in..

A comparison of penalised regression methods for informing the selection of predictive markers

CJ Greenwood, GJ Youssef, P Letcher, JA Macdonald, LJ Hagg, A Sanson, J McIntosh, DM Hutchinson, JW Toumbourou, M Fuller-Tyszkiewicz, CA Olsson

2020-11-01

Background Penalised regression methods are a useful atheoretical approach for both developing predictive models and selecting key..

Adolescent and young adult mental health problems and infant offspring behavior: Findings from a prospective intergenerational cohort study

P Letcher, CJ Greenwood, H Romaniuk, E Spry, JA Macdonald, H McAnally, KC Thomson, G Youssef, D Hutchinson, J McIntosh, A Sanson, J Ryan, B Edwards, J Sligo, RJ Hancox, GC Patton, CA Olsson

2020-07-01

Background: Parental depression and anxiety have been consistently linked to offspring behavior problems across childhood. However..

Pre-conception self-harm, maternal mental health and mother-infant bonding problems: A 20-year prospective cohort study

R Borschmann, E Molyneaux, E Spry, P Moran, LM Howard, JA Macdonald, SJ Brown, M Moreno-Betancur, CA Olsson, GC Patton

2019-12-01

Background Self-harm in young people is associated with later problems in social and emotional development. However, it is unknown..

A comparison of longitudinal modelling approaches: Alcohol and cannabis use from adolescence to young adulthood

CJ Greenwood, GJ Youssef, KS Betts, P Letcher, J Mcintosh, E Spry, DM Hutchinson, JA Macdonald, LJ Hagg, A Sanson, JW Toumbourou, CA Olsson

2019-08-01

Background: Modelling trajectories of substance use over time is complex and requires judicious choices from a number of modelling..

Socioeconomic disadvantage in infancy and academic and self-regulation outcomes

M O’Connor, S Chong, D Hutchinson, A Sanson, J McIntosh, CA Olsson, S Goldfeld

2019-05-01

OBJECTIVES: A comprehensive understanding of how timing of exposure to disadvantage affects long-term developmental risk is needed..

Mother–Infant and Partner–Infant Emotional Availability at 12 Months of Age: Findings From an Australian Longitudinal Study

L Rossen, RP Mattick, J Wilson, L Burns, JA Macdonald, C Olsson, S Allsop, EJ Elliott, S Jacobs, C McCormack, D Hutchinson

2018-11-01

Emotional availability (EA) is a focal indicator of parent–infant relationship quality and plays a key role in determining healthy..

Cohort profile: The Triple B Pregnancy Cohort Study: A longitudinal study of the relationship between alcohol, tobacco and other substance use during pregnancy and the health and well-being of Australian children and families

D Hutchinson, J Wilson, S Allsop, E Elliott, J Najman, L Burns, A Bartu, S Jacobs, I Honan, C McCormack, L Rossen, H Fiedler, C Stone, S Khor, J Ryan, GJ Youssef, CA Olsson, RP Mattick, J Cassar, A Popescu

2018-02-01

Collaborative meta-Analysis finds no evidence of a strong interaction between stress and 5-HTTLPR genotype contributing to the development of depression

RC Culverhouse, NL Saccone, AC Horton, Y Ma, KJ Anstey, T Banaschewski, M Burmeister, S Cohen-Woods, B Etain, HL Fisher, N Goldman, S Guillaume, J Horwood, G Juhasz, KJ Lester, L Mandelli, CM Middeldorp, E Olié, S Villafuerte, TM Air

2018-01-01

The hypothesis that the S allele of the 5-HTTLPR serotonin transporter promoter region is associated with increased risk of depres..

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

V Rozenblat, J Ryan, E Wertheim, R King, CA Olsson, P Letcher, I Krug

2017-09-01

This study examined whether self-reported and observationally measured parental behaviours were associated with disordered eating,..

Investigating direct links between depression, emotional control, and physical punishment with adolescent drive for thinness and bulimic behaviors, including possible moderation by the serotonin transporter 5-HTTLPR polymorphism

V Rozenblat, J Ryan, EH Wertheim, R King, CA Olsson, I Krug

2017-08-09

Objectives: To examine the relationship between psychological and social factors (depression, emotional control, sexual abuse, and..

Does Positive Mental Health in Adolescence Longitudinally Predict Healthy Transitions in Young Adulthood?

M O’Connor, AV Sanson, JW Toumbourou, J Norrish, CA Olsson

2017-02-01

The present study examined the longer-term implications of adolescent positive mental health for successful young adult transition..

The prevalence, age distribution and comorbidity of personality disorders in Australian women

SE Quirk, M Berk, JA Pasco, SL Brennan-Olsen, AM Chanen, H Koivumaa-Honkanen, LM Burke, HJ Jackson, C Hulbert, C A Olsson, P Moran, AL Stuart, LJ Williams

2017-02-01

Objective: We aimed to describe the prevalence and age distribution of personality disorders and their comorbidity with other psyc..

Perinatal maternal alcohol consumption and methylation of the dopamine receptor DRD4 in the offspring: The Triple B study

PD Fransquet, D Hutchinson, CA Olsson, J Wilson, S Allsop, J Najman, E Elliott, RP Mattick, R Saffery, J Ryan

2016-12-01

Maternal alcohol use during the perinatal period is a major public health issue, the higher ends of which are associated with foet..

The natural history of internalizing behaviours from adolescence to emerging adulthood: Findings from the Australian Temperament Project

KS Betts, P Baker, R Alati, JE McIntosh, JA Macdonald, P Letcher, CA Olsson

2016-10-01

Background The aims of the study were to describe the patterning and persistence of anxiety and depressive symptoms from adolescen..

Predictors of postnatal mother-infant bonding: the role of antenatal bonding, maternal substance use and mental health

L Rossen, D Hutchinson, J Wilson, L Burns, C A Olsson, S Allsop, E J Elliott, S Jacobs, JA Macdonald, RP Mattick

2016-08-01

The emotional bond that a mother feels towards her baby is critical to social, emotional and cognitive development. Maternal healt..

Associations between dehydroepiandrosterone (DHEA) levels, pituitary volume, and social anxiety in children

CR Murray, JG Simmons, NB Allen, ML Byrne, LK Mundy, ML Seal, GC Patton, CA Olsson, S Whittle

2016-02-01

Early timing of adrenarche, associated with relatively high levels of dehydroepiandrosterone (DHEA) and its sulphate (DHEA-S) in c..

Drinking patterns of adolescents who develop alcohol use disorders: Results from the Victorian Adolescent Health Cohort Study

CA Olsson, H Romaniuk, J Salinger, PK Staiger, Y Bonomo, C Hulbert, GC Patton

2016-01-01

Objective: We identify drinking styles that place teens at greatest risk of later alcohol use disorders (AUD). Design: Population-..

Adolescent substance use and educational attainment: An integrative data analysis comparing cannabis and alcohol from three Australasian cohorts

E Silins, DM Fergusson, GC Patton, LJ Horwood, CA Olsson, DM Hutchinson, L Degenhardt, RJ Tait, R Borschmann, C Coffey, JW Toumbourou, JM Najman, RP Mattick, S Allsop, R Bruno, J Copeland, R Hayatbakhsh, P Letcher, M Plotnikova, SR Skinner

2015-11-01

Background: The relative contributions of cannabis and alcohol use to educational outcomes are unclear. We examined the extent to ..