Stephen R Zubrick

• PhD
• Professor Emeritus at The University of Western Australia

Background Digital technology is ubiquitous in the lives of many children and parents. To better understand any influence of technology use by infants, and mothers, on child development, technology use should be considered within the broader family system context in which children develop. This study aimed to investigate associations between infant...

This study explores the allocation of time, particularly to sleep, among children and adolescents in response to daily daylight variation. Utilising a dataset of over 50,000 time-use diaries from two Australian cohorts spanning 16 years and employing an individual fixed effects estimator, we uncover a substantial causal impact of daily daylight dur...

Purpose Despite the volume of accumulating knowledge from prospective Aboriginal cohort studies, longitudinal data describing developmental trajectories in health and well-being is limited. The linkage of child and carer cohorts from a historical cross-sectional survey with longitudinal health-service and social-service administrative data has crea...

This study explores the allocation of time, particularly to sleep, among children and adolescents in response to daily solar cycles. Utilizing a dataset of over 50,000 time-use diaries from two Australian cohorts spanning 16 years and employing an individual fixed effects estimator, we uncover a significant correlation between daylight duration and...

Children and adolescents spend more than one-third of their time sleeping. Yet, we know little about the causal impact of sleeping on their development. This paper is the first to exploit variation in local daily daylight duration measured on pre-determined diary dates across the same individuals through time as an instrument in an individual fixed...

This study explores the allocation of time, particularly to sleep, among children and adolescents in response to daily solar cycles. Utilizing a dataset of over 50,000 time-use diaries from two Australian cohorts spanning 16 years and employing an individual fixed effects estimator, we uncover a significant correlation between daylight duration and...

This paper provides the first causal evidence on the impact of retirement on housing choices. Our empirical strategy exploits the discontinuity in the eligibility ages for state pension as an instrument for the endogenous retirement decision and controls for time-invariant individual characteristics. The results show that retirement leads to a stat...

The reciprocal relationship between psychiatric and substance use disorders is well-known, yet it remains largely unknown whether mental health morbidity causally leads to addictive behaviours. This paper utilises a fixed effects instrumental variables model, which is identified by time-varying sources of plausibly exogenous variations in mental he...

The reciprocal relationship between psychiatric and substance use disorders is well-known, yet it remains largely unknown whether mental health morbidity causally leads to addictive behaviours. This paper utilises a fixed effects instrumental variables model, which is identified by time-varying sources of plausibly exogenous variations in mental he...

As families increase their use of mobile touch screen devices (smartphones and tablet computers), there is potential for this use to influence parent-child interactions required to form a secure attachment during infancy, and thus future child developmental outcomes. Thirty families of infants (aged 9-15 months) were interviewed to explore how pare...

Purpose: Previous studies showed that unfavourable weather conditions discourage physical activity. However, it remains unclear whether unfavourable weather conditions have a differential impact on physical activity in children compared with adults. We aim to explore the differential impact of weather on time allocation to physical activity and sl...

Understanding the drivers of student dropout from higher education has been a policy concern for several decades. However, the contributing role of certain factors—including student mental health—remains poorly understood. Furthermore, existing studies linking student mental health and university dropout are limited in both methodology and scope—fo...

The media plays a powerful role in shaping health-related attitudes and behaviours. We investigated media reports about children’s independent mobility (CIM) and associations with parental attitudes towards CIM. CIM-related media reports (newspaper, online, television) during a three-month period were extracted from two databases. Concurrent parent...

In this chapter, we describe the life course approach and explain key concepts and principles. We also review variations in life course theory across disciplines including differences in terminology and understanding of core elements of life course theory. We outline why the life course approach is useful for examining intergenerational transmissio...

In this chapter we provide a brief summary of the key themes of the book, identify emerging directions and challenges in life course theory and data designs and highlight some policy challenges for researchers going forward.

In this chapter we use rich longitudinal data to examine the typical growth of vocabulary in children as they age from 4 years onwards. Vocabulary is a robust indicator of language development and of early cognitive growth. The data demonstrate the surprising variability among children of similar ages in their early cognitive growth. This variabili...

Findings from longitudinal research, globally, repeatedly emphasise the importance of a taking an early life course approach to mental health promotion; one that invests in the formative years of development, from early childhood to young adulthood, just prior to the transition to parenthood for most. While population monitoring systems have been d...

This paper studies the extent to which sleep duration causally affects health, cognitive and noncognitive development in children and adolescents. Using over 50 thousand time use diaries from two cohorts of Australian children spanning over 16 years, we first document that children sleep significantly less on days with longer daylight duration, par...

The majority of children acquire language effortlessly but approximately 10% of all children find it difficult especially in the early or preschool years with consequences for many aspects of their subsequent development and experience: literacy, social skills, educational qualifications, mental health and employment. With contributions from an int...

A commonly suggested strategy for addressing bullying is for victims to seek help from a trusted person. Despite this recommendation, there are a group of adolescent victims who choose not to seek help. This study aimed to identify factors associated with not seeking help among adolescents who experienced bullying victimisation. A sub-sample of you...

Using over 50 thousand time-use diaries from two cohorts of children, we document significant gender differences in time allocation in the first 16 years in life. Relative to males, females spend more time on personal care, chores and educational activities and less time on physical and media related activities. These gender gaps in time allocation...

The relationship between physical activity and child health and development is well-documented, yet the extant literature provides limited causal insight into the amount of physical activity considered optimal for improving any given health or developmental outcome. This paper exploits exogenous variations in local weather conditions observed acros...

The relationship between physical activity and child health and development is well-documented, yet the extant literature provides limited causal insight into the amount of physical activity considered optimal for improving any given health or developmental outcome. This paper exploits exogenous variations in local weather conditions observed acros...

The potential for human–computer interaction to have a substantial impact on adults is well documented. However, its potential importance prior to birth has rarely been reported. Parental use of smartphones and tablet computers could influence the relationship between parent and baby during pregnancy (prenatal attachment) and thus child development...

There is a large volume of research on the persistence of advantage and disadvantage across generations. Intergenerational studies typically address family resources as independent factors, which ignores how risks cluster together and accumulate over time. Using data from the Longitudinal Study of Australian Children, we conducted two latent class...

Using over 50 thousand time-use diaries from two cohorts of children, we document significant gender differences in time allocation in the first 16 years in life. Relative to males, females spend more time on personal care, chores and educational activities and less time on physical and media related activities. These gender gaps in time allocation...

Background In Australia, the health and education sectors provide universal early childhood services for the same population of children. Therefore, there is a strong imperative to view service use and outcomes through a cross-sectoral lens to better understand and address the service needs of young children and their families. Objectives To invest...

Background In Australia, the health and education sectors provide universal early childhood services for the same population of children. Therefore, there is a strong imperative to view service use and outcomes through a cross-sectoral lens to better understand and address the service needs of young children and their families. Objectives To inves...

This paper examines whether adolescents can be reliably categorized into subgroups based on their patterns of anxiety levels over time and whether low levels of social support from parents, peers, and their school, and high levels of peer victimization, predict a pattern of increasing anxiety. Participants were 3392 youth from the Longitudinal Stud...

Background The impacts of the COVID-19 pandemic have been vast and are not limited to physical health. Many adolescents have experienced disruptions to daily life, including changes in their school routine and family’s financial or emotional security, potentially impacting their emotional wellbeing. In low COVID-19 prevalence settings, the impact o...

School readiness is a construct used by educators and policy makers to describe a range of abilities that are beneficial for children transitioning to school. The association of socioeconomic disadvantage with developmental vulnerability when children start school is well established. Parents play a crucial role in supporting children’s transition...

This study explores how the first wave of the COVID-19 pandemic influenced family routines, relationships and technology use (smartphones and tablet computers) among families with infants. Infancy is known to be an important period for attachment security and future child development, and a time of being susceptible to changes within and outside of...

This study assessed if the association between mental disorders and higher student absences varies across different profiles of risk factors, and estimated the proportion of student absences associated with mental disorders. Data included responses from a nationally representative Australian survey of child and adolescent mental health (Young Minds...

IntroductionAustralians who are Not in Employment, Education or Training (NEET) and receive income support span a wide spectrum of working ages. Australian research has concentrated on NEETs aged 15--29 years, in line with international standards. This paper investigates extending the NEET concept to include all working age persons 15--64 years and...

This study investigated patterns of universal health and education service use from birth through Kindergarten (age 4 years) and estimated associations between cumulative risk and service use patterns, and between service use patterns and children's developmental vulnerability in the Preparatory Year (age 5 years). The study used population-wide li...

Background Increased allostatic load is linked with racial discrimination exposure, providing a mechanism for the biological embedding of racism as a psychosocial stressor. We undertook an examination of how racial discrimination interacts with socioecological, environmental and health conditions to affect multisystem dysregulation in a First Natio...

This study explores the differential impact of weather on time allocation to physical activity and sleep by children and their parents. We use nationally representative data with time use indicators objectively measured on multiple occasions for more than 1,100 child-parent pairs. Employing an individual fixed effects regression model to estimate t...

This paper provides the first causal evidence on the impact of retirement on housing choices. Our empirical strategy exploits the discontinuity in the eligibility ages for state pension as an instrument for the endogenous retirement decision and controls for time-invariant individual characteristics. The results show that retirement leads to a stat...

Mobile touch screen devices (smartphones and tablet computers) have become an integral part of many parents’ and children’s lives, with this interaction linked to physical, mental and social outcomes. Despite the known importance of parent-child attachment, evidence on the association between device use and attachment was yet to be reviewed. Follow...

This article identifies and examines a range of policy reform opportunities in Australia arising from COVID‐19. The authors demonstrate how COVID‐19 presents unique opportunities for rethinking and redesigning long‐standing rules and regulations covering how people live and work in Australia, with some opportunities arising coincidentally and other...

Introduction: There is a global trend towards place-based initiatives (PBIs) to break the cycle of disadvantage and promote positive child development. Co-location is a common element of these initiatives and is intended to deliver more coordinated services for families of young children. This paper examines how co-locating early childhood service...

Introduction: Amidst the evolving COVID-19 pandemic, understanding the transmission dynamics of the SARS-CoV-2 virus is key to providing peace of mind for the community and informing policy-making decisions. While available data suggest that school-aged children are not significant spreaders of SARS-CoV-2, the possibility of transmission in schools...

Background Maternal stressful life events during pregnancy have been associated with immune dysregulation and increased risk for asthma and atopy in offspring. Few studies have investigated whether prenatal stress is associated with increased overall or specific infectious diseases in childhood, nor explored sex differences. We sought to examine th...

Background Increased allostatic load is linked with racial discrimination exposure, providing a mechanism for the biological embedding of racism as a psychosocial stressor. We undertook an examination of how racial discrimination interacts with socioecological, environmental, and health conditions to affect multisystem dysregulation in a First Nati...

In this paper, we aim to contribute to the understanding of the multidimensional nature of school readiness. In a sample of over 4,000 Australian children in their first year of school, we used latent class analysis to examine patterns of school readiness based on child, family, school and community characteristics, and examine the relationship bet...

This study tested a new program for helping smokers with severe mental illness to reduce their tobacco use, together with determining the feasibility of such research in community mental health settings in Australia. Five Neami National sites trialled a Consumer Centred Tobacco Management program called Kick the Habit (n = 34). The intervention inc...

In most English-speaking countries, the children of Asian immigrants have better academic outcomes than other children, yet the underlying causes of their advantages are unclear. Using decade-long time-use diaries on two cohorts of children, we present new evidence that children of Asian immigrants spend more time than their peers on educational ac...

In this paper, we aim to contribute to the understanding of the multidimensional nature of school readiness. In a sample of over 4,000 Australian children in their first year of school, we used latent class analysis to examine patterns of school readiness based on child, family, school and community characteristics, and examine the relationship bet...

Children’s freedom to navigate their environment independently is associated with greater physical activity and enhanced physical, social and emotional development. Parental fear is a recognized barrier to children’s independent mobility, however there are scant reliable tools to measure this fear. We report on the development and validation of two...

(Abstracted from Pediatrics 2020;145(3):e20191574) Heavy maternal alcohol use has been shown to increase the risk of negative child outcomes. These poor outcomes have been attributed to both the biological effects of alcohol exposure in utero and social or environmental factors.

Regular physical activity provides children with health and developmental benefits. This study investigated if active play and walking with the family dog was associated with better social–emotional development in young children. We surveyed 1646 parents to ascertain if families with pre-schoolers owned a dog, and the frequency per week their child...

This paper presents robust evidence that retirement causally improves overall life satisfaction which is subsequently explained by improvements in satisfaction with one’s financial situation, free time, health, and participation in local community activities. Furthermore, while the positive wellbeing impact of retirement is sizable initially, it fa...

Objective Early childhood is a critical time to address risk factors associated with developmental vulnerability. This study investigated the associations between clusters of early life risk factors and developmental vulnerability in children’s first year of full-time school at age 5. Design A retrospective cohort study. Setting Population-wide l...

Purpose Early language and speech acquisition can be delayed in twin children, a twinning effect that diminishes between 4 and 6 years of age in a population-based sample. The purposes of this study were to examine how twinning effects influence the identification of children with language impairments at 4 and 6 years of age, comparing children wit...

Objectives: Investigate the relationship between maternal alcohol-use disorder and multiple biological and social child outcomes, including birth outcomes, child protection, justice contact, and academic outcomes for both Indigenous and non-Indigenous children. Methods: Women with a birth recorded on the Western Australian Midwives Notification...

Objective: To investigate the longitudinal association between pet ownership and children's social-emotional development. Study design: Two time-points of data from the Longitudinal Study of Australian Children were analyzed for children at ages 5 (n = 4242) and 7 (n = 4431) years. The Strengths and Difficulties Questionnaire (SDQ) measured chil...

Rationale: The association between racial discrimination and adverse health outcomes has been documented across an increasing body of evidence in recent years, although a close examination of longitudinal studies has not yet taken place. This review applied a life course lens in examining the evidence for a longitudinal association between racial...

Background Identification of features of the neighbourhood physical environment that have a causal association with positive child development is important for promoting long-term developmental health. Previous research on these associations have been conducted at the neighbourhood level, and do not account for individual variation in exposure to t...

Background with rationaleAustralians who are Not in Employment, Education or Training (NEET) and receive income support span a wide spectrum of working ages. Australian research has concentrated on NEETs aged 15–29 years, in line with international standards. This paper investigates extending the NEET concept to include all working age persons 15–6...

In most multi-cultural Anglo-Saxon countries, children of Asian immigrants have higher academic achievement than children of native-born parents. Yet, little is known about their relative non-cognitive performance. This study is the first to compare the non-cognitive skills of children of Asian immigrants and children of native-born Australian pare...

Racial discrimination has been observed to negatively impact on the health of Aboriginal and Torres Strait Islander children, although evidence surrounding periods of greater vulnerability to the stressor of racism have not yet been explored in this population. We compared first exposure to interpersonal racism at either ages 4-5 years or 7 years w...

Background: Racial discrimination is acknowledged as a central social determinant of Australian Aboriginal and Torres Strait Islander (hereafter referred to as Aboriginal) health, although quantitative empirical literature on the impacts of racism on Aboriginal children remains sparse. We use a novel, longitudinal dataset to explore the relationsh...

The purpose of this study is to examine the association between poverty and child mental disorders, and in particular, address an important knowledge gap by examining the influence of primary carer mental health in these relationships. We extend previous research by differentiating by specific child mental disorders, age group (4–11 and 12–17 year-...

Purpose The association between psychotic experiences (PEs) and non-accidental self-injury (NASI; including self-harm and suicide attempts) is well established, although variables influencing this relationship have not been comprehensively examined. This study aimed to investigate (1) the cross-sectional PE–NASI association before and after adjustm...

Background Literacy is championed as a pathway out of poverty, yet it is vulnerable to the risk circumstances it seeks to mitigate. This study explored the developmental circumstances that gave rise to stark inequalities in reading achievement in Australian children across 6 years of school. Methods We used data from Growing up in Australia : the...

This paper analyzes the effects of “shocks” to community-level unemployment expectations, induced by the onset of the Great Recession, on children’s mental well-being. The Australian experience of the Great Recession represents a unique case study as despite little change in actual unemployment rates, levels of economic uncertainty grew. This affor...

We investigate patterns of childcare use and its influence on the cognitive development of Indigenous children. The influence of childcare on Indigenous children's cognitive outcomes is less well understood than for non‐Indigenous children due to a lack of appropriate data. We focus on a cohort of Indigenous children in Australia who have been foll...

This study looked at the frequency of racism experiences over time in a population of Aboriginal and Torres Strait Islander children and checked to see which factors might increase the risk of a child experiencing racism in Australia today. We found that direct and vicarious racism is commonly experienced by Aboriginal and Torres Strait Islander ch...

Aboriginal children and families face the highest levels of disadvantage of any population group in Australia across health, education, child protection, justice and other human service domains, but longitudinal data to inform policy is scant. The Western Australian Aboriginal Child Health Survey (WAACHS) is a population representative cross-sectio...

Background: Hearing loss is a disabling condition whose prevalence rises with age. Obesity-a risk factor common to many non-communicable diseases-now appears to be implicated. We aimed to determine: (1) cross-sectional associations of body composition measures with hearing in mid-childhood and mid-life and (2) its longitudinal associations with 10...

This paper provides Australian population-level estimates of the prevalence of parental self-reported lifetime mental disorders and past 12 month mental disorders in their children. It leverages unique data from the 2013–2014 Australian Child and Adolescent Survey of Mental Health and Wellbeing (Young Minds Matter) (n = 6310). Mental disorders were...

Objective: Despite growing literature on psychotic experiences, no nationally representative study has reported on the prevalence of both hallucinatory experiences and delusional experiences in Australian adolescents. Also, while many studies have examined the association between psychotic experiences and certain demographic and clinical correlate...

Longitudinal child cohort studies collect large amounts of information about children’s families and the types of activities they participate in. With such a broad array of information to select from, researchers investigating aspects of the family environment may be overwhelmed by the choices available if they only need summary measures reflecting...

The transfer of advantage and disadvantage across multiple generations is receiving increasing attention in the international literature; however, transfers of resources across multiple generations in Australian families are less well understood. Using a longitudinal dataset of Australian children, we have the opportunity to not only investigate th...

The efficacy of an enhanced version of the Aussie Optimism Program (AOP) was investigated in a cluster randomized controlled trial. Grade 6 students aged 10–11 years of age (N = 2288) from 63 government primary schools in Perth, Western Australia, participated in the pre, post, and follow-up study. Schools were randomly assigned to one of three con...

The risk factors associated with absenteeism are well known. However, children's exposure to combinations of risks and how these relate to absence patterns remains unclear. Understanding variations in risk profiles among persistently non-attending children will inform the development of absence interventions. Using a longitudinal sample of Australi...

Background Late Language Emergence (LLE) in the first two years of life is one of the most common parental concerns about child development and reasons for seeking advice from health professionals. LLE is much more prevalent in twins (38%) than singletons (20%). In studies of language development in twins without overt disability, adverse prenatal...

While an emerging body of research has examined the effects of school absences on student outcomes, there is comparatively little research examining the different reasons contributing to school absence, how common these reasons are, and the extent to which different types of absences are differentially associated with achievement. To address these...

Child care centre attendance is associated with an increased risk of concurrent ear infections but what is less clear is whether there are any positive or negative long-term effects of early child care attendance on the incidence of ear infections in later childhood. This research assessed the impact of early child care attendance on concurrent and...

Supportive Childcare Environments for Physical Activity in the Early Years. Perth, Western Australia

Purpose This study investigates the heritability of language, speech, and nonverbal cognitive development of twins at 4 and 6 years of age. Possible confounding effects of twinning and zygosity, evident at 2 years, were investigated among other possible predictors of outcomes. Method The population-based twin sample included 627 twin pairs and 1 t...

Young Minds Matter: The second Australian Child and Adolescent Survey of Mental Health and Wellbeing was part of the National Survey of Mental Health and Wellbeing initiative, an Australian Government Department of Health funded initiative. It was conducted in 2013-14 and surveyed 6,310 families with children and adolescents aged 4-17 years. Survey...