Adolescent predictors and environmental correlates of young adult alcohol use problems

To examine the rates of young adult alcohol and drug use and alcohol problems, adolescent predictors of young adult alcohol problems and correlations with young adult social, work and recreational environments.

Young adult sequelae of adolescent cannabis use: an integrative analysis

 Background: Debate continues about the consequences of adolescent cannabis use. Existing data are limited in statistical power to examine rarer outcomes and less common, heavier patterns of cannabis use than those already investigated; furthermore, evidence has a piecemeal approach to reporting of young adult sequelae. We aimed to provide a broad picture of the psychosocial sequelae of adolescent cannabis use. Methods: We integrated participant-level data from three large, long-running longitudinal studies from Australia and New Zealand: the Australian Temperament Project, the Christchurch Health and Development Study, and the Victorian Adolescent Health Cohort Study. We investigated the association between the maximum frequency of cannabis use before age 17 years (never, less than monthly, monthly or more, weekly or more, or daily) and seven developmental outcomes assessed up to age 30 years (high-school completion, attainment of university degree, cannabis dependence, use of other illicit drugs, suicide attempt, depression, and welfare dependence). The number of participants varied by outcome (N=2537 to N=3765). Findings: We recorded clear and consistent associations and dose-response relations between the frequency of adolescent cannabis use and all adverse young adult outcomes. After covariate adjustment, compared with individuals who had never used cannabis, those who were daily users before age 17 years had clear reductions in the odds of high-school completion (adjusted odds ratio 0·37, 95% CI 0·20-0·66) and degree attainment (0·38, 0·22-0·66), and substantially increased odds of later cannabis dependence (17·95, 9·44-34·12), use of other illicit drugs (7·80, 4·46-13·63), and suicide attempt (6·83, 2·04-22·90). Interpretation: Adverse sequelae of adolescent cannabis use are wide ranging and extend into young adulthood. Prevention or delay of cannabis use in adolescence is likely to have broad health and social benefits. Efforts to reform cannabis legislation should be carefully assessed to ensure they reduce adolescent cannabis use and prevent potentially adverse developmental effects. Funding: Australian Government National Health and Medical Research Council. © 2014 Elsevier Ltd.

The role of a care-orientation in the teens in young adult psychosocial wellbeing

Abstract
The transition from adolescence to young adulthood is a watershed period in development that carries risk for poor psychosocial adjustment. It also carries potential for positive transitions into the caregiving roles and responsibilities of adult life. Research to date has predominantly focused on adolescent predictors of problematic rather than positive transitions; yet predictors of the latter hold equal (if not greater) promise for informing health promoting interventions. The purpose of this study was threefold: (1) to use Latent Profile Analysis (LPA) to define patterns of psychosocial adjustment and maladjustment in young adulthood (21-years of age); (2) to examine the unique role of adolescent prosocial behaviour (e.g., volunteering and civic engagement) in promoting adjustment and reducing maladjustment in young adulthood; and, (3) to examine whether protective developmental relationships are maintained after adjustment for other covariates including socio-economic background factors and personality characteristics. Data were drawn from the Victorian cohort of the International Youth Development Study (IYDS; N = 2407), a representative sample of students in Victoria, Australia. Students were assessed in Grade 9 (Mean age = 15-years) and followed up at age 21-years. LPA identified three psychosocial adjustment classes at age 21 defined as: (1) Adjusted (24.8 %); (2) Normative (63.9 %); and, (3) Maladjusted (11.3 %). Adolescent volunteering, belief in a moral order, family opportunities for prosocial behaviour, and commitment to school were associated with enhanced adjustment and reduced maladjustment in young adulthood. Findings highlight the potential benefit of interventions designed to enhance adolescent prosocial behaviours and care orientation in promoting healthy transitions into young adult life.

Developmental trajectories of adolescent cannabis use and their relationship to young adult social and behavioural adjustment: a longitudinal study of Australian youth

This study aimed to identify distinct developmental trajectories (sub-groups of individuals who showed similar longitudinal patterns) of cannabis use among Australian adolescents, and to examine associations between trajectory group membership and measures of social and behavioural adjustment in young adulthood. Participants (n=852, 53% female) were part of the International Youth Development Study. Latent class growth analysis was used to identify distinct trajectories of cannabis use frequency from average ages 12 to 19, across 6 waves of data. Logistic regression analyses and analyses of covariance were used to examine relationships between trajectory group membership and young adult (average age: 21) adjustment, controlling for a range of covariates. Three trajectories were identified: abstainers (62%), early onset users (11%), and late onset occasional users (27%). The early onset users showed a higher frequency of antisocial behaviour, violence, cannabis use, cannabis-related harms, cigarette use, and alcohol harms, compared to the abstinent group in young adulthood. The late onset occasional users reported a higher frequency of cannabis use, cannabis-related harms, illicit drug use, and alcohol harms, compared to the abstinent group in young adulthood. There were no differences between the trajectory groups on measures of employment, school completion, post-secondary education, income, depression/anxiety, or alcohol use problems. In conclusion, early onset of cannabis use, even at relatively low frequency during adolescence, is associated with poorer adjustment in young adulthood. Prevention and intervention efforts to delay or prevent uptake of cannabis use should be particularly focussed on early adolescence prior to age 12.

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

BACKGROUND: The aims of the study were to describe the patterning and persistence of anxiety and depressive symptoms from adolescence to young adulthood and to examine long-term developmental relationships with earlier patterns of internalizing behaviours in childhood. METHOD: We used parallel processes latent growth curve modelling to build trajectories of internalizing from adolescence to adulthood, using seven waves of follow-ups (ages 11-27 years) from 1406 participants of the Australian Temperament Project. We then used latent factors to capture the stability of maternal reported child internalizing symptoms across three waves of early childhood follow-ups (ages 5, 7 and 9 years), and examined relationships among these patterns of symptoms across the three developmental periods, adjusting for gender and socio-economic status. RESULTS: We observed strong continuity in depressive symptoms from adolescence to young adulthood. In contrast, adolescent anxiety was not persistent across the same period, nor was it related to later depressive symptoms. Anxiety was, however, related to non-specific stress in young adulthood, but only moderately so. Although childhood internalizing was related to adolescent and adult profiles, the associations were weak and indirect by adulthood, suggesting that other factors are important in the development of internalizing symptoms. CONCLUSIONS: Once established, adolescent depressive symptoms are not only strongly persistent, but also have the potential to differentiate into anxiety in young adulthood. Relationships with childhood internalizing symptoms are weak, suggesting that early adolescence may be an important period for targeted intervention, but also that further research into the childhood origins of internalizing behaviours is needed.

Postcolonial bildungsroman: indigenous subjects and identity-formation

In the bildungsroman as it has conventionally been defined, individuals attain self-actualisation through a series of experiences whereby they accommodate their individuality to a social order.  Protagonists negotiate their transition from childhood to young-adulthood by way of educative experiences, trials of various kinds, and a search for identity, which is generally formulated as a fixed or stable essence which they must discover or accept.  In this paper I focus on two examples of bildungsroman by Indigenous Canadian and Australian authors: Jeannette Armstrong’s Slash (1985),and Richard J. Frankland’s Digger J. Jones (2007).  Both novels feature male protagonists whose stories play out against the background of Indigenous activism in the 1960s.  As they track the identity-formation of their protagonists, the two novels deconstruct simple or fixed ideas of national identity by pointing to the complex cross-cultural relationships which have characterised settler societies.  At the same time,these novels dramatise the power of socialising practices which promote white superiority and position Indigenous peoples as supplicants or victims.  Both novels draw on what Paul Havemann terms the "new politics of identity and cultural recognition" which characterise contemporary Indigenous activism, re-reading events and settings of the 1960s in the light of discourses of cultural recognition and self-determination.

Community efficacy and social capital

It has been suggested that the quantity and quality of a community’s social capital has a large impact on that community’s capacity to manage change. Despite many attempts, social capital remains notoriously difficult to measure. There is general consensus that social capital is the ‘property’ of a community or collective, yet in measurement frameworks social capital is normally aggregated up across individuals and different levels. Communities are not homogeneous; we argue that the differential capacity of various groups within the community to participate should be considered. Any measure of community social capital must take account of the diversity of the community and potentially unequal access of groups and individuals to community social capital: the nature and quality of opportunities is not uniform. Further, the validity of social capital depends in fact on its contextualisation – social capital resources that are effective in one context are not necessarily effective in another.

In this paper we present a new way of thinking about the social capital of a community, linked to the community’s capacity to deliver favourable outcomes for its members. We use the term community efficacy for this capacity to manage change and influence the future of the collective and community members. We present a framework that describes the nature and quality of the factors that influence community efficacy and are at the heart of a community’s social capital resources. The framework recognises that social capital resources are used at the point of interaction between community members; hence opportunities for interaction are important. We suggest that the framework can be applied to measure community efficacy in various contexts, and discuss how it can be applied to a rural community’s ability to foster successful transitions to young adulthood for its young people.

Modeling gene-environment interaction in longitudinal data : risk for neuroticism due to interaction between maternal care and the Dopamine 4 Receptor gene (DRD4)

The purpose of this study was to investigate risk for neuroticism due to the joint action of low maternal care and compromised mesocorticolimbic ‘reward’ system function linked to a variable number tandem repeat (VNTR) in the dopamine 4 receptor gene (DRD4). Data were drawn from the Victorian Adolescent Health Cohort Study, a longitudinal study of the health and well-being of 2,000 young Australians followed from adolescence to young adulthood across 8 waves from 14- to 28-years. Genetic risk was defined by carriage of at least one copy of the 7-repeat allele or derivative alleles 5, 6, and 8 (labeled 7R+). Neuroticism was assessed in adolescence and young adulthood. We observed an approximately fourfold increase in the odds of reporting neurotic symptoms in carriers of the 7R+ disposition who reported low maternal care compared with non-carriers who reported high maternal care. The percentage of risk attributable to mechanisms in which both factors played a role was 35%. Findings are discussed in terms of implications for prevention.

A role for the DRD4 exon III VNTR in modifying the association between nicotine dependence and neuroticism

Introduction: Neurotic psychopathology has been extensively examined as a risk factor for nicotine dependence (ND). Genetic stratification may partially explain variability in risk estimates. Genetic variants that compromise dopaminergic neurotransmission may motivate exposure to dopamine-stimulating agents, including nicotine. The 7-repeat allele of a Variable Number Tandem Repeat (VNTR) polymorphism in DRD4 (and evolutionary derivatives 5, 6, and 8 repeats; 7R+) is associated with reduced dopamine receptor function. The purpose of this study was to examine association between both smoking initiation (SI) and progression to ND by young adulthood and (a) history of neuroticism during adolescence, (b) DRD4 7R+, and (c) interaction between neuroticism and DRD4 7R+.

Methods: Participants were drawn from the Victorian Adolescent Health Cohort Study, a longitudinal study of the health and well-being of young Australians across 8 waves (14–24 years). Neuroticism was measured at Waves 3 and 6 (mean 15.9 and 17.4 years). SI was defined as any smoking at any wave. ND was measured at Wave 8 (mean 24.1 years). Genotype data for the DRD4 VNTR were available for 839 participants.

Results: While adolescent neuroticism was associated with SI, evidence for association with progression to ND was weak. However, there was evidence of interaction between neuroticism and DRD4 7R+: The odds of progression to ND among those with a history of neuroticism were more than 3.5-fold higher among 7R+ carriers.

Conclusions: Without considering stratification by 7R+, the association between progression to ND and neuroticism would have been assumed barely significant. However, among those carrying DRD4 7R+, risk of progression was considerably intensified.

Gene-environment interaction in problematic substance use : interaction between DRD4 and insecure attachments

To investigate the combined effect of an exon III variable number tandem repeat in the dopamine receptor gene (DRD4) and insecure attachment style on risk for tobacco, cannabis and alcohol use problems in young adulthood. It was hypothesized that (1) individuals with 5, 6, 7 or 8 repeats (labelled 7R+) would be at increased risk for problematic drug use, and (2) risk for drug use would be further increased in individuals with 7R+ repeats who also have a history of insecure parent–child attachment relations. Data were drawn from the Victorian Adolescent Health Cohort Study, an eight-wave longitudinal study of adolescent and young adult development. DRD4 genotypes were available for 839 participants. Risk attributable to the combined effects of 7R+ genotype and insecure attachments was evaluated within a sufficient causes framework under the assumptions of additive interaction using a two-by-four table format with a common reference group. 7R+ alleles were associated with higher tobacco, cannabis and alcohol use (binging). Insecure attachments were associated with higher tobacco and cannabis use but lower alcohol use. For tobacco, there was evidence of interaction for anxious but not avoidant attachments. For cannabis, there was evidence of interaction for both anxious and avoidant attachments, although the interaction for anxious attachments was more substantial. There is no evidence of interaction for binge drinking. Results are consistent with a generic reward deficit hypothesis of drug addiction for which the 7R+ disposition may play a role. Interaction between 7R+ alleles and attachment insecurity may intensify risk for problematic tobacco and cannabis use.

Association of early childhood abdominal circumference and weight gain with blood pressure at 36 months of age: secondary analysis of data from a prospective cohort study

To assess whether changes in measures of fat distribution and body size during early life are associated with blood pressure at 36 months of age.

Psychosocial moderators of associations between life events and changes in physical activity after leaving high school

To examine 1) associations between life events and changes in leisure-time physical activity (LTPA) in school leavers and 2) whether these associations are moderated by psychosocial factors.

Consumer socialization agency: implications for family decision-making about holidays

This paper investigates the influence young adult children living at home have over parents' holiday decisions. "Consumer socialization agency" (CSA) was developed as a measure to capture the intercession or mediation one person accepts from another person about consumption issues. The analysis was conducted through a dyadic method, which involves collecting data from and analyzing data about pairs of people (dyads); in this case, parents and their children. CSA was related to family size and gender+ but more closely related to family communication style. Families fostering an open, issue-based communication style seem to have the highest likelihood of children socializing parents. © 2014 © 2014 Taylor & Francis.

Problem gambling and internalising symptoms: A longitudinal analysis of common and specific social environmental protective factors.

Comorbidity between problem gambling and internalising disorders (anxiety and depression) has long been recognised. However, it is not clear how these relationships develop, and what factors can foster resilience to both conditions. The current study draws on longitudinal cohort data to investigate: 1) the cross-sectional and longitudinal relationships between problem gambling and internalising symptoms; 2) whether there are common and/or specific social environmental factors protective against both internalising symptoms and problem gambling in young adulthood; and 3) interactive protective factors (i.e., those that moderate the relationship between problem gambling and internalising symptoms).

Prediction of perinatal depression from adolescence and before conception (VIHCS): 20-year prospective cohort study

BACKGROUND: Perinatal depression is a neglected global health priority, affecting 10-15% of women in high-income countries and a greater proportion in low-income countries. Outcomes for children include cognitive, behavioural, and emotional difficulties and, in low-income settings, perinatal depression is associated with stunting and physical illness. In the Victorian Intergenerational Health Cohort Study (VIHCS), we aimed to assess the extent to which women with perinatal depressive symptoms had a history of mental health problems before conception. METHODS: VIHCS is a follow-up study of participants in the Victorian Adolescent Health Cohort Study (VAHCS), which was initiated in August, 1992, in the state of Victoria, Australia. In VAHCS, participants were assessed for health outcomes at nine timepoints (waves) from age 14 years to age 29 years. Depressive symptoms were measured with the Revised Clinical Interview Schedule and the General Health Questionnaire. Enrolment to VIHCS began in September, 2006, during the ninth wave of VAHCS; depressive symptoms at this timepoint were measured with the Composite International Diagnostic Interview. We contacted women every 6 months (from age 29 years to age 35 years) to identify any pregnancies. We assessed perinatal depressive symptoms with the Edinburgh Postnatal Depression Scale (EPDS) by computer-assisted telephone interview at 32 weeks of gestation, 8 weeks after birth, and 12 months after birth. We defined perinatal depression as an EPDS score of 10 or more. FINDINGS: From a stratified random sample of 1000 female participants in VAHCS, we enrolled 384 women with 564 pregnancies. 253 (66%) of these women had a previous history of mental health problems at some point in adolescence or young adulthood. 117 women with a history of mental health problems in both adolescence and young adulthood had 168 pregnancies, and perinatal depressive symptoms were reported for 57 (34%) of these pregnancies, compared with 16 (8%) of 201 pregnancies in 131 women with no preconception history of mental health problems (adjusted odds ratio 8·36, 95% CI 3·34-20·87). Perinatal depressive symptoms were reported at one or more assessment points in 109 pregnancies; a preconception history of mental health problems was reported in 93 (85%) of these pregnancies. INTERPRETATION: Perinatal depressive symptoms are mostly preceded by mental health problems that begin before pregnancy, in adolescence or young adulthood. Women with a history of persisting common mental disorders before pregnancy are an identifiable high-risk group, deserving of clinical support throughout the childbearing years. Furthermore, the window for considering preventive intervention for perinatal depression should extend to the time before conception. FUNDING: National Health and Medical Research Council (Australia), Victorian Health Promotion Foundation, Colonial Foundation, Australian Rotary Health Research and Perpetual Trustees.