Stacy Tzoumakis

Criminal Trajectories of Adult Sex offenders and the Age Effect: Examining the Dynamic Aspect of Offending in Adulthood

Several policies have been implemented to manage the risk of sex offenders in the community. These policies, however, tend to target older repeat sex offenders. This is the first study to examine and describe the offending trajectories of adult sex offenders from early adolescence to adulthood. The current study is based on a quasipopulation of convicted adult sex offenders in the province of Quebec, Canada. The number of convictions was examined from the period of adolescence up to age 35 using a group-based modeling technique. The study uncovered four offending trajectories: (a) very low-rate group (56%); (b) late-bloomers (12%); (c) low-rate desistors (25%); and (d) high-rate chronics (8%). These trajectories differed on several key criminal career dimensions such as age of onset, frequency, diversity, and specialization in different offence types. The study findings challenge the conception of sex offenders’ risk as high, stable, and linear. The implications for the risk assessment and the risk prediction of recidivism are discussed.

Onset, Offending Trajectories, and Crime Specialization in Violence

Using data from the Montreal Longitudinal Study, the current study investigates whether age of onset is informative about the dynamic aspects of violent behaviors in males over time, in terms of violent offending frequency, crime trajectory, and, most importantly, crime specialization in violence. Self-reported data at three time points were used. Group-based modeling showed much heterogeneity in the shape of violent trajectories, which were associated with various crime specialization patterns over time. Most importantly, the number and shape of these trajectories were not accounted for by overall age of onset. Study findings show that while age of onset, especially the age of onset of violence, might be informative of the likelihood of committing a violent crime in middle adolescence, it is not informative about the dynamic process of violent offending. Of importance, violent adult offenders specializing in such crimes in adulthood were not necessarily early starters.

New South Wales Child Development Study (NSW-CDS): an Australian multiagency, multigenerational, longitudinal record linkage study

Purpose The initial aim of this multiagency, multigenerational record linkage study is to identify childhood profiles of developmental vulnerability and resilience, and to identify the determinants of these profiles. The eventual aim is to identify risk and protective factors for later childhood-onset and adolescent-onset mental health problems, and other adverse social outcomes, using subsequent waves of record linkage. The research will assist in informing the development of public policy and intervention guidelines to help prevent or mitigate adverse long-term health and social outcomes. Participants The study comprises a population cohort of 87 026 children in the Australian State of New South Wales (NSW). The cohort was defined by entry into the first year of full-time schooling in NSW in 2009, at which time class teachers completed the Australian Early Development Census (AEDC) on each child (with 99.7% coverage in NSW). The AEDC data have been linked to the childrens birth, health, school and child protection records for the period from birth to school entry, and to the health and criminal records of their parents, as well as mortality databases. Findings to date Descriptive data summarising sex, geographic and socioeconomic distributions, and linkage rates for the various administrative databases are presented. Child data are summarised, and the mental health and criminal records data of the childrens parents are provided. Future plans In 2015, at age 11 years, a self-report mental health survey was administered to the cohort in collaboration with government, independent and Catholic primary school sectors. A second record linkage, spanning birth to age 11 years, will be undertaken to link this survey data with the aforementioned administrative databases. This will enable a further identification of putative risk and protective factors for adverse mental health and other outcomes in adolescence, which can then be tested in subsequent record linkages.

Gender Differences in Physical Aggression and Associated Developmental Correlates in a Sample of Canadian Preschoolers

Recent studies have indicated that gender differences in childrens aggressive behavior emerge during the preschool years and that these differences are relatively stable during childhood. The current study assesses whether these gender differences can be observed when a multidimensional measure of aggression from the ongoing Vancouver Longitudinal Study on the psychosocial development of children is utilized. Specifically, the level of physical aggression (PA) in three cohorts of children (aged three, four, and five years) from the initial 338 families in the Wave I data recruited for this study was analyzed using a series of constrained and unconstrained latent class models. Three latent classes of physically aggressive children were identified (low, moderate, and high level), with boys being over-represented in the highly aggressive group and being five times more likely than girls to show high levels of aggression. No age effects were detected, suggesting gender differences from the age of three years onward. The correlates of PA were similar for both boys and girls. Particularly important, a small subgroup of highly aggressive boys emerged from the study showing a clinical profile similar to Moffitts life-course-persistent antisocial pattern. Such a group was not identified for girls.

Sex of Victims in Maternal Filicide

In many societies, girls are more often killed by their parents than boys. However, not much of this is known in contemporary societies. This study had two main objectives. The first was to assess whether the number of boy and girl victims of maternal filicide differ in the literature from 1959 to 2000. Using two scientific databases, Medline and PsycINFO, 20 texts were pertinent. The second objective was to identify the variables that differentiate the mothers who killed a son and those who killed a daughter in a sample of 42 women from the province of Québec (Canada). Analysis of the data for the first part indicate that the numbers of sons and daughters killed by their mothers are similar in the literature. For the second aim no significant differences were noted between the women who killed a son and those who killed a daughter for 30 variables studied, e.g., motivation, method of killing, age of the victims, etc.

The impact of parental offending on offspring aggression in early childhood: A population-based record linkage study

PurposeTo examine the impact of parental criminal offending, both paternal and maternal, on offspring aggression at age 5 years, while also considering key risk factors, including parental mental illness, child’s sex, and socioeconomic disadvantage.MethodsThe sample comprised 69,116 children, with linked parental information, from the New South Wales Child Development Study, a population-based multi-agency, multi-generational record linkage study that combines information from a teacher-reported cross-sectional survey of early childhood development at age 5 years (the 2009 Australian Early Development Census; AEDC) with data obtained via administrative records from multiple sources (e.g., health, crime, education, and welfare). Hierarchical logistic regression analyses were conducted to determine the effects of maternal and paternal criminal court appearances (frequency and type of offending), and mental health service contacts, on offspring aggression measured in the AEDC.ResultsHaving a parent with a history of offending was significantly associated with high levels of offspring aggression in early childhood. The strength of association was greatest when parents were involved in frequent (≥6 offences: adjusted odds ratio [aOR] range = 1.55–1.73) and violent (aOR range = 1.49–1.63) offending. Both maternal and paternal offending remained significant predictors of offspring aggression after accounting for parental mental illness, and associations were similar in magnitude for maternal and paternal offending histories.ConclusionsParental history of severe criminal offending increased the risk of high levels of aggression in offspring during early childhood, highlighting the need for intervention with families during this key developmental period.

Pervasive influence of maternal and paternal criminal offending on early childhood development: A population data linkage study

Background Parental criminal offending is an established risk factor for offending among offspring, but little evidence is available indicating the impact of offending on early childhood functioning. We used data from a large Australian population cohort to determine associations between exposure to parental offending and a range of developmental outcomes at age 5 years. Method Multi-generation data in 66 477 children and their parents from the New South Wales Child Development Study were combined using data linkage. Logistic and multinomial regressions tested associations between any and violent offending histories of parents (fathers, mothers, or both parents) obtained from official records, and multiple measures of early childhood developmental functioning (social, emotional–behavioural, cognitive, communication and physical domains) obtained from the teacher-reported 2009 Australian Early Development Census. Results Parental offending conferred significantly increased risk of vulnerability on all domains, particularly the cognitive domain. Greater risk magnitudes were observed for offending by both parents and by mothers than by fathers, and for violent than for any offending. For all parental offending exposures, vulnerability on multiple domains (where medium to large effects were observed) was more likely than on a single domain (small to medium effects). Relationships remained significant and of comparable magnitude following adjustment for sociodemographic covariates. Conclusions The effect of parental offending on early childhood developmental outcomes is pervasive, with the strongest effects on functioning apparent when both parents engage in violent offending. Supporting affected families in early childhood might mitigate both early developmental vulnerability and the propensity for later delinquency among these offspring.

The 2015 Middle Childhood Survey (MCS) of mental health and well-being at age 11 years in an Australian population cohort

Purpose The Middle Childhood Survey (MCS) was designed as a computerised self-report assessment of children’s mental health and well-being at approximately 11 years of age, conducted with a population cohort of 87 026 children being studied longitudinally within the New South Wales (NSW) Child Development Study. Participants School Principals provided written consent for teachers to administer the MCS in class to year 6 students at 829 NSW schools (35.0% of eligible schools). Parent or child opt-outs from participation were received for 4.3% of children, and MCS data obtained from 27 808 children (mean age 11.5 years, SD 0.5; 49.5% female), representing 85.9% of students at participating schools. Findings to date Demographic characteristics of participating schools and children are representative of the NSW population. Children completed items measuring Social Integration, Prosocial Behaviour, Peer Relationship Problems, Supportive Relationships (at Home, School and in the Community), Empathy, Emotional Symptoms, Conduct Problems, Aggression, Attention, Inhibitory Control, Hyperactivity-Inattention, Total Difficulties (internalising and externalising psychopathology), Perceptual Sensitivity, Psychotic-Like Experiences, Personality, Self-esteem, Daytime Sleepiness and Connection to Nature. Distributions of responses on each item and construct demarcate competencies and vulnerabilities within the population: most children report mental health and well-being, but the population distribution spanned the full range of possible scores on every construct. Future plans Multiagency, intergenerational linkage of the MCS data with health, education, child protection, justice and early childhood development records took place late in 2016. Linked data were used to elucidate patterns of risk and protection across early and middle child development, and these data will provide a foundation for future record linkages in the cohort that will track mental and physical health, social and educational/occupational outcomes into adolescence and early adulthood.

Profiles of Maternal Parenting Practices Exploring the Link With Maternal Delinquency, Offending, Mental Health, and Children’s Physical Aggression

Studies have often linked parenting to children’s subsequent antisocial behavior; however, the circumstances under which this might occur are less clear. The current study explores patterns in mothers’ parenting practices, and associated correlates including maternal delinquency and offending, mental health, and children’s physical aggression. This study is based on the first wave of the ongoing Vancouver Longitudinal Study; the objective of this prospective study is to identify the early risk and protective factors for aggression and violence from the earliest developmental periods. Parenting practices of 287 mothers with preschoolers are examined using a series of latent class analyses. Three different patterns of parenting emerged: Positive, Negative, and Intermittent. Patterns identified are associated with several key criminogenic, socio-demographic, historical, and developmental factors including current maternal adult offending, mothers’ mental health, ethnicity, and frequency of children’s physical aggression. Importantly, mothers who show parenting in line with the more negative classes also rely on a number of positive practices. Implications of the study suggest that parenting is influenced by mothers’ immediate situations and contexts (e.g., current offending rather that past delinquency), which can be targeted for intervention.

Patterns of Intimate Partner Violence victimization among Australia and New Zealand female university students: An initial examination of child maltreatment and self-reported depressive symptoms across profiles

The aim of this study was to examine the relationship between child abuse, depression, and patterns of Intimate Partner Violence victimization among female university students in Australia and New Zealand. Data were based on the Australia/New Zealand portion of the International Dating Violence Study (2001–2005) (n = 293). Using Latent Class Analysis, Low-, Moderate-, and High-level Intimate Partner Violence profiles were identified that differed according to the variety, degree, and severity of Intimate Partner Violence. Furthermore, the combination of child maltreatment and self-reported depressive symptoms differed across profiles. The results highlighted differential pathways from child maltreatment to specific Intimate Partner Violence victimization patterns. These findings provide further evidence for the importance of early intervention strategies to prevent Intimate Partner Violence, and specifically for children who experience abuse and neglect to help prevent subsequent victimization experiences in intimate relationship contexts.