Understanding changes in aggressive behaviour throughout child development is crucial for identifying effective intervention strategies. This study investigates children's aggressive behaviour in a longitudinal cohort and explores the role of environmental tobacco exposure and fish consumption as potential risk and protective factors, respectively, for persistent aggression in children.
This study involved 452 children from the Chinese Jintan Cohort. Aggressive behaviour was assessed at ages 6 and 12 years using the child behaviour checklist (CBCL) and the Reactive–Proactive Aggression Questionnaire (RPQ), respectively. Information on lifestyle habits and living environment, including parental smoking, was collected via questionnaires. Linear regression was employed to investigate the association between childhood and adolescence aggressive behaviour with relevant covariates adjusted. Subsequently, we conducted interaction analyses to explore the moderating effects of parent smoking and fish consumption on the association.
We identified no significant association between childhood and adolescent aggression in the entire sample. Interaction analysis revealed environmental tobacco exposure as a moderator for the association. Specifically, persistent reactive and total aggression across development was only observed among those with environmental tobacco exposure (reactive: β = 0.549, p = 0.020; total: β = 0.654, p = 0.035). Furthermore, within the parent smoking subgroup, freshwater fish consumption at the age of 12 showed a marginally significant interaction with childhood aggression (reactive: p = 0.061; total: p = 0.095). A significant longitudinal association for aggression was found only among those consuming fish less frequently at the age of 12 years (reactive: β = 0.927, p = 0.002; total: β = 1.082, p = 0.006).
Our findings suggest exposure to environmental tobacco as a contributing factor to the lasting presence of aggressive behaviour during children's development, whereas freshwater fish consumption shows potential protective effects.
Schools are widely considered important agents of social control for young people. Consequently, school engagement, disengagement and the school environment are key to understanding behavioural outcomes during adolescence. This study addresses an empirical gap in longitudinal research by examining new types of school engagement, as well as school-level environmental factors.
To understand the role that school engagement and the school environment play in shaping trajectories of antisocial behaviour.
Using longitudinal survey of Australian children (LSAC), this study employed trajectory analysis to identify trajectories of ASB over 4 waves. We tested the influence that early high school engagement and the school environment had on ASB trajectories through a series of multinomial logistic regressions.
Of the 2983 Australian school students included in the study, three trajectory groups were identified: no ASB (n = 1599), low-level ASB (n = 1158) and moderate-level ASB (n = 88). The influence of truancy, suspension/expulsion and school avoidance were all particularly strong, and student–teacher relationships were found to both directly and indirectly influence levels of ASB.
This longitudinal study provides a comprehensive overview of trajectories of antisocial behaviour during adolescence and how they are influenced by experiences at school. It confirms the strong influence of behavioural disengagement and offers new insights into the role of affective school engagement and the school environment.
David Farrington (1944–2024) wrote extensively about the methodological rigour and utility of the longitudinal-experimental research design to advance knowledge about the development, explanation, prevention and treatment of antisocial behaviour and criminal offending over the life-course. Founded in 1935, the Cambridge-Somerville Youth Study (CSYS) is recognised as the first randomised controlled trial in criminology and the first longitudinal-experimental study in criminology.
To report on key scientific and policy contributions made by the CSYS in investigating the development and prevention of delinquency and criminal offending over the life-course.
Uses previously analysed observational and experimental data from follow-ups of study participants conducted in middle age (N = 494; mean = 47 years) and old age (N = 488; 84–92 years).
Identified several parental socialisation practices and interactions during childhood (but not father absence) as strongly associated with serious criminal offending in middle age. Support for peer deviancy as a causal mechanism for iatrogenic effects among treatment groups, compared to pair-matched controls, during middle age drew policy attention to group-based prevention interventions.
The longitudinal-experimental design is a highly important yet under-utilised methodological approach in criminology. Future research should include revisiting the original plan for the design, addressing a key potential concern of the design and carrying out longer follow-ups at key stages of the life-course.
Cumulative risk scores predict negative outcomes including antisocial behaviour and mental health. Less work has examined the role of cumulative protection, despite the availability of preventive interventions focused on bolstering protection across domains. Understanding links between cumulative risk and protection measured in childhood and later outcomes can help to guide the timing of prevention programmes.
The study aimed to understand the relative contributions of early adolescent cumulative risk and cumulative protection in Grade 6 on distal outcomes six to seven years later, at ages 18–19.
Data are from the Community Youth Development Study, a community-randomised trial of the Communities That Care prevention system. The analysis sample consisted of 2002 participants from 12 control communities. Logistic regression models were estimated to quantify the main and interactive effects of Grade 6 cumulative risk and protection on alcohol, tobacco and cannabis use; antisocial behaviour, and depression at ages 18–19.
When considered in separate models, cumulative risk and protection were each associated with later alcohol, tobacco and cannabis misuse; antisocial behaviour and depression. When considered together, coefficients for cumulative protection were attenuated, whereas coefficients for cumulative risk remained similar in magnitude. Cumulative risk was associated with larger outcome prevalence differences (average of 9%) than cumulative protection (average of 2%). Evidence for risk-protection interactions was not observed.
Although early adolescent cumulative protection was associated with later outcomes, these associations were largely reduced when considering cumulative risk. Findings emphasise the importance of addressing cumulative risk when designing preventive interventions.
The term neurodiversity is an umbrella term for any atypical pattern of cognitive ability, including but not confined to neurodevelopmental disorders. Research suggests that several neurodivergent conditions are overrepresented in offender populations, with a recent survey suggesting that over half of those coming into contact with the criminal justice system may have a neurodivergent condition. Considerable effort has been invested in trying to divert people with such conditions out of long-stay hospitals, but nevertheless, a few studies in secure hospitals suggest that while prevalence in hospitals may be lower than in prisons, it is high relative to the general population.
To determine the prevalence of recorded neurodivergent conditions in one high secure hospital.
We conducted a records survey of a resident cohort of men in one high secure hospital in England during December 2022.
Records were accessed for all 197 resident men. According to these records, over one-half (115, 58%) of the men had at least one neurodivergent condition; nearly a third (56, 29%) had more than one form of neurodivergent condition. The most frequently recorded form of neurodivergent condition was general cognitive dysfunction (24%), followed by general language difficulties (16%), ADHD (15%) and autism (14%) and those with a history of seizures (14%) and atypical brain scans (12%). Dyslexia was reported within 6.5% of patient notes, acquired brain injury 5% and chromosomal disorders 2%. The survey also suggests some differences in the prevalence of neurodivergent disorders across clinical groups, with higher rates among people with mental illness than with personality disorder. Prevalence was also unevenly distributed across nature of ward type.
With the survey suggesting that the majority of patients in one high secure psychiatric hospital have at least one form of neurodivergent condition, it raises questions around how useful the term is and what the term neurodivergence means in this population. With each form of neurodiversity having different needs, the diversity of conditions present also raises questions around what a ‘neurodiverse informed model of care’ would look like in forensic mental health services.
Recent evidence suggests that autonomic nervous system functioning can reflect individual differences in sensitivity to the environment, which in turn moderates the effects of family context on psychopathic and antisocial behaviour. Although some preliminary research suggests that the coordination of the sympathetic (SNS) and parasympathetic (PNS) branches of the autonomic nervous system may reflect sensitivity to environmental influences, the majority of research to date has been limited in its focus on just one branch, and little is known about the effects of parental empathy on a child's psychopathic-like traits. This study aimed to address this gap by examining if the SNS and PNS jointly moderate the prospective contribution of parental empathy to youth psychopathic-like traits.
Male and female children (n = 340; age = 8–10 years) from the community completed an emotion regulation task during which their skin conductance level (SCL) and respiratory sinus arrhythmia (RSA) activity were recorded. Parental cognitive, affective, and somatic empathy were reported by the caregivers. The child's psychopathic-like traits were reported by the caregiver and the child and were reassessed 1 year later.
Hierarchical regression indicated that after controlling for child sex, age, and concurrent CU traits, low affective empathy in parents predicted higher CU traits 1 year later in youths who exhibited reciprocal sympathetic activation (i.e., SNS activation along with PNS withdrawal), reflecting their enhanced sensitivity to the environment. No such effects were found for other psychopathic-like traits.
Findings suggest that reciprocal SNS reactivity may be a biological indicator for sensitivity to environmental influence and highlight the importance of examining the interactions among multiple systems to better understand the aetiology of psychopathic traits.
A substantial number of police–citizen interactions involve a civilian presenting in a mental health crisis, often with law enforcement as the first point of contact. Traditional training methods offer minimal opportunity for police to practice navigating such civilian interactions or to develop and strengthen relevant skills. Virtual reality (VR) offers a promising avenue for addressing this gap by immersing police officers in realistic, controlled environments that could help them to acclimatise to these encounters and understand their own reactions to them.
To examine the extent to which law enforcement officers become immersed in a virtual training environment (VTE), to assess their empathy and sympathy towards a non-player character (NPC) presenting with schizophrenic psychosis and how empathy and sympathy relate to virtual immersion.
Forty police officers—about a fifth of the department approached—participated in a VR mental health training scenario. Officers' immersion in the VTE was assessed using a 28-item Presence Questionnaire and their empathy and sympathy were measured using adapted standard scales. The study employed Fisher's Exact Test and Spearman's correlation to analyse the relationships between immersion, empathy and sympathy.
Most officers experienced good levels of immersion, although nearly half felt confused or disoriented at the beginning of the session. Officers reported moderate levels of sympathy and higher empathy towards a non-player character. Significant correlations were found between specific aspects of immersion (e.g. sensory engagement) and empathy. Fisher's Exact Test revealed strong associations between physical interactions in the VTE and empathy/sympathy.
Our findings show that police are willing and able to engage in a VR exercise to learn about their response to people in a mental health crisis and that, in such circumstances, they can be both sympathetic and empathic. Next steps will be exploration of the value of such a tool to enhance real-life responding.
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