Rates Of Offending Research Articles

Assessing the Effectiveness of a Specialized, Field-Based Treatment Program for Youth Who Have Committed Sexual Offenses in an Australian Jurisdiction.

This study provides an evaluation of recidivism outcomes for a specialized, field-based treatment program for youth who perpetrate sexual offenses in an Australian jurisdiction. Using survival analyses, recidivism outcomes for the treatment group (n = 200), who were followed for an average of 5.07 years (SD = 3.13), were contrasted with a sample of sexually offending youth who were either referred but not accepted or not referred to the program (n = 295). Rates of sexual recidivism were low and not significantly different between the groups (9.5% for treated and 10.8% for untreated). Unadjusted Cox regression results indicated that the treated group were less likely to violently recidivate compared to the untreated group (HR = 1.41, 95% CI [1.01, 1.96]), but this effect became nonsignificant when controlling for offense history covariates (HR = 1.22, 95% CI [0.87, 1.72]). Both groups exhibited high rates of nonsexual offending during the follow-up period, and treatment factors including clinician-rated success, were found to be associated with a lower frequency of reoffending after treatment. Findings highlight important considerations for both practice and research. First, findings suggest the need for specialized programs to ensure factors associated with general recidivism are also addressed in treatment; second, findings reinforce potential utility for clinician-rated and structured assessments to inform treatment planning and outcomes. Finally, the findings raise the importance of appropriate comparison groups when designing evaluation studies, to accurately inform policy and practice.

Double system contact: The experiences of children-looked-after in the youth justice system

ObjectivesTo understand the needs and vulnerabilities of this cohort, and identify where there are opportunities for timely and appropriate support from a range of statutory and non-statutory organisations as they navigate the youth justice system.
 MethodsThis feasibility study linked external youth justice data from two Welsh local authorities with education, health, social services and family court data held in SAIL Databank. Once combined, it was possible to gain further insights into the nature and extent of contact with other state agencies, and to test for statistically significant differences in the profile of this cohort relative to their peers; in index risk scores across 12 domains and in the trajectory of the probability of further offending behaviour. The latter was considered via a series of hierarchical binary logistical regression models conducted under a Bayesian framework.
 ResultsThose with double system contact typically had higher index risk scores than their peers, with the greatest differences being in relation to the Family and Personal Relationships, Living Arrangements, and Emotional and Mental Health domains. In terms of vulnerabilities, the higher rates of additional learning needs were striking, with this potentially contributing to higher levels of non-compliance and more serious consequences. Notably rates of further offending are found to be higher amongst those who are care experienced and/or have additional learning needs, with care experienced children being twice as likely to commit further offences than their peers; more than 2.5 times more likely to breach; twice as likely to return to court and were more than 5 times more likely to spend time in custody.
 ConclusionFindings, reinforce the need for a more tailored, child first approach in youth justice with other agencies also needing to recognise the impact of prior trauma and adapt their practice in order to appropriately respond to the additional vulnerabilities amongst this cohort.

A sharp decline in youth crime: reviewing trends in New Zealand’s youth offending rates between 1998 and 2019

ABSTRACT There is a paucity of research investigating New Zealand’s rates of youth offending. This study examines trends in youth offending data between 1998 and 2019, then compares these with the rate at which emerging adults (aged 17 to 24) entered the justice system during this period. Our approach aimed to explore whether changes in youth offending may have had a downstream impact on rates of justice-system contact among emerging adults. Results indicate that the overall rate at which youth were alleged to have offended (per police data) reduced by 58% between 2010 and 2018, which coincided with a significant reduction in the rates at which emerging adults were imprisoned, sentenced or remanded into custody. Additionally, the rate at which young people were formally charged in Youth Court fell by 73% between 2008 and 2018. However, the rate of decline was less for the overrepresented Indigenous Māori and minority ethnic group of Pasifika young people. Serious offending (including by minority groups) reduced at lesser rates than did less serious offending, while reoffending rates remained fairly static. International trends in reductions of youth offending are examined, and recommendations made to better manage the needs of young people at risk of serious offending.

A discussion of early maladaptive schemas in men convicted sexual offenders in Poland.

Aim of the studyThis study aims to explore differences in the prevalence of early maladaptive schemas (EMS) in convicted sexual offenders (CSO’s) as compared to the general male population (control group).Subject or material and methodsThe study included 102 men incarcerated for sexual offences and 167 men from a non-criminal population. The study used the Polish version of Young’s schema questionnaire – YSQ-S3-PL.ResultsThe results demonstrated a higher degree of EMS severity in CSO except in the ‘impaired limits’ domain where non-criminal individuals scored higher. The individuals who have committed sexual offenses displayed more extensive and severe schemas than non-criminal / non-treated males (including more EMS domains).DiscussionThe study revealed nine early maladaptive schemas characterising the specific mind-set of male sex offender convicts. The results seem to illustrate well the genesis of the formation of a disordered personality as described by J. Young within the schema therapy concept. In the context of the cited studies, these structures – in addition to their important role in the development of psychopathology – appear to contribute to sexual offending.ConclusionsThe conclusion emerging from the findings is that EMS are an important problem for Individuals involved in sexual offending. A consideration of these schemas in the psychotherapy of CSO’s would help develop new and effective therapeutic protocols designed to treat that particular population and reduce the rate of repeat offending.

Impact of base rate information on estimated risk of recidivism of sex offenders in Japan

ABSTRACT The purpose of this study was to examine the public’s estimates of recidivism risk among sex offenders and the ways those estimates are impacted by base rate information. Participants were 400 individuals (200 males and 200 females) in Japan recruited by a web-based research company. Each participant was allocated to either the experimental group with or the control group without base rate recidivism information and asked to estimate the recidivism rate of a sex offender after release from prison. The results show that the average estimated recidivism rates were 54.4% and 33.8% in the control and experimental groups, respectively, indicating a significant difference (Welch’s t (389.70) = 8.32, p < .001, Cohen’s d = .83). However, even the experimental group’s average estimated rate was much higher than the actual national base rate of 17.0%. Multiple regression analysis revealed that punitive attitudes toward crime and confidence in estimation significantly contributed to higher estimates of recidivism risk, whereas sex, age, and fear of crime did not. These results suggest that the public overestimates the recidivism rate of sex offenders and that simply presenting a base rate is not sufficient for risk communication. Practical implications and future research directions are also discussed.

마약류 사범 재범방지를 위한 방안 연구

The purpose of this study is to examine the changes, contents, and evaluation of drug policies, focusing on the U.S. drug court and Japan's DARC and then to present the rapidly increasing problems of drug offenders in Korea and measures to prevent their recidivism. It is to present the problem of rapidly increasing drug offenders in Korea and measures to prevent their recidivism. In particular, the characteristics of drug crimes are difficult to quit due to their addiction and dependence, and as a result, they show a high recidivism rate even after returning to society after being released from prison. In the case of the United States, drug courts have been established to reduce the recidivism rate of drug offenders and reduce costs, Japan, DARC, a treatment facility established by actual drug addicts to prevent recidivism of drug offenders, is being operated. Korea also needs a control tower that will serve as an integrated and systematic management system, and the establishment of a drug court will be the solution.

Offence type and neurodiversity: A comparison of 12‐17‐year‐old boys charged with a criminal offence by diagnosis of autism spectrum disorder, attention deficit hyperactivity disorder or both

Autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD) have been evidenced as common among adolescents with delinquent behaviour. Less is known, however, about the relationship between these disorders and type of alleged offence, when the adolescent is involved with the criminal justice system. Our aim was to investigate whether the type of alleged index offences among 12-17-year-olds differ between those diagnosed with ASD, ADHD or ASD+ADHD. The sample was selected for ASD and/or ADHD diagnoses from a database of all pre-trial forensic psychiatric and psychological assessments of male adolescents of 12-17years old in the Netherlands for the years 2013 and 2014. For each record, independent researchers scored a 76-item checklist encompassing health and offending characteristics. Sixty-nine of the 1799 pre-trial assessments of these male adolescents had a diagnosis of ASD, 90 of ADHD and 29 had been diagnosed with both; these 188 cases formed our sample. The rate of sex offences was significantly higher among those with ASD (N=20, 29%) than those with ADHD (N=10, 11%) or both (N=4, 14%; Fisher's exact test=8.54; p=0.014). By contrast, the rate of property offences without violence was significantly higher among those with ADHD (N=22, 24%) than those with ASD (N=4, 6%) or both (N=5, 17%; Fisher's exact test=10.50, p=0.004), whereas violent offending rates did not differ between the three groups. Specific offence types were not equally distributed among male adolescents with different psychiatric diagnoses. In our sample of male adolescents suspected of an offence nearly one-third of those diagnosed with ASD were convicted of a sex offence, suggesting highly specialised needs for further assessment and intervention. Among those diagnosed with ADHD, significantly more adolescents were charged with non-violent property offences. Such unequal distribution of alleged offence types among adolescents with different psychiatric diagnoses justifies tailor-made attention for offending adolescents with different psychiatric diagnoses.

Do Sanctions Affect Undetected Sexual Offending?

Undetected sexual offending creates challenges for risk assessment since estimated sexual recidivism rates are based on documented charges or convictions. Courts and other stakeholders may be primarily interested in the true risk for sexual reoffense and not simply risk for detected sexual offenses. Attempts to study and quantify the rate of undetected sexual offending have resulted in a wide variety of estimates. In this study, we explore whether sanctions imposed for detected sexual offenses increase the detection rate of subsequent offenses, and thereby suppress undetected sexual offending in an exceptionally high-risk sample who were ultimately committed as Sexually Violent Persons. Results indicate the detection rate of sexual offenses increased following an initial sanction, subsequently decreasing the proportion of undetected to detected offending. This effect only occurred after the first sanction. Overall, the sample had a high detection rate and spent little time in the community before subsequent arrests. These results differ from other reports that high rates of sexual offenses go undetected.

Disrupting the Trauma- To - Prison Pipeline For Justice-Involved Young Women Victimized By Violence.

Rates of aggressive offending among Justice-Involved Young Women (JIYW) have increased over the past few decades. Yet, there is little discourse, research, or intervention to address it among young women. This study hypothesized that a higher capacity for self-restraint measured on the Weinberger Adjustment Inventory (WAI) scale among 14-18-year-old JIYW would moderate the relationship between the exposure to violence and serious aggressive offending. The pathways to desistance project, a multi-site, longitudinal study, included a sample of JIYW aged 14-18 years old (n = 184). The baseline data were analyzed using linear multiple regression. After controlling for two variables, race and neighborhood conditions, the overall model was significant (F = 8.31 (df = 7,176), p = .001). The predictor variables (exposure to violence and self-restraint) explained 25% of the outcome variable (level of aggressive offending). The moderation result was significant such that higher self-restraint weakens the relationship between exposure to violence and aggressive offending (B = - 0.01, t (176) = -2.39, p = .018). This study highlights the need to disrupt the trauma- to- prison pipeline by enhancing positive social skills in a trauma-responsive manner, which could mitigate the effect of exposure to violence among JIYW.

The impact of developmental language disorder in a defendant's description on mock jurors' perceptions and judgements.

While it has been posited that young people with language needs may be viewed more negatively (e.g., as more rude, less cooperative) than those without language needs, the impact of knowing about a person's language needs on others' perceptions has yet to experimentally tested. To examine whether the presence of a developmental language disorder (DLD) diagnosis in a defendant's information would affect mock juror ratings of guilt, sentence length, credibility and blameworthiness. A total of 143 jury eligible participants read a vignette of a non-violent crime. Half of the participants (N = 73) were told the defendant has a diagnosis of DLD, while half (N = 70) were not told. Preregistered analyses found that DLD information affected ratings of credibility and blameworthiness, though not judgements of guilt or sentence length. Unregistered content analyses were applied to the justifications participants gave for their ratings: these suggested that participants who did not have the DLD information judged the defendant more on his personality and attitude, and drew more links to his (perceived) background, while participants who received the DLD information condition made more reference to him having cognitive problems. Unlike in previous studies of the impact of autism information, information about a defendant's DLD did not affect mock jurors' likelihood of finding them guilty, or lead participants to give longer sentences. However, our findings suggest knowing a person has DLD does affect others' perceptions of credibility and blameworthiness. What is already known on the subject There is already evidence that some conditions that affect communication, specifically autism, also affect juror perceptions. Research also shows that knowing whether or not a defendant has autism influences how jurors rate defendants. However, autism is not the only condition that is relevant to juror perceptions, as we also know that a high rate of young offenders have language needs, and many have language profiles like DLD. What this paper adds to existing knowledge There is little research on how behaviours associated with DLD impact others' perceptions. This study reports the impact of knowing about a defendant's DLD on juror perceptions, investigating whether knowing about DLD improves judgements on guilt, sentencing lengths, credibility and culpability. Beyond the content of youth offending, this study suggests behaviours associated with DLD lead people to form more negative judgements about youth with DLD. This is important because there is still a lack of awareness of DLD both in- and outside the criminal justice system. What are the potential or actual clinical implications of this work? This study shows that knowing about a person's DLD has largely positive effects on others' perceptions of them. This implies that recognizing undetected language needs in young offenders, and supporting colleagues and members of the public to know what DLD is and how it affects people, is critical for youth with DLD to be judged fairly. This study will support the case for raising awareness of vulnerability within the youth justice population, and will assist in clinicians evidencing the need for our roles in justice settings.

Evaluating interventions for violence prevention using linked MoJ-DfE data: a feasibility study.

ObjectiveTo assess the feasibility of using linked education and offending data (from the National Pupil Database, Department for Education and the Police National Computer, Ministry of Justice) to identify matched control groups to evaluate violence prevention interventions. ApproachWe simulated a plausible intervention (multi-systemic therapy aimed at high-risk young people living in high-risk areas) aimed at reducing the rate of serious violent offending between the ages of 15 and 18 years. We separately simulated an intervention in London and one outside London. We selected eligible individuals aged 14 years for inclusion in the intervention group, modelled the predictors of serious violent offending. then used two different matching algorithms – prognostic score matching and (coarsened) exact matching – to identify matched controls. We compared their effectiveness by measuring the observed rates of serious violence in the two groups. ResultsThe dataset we used dataset included just under 1.5 million individuals born between 1st September 1995 and 31st August 1998 with complete data. Consistent with previous research, factors associated with the risk of serious violence included deprivation, geographical region, sex, ethnicity, attainment, school absence and exclusion, being in care of the local authority or classified as in need, as well as prior offending and some school-level factors. Exact matching or coarsened exact matching was more successful than prognostic score matching at selecting suitable control groups, both within and outside London. Within London, exact matching on sex, ethnicity and any offending before age 14 gave a suitable control group; outside London it was necessary to match on a few additional characteristics in order to obtain well-balanced groups. ConclusionThe linked dataset can feasibly be used to generate suitable matched control groups to evaluate violence prevention interventions; exact matching on key characteristics is potentially the optimal solution. Its utility in practice will depend on regular data updates and having an efficient mechanism for accessing the data for such purposes.

Criminal mutilation homicides in Japan: Corpse dismemberment and disposal pattern types, and offender characteristics.

This study examined the offender characteristics of criminal mutilation homicides in Japan for offender profiling. The current sample (N= 108) showed that the most typical offender was a male, in his 30s (age that observed most often), one-person, and acquainted with the victim. This study highlighted that the cases of mutilation homicide differed in comparison with the regular homicide group in terms of the victim-offender (VO) relationship and the number of offenders. Furthermore, the multiple correspondence analysis classified mutilation homicides into four behavioral pattern types based on two dimensions (level of "efforts of corpse dismemberment" and "efforts of corpse disposal"). In the first type "high evidence destruction effort (n = 29)", having the greatest efforts to destroy evidence, all offenders were men. The rates of no VO relationship and serial murders were higher. In the second type "convenient disposal (n = 32)", likely to abandon victim body in home and trash, the rate of female offenders who assaulted family members was statistically significantly higher among the four types. In the third type "high geographic distance (n = 23)", traveling long distances for corpse disposal, the percentage of cases by co-offenders was likely to be higher than in the other types. Lastly, the offenders in "low evidence destruction effort (n = 24)" were likely to kill other acquaintances and have the least efforts for corpse dismemberment and disposal. From these results, the criminal profilers can estimate mutilation homicide offenders on the basis of efforts of corpse dismemberment and disposal.

Do common risk factors for violence generalize across ethnicity?

ABSTRACT There are concerns that risk assessment instruments may exacerbate racial/ethnic disparities in the justice system. Risk factors measured by Western-normed tools may not accurately reflect the life experiences of non-White offenders. Systemic biases may also be baked into tools if certain risk items are unfairly associated with race/class. Despite these concerns, few studies have rigorously examined how common risk factors for violence compare across racial/ethnic groups in the U.S. This cross-sectional study addressed these gaps by examining cross-cultural differences in the performance of 10 common historical risk factors. White, Hispanic, and Black adults (N = 270) sampled from Amazon Mechanical Turk completed risk ratings and self-reported lifetime violence/offending. Overall, risk scores performed relatively well in the strength and form of their associations with offending across groups. However, rates of general offending were consistently lower for Hispanics and Blacks compared to similar-scoring Whites. In addition, several risk domains overclassified high-scoring Hispanics and Blacks but were better calibrated with low-scoring minority groups. Although our results reveal modest evidence of racial bias, definite conclusions about the universality of similar risk factors may be premature given mixed findings of overestimation/over-classification. Results have implications for fairness in risk assessment and underscore the need for further prospective investigations.

Psychopathy assessments in forensic psychiatry: a pilot study of Canadian practitioners’ use and perceptions

PurposeThe purpose of this study was to survey practitioners’ use and perceptions of psychopathy assessments in Canadian forensic psychiatric settings. Psychopathy assessments are widely used in forensic settings to inform decisions about sentencing, placement, rehabilitation and parole. Recent empirical evidence suggests that the utility of psychopathy assessments might be overestimated, leading to a debate about their legal and ethical justification. However, one shortcoming of these discussions is that they rely heavily on anecdotal evidence about how exactly psychopathy assessments influence forensic decisions, due to a general lack of survey data on field uses. Some data are available in European and American contexts, but little is known about Canadian clinical practice.Design/methodology/approachTo address this shortcoming in the literature, the authors conducted a pilot study of practitioners in forensic psychiatric units in Ontario (N = 18), evaluating their use of psychopathy assessments, reporting habits and their perceptions of psychopathic offenders.FindingsPractitioners reported that they primarily used the Hare Psychopathy Checklist-Revised (PCL-R) as a risk assessment tool, often in combination with other tools. Most clinicians reported using psychopathy assessments infrequently, that there was a low base rate of psychopathic offenders and their attitudes and beliefs about psychopathy were generally consistent with the empirical literature.Originality/valueThis pilot study provides novel insights into the use of psychopathy assessments in Canadian forensic psychiatry with the potential to inform current debates.

Raising the minimum age of criminal responsibility to 14 years.

At 10 years of age, Australia and New Zealand have one of the lowest ages for criminal responsibility across the developed world. Evidence shows that children under 14 years of age are not mature enough to be considered criminally responsible people. Children of this age do not have the ability to advocate for themselves within the criminal justice system, which is systematically biased in how it deals with the youngest offenders. The over-representation of Indigenous youth within the justice system is seen at its most extreme in the 10-14 years age group, and contact with the criminal justice system at this age is strongly associated with re-offending, and is considered 'criminogenic'. Raising the minimum age of criminal responsibility is likely to decrease overall rates of youth offending, and reduce the over-representation of Indigenous children at all points of contact with the criminal justice system.

Describing Patterns of Known Domestic Abuse Among Different Ethnic Groups.

Domestic abuse perpetration remains a major threat to public health, safety and wellbeing, causing serious harms and contributing significantly to overall crime globally. In the United Kingdom, research links the crime type to high economic and social costs. In the last 10 years, our collective knowledge of domestic abuse has grown in conjunction with its prioritisation in government policy. Several innovative studies have built a picture of the most serious cases and overall patterns of abuse but to date, examination of these trends by ethnic groups has been limited despite increasing attention to disproportionality in racially minoritised communities in criminal justice system outcomes. In this article we aimed to address this issue through the analysis of 150,000 domestic abuse records kept by police forces in England. Using descriptive statistics, we examined the relative distributions of different ethnicities by suspected offending rate, investigative outcome and crime harm. We found two patterns of note: firstly, that suspects from several categories of minoritized communities are consistently over-represented compared to the White British population among most harmful cases, and secondly, that in Asian communities, offences are less frequently “solved.” We discuss the implications for future research and practice.

The role of symptoms of psychopathy in persistent violence over the criminal career into full adulthood

Purpose: The extant criminal career literature supports the assertion that risk factors for violent and non-violent offending are the same. However, such studies have not examined the role of psychopathic personality disturbance (PPD) in the development of persistent violence across the life course. A situational action theory perspective was used to help illustrate the utility of PPD in explaining persistent violent offending. Methods: Convictions for violent offense and non-violent offenses were measured for Canadian male (n = 262) and female (n = 64) offenders at each year between ages 12 and 28. Semi-parametric group-based modeling was used to identify joint trajectories of violent and non-violent offending. Symptoms of adolescent PPD and other criminogenic risk factors were also measured. Results: Through the joint trajectory model, five violent and five non-violent trajectories were identified. PPD emerged as a strong predictor of membership in the trajectory associated with chronic violent offending but lower levels of non-violent offending. Conclusions: Contrary to earlier criminal career research, the most persistent violent offenders were not also involved in the highest rate of general offending. Theories that help explain why individuals are involved in persistent violence are needed. Incorporating PPD into such a theoretical framework appears necessary.

What Works (or Does Not) in Community Risk Management for Persons Convicted of Sexual Offenses? A Contemporary Perspective.

Contemporary data from the United States show that rates of sexual offending and reoffending have been in steady decline for decades. Nonetheless, nonprofessionals continue to view sexual violence as a community safety issue fraught with risk and uncertainty. The past 30 years have been witness to considerable research and practice in the assessment, treatment, and risk management of persons who have sexually offended. Gains have also been made in regard to prevention and citizen education. Modern day technologies include actuarial risk assessment instruments, measures of criminogenic need and treatment progress, refinements to treatment processes, and the establishment of evidence-based models. Legislative authorities in the United States and elsewhere have also attempted to affect risk in the community with, perhaps, lesser degrees of success. This article reviews current policies and practices, with a specific focus on what happens when offenders are released to the community (e.g., how public policies intended to track offenders and/or restrict their movements can negatively affect community reintegration). Comprehensive approaches to community sexual offender management are examined in addition to suggestions of unique approaches intended to ensure citizen buy-in and engagement.

Color, Loan Approval, and Crimes: The Dark Side of Mortgage Market Deregulation

This paper documents that racial differences in credit distribution during a general mortgage credit expansion can lead to unintended negative consequences on crime. Exploiting a federal mortgage market deregulation, we find a significant increase in mortgage approval to white borrowers, while the approval rate to black borrowers is unchanged. More importantly, the local housing boom induced by this credit expansion leads to an increase in money-related crime rates of black offenders. The results highlight an unintended adverse consequence of credit expansion on the welfare of the minorities.

Interactions with youth justice and associated costs for young people with speech, language and communication needs.

Individuals with speech, language and communication needs (SLCN) are at greater risk of contact with the criminal justice system. Diagnosis and appropriate treatment of SLCN reduces these risks, leading to better life outcomes for the individual as well as broader social and economic benefits. These youth represent a particularly high-priority group for research into language deficits, as the juvenile justice system involves situations with a high risk or serious consequences that rely upon the application of effective language skills. Whilst some studies have established some gains in speech and communication from speech pathology (SP) interventions during custody, there is limited evidence on the long-term impact of these gains following release from custody. Similarly, few studies have directly measured the cost savings associated with early SP on subsequent youth antisocial behaviour and crime. To estimate the youth antisocial behaviours, youth justice (YJ) contacts and associated costs (from a justice perspective) of childhood SLCN. Using 12 years of data from a longitudinal study of Australian children and young people, we employ a panel fixed-effects model to explore the relationship between SLCN and youth antisocial behaviour and youth offending between 12 and 17 years of age. Using these results, we estimate the cost of SLCN and subsequent cost savings associated with identification of SLCN. The results showed that the annual cost of SLCN to the YJ system (exchange rate as at 9 December 2020) is A$875 (95% confidence interval (CI) = A$195, A$1916) (US$$649, €536, £485) per person who participates in youth crime, which is due to higher rates of youth antisocial behaviour and youth offending. Identification of SLCN (defined by SP treatment) appears to have a positive impact on youth antisocial behaviour and crime, mediated through improved language and communication. On average, young people with a history of 'identified' SLCN incur A$188 (95% CI = A$42, A$412) lower YJ costs (US$$140, €105, £115), compared with the same individual, before identification. Over the lifetime of the individual, this equates to A$9.2 million (95% CI = A$2.05 million, A$20.2 million) (US$$6.8 million, €5.6 million, £5.1 million) cost savings to the YJ system (A$3389 per person with SLCN) (2020 Australian dollars) (US$2513, €2074, £1880). Overall, the findings revealed that young people with SLCN have an elevated risk of youth antisocial behaviour and crime. However, the identification of SLCN (and subsequent treatment) leads to changes in the offending risk trajectory for these individuals, resulting in lower rates of youth antisocial behaviour and consequently lower rates of crime and its associated justice costs. What is already known on the subject It is well documented in the literature that young people in contact with the justice system have much higher rates of previously undiagnosed SLCN than those of the general population. There is less known about whether the identification of SLCN (and subsequent treatment) leads to changes in the offending risk trajectory for these individuals, leading to lower rates of youth antisocial behaviours and crime. What this paper adds to existing knowledge This study uses a longitudinal survey of 5000 children and young people to track the antisocial behaviour and crime-risk trajectory of children and young people with SLCN. The study finds evidence that young people with 'identified' SLCN report less juvenile antisocial behaviour and lower YJ contacts after intervention. The potential lifetime cost savings associated with intervention is A$9.2 million (95% CI = A$2.05 million, A$20.1 million) (US$$6.8 million, €5.6 million, £5.1 million). What are the potential or actual clinical implications of this work? The findings of this study can quantify the effects (in terms of cost savings to the justice system) of the early identification and subsequent intervention for young people with SLCN.