Effect of Methylphenidate on Resting-State Connectivity in Adolescents With a Disruptive Behavior Disorder: A Double-Blind Randomized Placebo-Controlled fMRI Study.

Some studies suggest that methylphenidate (MPH) might be an effective treatment for antisocial and aggressive behavior in adolescence. However, little is known about the mechanism of action of MPH in adolescents with this kind of psychopathology. MPH is a dopamine and norepinephrine reuptake inhibitor and thus it is likely to affect dopaminergic mesocorticolimbic pathways. This is the first study to investigate the effect of MPH on resting-state connectivity of three mesolimbic seed regions with the rest of the brain in clinical referred male adolescents with a disruptive behavior disorder (DBD). Thirty-six male DBD adolescents and 31 male healthy controls (HCs) were included. DBD subjects were randomly allocated to a single dose of MPH (DBD-MPH, n = 20) or placebo (DBD-PCB, n = 16). Seed-based resting-state functional connectivity of the nucleus accumbens (NAcc), amygdala, and ventral tegmental area (VTA) with the rest of the brain was compared between groups. The NAcc seed showed increased connectivity in DBD-PCB compared to HC with the occipital cortex, posterior cingulate cortex (PCC), precuneus, and inferior parietal lobule (IPL) and increased connectivity in DBD-PCB compared to DBD-MPH with occipital cortex, IPL, and medial frontal gyrus. The amygdala seed showed increased connectivity in DBD-PCB compared to HC with the precuneus and PCC. The VTA seed showed increased connectivity in the DBD-MPH compared to the DBD-PCB group with a cluster in the postcentral gyrus and a cluster in the supplementary motor cortex/superior frontal gyrus. Both NAcc and amygdala seeds showed no connectivity differences in the DBD-MPH compared to the HC group, indicating that MPH normalizes the increased functional connectivity of mesolimbic seed regions with areas involved in moral decision making, visual processing, and attention.

Maternal verbal aggression in early infancy and child's internalizing symptoms: interaction by common oxytocin polymorphisms.

Genetic predisposition of social sensitivity might affect vulnerability to develop psychopathology after early life stress exposure. This study examined whether maternal verbally aggressive behavior in early infancy interacts with oxytocin polymorphisms in developing internalizing symptoms at ages 5-6 and 11-12. In the Amsterdam-Born-Children-and-their-Development (ABCD) study, a large observational, population-based birth cohort, maternal verbally aggressive behavior was assessed in the 13th postnatal week by a self-report questionnaire. Internalizing symptoms at age 5-6 were assessed by maternal report (N = 969) and internalizing symptoms at age 11-12 were assessed by self-report (N = 750). Data on oxytocin receptor polymorphisms rs53576 and rs2268498 and oxytocin polymorphisms rs2740210 and rs4813627 were collected. If the child was carrier of rs2740210 CA/AA polymorphism, exposure to maternal verbally aggressive behavior (10.6%) was positively associated with general anxiety at age 5-6 and emotional symptoms at age 11-12 (p for interaction = 0.011 and p = 0.015, respectively). If the child was carrier of rs4813627 GG (wild type), exposure to maternal verbally aggressive behavior was negatively associated with anxiety sensitivity and emotional symptoms at age 11-12 (p for interaction = 0.011 and p = 0.022, respectively). After exposure to maternal verbally aggressive behavior in early infancy, oxytocin polymorphisms may partly determine a child's vulnerability to internalizing symptoms.

Common oxytocin polymorphisms interact with maternal verbal aggression in early infancy impacting blood pressure at age 5-6: The ABCD study.

Early life stress has been shown to contribute to alterations in biobehavioral regulation. Genetic make-up, especially related to social sensitivity, might affect the child's vulnerability to these alterations. This study examined whether maternal verbally aggressive behavior in early infancy interacts with oxytocin polymorphisms in changing resting cardiovascular outcomes at age 5-6. In the Amsterdam-Born-Children-and-their-Development-(ABCD)-study, a large prospective, observational, population-based birth cohort, maternal verbally aggressive behavior was assessed in the 13th postnatal week (range 11-25 weeks, SD 2 weeks) by a questionnaire (maternal self-report). Indicators of resting cardiac autonomic nervous system activity (sympathetic drive by pre-ejection period, parasympathetic drive by respiratory sinus arrhythmia), heart rate, and blood pressure were measured at age 5-6 years. Data on oxytocin receptor gene polymorphisms rs53576, rs2268498 and oxytocin polymorphisms rs2740210, rs4813627, were collected (N = 966 included). If the child was carrier of the rs53576 GG variant, exposure to maternal verbally aggressive behavior (10.6%) was associated with increased systolic blood pressure at age 5-6 (B = 4.9 mmHg,95% CI[2.2;7.7]). If the child was carrier of the rs2268498 TT/TC variant, exposure to maternal verbally aggressive behavior was associated with increased systolic blood pressure at age 5-6 (B = 3.0 mmHg,95%CI[1.0:5.0]). No significant interactions of maternal verbally aggressive behavior with oxytocin gene polymorphisms on heart rate or cardiac autonomic nervous system activity were found. In conclusion, oxytocin receptor gene polymorphisms may partly determine a child's vulnerability to develop increased systolic blood pressure after being exposed to maternal verbally aggressive behavior in early infancy.

Psychotic experiences and trauma predict persistence of psychosocial problems in adolescence.

Psychosocial problems during adolescence are heterogenic, rather common, and unstable. At the same time, they are associated with an elevated risk of developing psychiatric disorders later in life. We aimed to describe the trajectories of psychosocial problems during adolescence and examine potential markers of persistence as compared to remission of these problems. At baseline, 1841 adolescents (51.4% female) were included. Of these adolescents, 1512 (mean age = 12.6 [range 11-14 years]; 52.8% female) completed the first and second self-report questionnaires on psychosocial problems (measured with the Strengths and Difficulties Questionnaire), psychotic experiences, trauma, self-esteem and somatic symptoms at two time points over a 1-year period. Regression analyses were used to examine the association between potential predictors and the trajectory of psychosocial problems (remitting versus persistent). Four trajectories were distinguished: 75.6% of the sample showed no problems (the 'none' trajectory), 11.9% were in a 'remitting' trajectory, 9.7% were in an 'incident' trajectory and 2.8% were in the 'persistent' trajectory. Hallucinatory experiences and trauma at baseline were significantly associated with persistence of psychosocial problems compared to those with remitting psychosocial problems. Low rather than high self-esteem was associated with lower risk for persistent problems. Risk of persistence of psychosocial problems increased with accumulation of predictors. Psychotic, especially hallucinatory, experiences and trauma predict persistence of psychosocial problems in adolescents. This underlines the need to assess psychotic experiences and trauma in mental health screening programs.

Psychotic experiences among ethnic majority and minority adolescents and the role of discrimination and ethnic identity.

PURPOSE: Research shows that the prevalence of psychiatric problems is higher in ethnic minority youth compared to native youth. This school-based screening study of early adolescents' mental health in the Netherlands examined differences in prevalence of psychotic experiences in ethnic minority youth compared to their Dutch peers. Moreover, we investigated the association between psychotic experiences, ethnic identity, and perceived discrimination. METHODS: A cohort of 1194 ethnic majority and minority adolescents (mean age 13.72, SD 0.63) filled-out questionnaires on psychotic experiences (including delusional and hallucinatory experiences), perceived group and personal discrimination, and ethnic identity. RESULTS: Apart from lower levels of hallucinatory experiences in Turkish-Dutch adolescents, prevalence of psychotic experiences did not differ between ethnic minority and majority adolescents. Perceived personal discrimination was associated with the presence of psychotic experiences (including delusional and hallucinatory experiences) (OR 2.30, 95% CI 1.22-4.34). This association was stronger for delusional experiences (OR 2.94, 95% CI 1.43-6.06) than for hallucinatory experiences (OR 1.65, 95% CI 0.73-3.72). No significant associations were found between perceived group discrimination and psychotic experiences. A weak ethnic identity was associated with higher risk for reporting psychotic experiences (OR 2.04, 95% CI 1.14-3.66), particularly hallucinatory experiences (OR 3.15, 95% CI 1.54-6.44). When looking at specific ethnic identity categories, marginalization, compared to separation, was associated with a threefold risk for reporting psychotic experiences (OR 3.26, 95% CI 1.33-8.03). Both marginalisation (OR 3.17, 95% CI 1.04-9.63) and assimilation (OR 3.25, 95% CI 1.30-8.13) were associated with a higher risk for hallucinatory experiences. CONCLUSIONS: These results underline the protective effect of ethnic identity against mental health problems. Future research should focus on interventions that focus on strengthen social identity.

Overview of European forensic youth care: towards an integrative mission for prevention and intervention strategies for juvenile offenders.

All over Europe youth delinquency is decreasing; our understanding of the factors related to juvenile delinquency and the characteristics of effective forensic youth care has increased substantially. However, effective prevention and intervention strategies are not always employed due to financial, demographical and socio-political challenges countries face, while the burden of mental health in juvenile justice populations is high. With this commentary, we highlight the importance of international collaboration to set out a direction to improve forensic youth care, to bundle our strengths and overcome our challenges. It is a continuation of the course that was set out by Doreleijers and Fegert (Child Adolesc Psychiatry Ment Health 5:20, 2011), in their editorial they highlighted the importance of collaboration and presented an overview of the state of the art on forensic youth care in eight European countries (and Russia). With this manuscript, we present an overview of statistics in juvenile justice of all European countries and present an integrated mission statement for forensic youth care, which was formulated in a keynote debate at the 6th biennial congress of the European Association for Forensic Child and Adolescent Psychiatry, Psychology and other involved professions (EFCAP).

The role of adverse childhood experiences and mental health care use in psychological dysfunction of male multi-problem young adults.

Adverse childhood experiences (ACEs) are associated with severe problems later in life. This study examines how eleven types of ACEs and mental health care use history are related to current psychological dysfunction among multi-problem young adults. A sample of 643 multi-problem young adult men (age 18-27) gave informed consent for us to collect retrospective regional psychiatric case register data and filled out questionnaires. ACEs were highly prevalent (mean 3.6, SD 2.0). Logistic regression analysis showed that compared with participants who experienced other ACEs, participants who experienced psychological problems in their family and grew up in a single-parent family were more likely to have used mental health care, and physically abused participants were less likely to have used mental health care. Linear regression analyses showed a dose-response relationship between ACEs and internalizing and externalizing problems. Linear regression analyses on the single ACE items showed that emotional abuse and emotional neglect were positively related to internalizing problems. Emotional and physical abuse and police contact of family members were positively related to externalizing problems. While multi-problem young adults experienced many ACEs, only a few ACEs were related to mental health care use in childhood and adolescence. Long-term negative effects of ACEs on psychological functioning were demonstrated; specifically, emotional abuse and emotional neglect showed detrimental consequences. Since emotional abuse and emotional neglect are not easily identified and often chronic, child health professionals should be sensitive to such problems.

Transdiagnostic school-based intervention for adolescents with early persistent psychiatric symptoms: An initial single-group effect study.

AIM: Mental health intervention programs for adolescents generally focus on specific symptoms, such as anxiety or depression. Psychiatric symptoms in adolescence are often heterogeneous, transient and shift over time. These characteristics require a transdiagnostic approach with emphasis on positive psychological development. This study aimed to examine the feasibility and effectiveness of Mastermind, a novel transdiagnostic intervention targeting general underlying mechanisms of psychiatric symptoms in adolescents. METHODS: Adolescents were screened for psychiatric symptoms with the Strengths and Difficulties Scale in a school-based program in two consecutive years. Adolescents were eligible for the intervention when they had psychiatric symptoms at both screening assessments. Participants received an 8 weeks program containing elements of empowerment and attention bias modification. Psychiatric symptoms were assessed before the start of the intervention, immediately after the intervention and at 6-month follow-up. RESULTS: A total of 241 adolescents were eligible for the intervention, of whom 80 participated (mean age 12.5 years). Generalized Estimating Equations, adjusted for gender and educational level, showed a decrease of negative attention bias, psychotic, anxiety, depression and behavioural symptoms immediately after intervention. The effects remained at follow-up. Overall risk for psychiatric disorders, distress and low self-esteem had decreased at follow-up. CONCLUSIONS: A simple two-step school-based screening can identify adolescents with persistent psychiatric symptoms. The Mastermind transdiagnostic group intervention may be effective to reduce psychiatric symptoms, enhance self-esteem and lower the risk for developing psychiatric disorders.

Antisocial Behavior and Victimization Over 2-Year Follow-Up in Subgroups of Childhood Arrestees.

Not only are childhood onset offenders at high risk of becoming serious persistent offenders, they are also at high risk of becoming victimized themselves. Furthermore, studies in the general population suggest that a combined perpetrator-victim group can be distinguished from a perpetrator-only and a victim-only group on individual and family risk factors. The current study investigated the co-occurrence of offending and victimization among first-time arrestees and the 2-year predictive value of previously found clusters of dynamic risk factors of offending. Childhood first-time arrestees (N = 308; Mage = 10.3, SD = 1.45) were clustered into three groups based on dynamic risk factors of offending in the individual, peer, school, and family domains: a pervasive high, an externalizing intermediate, and a low problem group. Police records and self-report data on re-offending and victimization of these children were collected over a 2-year follow-up period. Compared with the low problem group, the prevalence of re-offending was higher in both the externalizing intermediate group and the pervasive high group. The pervasive high group was most likely to display co-occurring future antisocial behavior and victimization. These findings emphasize that attention should be paid to victimization in addition to future antisocial behavior, especially if additional internalizing and family problems are present. Furthermore, the differences in re-offending and victimization between subgroups of childhood onset offenders stress the need for specific interventions tailored to the risk profile of a child.

Effects of Methylphenidate During Fear Learning in Antisocial Adolescents: A Randomized Controlled fMRI Trial.

OBJECTIVE: Although the neural underpinnings of antisocial behavior have been studied extensively, research on pharmacologic interventions targeting specific neural mechanisms remains sparse. Hypoactivity of the amygdala and ventromedial prefrontal cortex (vmPFC) has been reported in antisocial adolescents, which could account for deficits in fear learning (amygdala) and impairments in decision making (vmPFC), respectively. Limited clinical research suggests positive effects of methylphenidate, a dopamine agonist, on antisocial behavior in adolescents. Dopamine is a key neurotransmitter involved in amygdala and vmPFC functioning. The objective of this study was to investigate whether methylphenidate targets dysfunctions in these brain areas in adolescents with antisocial behavior. METHOD: A group of 42 clinical referred male adolescents (14-17 years old) with a disruptive behavior disorder performed a fear learning/reversal paradigm in a randomized double-blinded placebo-controlled pharmacologic functional magnetic resonance imaging study. Participants with disruptive behavior disorder were randomized to receive a single dose of methylphenidate 0.3 to 0.4 mg/kg (n = 22) or placebo (n = 20) and were compared with 21 matched healthy controls not receiving medication. RESULTS: In a region-of-interest analysis of functional magnetic resonance imaging data during fear learning, the placebo group showed hyporeactivity of the amygdala compared with healthy controls, whereas amygdala reactivity was normalized in the methylphenidate group. There were no group differences in vmPFC reactivity during fear reversal learning. Whole-brain analyses showed no group differences. CONCLUSION: These findings suggest that methylphenidate is a promising pharmacologic intervention for youth antisocial behavior that could restore amygdala functioning. CLINICAL TRIAL REGISTRATION INFORMATION: Fear Conditioning During Specific Conditions in Antisocial Adolescents: A Neuroimaging Study. http://www.trialregister.nl/trialreg/index.asp; NTR4088.

Multidimensional family therapy in adolescents with a cannabis use disorder: long-term effects on delinquency in a randomized controlled trial.

BACKGROUND: Substance use and delinquency are considered to be mutual risk factors. Previous studies have shown that multidimensional family therapy (MDFT) is effective in tackling both conditions on the short term. The current study examines the long-term effects of MDFT on criminal offending. METHODS: 109 adolescents with cannabis use disorder and comorbid problem behavior were randomly assigned to either MDFT or cognitive behavioral therapy (CBT). Police arrest data were collected for 6 years: 3 years prior to and 3 years after treatment entry. Using survival analysis and repeated measure General Linear Models (rmGLM), the two treatment groups were compared on number of arrests, type of offence, and severity of offence. Moderator analyses looking at age, disruptive behavior disorders, history of crimes, family functioning, and (severe) cannabis use were conducted (rmGLM). RESULTS: While police arrest rates increased in the 3 years before treatment, the rates decreased substantially after the start of both treatments. No differences were found between the treatment groups with respect to either time to first offence from the start of the treatment or changes in frequency or severity of offending over time. A treatment effect trend favoring MDFT was found for property offending in the subgroup of adolescents with high baseline-severity of cannabis use. CONCLUSIONS: Across a follow-up period of 3 years, MDFT and CBT were similarly effective in reducing delinquency in adolescents with a cannabis use disorder.Trial registration ISRCTN51014277, Registered 17 March 2010-Retrospectively registered, http://www.isrctn.com/ISRCTN51014277.

Effect of excessive infant crying on resting BP, HRV and cardiac autonomic control in childhood.

OBJECTIVE: Early life stress has been shown to influence the developing autonomic nervous system. Stressors in infancy may program the autonomic nervous system resting state set point, affecting cardiovascular function in later life. Excessive crying may be an indicator of increased stress arousal in infancy. We hypothesized that excessive infant crying is related to altered cardiac autonomic nervous system activity and increased blood pressure at age 5-6 years. METHODS: In the Amsterdam Born Children and their Development study, excessive crying, maternal burden of infant care and maternal aggressive behavior in the 13th week after birth (range 11-16 weeks) were reported using questionnaires. Blood pressure, heart rate, heart rate variability and indicators of cardiac autonomic nervous system activity (sympathetic drive by pre-ejection period, parasympathetic drive by respiratory sinus arrhythmia) were measured at age 5-6 years during rest. Inclusion criteria were singleton birth, term-born, and no reported congenital or cardiovascular problems (N = 2153 included). RESULTS: Excessive crying (2.8%) was not associated with resting heart rate, heart rate variability, pre-ejection period, respiratory sinus arrhythmia nor with blood pressure at age 5-6 years. CONCLUSIONS: Excessive infant crying as an indicator of increased stress arousal does not seem to be related to resting activity of the autonomic nervous system or blood pressure at age 5-6. Potential associations may become visible under stressed conditions.

Peer status in relation to psychotic experiences and psychosocial problems in adolescents: a longitudinal school-based study.

Social exclusion is related to many adverse mental health outcomes and may be particularly harmful for mental health in adolescence when peer relations become very important. This study examined associations between low peer status and psychotic experiences, psychosocial problems and short-term courses of these symptoms. A school-based sample of adolescents (N = 1171) was investigated in 2 consecutive years using the 16-item Prodromal Questionnaire and the self-report and teacher-report version of the Strengths and Difficulties Questionnaire (SDQ). Peer status was measured in the second year with positive and negative peer nominations of classmates. Low peer status was, after adjusting for gender, ethnic minority status and level of education, associated with more psychosocial difficulties with a persistent course and a higher level of psychotic experiences. Of all peer status groups, being neglected had the strongest associations with mental health problems. The results of this study show that social exclusion in adolescence is related to psychotic experiences and psychosocial problems, emphasizing the importance of belonging to a social group. Customized prevention programs at individual, family and school level should target causes and consequences of social exclusion.

A multimodal day treatment program for multi-problem young adults: study protocol for a randomized controlled trial.

BACKGROUND: Effective interventions for young adults with severe, multiple problems - such as psychosocial and psychiatric problems, delinquency, unemployment and substance use - are scarce but urgently needed in order to support an adequate transition to adulthood. A multimodal day treatment program called "New Opportunities" (in Dutch: "De Nieuwe Kans"; DNK) was specifically developed to target multi-problem young adults in The Netherlands. The aim of this study protocol is to describe the design of a randomized controlled trial (RCT) in clinical practice to examine the effectiveness of DNK in comparison with care as usual (CAU). METHODS/DESIGN: Multi-problem young adults in Rotterdam, The Netherlands, will be assigned randomly to DNK (expected N = 150) and CAU (expected N = 150). Primary outcome measures are recidivism and self-sufficiency. Secondary outcome measures include quality of life, attending school/work, psychological functioning, cognitive distortions and substance use. Participant and program characteristics will be examined as potential moderators of effectiveness. Additionally, cost-effectiveness will be measured. During 14 months, data from multiple resources will be collected at four time points. DISCUSSION: This study is one of the first RCTs on the effectiveness of interventions developed for multi-problem young adults. The results will contribute to the currently scant knowledge about what works for various multi-problem young adults in their transition to adulthood. In addition, the study protocol will provide insight into implementing an RCT in a dynamic setting of clinical practice. TRIAL REGISTRATION: Dutch Trial Register, identifier: NTR5163 . Registered on 17 April 2015; retrospectively registered during the recruitment phase.

Temperament Traits and Psychopathology in Young Clinically Referred Children Compared to a General Population Sample.

Evidence from general population studies shows the contribution of various temperament traits to the development of child psychopathology. Little is known about which traits are associated with internalizing and externalizing problems in young clinically referred children. The current study assessed temperament and internalizing and externalizing problems in 216 referred children (M = 4.35 years, SD 0.89, 81% boys). A comparison was made with an age and gender matched general population sample. Referred children showed less effortful control than general population children. Less effortful control and more negative affectivity were associated with more internalizing and externalizing problems across groups. Surgency, and specifically temperamental impulsivity, was more strongly associated with externalizing problems in referred children compared to general population. Less soothability, less inhibitory control and more frustration predicted (sub)clinical levels of comborbid internalizing and externalizing problems in referred children. The results can be used in diagnostic and treatment procedures in early childhood.

Research Review: The effectiveness of multidimensional family therapy in treating adolescents with multiple behavior problems - a meta-analysis.

BACKGROUND: Multidimensional family therapy (MDFT) is a well-established treatment for adolescents showing both substance abuse and/or antisocial behavior. METHOD: The effectiveness of MDFT in reducing adolescents' substance abuse, delinquency, externalizing and internalizing psychopathology, and family malfunctioning was examined by means of a (three-level) meta-analysis, summarizing 61 effect sizes from 19 manuscripts (N = 1,488 participants). RESULTS: Compared with other therapies, the overall effect size of MDFT was significant, albeit small in magnitude (d = 0.24, p < .001), and similar across intervention outcome categories. Moderator analysis revealed that adolescents with high severity problems, including severe substance abuse and disruptive behavior disorder, benefited more from MDFT than adolescents with less severe conditions. CONCLUSIONS: It can be concluded that MDFT is effective for adolescents with substance abuse, delinquency, and comorbid behavior problems. Subsequently, it is important to match specific characteristics of the adolescents, such as extent of impairment, with MDFT.

Excessive infant crying doubles the risk of mood and behavioral problems at age 5: evidence for mediation by maternal characteristics.

The onset of behavioral problems starts in early life. This study examined whether excessive infant crying (maternal ratings) is a determinant of emotional and behavioral problems at age 5-6 years. In the Amsterdam Born Children and their Development (ABCD) study, a large prospective, observational, population-based multiethnic birth cohort, excessive infant crying (crying for three or more hours per 24 h day over the past week) during the 13th week after birth (range 11-25 weeks, SD 2 weeks), maternal burden of infant care and maternal aggressive behavior (either angry speaking, or physical aggression) was assessed using a questionnaire. Children's behavioral and emotional problems at the age of 5-6 were assessed by Goodman's Strengths and Difficulties Questionnaire (SDQ), by the subscale of generalized anxiety of the preschool anxiety scale (PAS), and by the Short Mood and Feelings Questionnaire (SMFQ). Inclusion criterion was singleton birth. Exclusion criteria were preterm born babies or congenital disorders. Among 3389 children, excessive infant crying (n = 102) was associated with a twofold increased risk of the overall problem behavior, conduct problems, hyperactivity, and mood problems at the age of 5-6 [ORs between 1.75 (95 % CI 1.09-2.81) and 2.12 (95 % CI 1.30-3.46)]. This association was mediated by maternal burden of infant care (change in odds' ratio 1-17 %) and maternal aggressive behavior (change in odds' ratio 4-10 %). There was no effect modification by the child's gender or maternal parity. Excessive infant crying was not associated with general anxiety problems. Excessive infant crying doubles the risk of behavioral, hyperactivity, and mood problems at the age of 5-6, as reported by their mother. Maternal burden of infant care partially mediates the association between excessive crying and behavioral and mood problems. Special care for mothers with a high burden of care for their excessive crying infant, notwithstanding their own good health, can be a feasible strategy for possible prevention of mood and behavioral problems in their children later in life.

Child Protection Service interference in childhood and the relation with mental health problems and delinquency in young adulthood: a latent class analysis study.

BACKGROUND: Most multi-problem young adults (18-27 years old) have been exposed to childhood maltreatment and/or have been involved in juvenile delinquency and, therefore, could have had Child Protection Service (CPS) interference during childhood. The extent to which their childhood problems persist and evolve into young adulthood may differ substantially among cases. This might indicate heterogeneous profiles of CPS risk factors. These profiles may identify combinations of closely interrelated childhood problems which may warrant specific approaches for problem recognition and intervention in clinical practice. The aim of this study was to retrospectively identify distinct statistical classes based on CPS data of multi-problem young adults in The Netherlands and to explore whether these classes were related to current psychological dysfunctioning and delinquent behaviour. METHODS: Age at first CPS interference, numbers and types of investigations, age at first offence, mention of child maltreatment, and family supervision order measures (Dutch: ondertoezichtstelling; OTS) were extracted from the CPS records of 390 multi-problem young adult males aged 18-27 (mean age 21.7). A latent class analysis (LCA) was conducted and one-way analyses of variance and post-hoc t-tests examined whether LCA class membership was related to current self-reported psychological dysfunctioning and delinquent behaviour. RESULTS: Four latent classes were identified: (1) late CPS/penal investigation group (44.9%), (2) early CPS/multiple investigation group (30.8%), (3) late CPS interference without investigation group (14.6%), and (4) early CPS/family investigation group (9.7%). The early CPS/family investigation group reported the highest mean anxiousness/depression and substance use scores in young adulthood. No differences were found between class membership and current delinquent behaviour. CONCLUSIONS: This study extends the concept that distinct pathways are present in multi-problem young adults who underwent CPS interference in their youth. Insight into the distinct combinations of CPS risk factors in the identified subgroups may guide interventions to tailor their treatment to the specific needs of these children. Specifically, treatment of internalizing problems in children with an early onset of severe family problems and for which CPS interference is carried out should receive priority from both policy makers and clinical practice.

The unique relation of childhood emotional maltreatment with mental health problems among detained male and female adolescents.

Mounting evidence indicates that emotional maltreatment is at least as harmful as physical and sexual abuse. Notwithstanding their high occurrence among detained adolescents, the link between emotional maltreatment and mental health problems in these youths is not well researched. This study, therefore, was designed to examine the unique link between emotional maltreatment and mental health problems, with particular attention to gender differences. Well validated self-report measures of maltreatment experiences (Childhood Trauma Questionnaire) and mental health problems (Youth Self Report) were completed by 341 detained adolescents (156 boys, 185 girls) aged 12 to 18 years. As expected, girls reported higher levels of maltreatment experiences and internalizing and externalizing mental health problems than boys. Blockwise multiple linear regression analyses indicated that in both genders emotional abuse was uniquely and positively associated with internalizing and externalizing mental health problems, over and above the influence of other types of maltreatment. Furthermore, sexual abuse was uniquely related with internalizing problems in girls only, whereas only in boys this type of abuse was uniquely related with externalizing problems. Detained adolescents who have been the victim of emotional abuse in combination with another type of maltreatment may be the worst subgroup in terms of mental health problems. Therefore, emotional maltreatment experiences in adolescents who offend should receive more research and clinical attention.

Do post-trauma symptoms mediate the relation between neurobiological stress parameters and conduct problems in girls?

OBJECTIVE: Attenuated activity of stress-regulating systems has consistently been reported in boys with conduct problems. Results in studies of girls are inconsistent, which may result from the high prevalence of comorbid post-trauma symptoms. Therefore, the aim of the present study is to investigate post-trauma symptoms as a potential mediator in the relation between stress-regulation systems functioning and conduct problems in female adolescents. METHODS: The sample consisted of 78 female adolescents (mean age 15.4; SD 1.1) admitted to a closed treatment institution. The diagnosis of disruptive behaviour disorder (DBD) was assessed by a structured interview-the diagnostic interview schedule for children version IV (DISC-IV). To assess post-trauma symptoms and externalizing behaviour problems, self-report questionnaires, youth self report (YSR) and the trauma symptom checklist for Children (TSCC) were used. The cortisol awakenings response (CAR) measured hypothalamic-pituitary-adrenal (HPA) axis activity, whereas autonomous nervous system (ANS) activity was assessed by heart rate (HR), pre-ejection period (PEP) and respiratory sinus arrhythmia (RSA). Independent t-tests were used to compare girls with and without DBD, while path analyses tested for the mediating role of post- trauma symptoms in the relation between stress regulating systems and externalizing behaviour. RESULTS: Females with DBD (n = 37) reported significantly higher rates of post-trauma symptoms and externalizing behaviour problems than girls without DBD (n = 39). Path analysis found no relation between CAR and externalizing behaviour problems. With regard to ANS activity, positive direct effects on externalizing behaviour problems were present for HR (standardized ß = 0.306, p = 0.020) and PEP (standardized ß = -0.323, p = 0.031), though not for RSA. Furthermore, no relation-whether direct or indirect-could be determined from post-trauma symptoms. CONCLUSIONS: Present findings demonstrate that the neurobiological characteristics of female externalizing behaviour differ from males, since girls showed heightened instead of attenuated ANS activity. While the prevalence of post-trauma symptoms was high in girls with DBD, it did not mediate the relation between stress parameters and externalizing behaviour. Clinical implications and future directions are discussed.