Robert Vermeiren

Psychopathology and delinquency in adolescents: a descriptive and developmental perspective.

The current article presents a review on psychiatric pathology in delinquent adolescents. The putative developmental significance of this co-occurrence is discussed within Moffitts [Psychol. Rev. 100 (1993) 674] developmental framework on antisocial behavior. Articles on psychopathology in delinquent adolescents were retrieved through search engines (MEDLINE, Psychlit) and by exploration of references in those articles. Substantial evidence is at hand that delinquent adolescents have higher rates of externalizing and internalizing disorders when compared to adolescents in the general population. Although substantial limitations hamper interpretation of the findings, the marked similarities across a diversity of samples from different countries suggest that the findings are fairly generalizable. Evidence was found for differences in prevalence and developmental significance of psychiatric pathology between adolescent limited (AL) offenders and life-course persistent (LCP) offenders. Although psychopathology was more severe in LCP offenders, AL offenders still had significant and potential harmful levels of psychopathology. These findings emphasize the necessity of developing mental health services to delinquent adolescents and the necessity of adequate diagnostic and therapeutic interventions in these adolescents.

Oxytocin Modulates Amygdala, Insula, and Inferior Frontal Gyrus Responses to Infant Crying: A Randomized Controlled Trial

BACKGROUND Oxytocin facilitates parental caregiving and mother-infant bonding and might be involved in responses to infant crying. Infant crying provides information about the physical status and mood of the infant and elicits parental proximity and caregiving. Oxytocin might modulate the activation of brain structures involved in the perception of cry sounds-specifically the insula, the amygdala, and the thalamocingulate circuit-and thereby affect responsiveness to infant crying. METHOD In a randomized controlled trial we investigated the influence of intranasally administered oxytocin on neural responses to infant crying with functional magnetic resonance imaging. Blood oxygenation level-dependent responses to infant crying were measured in 21 women who were administered oxytocin and 21 women who were administered a placebo. RESULTS Induced oxytocin levels reduced, experimentally, activation in the amygdala and increased activation in the insula and inferior frontal gyrus pars triangularis. CONCLUSIONS Our findings suggest that oxytocin promotes responsiveness to infant crying by reducing activation in the neural circuitry for anxiety and aversion and increasing activation in regions involved in empathy.

Cortisol moderates the relationship between testosterone and aggression in delinquent male adolescents

BACKGROUND In animals, strong evidence exists for an association between testosterone and aggression. In humans, and particularly in children and adolescents, findings have been less consistent. Previous research has suggested that this may partly be due to moderating effects of other factors, e.g., hormones. This study aims to investigate the moderating effect of cortisol on the relationship between testosterone and subtypes of aggression in delinquent male adolescents. METHODS Participants were 103 boys (mean age 13.7) referred to a delinquency diversion program. Testosterone and cortisol levels were determined from saliva samples collected during resting conditions and related to self-report scores on overt and covert aggression. RESULTS Linear regression analyses revealed a significant interaction between cortisol and testosterone in relation to overt aggression, with a significant positive relationship between testosterone and overt aggression in subjects with low cortisol levels but not in subjects with high cortisol levels. Using the same model for covert aggression, no significant effects of testosterone, cortisol, or testosterone x cortisol interaction were found. CONCLUSIONS These results indicate a moderating effect of cortisol on the relationship between testosterone and overt aggression in delinquent male adolescents. Implications and directions for future research are discussed.

Violence Exposure, Posttraumatic Stress, and Personality in Juvenile Delinquents

OBJECTIVE To assess posttraumatic stress and its relationship to comorbid psychopathology, violence exposure, and personality traits in Russian male juvenile delinquents. METHOD Posttraumatic stress and comorbid psychopathology were assessed by a semistructured psychiatric interview (Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present and Lifetime Version) in 370 delinquent youths during winter-spring of 1999. In addition, violence exposure, personality, and psychopathology were assessed by self-reports. RESULTS Most delinquents reported some degree of posttraumatic stress: 156 subjects (42%) fulfilled partial criteria and 87 (25%) fulfilled full DSM-IV criteria for posttraumatic stress disorder (PTSD). Violence-related experiences (witnessing and victimization) were the most common types of trauma. Higher levels of posttraumatic stress were accompanied by higher rates of comorbid psychopathology, with the most striking differences occurring between the groups with full versus partial PTSD criteria. Violence exposure was related to temperamental behavior activation (novelty seeking), whereas PTSD symptom scores were predominantly related to behavior inhibition and poor coping (high harm avoidance and low self-directedness). CONCLUSIONS Similar to findings from American samples, Russian juvenile delinquents represent a severely traumatized population, mainly due to high levels of violence exposure. Those with full PTSD are the most severely traumatized and have highest rates of psychopathology, as compared to those with no or partial PTSD, and they require the most clinical attention and rehabilitation. Both exposure to violence and levels of posttraumatic stress are related to personality traits, which influence degree of exposure and individual perception of stress. The latter should be considered in individualized approaches to rehabilitation.

Psychiatric Disorders in Detained Male Adolescents: A Systematic Literature Review

Objective: To provide a best estimate of the prevalence of psychiatric disorders among detained male adolescents, with particular emphasis on impairment, multi-informant assessment, and race or ethnicity. Method: Computer-assisted searches were executed to identify relevant studies. Results: Fifteen studies using adolescents as informants met inclusion criteria (n = 3401), of which only 2 reported within a subsample on parent-derived diagnoses. The mean prevalence of any disorder was 69.9% (95% CI 69.5% to 70.3%); with conduct disorder occurring most frequently (46.4%, 95% CI 45.6% to 47.3%), followed by substance use disorder (45.1%, 95% CI 44.6% to 45.5%), oppositional defiant disorder (19.8%, 95% CI 19.2% to 20.3%), and attention-deficit hyperactivity disorder (13.5%, 95% CI 13.2% to 13.9%). Although lower, rates for internalizing disorders were still substantial, with any anxiety disorder found in 15.9% (95% CI 15.6% to 16.1%), major depression in 12.0% (95% CI 11.7% to 12.2%), and posttraumatic stress disorder in 9.6% (95% CI 9.2% to 10.0%). Three studies reported on psychotic disorders, finding low rates (1.35%, 95% CI 1.32% to 1.39%). Estimates of prevalence were only marginally different when impairment was not required, while consistency between adolescents and parents was poor. Findings on the relations between race or ethnicity were too scarce and inconsistent to interpret. Conclusion: Detained male adolescents bear substantial mental health needs, emphasizing the need to organize effective mental health services for this troubled group. However, our knowledge on mental disorders in detained youth should be enhanced, in particular regarding the reliability of adolescents, compared with parent report, and whether clinically relevant differences exist by race or ethnicity.

Juvenile Sex Offenders Compared to Non-Sex Offenders: A Review of the Literature 1995-2005

An unresolved but clinically important issue in the literature on juvenile delinquency is to what extent juvenile sex offenders resemble non-sex offenders with respect to individual, familial, and environmental characteristics. The current article reviewed published studies (1995-2005) comparing sex offenders with non-sex offenders. The 17 articles meeting the inclusion criteria suggest that differences exist between sex offenders and non-sex offenders on personality characteristics, behavioral problems, history of sexual abuse, nonsexual offending, and peer functioning. Inconsistent results were found for demographic factors, family functioning and background, antisocial attitudes, and intellectual and neurological functioning. Although it is likely that sex offenders can be differentiated from nonsex offenders on a number of characteristics, caution is warranted because of methodological differences between studies and small samples size. Also, studies show that sex offenders are a heterogeneous group. Further research should take into account this heterogeneity by including sex offenders from clearly circumscribed groups and investigating characteristics specifically related to sexual behavior.

Hypothalamus pituitary adrenal axis and autonomic activity during stress in delinquent male adolescents and controls

OBJECTIVE Patterns of low autonomic arousal have consistently been related to delinquency and disruptive behavior disorders (DBD) in children and adolescents. Findings on another stress regulating mechanism, the hypothalamic pituitary adrenal (HPA) axis, have been inconsistent, which may partly be due to not considering specific stress reactivity measures. Therefore, the aim of the present study was to investigate the relationship between disruptive behavior in male adolescents and their HPA and autonomic reactivity to a standard public speaking task (PST). METHOD Responsivity to the PST of cortisol, heart rate (HR), skin conductance level (SCL) and self-reported negative feelings was measured, and compared between 12and14-year-old boys who attended a delinquency diversion program (DP), with and without DBD (DP+, n=22 and DP-, n=49, resectively), and matched normal controls (NC, n=30). DBD diagnoses were based on a structured psychiatric interview. RESULTS The DP+ group, but not the DP- group, showed a significantly decreased cortisol and HR response during the PST as compared with the NC group. No significant effects were found for SCL. All subjects connoted the task negatively. CONCLUSIONS The results indicate that low cortisol and HR responsivity to stress may be a neurobiological marker for delinquent boys with DBD, but not for those without DBD. Directions for future research and clinical implications are discussed.

A meta-analytic review on treatment dropout in child and adolescent outpatient mental health care

A large proportion (28% up to 75%) of the treatments in youth mental health care results in premature termination (dropout). It is important to gain knowledge of the determinants of dropout because it can have very severe consequences. The aim of our meta-analytic review was to provide an overview of findings from empirical studies on this subject. We structured the often contradicting results from two perspectives. First, we compared studies with efficacy and effectiveness designs. Second, we compared studies which used a dropout definition based on the opinion of therapists, with those that took the number of predetermined completed sessions as a criterion. Third, we studied three groups of predictors, i.e., pre-treatment child variables, pre-treatment family or parent variables, and treatment and therapist variables or treatment participation barriers. The meta-analytic review showed that dropout percentages were strongly influenced by study design: Percentages were lower in efficacy than in effectiveness studies. Within effectiveness studies, the dropout percentages were lower when the therapists opinion was used rather than when the number of sessions was used as a criterion. In efficacy studies on the contrary, the dropout percentages were similar for studies using the first or the second criterion. With respect to dropout predictors, results were less clear. Some of the dropout predictors were influenced by study design or dropout definition, but for most predictors this influence could not be analyzed because they were not studied in all groups of studies or because the effect sizes were small or non-significant. Treatment and therapist variables or experienced treatment participation barriers were overall stronger dropout predictors than the pre-treatment child variables and pre-treatment family or parent variables, although some strong predictive pre-treatment variables emerged as well.

The Diurnal Cortisol Cycle in Delinquent Male Adolescents and Normal Controls

Patterns of low hypothalamus–pituitary–adrenal (HPA) activity have been observed in antisocial groups. As conflicting results have been reported in children and adolescents, the aim of this study was to further investigate HPA activity in antisocial behavior by studying the relationship between the diurnal cortisol cycle, as well as the cortisol awakening response (CAR), and antisocial behavior in male adolescents. The diurnal cortisol cycle and the CAR during the first hour after awakening were compared between 12- to 14-year-old boys who attended a delinquency diversion program (DP), with and without a disruptive behavior disorder (DBD) (respectively DP+; n=24 and DP−; n=65), and matched normal controls (NC; n=32). The DP+ group, but not the DP− group, showed a significantly slower decrease of cortisol during the diurnal cycle than the NC group. Furthermore, the DP+ group had significantly lower cortisol levels in the first hour after awakening as compared with the NC group. The results indicate altered HPA activity in delinquent boys with a DBD. Etiological mechanisms, directions for future research, and clinical implications are discussed.

Suicidal ideations and attempts in juvenile delinquents

BACKGROUND Suicidality among adolescents is a common focus of clinical attention. In spite of links to disruptive behaviors and other types of psychopathology, it is not clear whether other factors commonly associated with suicide, such as personality and parenting, predict suicidality over and above psychopathology. The purpose of the present study was to assess suicidal ideations and attempts and their relationship to psychopathology, violence exposure, personality traits and parental rearing in Russian male juvenile delinquents with conduct disorder (CD). METHOD Suicidality and psychopathology were assessed using a semi-structured psychiatric interview in 271 incarcerated male juvenile delinquents diagnosed with CD. Violence exposure, personality characteristics and perceived parental rearing were assessed via self-reports. RESULTS Thirty-four percent of those diagnosed with CD (92 subjects) reported a lifetime history of either suicidal thoughts or attempts. Suicidal ideators and attempters did not differ significantly on any variable of interest, but both reported significantly higher rates of psychopathology and violence exposure than the non-suicidal group, as well as higher levels of harm avoidance, lower self-directedness, and higher rates of perceived negative parental rearing. Finally, even when controlling for the relationship with psychopathology, personality and perceived parental rearing factors showed significant associations with suicidality. CONCLUSIONS Juvenile delinquents with CD have high rates of suicidal ideations and attempts, related to a wide spectrum of psychopathology and specific personality traits. These findings suggest that a combination of intrinsic and extrinsic factors create vulnerability to stressors, which under the influence of situational factors (e.g., repeated traumatization) may lead to suicidal thoughts and acts. Factors potentially contributing to vulnerability for suicidality should be identified when planning prevention and rehabilitation efforts for troubled youth.