Background: Irritable mood has recently become a matter of intense scientific interest. Here, we present data from two samples, one from the United States and the other from the United Kingdom, demonstrating the clinical and research utility of the parent- and self-report forms of the Affective Reactivity Index (ARI), a concise dimensional measure…

Background: For adult physical and mental health, the population mean predicts the proportion of individuals with "high" scores. This has not previously been investigated for child mental health. It is also unclear how far symptom scores on brief questionnaires provide an unbiased method of comparing children with different individual,…

Two large surveys of children and adolescents in the general British population is used to evaluate the dimensionality of the total difficulties score of the Strengths and Difficulties Questionnaire (SDQ). The findings support the use of SDQ as a measure of child mental health.

Background: Assessments of child psychopathology commonly rely on multiple informants, e.g., parents, teachers and children. Informants often disagree about the presence or absence of symptoms, reflecting reporter bias, situation-specific behaviour, or random variation in measurement. However, few studies have systematically tested how far…

Objective: To identify risk factors for poor child mental health in the southeastern Brazilian municipality of Taubate. Method: In 2001 we carried out a representative school-based survey of Brazilian schoolchildren ages 7 to 14 years (response rate, 83%). We collected extensive data on child mental health and on potential risk and protective…

Background: The development of epidemiological instruments has enabled the assessment of mental disorders in youth in countries that plan policy according to evidence-based principles. The Israel Survey of Mental Health among Adolescents (ISMEHA) was conducted in 2004-2005 in a representative sample of 957 adolescents aged 14-17 and their mothers.…

Objective: Callous-unemotional (CU) traits in children and adolescents are increasingly recognized as a distinctive dimension of prognostic importance in clinical samples. Nevertheless, comparatively little is known about the longitudinal effects of these personality traits on the mental health of young people from the general population. Using a…

Background: The use of similar standardised measures of psychopathology for population surveys permits cross-cultural comparisons. However, interpretation of findings can be challenging because rating thresholds may differ across cultures. By combining questionnaire and interview data, we explore whether lower questionnaire scores in Norway as…

Background: Many studies have described associations between adult psychiatric disorder among adults and their biographic, socio-demographic and social capital characteristics. Fewer studies have focused on children, and most of these have looked at structural indicators of the neighbourhood. Our objective was to examine one aspect of social…

Background: Callous and unemotional (CU) traits might usefully subtype DSM-IV conduct disorder (CD). We investigate this hypothesis in a large, nationally representative sample of 5-16-year-olds. We also examine the characteristics of children with high CU traits but without CD. Methods: Data come from the 2004 British Child and Adolescent Mental…

Objective: The Bergen Child Study is a longitudinal study of child mental health from the city of Bergen, Norway. We present methods and results from the first wave of the study, focusing on prevalence of disorders, associations with risk factors, and the use of services. Method: The target population included all 9,430 children attending grades 2…

Background: Oppositional defiant disorder (ODD) in youth is a strong predictor of mental illness yet the wide range of associations with psychiatric disorders remains largely unexplained. The aim of this study was to investigate whether the identification of irritable, headstrong and hurtful dimensions within youth oppositionality would clarify…

Background: In most countries, the majority of children with attention deficit/hyperactivity disorder (ADHD) are undiagnosed. In the United Kingdom, a major barrier to accessing specialist services is the limited recognition of disorders by general practitioners. However, it is unclear whether there are also barriers at other stages of the…

Objective: To evaluate the Strengths and Difficulties Questionnaire in a U.S. national population sample of children and adolescents, develop normative scoring bands, and test the association of high-scoring groups with service contacts or use for mental health reasons. Method: An Americanized version of the Strengths and Difficulties…

We combined data from the Office for Standards in Education with those from a large national survey of child and adolescent mental health and developed a simple score that schools or LEAs could use to predict the level of emotional and behavioural difficulties that they are likely to encounter. The final Ford score is based on the rates of free…