Attention-deficit/hyperactivity disorder symptoms and child maltreatment: a population-based study

Child maltreatment as a transdiagnostic risk factor for the externalizing dimension: a Mendelian randomization study

Observational studies suggest that child maltreatment increases the risk of externalizing spectrum disorders such as attention deficit hyperactivity disorder (ADHD), conduct disorder (CD), antisocial personality disorder (ASPD), and substance use disorder (SUD). Yet, only few of such associations have been investigated by approaches that provide strong evidence for causation, such as Mendelian Randomization (MR). Establishing causal inference is essential given the growing recognition of gene-environment correlations, which can confound observational research in the context of childhood maltreatment. Evaluating causality between child maltreatment and the externalizing phenotypes, we used genome-wide association study (GWAS) summary data for child maltreatment (143,473 participants), ADHD (20,183 cases; 35,191 controls), CD (451 cases; 256,859 controls), ASPD (381 cases; 252,877 controls), alcohol use disorder (AUD; 13,422 cases; 244,533 controls), opioid use disorder (OUD; 775 cases; 255,921 controls), and cannabinoid use disorder (CUD; 14,080 cases; 343,726 controls). We also generated a latent variable 'common externalizing factor' (EXT) using genomic structural equation modeling. Genetically predicted childhood maltreatment was consistently associated with ADHD (odds ratio [OR], 10.09; 95%-CI, 4.76-21.40; P = 1.63 × 10-09), AUD (OR, 3.72; 95%-CI, 1.85-7.52; P = 2.42 × 10-04), and the EXT (OR, 2.64; 95%-CI, 1.52-4.60; P = 5.80 × 10-04) across the different analyses and pleiotropy-robust methods. A subsequent GWAS on childhood maltreatment and the externalizing dimension from Externalizing Consortium (EXT-CON) confirmed these results. Two of the top five genes with the strongest associations in EXT GWAS, CADM2 and SEMA6D, are also ranked among the top 10 in the EXT-CON. The present results confirm the existence of a common externalizing factor and an increasing vulnerability caused by child maltreatment, with crucial implications for prevention. However, the partly diverging results also indicate that specific influences impact individual phenotypes separately.

Reciprocal relations between dimensions of attention-deficit/hyperactivity and anxiety disorders from preschool age to adolescence: sex differences in a birth cohort sample

BACKGROUND

Symptoms of anxiety and attention-deficit/hyperactivity disorder (ADHD) are prospectively related from childhood to adolescence. However, whether the two dimensions of ADHD-inattention and hyperactivity-impulsivity-are differentially related to anxiety and whether there are developmental and sex/gender differences in these relations are unknown.

METHODS

Two birth cohorts of Norwegian children were assessed biennially from ages 4 to 16 (N = 1,077; 49% girls) with diagnostic parent interviews used to assess symptoms of anxiety and ADHD. Data were analyzed using a random intercept cross-lagged panel model, adjusting for all unobserved time-invariant confounding effects.

RESULTS

In girls, increased inattention, but not hyperactivity-impulsivity, predicted increased anxiety 2 years later across all time-points and increased anxiety at ages 12 and 14 predicted increased inattention but not hyperactivity-impulsivity. In boys, increased hyperactivity-impulsivity at ages 6 and 8, but not increased inattention, predicted increased anxiety 2 years later, whereas increased anxiety did not predict increased inattention or hyperactivity-impulsivity.

CONCLUSIONS

The two ADHD dimensions were differentially related to anxiety, and the relations were sex-specific. In girls, inattention may be involved in the development of anxiety throughout childhood and adolescence and anxiety may contribute to girls developing more inattention beginning in early adolescence. In boys, hyperactivity-impulsivity may be involved in the development of anxiety during the early school years. Effective treatment of inattention symptoms in girls may reduce anxiety risk at all time-points, while addressing anxiety may decrease inattention during adolescence. Similarly, treating hyperactivity-impulsivity may reduce anxiety risk in boys during late childhood (at ages 8-10).

Long-term cortisol secretion in attention deficit hyperactivity disorder: roles of sex, comorbidity, and symptom presentation

Low activity of the hypothalamic-pituitary-adrenal axis (HPAA) has been found in children with attention deficit hyperactivity disorder (ADHD). The condition may be related to the reduced attention regulation capacity and/or to comorbid oppositional defiant or conduct disorder (ODD/CD). Sex differences are probable but not sufficiently studied. We analyzed the HPAA activity and sympathetic nervous system reactivity (SR) in children with ADHD while accounting for ADHD symptom presentation, comorbidity, and sex differences. The sample comprised 205 children, 98 (61 boys, 37 girls) with ADHD and 107 (48 boys, 59 girls) healthy controls. DSM-5 phenotypic symptom presentation and comorbid ODD/CD were assessed using clinical interviews. Hair cortisol concentration (HCC) was used to assess the long-term, cumulative activity of the HPAA. SR was assessed via skin conductance response (SCR). For control purposes, comorbid internalizing symptoms and indicators of adverse childhood experiences (ACE) were assessed. Children were medication naive. Boys presenting with predominantly inattentive symptoms (ADHD-I) showed lower HCC than healthy boys. Girls presenting with combined symptoms (ADHD-C) showed higher HCC than did healthy girls (p's < 0.05, sex-by-group interaction, F (2,194) = 4.09, p = 0.018). Boys with ADHD plus ODD/CD showed a blunted SR (p < 0.001, sex-by-group interaction, F (2,172) = 3.08, p = 0.048). Adjustment for ACE indicators led to non-significant differences in HCC but did not affect differences in SR. HCC constitutes an easily assessable, reliable, and valid marker of phenotypic ADHD-related features (i.e. symptom presentation and comorbidity). It indicates more homogenous subgroups of ADHD and might point to specifically involved pathophysiological processes.

Understanding the prospective associations between neuro-developmental problems, bullying victimization, and mental health: Lessons from a longitudinal study of institutional deprivation

Studies suggest that children who have experienced neglect are at risk for bullying which in turn increases the risk for poor mental health. Here we extend this research by examining whether this risk extends to the neglect associated with severe institutional deprivation and then testing the extent to which these effects are mediated by prior deprivation-related neuro-developmental problems such as symptoms of inattention, hyperactivity and autism. Data were collected at ages 6, 11, 15, and young adulthood (22-25 years) from 165 adoptees who experienced up to 43 months of deprivation in Romanian Orphanages in 1980s and 52 non-deprived UK adoptees (N = 217; 50.23% females). Deprivation was associated with elevated levels of bullying and neuro-developmental symptoms at ages 6 through 15 and young adult depression and anxiety. Paths from deprivation to poor adult mental health were mediated via cross-lagged effects from earlier neuro-developmental problems to later bullying. Findings evidence how deep-seated neuro-developmental impacts of institutional deprivation can cascade across development to impact social functioning and mental health. These results elucidate cascade timing and the association between early deprivation and later bullying victimization across childhood and adolescence.

Profile of hospitalised maltreated children aged 0 to 3 years and their families

INTRODUCTION

Maltreatment adversely affects children's health and development. Knowledge of child maltreatment in early childhood is limited. We studied the demographic factors and health issues in children aged 0-3 years who were hospitalised for maltreatment.

METHODS

In this retrospective cohort study, health and demographic information was extracted from the electronic medical records of children hospitalised in KK Women's and Children's Hospital between January 2018 and June 2019. High-risk groups were children with developmental delay (DD), missed vaccination (MV), low outpatient attendance, high dependency unit (HDU) or intensive care unit (ICU) admission and Child Protection Service (CPS) referral. Chi-square or Fisher's exact test was used for categorical variables. Mann-Whitney U test was used for skewed quantitative variables.

RESULTS

Among the 101 children included in the study, the most common type of abuse and alleged perpetrator were physical abuse and parents, respectively. In addition, 35.6% of the children had pre-existing health conditions before hospitalisation, 58.4% had new health conditions diagnosed during hospitalisation requiring follow-up and 26.7% had maltreatment-related injuries. One-fifth of the children had DDs and another one-fifth had MVs. About 20% of them had defaulted all outpatient appointments. High-risk children mostly lived in rented housing. Their mothers mostly had primary education or lower. Most children admitted to ICU or HDU were <6 months old (8/12 [66.7%] vs. 6-24 months 3/12 [25%] vs. 24-47 months 1/12 [8.3%], P = 0.001). A higher number of children with DD were referred to CPS (63.2%, P = 0.049) than to other agencies.

CONCLUSION

Maltreated children have significant health needs that are not fully met through routine surveillance practices. They are at risk of defaulting their hospital appointment. It is imperative that families at risk of child maltreatment are identified early and their needs holistically evaluated, with care coordinated within the hospital-community support system.

Adverse Childhood Experiences and ADHD Symptoms Among French College Students

To examine the relationship between adverse childhood experiences (ACEs) and Attention-deficit Hyperactivity Disorder (ADHD) among college students. We investigated the association between ACEs and ADHD symptoms among French college students enrolled in the i-Share cohort using multivariate logistic regression models. The sample comprised of 1062 participants with a mean age of 20.3 (SD = 2.3) of which 30.6% had no ACEs exposure, 29.6% had 1 ACE, 19.2% had 2 ACEs, and 20.6% had ≥ 3 ACEs. After controlling for potential confounders, every increase in ACE exposure heightened the risk of ADHD symptoms with the respective adjusted Odds Ratios and 95% confidence intervals: 1 ACE: 2.1 (0.7-6.3) / 2 ACEs: 4.5 (2.6-12.8)/ ≥ 3 ACEs: 5.2 (1.8-14.8). Estimates for ADHD symptoms were higher with sexual abuse, emotional and physical neglect, and bullying. Findings suggest that ACEs heighten the risk for developing ADHD symptoms among college students and bear important implications for prevention and clinical practice.

Is there evidence of a causal link between childhood maltreatment and attention deficit/hyperactivity disorder? A systematic review of prospective longitudinal studies using the Bradford-Hill criteria

Background

Studies report an elevated risk of maltreatment in children with attention deficit/hyperactivity disorder (ADHD), and elevated levels of ADHD in people who suffered childhood maltreatment (CM). However, the direction(s) of causality between CM and ADHD remain unclear-does ADHD create a context for CM, does CM cause ADHD, or both?

Objective

This study systematically reviews and qualitatively synthesizes the research evidence relating to this question using Bradford-Hill criteria for establishing causality-strength, temporality, dose-response and plausibility.

Methods

We conducted a systematic review, following PRISMA guidelines, of prospective longitudinal studies examining both CM and ADHD. We then used Bradford-Hill criteria to assess the quality of evidence for a causal link between CM and ADHD.

Results

All 11 included studies demonstrated an association between CM and ADHD. Seven included evidence for temporality: five suggesting that CM precedes ADHD in the lifespan; two suggesting ADHD precedes CM. Four studies demonstrated a dose response relationship in which greater CM exposure was associated with elevated risk of ADHD. Studies presented a range of plausible mechanisms, including CM causing ADHD through biological programming, versus ADHD causing CM through parental stress.

Conclusions

The high quality prospective longitudinal studies reviewed confirm the association between ADHD and CM, but present conflicting evidence about the direction of causality and mechanisms underpinning this association. To better understand the complex interplay between CM and ADHD, more studies using new research designs will be required that can partition effects by type of CM and account for bidirectional effects and other complexities.

Disentangling the Associations Between Attention Deficit Hyperactivity Disorder and Child Sexual Abuse: A Systematic Review

BACKGROUND

An association between child sexual abuse (CSA) and attention deficit hyperactivity disorder (ADHD) has been documented. However, the temporal relationship between these problems and the roles of trauma-related symptoms or other forms of maltreatment remain unclear. This review aims to synthesize available research on CSA and ADHD, assess the methodological quality of the available research, and recommend future areas of inquiry.

METHODS

Studies were searched in five databases including Medline and PsycINFO. Following a title and abstract screening, 151 full texts were reviewed and 28 were included. Inclusion criteria were sexual abuse occurred before 18 years old, published quantitative studies documenting at least a bivariate association between CSA and ADHD, and published in the past 5 years for dissertations/theses, in French or English. The methodological quality of studies was systematically assessed.

RESULTS

Most studies identified a significant association between CSA and ADHD; most studies conceptualized CSA as a precursor of ADHD, but only one study had a longitudinal design. The quality of the studies varied greatly with main limitations being the lack of (i) longitudinal designs, (ii) rigorous multimethod/ multiinformant assessments of CSA and ADHD, and (iii) control for two major confounders: trauma-related symptoms and other forms of child maltreatment.

DISCUSSION

Given the lack of longitudinal studies, the directionality of the association remains unclear. The confounding role of other maltreatment forms and trauma-related symptoms also remains mostly unaddressed. Rigorous studies are needed to untangle the association between CSA and ADHD.

High rate of attention deficit hyperactivity disorder among children 6 to 17 years old in Southwest Ethiopia findings from a community-based study

BACKGROUND

Attention-deficit/hyperactivity disorder is among the common neuropsychiatric disorders affecting children and adolescents. The disorder affects the life of children, their parents, and the community when left untreated. Although evidence indicated a high prevalence of attention-deficit/hyperactivity disorder in the developed world, there is limited evidence in developing countries, particularly, Ethiopia. Therefore, this study aimed to determine the prevalence and associated factors of attention deficit hyperactivity disorder among Ethiopian children aged 6 to 17 years.

METHODS

A community-based cross-sectional study was conducted from August to September 2021 among children aged 6 to 17 years in Jimma town. A multistage sampling technique was applied to select 520 study participants. Data were collected by using the Vanderbilt Attention Deficit Hyperactivity Disorder- Parent Rating scale as a modified, semi-structured, and face-to-face interview. The association between independent variables and the outcome variable was investigated using bi-variable and multivariable logistic regression. The final model level of significance was set at a p-value of < 0.05.

RESULT

A total of 504 participants were involved in the study with a response rate of 96.9%. The overall prevalence of attention deficit hyperactivity disorder in this study was (9.9%, n = 50). Maternal complication during pregnancy (Adjusted odds ratio (AOR) = 3.56, 95% CI = 1.44-8.79, mothers illiteracy (AOR = 3.10, 95% CI = 1.24-7.79), attending primary school (AOR = 2.97, 95% CI = 1.32-6.73), history of head trauma (AOR = 3.20, 95% CI = 1.25-8.16), maternal alcohol use during pregnancy (AOR = 3.54, 95% CI = 1.26-10), bottle feeding during first six months (AOR = 2.87, 95% CI = 1.20-6.93) and child's age 6-11 years (AOR = 3.86, 95% CI = 1.77-8.43) were significantly associated with attention deficit hyperactivity disorder.

CONCLUSION

In this study, one in ten children and adolescents in Jimma town had attention deficit hyperactivity disorder. Therefore, the prevalence of attention deficit hyperactivity disorder was high. For this reason, there is a need to pay increased attention to control associated factors of attention deficit hyperactivity disorder and reduce its prevalence.

A macro-level understanding of levels and trends in the abuse and homicide of children, 1997-2020

BACKGROUND

Data suggest that U.S. rates of violence declined beginning in the 1990s. However, crime trend studies have not entirely agreed on reasons for the decline, and few have empirically assessed the decline in violence against children more specifically.

OBJECTIVE

This study investigates several competing hypotheses for explaining declines in reported child physical abuse, sexual abuse, and homicide. Attention is given to the importance of these explanatory factors for explaining both rates (levels) and year-over-year differences (trends) in these child outcomes.

PARTICIPANTS AND SETTING

Population-level state-panel data for the years 1997-2020 are used, totaling 1176 state-years.

METHODS

Linear panel-data models are used to examine the relationship between explanatory factors and levels and trends in rates of reported child abuse and child homicide.

RESULTS

As operationalized in this study, few of the hypotheses proposed for explaining declines in child victimization were associated with levels or trends in reported child abuse. The only explanatory factor significantly associated with lower rates of reported child physical abuse was the rate of alternative response. Year-over-year increases in lagged female incarceration rates were associated with year-over-year declines in rates of reported physical abuse. Several explanatory measures were associated with levels or trends in child homicide, while only methylphenidate distribution was associated with levels of reported child sexual abuse.

CONCLUSIONS

Policymakers should be aware of the importance of alternative response rates on rates of reported child physical abuse and recognize that macro-level declines in reported child victimization may only be possible if macro-level conditions are also addressed.

The role of psychosocial adversity in the aetiology and course of attention deficit hyperactivity disorder

INTRODUCTION

Attention deficit/hyperactivity disorder (ADHD) has genetic and environmental aetiological factors. There are few publications on the environmental factors. The objective of this review is to present the role of psychosocial adversity in the aetiology and course of ADHD.

METHODS

A search was carried out in the following databases: PubMed, ScienceDirect, SciELO, ClinicalKey, EMBASE, Lilacs, OVID, APA and PsycNET. English and Spanish were selected without being limited by type of study or year of publication. Finally, a qualitative synthesis was conducted.

RESULTS

ADHD development could be related to exposure to adverse factors in the family, school or social environment. It has been proposed as an explanatory mechanism that adversity interacts with genetic variants and leads to neurobiological changes. There may also be a gene-environment correlation whereby individual hereditary characteristics increase the risk of exposure to adversity, and indirectly increase the probability of developing ADHD. Research on psychosocial adversity represents a big challenge, not only due to the complexity of its construct, but also to the effect of subjective perception of a given event.

CONCLUSIONS

ADHD aetiology is complex and involves the interaction of both genetic and environmental factors, in which these factors correlate and cause the disorder. The study of the role of psychosocial adversity in ADHD is fundamental, but it remains a task that entails great difficulties.

Complementary and Alternative Medicine Use by ADHD Patients: A Systematic Review

OBJECTIVE

This study aimed to review the prevalence of complementary and alternative medicine (CAM) use and its different used types, characteristics of the studied cohorts, the reasoning for CAM use, and possible predictive factors for its use amongst ADHD patients.

METHOD

The Web of Science Core Collection, PubMed, and Scopus were searched from inception to 10 February 2022. All of the original papers published in English which report data on CAM use by patients with ADHD were included.

RESULTS

Twelve original researches including 4,447 patients were included. The prevalence of CAM use varied from 7.5% to 67.6%. The most-reported CAM modalities were dietary modifications and natural products. Moreover, higher parental education should be considered as a predictive factor for CAM use.

CONCLUSION

CAM use by ADHD patients seems to be prevalent. Healthcare providers should be trained about the most commonly used CAM therapies and their possible adverse events.

Anger and Attention Problems as Mechanisms Linking Maltreatment Subtypes and Witnessed Violence to Social Functioning Among Children in Out-of-Home Care

Research has consistently shown that child maltreatment and witnessed violence lead to disrupted patterns of social functioning, yet the mechanisms underlying these pathways remain unclear. This cross-sectional study evaluated whether anger and/or attention problems mediated the links from abuse, neglect, and witnessed violence to peer problems and aggressive behavior. Participants included a diverse sample of 470 children (ages 8-11; 52.1% boys) living in out-of-home care. Subtype and severity of maltreatment exposure were coded using Child Protection Services' intake reports and court records. Witnessed violence and anger were assessed using child-reports, and caregivers provided ratings of attention problems and social functioning. Indirect effects were tested using a series of structural equation path analysis models. Results indicated that anger fully mediated the links from witnessed violence to both peer problems and aggressive behavior. Further, attention problems fully mediated the links from physical abuse and physical neglect to both peer problems and aggressive behavior. These findings highlight the need for interventions to target anger regulation and attentional control among children in out-of-home care in order to mitigate their risk for social maladjustment.

Understanding the association between adverse childhood experiences and subsequent attention deficit hyperactivity disorder: A systematic review and meta-analysis of observational studies

OBJECTIVES

Attention deficit hyperactivity disorder (ADHD) is a common neurodevelopmental disorder in childhood, which may be related to adverse childhood experiences (ACEs). Our study aims to explore the association between ACEs and subsequent ADHD, and analyze the potential moderators.

METHODS

Literature search was conducted by a combined computer-assisted and manual method. Studies were included if they had reported the association between ACEs and subsequent ADHD. Overall estimates of odds ratios (ORs) were obtained using random-effects meta-analyses, meta-regressions and further stratified analyses were conducted to examine potential moderator variables.

RESULTS

Totals of 70 studies involving nearly 4 million participants from among 6,452 unique articles were included. In the primary analyses, ACEs were found to be associated with subsequent ADHD (OR = 1.68, 95% CI: 1.54-1.83), and the negative effects of different forms of ACEs for ADHD were nonequivalent. Such as lived in the stepfamily, been adopted or fostered, and experienced sexual abuse were more deleterious than others. It was found that individuals who had experienced multiple ACEs or who are female were more vulnerable to ADHD.

CONCLUSIONS

The findings provide critical evidence for understanding the association between ACEs and ADHD. ACEs could increase the susceptibility of ADHD, especially for individuals who ever experienced multiple ACEs and females.

From Structural Disparities to Neuropharmacology: A Review of Adult Attention-Deficit/Hyperactivity Disorder Medication Treatment

Adult attention-deficit/hyperactivity disorder (ADHD) is an early-onset disorder with many functional impairments and psychiatric comorbidities. Although no treatment fully mitigates impairments associated with ADHD, effective management is possible with pharmacologic and nonpharmacologic treatments. The etiology and pathophysiology of ADHD are remarkably complex and the disorder is continuously distributed in the population. While these findings have been well documented in studies with predominantly white samples, ADHD may affect racial and ethnic minorities differentially, given diagnostic and treatment disparities. This review provides an updated overview of the epidemiology, etiology, neurobiology, and neuropharmacology of ADHD, addressing racial and ethnic disparities whereby data are available.

The (Un)real Existence of ADHD-Criteria, Functions, and Forms of the Diagnostic Entity

The contemporary conceptualization of Attention Deficit Hyperactivity Disorder (ADHD) as a complex, multifactorial neurodevelopmental disorder cannot be understood as such without a complex assemblage of political, economic, and cultural processes that deem the conceptualization to be valuable and useful. In this article we use the notion of psychiatrization as a lens through which to see parts of these processes that make up ADHD what it is. In the first part of the article, we critically assess the scientific basis of the ADHD diagnosis via examining its diagnostic criteria as presented in the current fifth edition of Diagnostic and Statistical Manual of Mental Disorders (DSM), the so called "Bible" of modern psychiatry. The second part of the article asks what is done with the ADHD diagnostic entity and with the idea that it represents a natural neurodevelopmental state within an individual-something an individual has-as represented in the DSM-5. Drawn from our previous research, we analyze how ADHD becomes real in discourse practice as a powerful semiotic mediator through analysis of the various functions and forms in which it takes shape in institutional, social, and individual levels. We conclude that the frequent changes in the diagnostic criteria of ADHD do not reflect any real scientific progress. Among other reasons, they change to match better the maneuvers of individuals when navigating an increasingly psychiatrized society in the search for recognition, support, category membership, immunity, sympathy, and sense of belonging.

Stress-related biomarkers and cognitive functioning in adolescents with ADHD: Effect of childhood maltreatment

Our study aimed to explore whether stress-related hormones (hypothalamic-pituitary-adrenal [HPA] axis hormones and prolactin) are associated with poorer cognitive functioning in adolescents with attention deficit and hyperactivity disorder (ADHD) and to test the potential moderating effect of childhood maltreatment. Seventy-six adolescents with ADHD were studied. The ADHD rating scale (ADHD-RS) and Childhood Trauma Questionnaire (CTQ) were administered. Seven cognitive tasks from the Cambridge Neuropsychological Test Automated Battery (CANTAB) were administered, and two cognitive factors (attention and memory as well as executive functioning) were identified by confirmatory factor analysis. Stress-related hormone levels were assessed at the clinic (plasma prolactin and cortisol levels and salivary cortisol levels) before cognitive testing and at home for two consecutive days (cortisol awakening response [CAR] and diurnal cortisol slope). Multiple linear regression analyses were used to explore the association between hormone levels and ADHD severity or cognitive functioning while adjusting for sex and childhood maltreatment. Regarding hormonal measurements obtained at the clinic, female sex moderated the relationship between salivary cortisol levels and executive functioning, whereas childhood maltreatment moderated the relationship between salivary cortisol levels and inattention symptoms of patients with ADHD. Prolactin levels were not associated with cognitive functioning or the severity of ADHD. Regarding HPA axis measurements performed at home, lower cortisol levels at awakening were associated with poorer executive functioning. Neither CAR nor the cortisol diurnal slope were associated with cognitive functioning or ADHD severity. Our study suggests that HPA axis hormone levels are associated with the severity of cognitive and inattention symptoms of patients with ADHD and that childhood maltreatment and sex exert distinct moderating effects depending on the symptom type.

ADHD symptom profiles, intermittent explosive disorder, adverse childhood experiences, and internalizing/externalizing problems in young offenders

Attention-deficit/hyperactivity disorder (ADHD) and co-existing psychiatric/psychological impairments as well as adverse childhood experiences (ACEs) are common among young offenders. Research on their associations is of major importance for early intervention and crime prevention. Intermittent explosive disorder (IED) warrants specific consideration in this regard. To gain sophisticated insights into the occurrence and associations of ADHD, IED, ACEs, and further psychiatric/psychological impairments in young (male and female) offenders, we used latent profile analysis (LPA) to empirically derive subtypes among 156 young offenders who were at an early stage of crime development based on their self-reported ADHD symptoms, and combined those with the presence of IED. We found four distinct ADHD subtypes that differed rather quantitatively than qualitatively (very low, low, moderate, and severe symptomatology). Additional IED, ACEs, and further internalizing and externalizing problems were found most frequently in the severe ADHD subtype. Furthermore, females were over-represented in the severe ADHD subtype. Finally, ACEs predicted high ADHD symptomatology with co-existing IED, but not without IED. Because ACEs were positively associated with the occurrence of ADHD/IED and ADHD is one important risk factor for on-going criminal behaviors, our findings highlight the need for early identification of ACEs and ADHD/IED in young offenders to identify those adolescents who are at increased risk for long-lasting criminal careers. Furthermore, they contribute to the debate about how to best conceptualize ADHD regarding further emotional and behavioral disturbances.

Lie-telling for personal gain in children with and without externalizing behavior problems

Few studies have examined the lie-telling behavior of children who have externalizing problems using experimental procedures. In the current study, children's lie-telling for personal gain (N = 110 boys aged 6-11 years) was examined using an experimental paradigm in relation to their theory-of-mind abilities and inhibitory control as well as their moral evaluations of truths and lies. Children with externalizing behavior problems (n = 53) were significantly more likely to lie and to be less skilled at lying than a typical comparison group (n = 57). Children who had lower theory-of-mind scores were significantly less likely to tell a lie for personal gain compared with those who had higher theory-of-mind scores. Children with externalizing problems who told personal gain lies were also more likely to rate tattle truths more positively than other children. For a subsample of children (n = 55), parent-reported diaries of the frequency of children's lies over 2 weeks revealed a higher frequency of lies by children with externalizing problems compared with the typical comparison group. Children whose parents reported a high frequency of lies for their children were also more likely to lie in the experimental personal gain lie paradigm. Results suggest that children with externalizing behavior may have a different pattern of lie-telling than has been previously reported for normative lie development.

ADHD in the DSM-5-TR: What has changed and what has not

In this article, we critically review the changes made to the DSM-5 Text Revision published in 2022 regarding the diagnostic entity of Attention Deficit/Hyperactivity Disorder (ADHD). We structure our critique around three points. The first discusses the acknowledgment of ADHD as a neurodevelopmental disorder. The second examines the definition of ADHD provided in the updated edition of the manual. The third scrutinizes the changes in the diagnostic criteria for ADHD and assesses whether these changes make the diagnosis more accurate. We conclude that DSM's latest edition does not escape the logical and scientific pitfalls of its predecessor. DSM-5-TR keeps the faith in the neo-Kraepelinian paradigm by explicitly and implicitly cultivating the essentialist medical scientific metaphor of disorder, creating the illusion that it represents scientific progress that validates ADHD as a neurodevelopmental disorder.

Hyperactive/impulsive symptoms and autistic trait in institutionalized children with maltreatment experience

The present study examined how maltreatment experience was associated with autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD) symptoms in children under institutional care. The key caregivers of children and adolescents aged 6 to 18 years who were under institutional care in Nagano prefecture, Japan were asked to answer the background questionnaire, ADHD-Rating Scale, and the Japanese children's version of the Autism-Spectrum Quotient. A total of 378 valid responses were obtained, of which 222 reported maltreatment experience prior to institutionalization. Both hyperactive/impulsive and inattentive scores were significantly higher in the maltreated group. Maltreatment experience was significantly associated with the presence of hyperactive/impulsive symptoms (p = 0.003) and inattentive symptoms (p = 0.027). Particularly, those who had experienced physical abuse were significantly more likely to have hyperactive/impulsive symptoms (p = 0.012) and autistic trait (p = 0.002). Thorough assessment of neurodevelopmental symptoms should be performed when placing children with maltreatment experience into institutional care.

The World Federation of ADHD International Consensus Statement: 208 Evidence-based conclusions about the disorder

BACKGROUND

Misconceptions about ADHD stigmatize affected people, reduce credibility of providers, and prevent/delay treatment. To challenge misconceptions, we curated findings with strong evidence base.

METHODS

We reviewed studies with more than 2000 participants or meta-analyses from five or more studies or 2000 or more participants. We excluded meta-analyses that did not assess publication bias, except for meta-analyses of prevalence. For network meta-analyses we required comparison adjusted funnel plots. We excluded treatment studies with waiting-list or treatment as usual controls. From this literature, we extracted evidence-based assertions about the disorder.

RESULTS

We generated 208 empirically supported statements about ADHD. The status of the included statements as empirically supported is approved by 80 authors from 27 countries and 6 continents. The contents of the manuscript are endorsed by 366 people who have read this document and agree with its contents.

CONCLUSIONS

Many findings in ADHD are supported by meta-analysis. These allow for firm statements about the nature, course, outcome causes, and treatments for disorders that are useful for reducing misconceptions and stigma.

Adverse childhood experiences and child mental health: an electronic birth cohort study

BACKGROUND

Adverse childhood experiences (ACEs) are negatively associated with a range of child health outcomes. In this study, we explored associations between five individual ACEs and child mental health diagnoses or symptoms. ACEs included living with someone who had an alcohol-related problem, common mental health disorder or serious mental illness, or experienced victimisation or death of a household member.

METHODS

We analysed data from a population-level electronic cohort of children in Wales, UK, (N = 191,035) between the years of 1998 and 2012. We used Cox regression with discrete time-varying exposure variables to model time to child mental health diagnosis during the first 15 years of life. Child mental health diagnoses include five categories: (i) externalising symptoms (anti-social behaviour), (ii) internalising symptoms (stress, anxiety, depression), (iii) developmental delay (e.g. learning disability), (iv) other (e.g. eating disorder, personality disorders), and (v) any mental health diagnosis, which was created by combining externalising symptoms, internalising symptoms and other. Our analyses were adjusted for social deprivation and perinatal risk factors.

RESULTS

There were strong univariable associations between the five individual ACEs, sociodemographic and perinatal factors (e.g. gestational weight at birth) and an increased risk of child mental health diagnoses. After adjusting for sociodemographic and perinatal aspects, there was a remaining conditional increased risk of any child mental health diagnosis, associated with victimisation (conditional hazard ratio (cHR) 1.90, CI 95% 1.34-2.69), and living with an adult with a common mental health diagnosis (cHR 1.63, CI 95% 1.52-1.75). Coefficients of product terms between ACEs and deprivation were not statistically significant.

CONCLUSION

The increased risk of child mental health diagnosis associated with victimisation, or exposure to common mental health diagnoses, and alcohol problems in the household supports the need for policy measures and intervention strategies for children and their families.

Attention-Deficit/Hyperactivity Disorder and Alcohol and Other Substance Use Disorders in Young Adulthood: Findings from a Canadian Nationally Representative Survey

AIM

(a) To document the prevalence and odds of (i) alcohol use disorders, (ii) cannabis use disorders, (iii) other drug use disorders and (iv) any substance use disorder (SUD), among young adults with and without ADHD, and (b) to investigate the degree to which the association between ADHD and SUDs is attenuated by socio-demographics, early adversities and mental health.

METHOD

Secondary analysis of the nationally representative Canadian Community Health Survey-Mental Health (CCHS-MH). The sample included 6872 respondents aged 20-39, of whom 270 had ADHD. The survey response rate was 68.9%.

MEASUREMENTS

Substance Use Disorder: World Health Organization's Composite International Diagnostic Interview criteria, SUDs, were derived from lifetime algorithms for alcohol, cannabis and other substance abuse or dependence. ADHD was based on self-report of a health professional's diagnosis.

FINDINGS

One in three young adults with ADHD had a lifetime alcohol use disorder (36%) compared to 19% of those without ADHD (P < 0.001). After adjusting for all control variables, those with ADHD had higher odds of developing alcohol use disorders (OR = 1.38, 95% CI: 1.05, 1.81), cannabis use disorders (OR = 1.46, 95% CI: 1.06, 2.00), other drug use disorders (OR = 2.07, 95% CI: 1.46, 2.95) and any SUD (OR = 1.69, 95% CI: 1.28, 2.23). History of depression and anxiety led to the largest attenuation of the ADHD-SUD relationship, followed by childhood adversities and socioeconomic status.

CONCLUSIONS

Young adults with ADHD have a high prevalence of alcohol and other SUDs. Targeted outreach and interventions for this extremely vulnerable population are warranted.

ADHD and risk for subsequent adverse childhood experiences: understanding the cycle of adversity

BACKGROUND

Children with adverse childhood experiences (ACEs) are more likely to develop Attention-Deficit/Hyperactivity Disorder (ADHD). The reverse relationship - ADHD predicting subsequent ACEs - is vastly understudied, although it may be of great relevance to underserved populations highly exposed to ACEs.

METHODS

Participants were 5- to 15-year-olds (48% females) with (9.9%) and without ADHD (DSM-IV criteria except age of onset) in a longitudinal population-based study of Puerto Rican youth. In each wave (3 yearly assessments, W1-3), ten ACEs (covering parental loss and maladjustment and child maltreatment) were examined, plus exposure to violence. Logistic regression models examined ADHD (including subtypes) and subsequent risk for ACEs. Also considered were interactions by age, sex, number of W1 ACEs, and recruitment site.

RESULTS

Children with W1 ADHD were more likely to experience subsequent adversity (OR: 1.63; 95% CI: 1.12-2.37) accounting for child age, sex, public assistance, maternal education, site, disruptive behavior disorders, and W1 ACEs. Inattentive (OR: 2.00; 95% CI: 1.09-3.66), but not hyperactive/impulsive or combined ADHD, predicted future ACEs.

CONCLUSIONS

ADHD predicts subsequent risk for ACEs, and the inattentive presentation may confer the most risk. Inattentive presentations could pose a bigger risk given differences in symptom persistence, latency to access to treatment, and treatment duration. The present study suggests a pathway for the perpetuation of adversity, where bidirectional relationships between ADHD and ACEs may ensnare children in developmental pathways predictive of poor outcomes. Understanding the mechanism underlying this association can help the development of interventions that interrupt the cycle of adversity exposure and improve the lives of children with ADHD.

Maltreatment of Children With Disabilities

Over the past decade, there have been widespread efforts to raise awareness about maltreatment of children. Pediatric providers have received education about factors that make a child more vulnerable to being abused and neglected. The purpose of this clinical report is to ensure that children with disabilities are recognized as a population at increased risk for maltreatment. This report updates the 2007 American Academy of Pediatrics clinical report "Maltreatment of Children With Disabilities." Since 2007, new information has expanded our understanding of the incidence of abuse in this vulnerable population. There is now information about which children with disabilities are at greatest risk for maltreatment because not all disabling conditions confer the same risks of abuse or neglect. This updated report will serve as a resource for pediatricians and others who care for children with disabilities and offers guidance on risks for subpopulations of children with disabilities who are at particularly high risk of abuse and neglect. The report will also discuss ways in which the medical home can aid in early identification and intervene when abuse and neglect are suspected. It will also describe community resources and preventive strategies that may reduce the risk of abuse and neglect.

Forcible Rape and Adolescent Friendship Networks

Studies have found that sexual victimization can adversely affect an adolescent's psychological well-being, physical health, and behavior. Little is known, however, about how friendships are influenced by such victimization. Drawing on research on sexual violence and the salience of peers among adolescents, the current study extends prior work by examining the effects of forcible rape on adolescent social networks. Using a subsample of females from the National Longitudinal Study of Adolescent to Adult Health (N = 4,386), the study employs multivariate regression analyses to estimate the effects of youth forcible rape on the popularity, centrality, and density of adolescent friendship networks and to determine whether depression and attachment to others (e.g., to friends and to school) mediate these effects. The analyses indicated that forcible rape was associated with a decrease in the popularity and centrality of females within their friendship networks; however, no effect on the density of these networks was identified. In addition, forcible rape effects on popularity and centrality were partially mediated by depression and social attachments. The results suggest that forcible rape may adversely affect adolescent females' levels of popularity and centrality within their friendship networks. Combined with prior research, the results indicate that the harmful effects of rape have the potential to extend across diverse domains, including social relationships. This possibility suggests that services and assistance to female adolescents may be useful in navigating these relationships after victimization. It suggests, too, that potential benefits that may arise from interventions that educate adolescents-victims and nonvictims alike-about the challenges that victims of sexual violence experience.

The role of psychosocial adversity in the aetiology and course of attention deficit hyperactivity disorder

INTRODUCTION

Attention deficit/hyperactivity disorder (ADHD) has genetic and environmental aetiological factors. There are few publications on the environmental factors. The objective of this review is to present the role of psychosocial adversity in the aetiology and course of ADHD.

METHODS

A search was carried out in the following databases: PubMed, ScienceDirect, SciELO, ClinicalKey, EMBASE, Lilacs, OVID, APA and PsycNET. English and Spanish were selected without being limited by type of study or year of publication. Finally, a qualitative synthesis was conducted.

RESULTS

ADHD development could be related to exposure to adverse factors in the family, school or social environment. It has been proposed as an explanatory mechanism that adversity interacts with genetic variants and leads to neurobiological changes. There may also be a gene-environment correlation whereby individual hereditary characteristics increase the risk of exposure to adversity, and indirectly increase the probability of developing ADHD. Research on psychosocial adversity represents a big challenge, not only due to the complexity of its construct, but also to the effect of subjective perception of a given event.

CONCLUSIONS

ADHD aetiology is complex and involves the interaction of both genetic and environmental factors, in which these factors correlate and cause the disorder. The study of the role of psychosocial adversity in ADHD is fundamental, but it remains a task that entails great difficulties.

Adverse Childhood Experiences Among Children with Neurodevelopmental Delays: Relations to Diagnoses, Behavioral Health, and Clinical Severity

Limited research has examined adverse childhood experiences (ACEs) among children at risk for neurodevelopmental delays. The purpose of this study was to (1) identify the prevalence of ACEs among children at risk for neurodevelopmental delays; (2) explore differences in rates of ACEs across neurodevelopmental diagnoses; and (3) examine relations between ACEs and indicators of behavioral health functioning (e.g., enuresis, feeding problems, sleeping problems, and functional impairment). Participants were 193 children ages 2 to 11 who received a developmental and behavioral pediatrics evaluation at a subspecialty clinic. Caregivers completed a survey about their child's ACEs, and researchers conducted an electronic health record review. Overall, 47% experienced at least one ACE. ACEs were not related to neurodevelopmental diagnosis or to externalizing symptoms. ACEs were related to difficulty sleeping, lower hyperactivity, and greater functional impairment at home. The relations between early adversity and poor behavioral health functioning may develop over time, creating an excellent window of opportunity for prevention work.

Lifetime Victimization in Children and Adolescents With ADHD

The objective of this study is to describe the frequency and type of victimization in a Spanish child and adolescent clinical ADHD sample and to analyze the association between the types of victimization and the severity of the symptoms. The sample is composed of 106 outpatients in treatment for ADHD, according to Diagnostic and Statistical Manual of Mental Disorders (4th ed.; DSM-IV) criteria. Symptom severity was measured by the Conners-3 scales. ADHD and comorbid diagnostics were evaluated with the Mini-Kid interview. The victimization experiences were studied using the Juvenile Victimization Questionnaire (JVQ). Children with child maltreatment history showed a greater intensity of hyperactivity/impulsivity, aggression and behavioral disorders as well as depression and anxiety disorders. The presence of peer victimization was associated with inattention, learning disorders, executive functioning, and relationship problems. Episodes of victimization should be considered in the treatment of the ADHD. Child maltreatment history is more associated with hyperactivity-impulsivity symptoms, while peer victimization is more associated with attentional symptoms.

Defining the role of exposure to ACEs in ADHD: Examination in a national sample of US children

BACKGROUND

Clinical presentations of ADHD vary according to biological and environmental developmental influences. An emerging field of research has demonstrated relationships between exposure to adverse childhood experiences (ACEs) and ADHD prevalence, particularly in high-risk samples. However, research examining the combined role of traditional risk factors of ADHD and ACEs is limited, and reliance on high-risk samples introduces sampling bias.

OBJECTIVE

To examine the influence of ACEs on ADHD diagnosis using a large, nationally representative sample of US children.

PARTICIPANTS AND SETTING

Nationally representative samples (2017 and 2018) of 40,075 parents from the National Survey of Children's Health (NSCH).

METHODS

We conducted logistic regression models to examine the association of ACEs and ADHD diagnosis, controlling for child and parent demographic variables and other risk factors.

RESULTS

Exposure to ACEs was significantly associated with parent-reported ADHD diagnosis, controlling for known parental and child-risk factors of ADHD. The association followed a gradient pattern of increased ADHD prevalence with additional exposures. Compared to children with no ACEs, the odds of an ADHD diagnosis were 1.39, 1.92, and 2.72 times higher among children with one, two and three or more ACEs. The ACE most strongly associated with the odds of ADHD was having lived with someone with mental illness closely followed by parent/guardian incarceration.

CONCLUSIONS

Results further strengthen the evidence that ACEs exposure is associated with increased ADHD prevalence. Clinicians should assess ACEs in the diagnosis of ADHD. Furthermore, results of the study lend support to the efforts of agencies (both institutional and state-level) promoting routine screening of ACEs in children.

Prospective Associations of Child Maltreatment Subtypes With Adult Educational Attainment: Tests of Mediating Mechanisms Through School-Related Outcomes

This study tests a developmental cascades model in which childhood maltreatment is hypothesized to influence adult educational attainment by increasing attention problems and reducing successful school experiences during adolescence. Two path models tested direct and indirect associations of childhood maltreatment with adult educational attainment. Model 1 used three parent-reported subtypes of childhood maltreatment (physical/emotional abuse, sexual abuse, neglect). Model 2 added an agency-reported measure of childhood maltreatment. Both models detected indirect effects of childhood maltreatment subtypes on adult educational attainment through attention and school discipline problems, poor school engagement, and low extracurricular involvement. Model 2 also detected a direct effect of agency-reported childhood maltreatment on the adult outcome. Regardless of the type of maltreatment or data source used, school factors mediated the associations of childhood maltreatment on adult educational attainment. Promoting school engagement and reducing disciplinary referrals for maltreated youth could improve their educational attainment over the long term.

Childhood maltreatment and DNA methylation: A systematic review

DNA methylation (DNAm) - an epigenetic process that regulates gene expression - may represent a mechanism for the biological embedding of early traumatic experiences, including childhood maltreatment. Here, we conducted the first systematic review of human studies linking childhood maltreatment to DNAm. In total, 72 studies were included in the review (2008-2018). The majority of extant studies (i) were based on retrospective data in adults, (ii) employed a candidate gene approach (iii) focused on global maltreatment, (iv) were based on easily accessible peripheral tissues, typically blood; and (v) were cross-sectional. Two-thirds of studies (n = 48) also examined maltreatment-related outcomes, such as stress reactivity and psychiatric symptoms. While findings generally support an association between childhood maltreatment and altered patterns of DNAm, factors such as the lack of longitudinal data, low comparability across studies as well as potential genetic and 'pre-exposure' environmental confounding currently limit the conclusions that can be drawn. Key challenges are discussed and concrete recommendations for future research are provided to move the field forward.

Child maltreatment and attentional problems: A longitudinal birth cohort study

OBJECTIVE

To examine whether child maltreatment is associated with attentional problems in adolescence (14 years) and young adulthood (21 years), and whether outcomes depend on the type of maltreatment (sexual vs non-sexual).

METHODS

Data from a population based cohort study involving 3778 mother-child pairs were linked with data from the state child protection agency to examine associations between child abuse and neglect and attention problems, measured using the Achenbach Child Behaviour Checklist (CBCL) and the Achenbach Young Adult Self Report (YASR).

RESULTS

245 (6.5%) participants had been the subject of notification for non-sexual maltreatment (one or more of neglect, emotional or physical abuse) compared with only 54 (1.4%) who had been subject of notification for suspected sexual abuse. After adjusting for potential confounding variables including maternal, participant and sociodemographic factors, we found those exposed to non sexual maltreatment were likely to experience attentional problems at 14 years (p < .001) and 21 years of age (p = .044), compared with those participants who had not experienced non sexual maltreatment. By contrast, at age 14 years, sexual abuse was associated with attentional problems only as reported by the participant, not their carer. Results at 21 years of age for those exposed to sexual child maltreatment (p=.655) were again in contrast to the observed association between attentional problems and non sexual child maltreatment (p = .035).

CONCLUSION

In this study, non-sexual maltreatment in childhood is associated with attentional problems at both 14 years and 21 years of age. These findings highlight the need for targeted research to better understand the longer term mental health outcomes for children exposed to non-sexual maltreatment. Potential implications for mental health services include the need for broader screening at presentation and importantly, greater collaboration with schools, general practitioners and paediatricians, given the greatest impact would arguably be within these settings.

The Association Between Child Abuse and Emotional and Behavioral Problems in Chinese School-Aged Boys With Attention Deficit Hyperactivity Disorder

The aim of our study was to investigate the relationship between child abuse and emotional and behavioral problems in Chinese school-aged boys with attention deficit hyperactivity disorder (ADHD). Forty-eight school-aged boys with ADHD and 77 male healthy controls completed the final assessments that included the Child Behavior Checklist, the Barratt Impulsiveness Scale Version 11, the Screen for Child Anxiety Related Disorders, the Depression Self-Rating Scale for Children, and the Childhood Trauma Questionnaire, Short Form. Our findings showed that child abuse could associate with the behavioral problems in ADHD. Regression analysis further showed that child abuse (especially emotional abuse and physical abuse), adverse living conditions, and school anxiety significantly could be contributors to behavioral problems in boys with ADHD. Our study indicated that child abuse may be associated with the behavioral problems in Chinese school-aged boys with ADHD.

Persistence and Subtype Stability of ADHD Among Substance Use Disorder Treatment Seekers

Objective: To examine ADHD symptom persistence and subtype stability among substance use disorder (SUD) treatment seekers. Method: In all, 1,276 adult SUD treatment seekers were assessed for childhood and adult ADHD using Conners' Adult ADHD Diagnostic Interview for Diagnostic and Statistical Manual of Mental Disorders (4th ed.; DSM-IV; CAADID). A total of 290 (22.7%) participants met CAADID criteria for childhood ADHD and comprise the current study sample. Results: Childhood ADHD persisted into adulthood in 72.8% (n = 211) of cases. ADHD persistence was significantly associated with a family history of ADHD, and the presence of conduct disorder and antisocial personality disorder. The combined subtype was the most stable into adulthood (78.6%) and this stability was significantly associated with conduct disorder and past treatment of ADHD. Conclusion: ADHD is highly prevalent and persistent among SUD treatment seekers and is associated with the more severe phenotype that is also less likely to remit. Routine screening and follow-up assessment for ADHD is indicated to enhance treatment management and outcomes.

A Systematic Review of Polyvictimization among Children with Attention Deficit Hyperactivity or Autism Spectrum Disorder

Children with Autism Spectrum Disorder (ASD) or Attention Deficit Hyperactivity Disorder (ADHD) have shown an increased risk for violence and victimization. However, research on exposure to multiple forms of victimization in different contexts are scarce. Hence, the current aim is to review the evidence about polyvictimization among children with ASD or ADHD. PsycInfo, ERIC, ERC, Scopus, and PubMed databases were systematically searched until 12 March 2019 to identify empirical studies with reported prevalence rates of at least four forms of victimization among children with ASD or ADHD. A total of 6/1300 articles were included in the review, ranging in sample sizes from 92 to 4114. The reported prevalence rates for polyvictimization were 1.8% and 23.1% for children with ASD and 7.3% for children with ADHD. The results emphasize the high prevalence of violence and victimization, including polyvictimization, among children with ASD or ADHD. Polyvictimization among children with ASD or ADHD is a highly under researched area. Significant knowledge gaps and important methodological considerations that provide important implications for future research include lack of information on cyber bullying, frequency or intensity of victimization, and the failure to include children as informants and to report health outcomes associated with polyvictimization.

Evidence of concurrent and prospective associations between early maltreatment and ADHD through childhood and adolescence

PURPOSE

An emerging body of work suggests a link between childhood maltreatment and attention-deficit hyperactivity disorder (ADHD). However, research examining the role of maltreatment in the early course of the disorder lacks robust evidence from longitudinal studies. Our aim was to examine concurrent and prospective associations between maltreatment experiences and ADHD diagnosis and sex differences, and to estimate the association between repetitive maltreatment exposure and ADHD through childhood and adolescence.

METHODS

Data were obtained from the Boricua Youth Study, a longitudinal study of 2480 children and adolescents of Puerto Rican background. Neglect, physical, emotional and sexual abuse, and foster placement were regressed on ADHD diagnosis measured at each of three waves using the Diagnostic Interview Schedule for Children-IV. Multilevel regressions estimated the effects of exposure on ADHD, adjusted by age, sex, income, household education, parental psychopathology, comorbidity and ADHD medication status.

RESULTS

Emotional abuse and foster placement had robust associations with ADHD diagnosis. For girls, physical abuse had a threefold increase in the odds of having ADHD diagnosis; for boys, associations were observed only for emotional abuse. Prospective models examining the risk of ADHD following maltreatment provided initial evidence for the effects of physical abuse on ADHD, and a linear trend for repetitive exposure suggested increased probability for disorder persistence.

CONCLUSIONS

Associations between early maltreatment and ADHD were robust. Different categories of maltreatment increase the likelihood of ADHD for girls and boys. Increased exposure to maltreatment may predict symptom persistence. Interventions addressing ADHD must consider the effects of both sex and family environment.

Brain structure mediates the association between socioeconomic status and attention-deficit/hyperactivity disorder

Low socioeconomic status (SES) is associated with greater risk for symptoms of attention-deficit/hyperactivity disorder (ADHD). One mechanism through which SES may confer risk for ADHD is by influencing brain structure. Alterations to cortical thickness, surface area and subcortical volume have been associated with low SES and with the presence of ADHD across multiple studies. The current study examined whether cortical thickness, surface area or subcortical volume mediate the associations between SES and ADHD in youth 3-21 years old (N = 874) from the Pediatric Imaging, Neurocognition and Genetics Study. Freesurfer was used to estimate cortical thickness, surface area and subcortical volume from structural magnetic resonance imaging. Parents reported on demographics, family SES, ADHD diagnoses and the presence of child attention problems. Statistical mediation was assessed using a bootstrap resampling procedure. Controlling for parental ADHD, child age, gender, birth weight and scanner, children in low SES families were more likely to be in the ADHD group. Consistent with previous reports in this sample, low SES was associated with reduced surface area across the frontal lobe and reduced subcortical volume in the amygdala, cerebellum, hippocampus and basal ganglia. Of these regions, a significant indirect effect of SES on ADHD status through subcortical volume was observed for the left cerebellum (95% confidence interval: 0.004, 0.022), the right cerebellum (95% confidence interval: 0.006, 0.025), and the right caudate (95% confidence interval: 0.002, 0.022). Environmentally mediated changes in the cerebellum and the caudate may be neurodevelopmental mechanisms explaining elevated risk of ADHD in children in low SES families.

Association of Friday School Report Card Release With Saturday Incidence Rates of Agency-Verified Physical Child Abuse

Importance

Corporal punishment is a leading risk factor for physical abuse. Strong anecdotal evidence from physicians and other professionals working in child protection suggest that punishment-initiated physical abuse for school-aged children increases after release of report cards. However, no empirical examination of this association has occurred.

Objective

To examine the temporal association between school report card release and incidence rates (IRs) of physical abuse.

Design, Setting, and Participants

This retrospective study reviewed calls to a state child abuse hotline and school report card release dates across a single academic year in Florida. Data were collected in a 265-day window from September 8, 2015, to May 30, 2016, in the 64 of 67 Florida counties with report card release dates available (16 960 days). Participants included all children aged 5 to 11 years for whom calls were made. A total of 1943 verified cases of physical abuse were reported in the study period in the 64 counties. Data were analyzed from October 2017 through May 2018.

Exposures

School report cards release across a single academic year, measured daily by county.

Main Outcomes and Measures

Daily counts of calls to a child abuse hotline that later resulted in agency-verified incidents of child physical abuse across a single academic year by county.

Results

During the academic year, 167 906 calls came in to the child abuse hotline for children aged 5 to 11 years; 17.8% (n = 29 887) of these calls were suspected incidents of physical abuse, and 2017 (6.7%) of these suspected incidents were later verified as cases of physical abuse before excluding the 3 counties with no release dates available. Among the 1943 cases included in the analysis (58.9% males [n = 1145]; mean [SD] age, 7.69 [1.92] years), calls resulting in verified reports of child physical abuse occurred at a higher rate on Saturdays after a Friday report card release compared with Saturdays that do not follow a Friday report card release (IR ratio, 3.75; 95% CI, 1.21-11.63; P = .02). No significant association of report card release with IRs was found for any other days of the week.

Conclusion and Relevance

This association of school report card release and physical abuse appears to illustrate a unique systems-based opportunity for prevention.

The effect of left-behind phenomenon and physical neglect on behavioral problems of children

OBJECTIVE

Left-behind children have a high incidence of behavioral problems in some Eastern countries, especially China. We sought to assess the combined effects of physical neglect, a major embodiment of the left-behind phenomenon, and the trauma of being left behind on subsequent behavioral problems.

METHOD

776 children (including 600 left-behind children) aged 12-16 years were chosen by cluster sampling in rural China. The Childhood Trauma Questionnaire-Short Form and the Conners Teacher Rating Scale were used to evaluate physical neglect and behavioral problems.

RESULTS

Left-behind children experienced more physical neglect (mean difference = 0.63; 95%CI 0.15-1.10; P = 0.01) and were more inattentive (mean difference=0.11; 95%CI 0.03-0.19; P = 0.009) than non-left-behind children. Physically neglected left-behind children had higher scores for conduct problems, inattention, and hyperactivity index than non-left-behind without physical neglect group (P < 0.05 for each). Among left-behind children, physical neglect group had significantly more conduct problems than those of controls (mean difference=0.14; 95%CI 0.05-0.23; P = 0.008). Physically neglected non-left-behind children had higher scores for conduct problems than those of left-behind children without physical neglect (mean difference=0.31; 95%CI 0.13-0.47; P = 0.003). Among physically neglected children, left-behind children had significantly higher scores for inattention than those of non-left-behind children (mean difference=0.13; 95%CI 0.04-0.22; P = 0.037).

CONCLUSION

Left-behind children have more behavioral problems than non-left-behind children. Physical neglect may result in more severe conduct problems than those associated with staying behind, and staying behind may lead to inattention. Exposure to both may lead to more obvious behavioral problems. Therefore, we should accord more attention to physically neglected and left-behind children.

Le TDAH chez les enfants et les adolescents, partie 1 : l’étiologie, le diagnostic et la comorbidité

Le trouble de déficit de l’attention/hyperactivité (TDAH) est un trouble neurodéveloppemental chronique. La Société canadienne de pédiatrie a préparé trois documents de principes après avoir effectué des analyses bibliographiques systématiques. Leurs objectifs s’établissent comme suit : 1) Résumer les données probantes cliniques à jour sur le TDAH. 2) Établir une norme pour les soins du TDAH. 3) Aider les cliniciens canadiens à prendre des décisions éclairées et fondées sur des données probantes pour rehausser la qualité des soins aux enfants et aux adolescents qui présentent cette affection.

Les thèmes abordés dans la partie 1, qui est axée sur le diagnostic, incluent la prévalence, la génétique, la physiopathologie, le diagnostic différentiel, ainsi que les troubles psychiatriques et les troubles du développement comorbides. En plus des recherches dans les bases de données, les auteurs ont analysé les directives les plus récentes de l’American Academy of Pediatrics , de l’American Academy of Child and Adolescent Psychiatry , du National Institute for Health and Clinical Excellence , du Scottish Intercollegiate Guidelines Network et de l’Eunethydis European ADHD Guidelines Group . Puisque le TDAH est un trouble hétérogène, son évaluation médicale complète devrait toujours inclure une anamnèse fouillée, un examen physique et une évaluation approfondie du diagnostic différentiel et des comorbidités connexes. Les auteurs proposent des recommandations précises sur la récolte d’information, les tests à effectuer et les orientations vers divers services.

Child Maltreatment and Associated Parental Factors Among Children With ADHD: A Comparative Study

OBJECTIVE

This study investigated the role of child and parental factors in maltreatment of children with ADHD compared with a healthy control group.

METHOD

We examined the rates and correlations of child maltreatment by parents in a sample of children with ADHD ( n = 100) and a matched comparison sample of children without ADHD ( n = 100), all aged 6 to 11 years. Parent and child ratings evaluated demographic characteristics, severity of ADHD symptoms, and childhood trauma exposure.

RESULTS

According to regression analysis, maternal hyperactivity/impulsivity and male gender of the child increase the emotional abuse; whereas maternal history of emotional abuse and physical neglect and paternal attention deficit increase sexual abuse, and higher maternal hyperactivity/impulsivity increases emotional neglect of ADHD children.

CONCLUSION

The study's findings provide strong evidence that the maltreatment of children with ADHD is more associated with parental factors than with the symptoms of ADHD in children.

ADHD in children and youth: Part 1-Etiology, diagnosis, and comorbidity

Attention-deficit hyperactivity disorder (ADHD) is a chronic neurodevelopmental disorder. Three position statements have been developed by the Canadian Paediatric Society, following systematic literature reviews. Statement objectives are to: 1) Summarize the current clinical evidence regarding ADHD,2) Establish a standard for ADHD care, and3) Assist Canadian clinicians in making well-informed, evidence-based decisions to enhance care of children and youth with this condition. Specific topics reviewed in Part 1, which focuses on diagnosis, include: prevalence, genetics, pathophysiology, differential diagnosis and comorbid psychiatric disorders and developmental disorders. In addition to database searches, the most recent guidelines of the American Academy of Pediatrics, the American Academy of Child and Adolescent Psychiatry, the National Institute for Health and Clinical Excellence, the Scottish Intercollegiate Guidelines Network, and the Eunethydis European ADHD Guidelines Group, were reviewed. Because ADHD is a heterogeneous disorder, comprehensive medical assessment for ADHD should always include a complete history, a physical examination, and a thorough consideration of differential diagnosis and related comorbidities. Specific recommendations for information gathering, testing, and referral are offered.

Association of Maternal Exposure to Childhood Abuse With Elevated Risk for Attention Deficit Hyperactivity Disorder in Offspring

Children whose mothers experienced childhood abuse are more likely to suffer various neurodevelopmental deficits. Whether an association exists specifically for attention deficit hyperactivity disorder (ADHD) is unknown. We examined the association of maternal experience of childhood abuse with ADHD in offspring, assessed by maternal report of diagnosis and validated with the ADHD Rating Scale-IV in a subsample, in the Nurses' Health Study II (n = 49,497 mothers; n = 7,607 case offspring; n = 102,151 control offspring). We examined whether 10 adverse perinatal circumstances (e.g., prematurity, smoking) or socioeconomic factors accounted for a possible association. Exposure to abuse was associated with greater prevalence of ADHD in offspring (8.7% of offspring of women exposed to severe abuse vs. 5.5% of offspring of women not abused, P = 0.0001) and with greater risk for ADHD when the model was adjusted for demographic factors (male offspring, risk ratio (RR) = 1.6, 95% confidence interval (CI): 1.3, 1.9; female offspring, RR = 2.3, 95% CI: 1.7, 3.0). After adjustment for perinatal factors, the association of maternal childhood abuse with ADHD in offspring was slightly attenuated (male offspring, RR = 1.5, 95% CI: 1.2, 1.8; female offspring, RR = 2.1, 95% CI: 1.6, 2.8). We identified an association between maternal experience of childhood abuse and risk for ADHD in offspring, which was not explained by several important perinatal risk factors or socioeconomic status.

Associations between abuse/neglect and ADHD from childhood to young adulthood: A prospective nationally-representative twin study

Child maltreatment has consistently been found to be associated with attention deficit/hyperactivity disorder (ADHD). However, the robustness of this association and the direction of the link between maltreatment and ADHD remain unclear. We used data from the Environmental Risk (E-Risk) Longitudinal Twin Study, a cohort of 2232 British twins, to investigate the associations between exposure to abuse/neglect and ADHD in childhood and in young adulthood, and to test their robustness and specificity. We also aimed to test longitudinal associations between abuse/neglect and ADHD from childhood to young adulthood, controlling for confounders. Results indicated strong associations between abuse/neglect and ADHD in childhood and also in young adulthood. In childhood, the association was concentrated among children with comorbid conduct disorder. Longitudinal analyses showed that childhood ADHD predicted abuse/neglect in later years. This association was again concentrated among individuals with comorbid conduct disorder. Abuse/neglect in childhood was not associated with later ADHD in young adulthood after adjusting for childhood ADHD. Our study does not provide support of a causal link between child abuse/neglect and adult ADHD but highlights the possibility of a long-term effect of disruptive behaviors on the risk for experiencing abuse/neglect. These findings emphasize the need for clinicians treating people with ADHD, especially those with comorbid conduct disorder, to be aware of their increased risk for experiencing abuse/neglect. Interventions aimed at reducing risks of abuse/neglect should also focus on the environment of individuals with disruptive behaviors.

The Impact of Emotional Lability Symptoms During Childhood in Adults With ADHD

OBJECTIVE

To determine whether emotional lability (EL) in adult ADHD patients can already be identified during their childhood and the extent to which this childhood symptomatology can predict EL in adulthood.

METHOD

Seven hundred eighteen adults with ADHD were examined. EL in adulthood was assessed using the Conners' Adult ADHD Rating Scales (CAARS). According to Conners' definition of EL, seven items from the Wender Utah Rating Scale (WURS) were used to determine this symptomatology in childhood.

RESULTS

EL was identified in 31.1% of the participants, and 29.6% of this subgroup reported EL symptoms in childhood. Childhood EL was the strongest predictor of these symptoms in adulthood (odds ratio [OR] = 6.18). ADHD subtype, female sex, family history of ADHD, psychiatric comorbidities, and physical abuse were also related to EL development/persistence.

CONCLUSION

Screening for EL symptoms in children with ADHD is important, as they are the strongest predictor of this symptomatology in adulthood.