Neglect in Childhood, Problem Behavior in Adulthood.

Few studies have reported problem behaviors in adulthood related to the timing of child neglect. The objective was to examine the relationship between classes of child neglect and later behavior. The sample included 473 participants from the prospective Longitudinal Studies of Child Abuse and Neglect (LONGSCAN); their mean age was 23.8 years. They completed an online survey regarding behaviors and experiences in early adulthood. Neglect was assessed via Child Protective Services (CPS) and self-reports of neglect. Latent class analysis (LCA) identified three classes: Late Neglect, Chronic Neglect, and Limited Neglect. There were significant differences between Limited and Late Neglect regarding later intimate partner aggression and violence (IPAV) and psychological distress, and among all classes for criminal behavior. High-risk youth experiencing neglect beginning in mid-adolescence appear especially vulnerable to later criminal behavior, psychological distress, and IPAV. Those working with such youth can help ensure that their needs are adequately met, to prevent or mitigate problems in adulthood.

Childhood Trauma Questionnaire-Short Form (CTQ-SF): Dimensionality, validity, reliability and gender invariance among Nigerian adolescents.

BACKGROUND: Childhood abuse and neglect have been associated with long term psychological consequences. There is no valid, reliable and gender invariant scale available for the evaluation of childhood abuse and neglect among Nigerian adolescents. OBJECTIVE: To evaluate the Childhood Trauma Questionnaire-Short Form (CTQ-SF) in terms of its factor structure, validity, reliability, and gender measurement invariance among Nigerian adolescents. METHOD: Senior high school adolescents (n = 1337, aged 13-18 years) completed the CTQ-SF in addition to the Hospital Anxiety and Depression Scale (HADS), the 12-items General Health Questionnaire (GHQ-12), the Rosenberg Self-Esteem Scale (RSES) and the Positive and Negative Suicide Ideation Inventory (PANSI). Confirmatory factor analysis (CFA) was used to test the original (Bernstein et al., 2003) and alternative (Gerdner & Allgulander, 2009) CTQ-SF models. The fit indices of these two models tested applying CFA were compared. Concurrent validity of the CTQ-SF was examined with correlational analyses with other study measures. The internal consistencies of the CTQ-SF and its subscales were examined with the MacDonald's omega (ωh) coefficients. Gender measurement invariance was evaluated with multiple-group CFA (MGCFA). RESULTS: The alternative CTQ-SF model compared to the original model exhibited a better fit (CFI = 0.928, RMSEA = 0.046 [90 %CI: 0.043-0.050], SRMR = 0.044). The internal consistency and concurrent validity of this model were satisfactory. MGCFA provided evidence that supported the configural, metric and scalar gender measurement invariance. CONCLUSION: The alternative CTQ-SF exhibited satisfactory validity, reliability, and gender measurement invariance and, therefore, could be used for the evaluation and gender comparison of abuse and neglect among Nigerian adolescents.

Effect of gender on childhood maltreatment in the state of Qatar: Retrospective study.

BACKGROUND: International maltreatment studies show a range of results for overall rates of child maltreatment and gender differences. The ISPCAN Child Abuse Screening Tools (ICAST) were designed to reduce variability in data collection. OBJECTIVE: To investigate the influence of gender on the experiences of discipline and maltreatment in childhood among young people in Qatar, informingpractice and policy development. PARTICIPANTS AND SETTING: A representative sample of Qatari youth aged between 18 and 24 years were identified using a cross sectional random household survey. The total number of subjects was 697 of whom 46.8% were male. METHODS: Participants self-administered the ICAST-R (retrospective), which includes questions about exposure below the age of 18 to potentially abusive physical, psychological and sexual behaviors. Verbal consent was obtained following an introductory explanation and assurance ofconfidentiality. RESULTS: At least one form of physical abuse was reported by 22.1% of participants and was significantly higher among males (28.2%) than females (16.7%) p<0.001). A trend for greater abuse was identified among boys aged over five which become statistically significant between 10 -13 years (p=0.001). For psychological abuse the overall rates were very similar, 16.2% for girls and 15.0% for boys. Only 17 (2.5%) of participants reported sexual abuse, with no statistically significant gender difference. CONCLUSIONS: Physical, psychological and sexual abuse all occur in Qatar. This study demonstrates the importance of identifying the role of gender and age when exploring the extent and nature of maltreatment in a population. It allows for better targeting of preventative action.

It's not "Just poverty": Educational, social, and economic functioning among young adults exposed to childhood neglect, abuse, and poverty.

BACKGROUND: Neglect is the most common allegation in Child Protective Services (CPS) investigations. Researchers and media have questioned whether and how CPS-investigated neglect differs from poverty. Prior studies are limited by self-reported or cross-sectional measures, small samples, and short observation periods. OBJECTIVE: (1) To estimate the "added harm" of CPS-investigated neglect, net of poverty exposure (depth and duration), on high school completion, employment and earnings, incarceration, and teen parenthood; (2) To assess whether abuse is a stronger risk factor for adverse outcomes than neglect. PARTICIPANTS AND SETTING: 29,154 individuals born in 1993-1996 from Milwaukee County, WI, who either received food assistance or were reported to CPS before age 16. METHOD: Using logistic regression with a rich set of social and demographic controls, we compared individuals with CPS-investigated neglect, abuse, or both abuse and neglect in early childhood or adolescence to those who experienced poverty but not CPS involvement. We calculated cumulative measures of poverty duration and poverty depth between ages 0 and 16 for the full sample using public benefit records. RESULTS: Outcomes among children with alleged or confirmed neglect were statistically significantly worse in all domains than impoverished children without maltreatment allegations, and similar to children with alleged or confirmed abuse. Effect sizes varied by outcome. CONCLUSIONS: Overall, this study suggests that CPS allegations of neglect are distinct from poverty and an important risk factor for adverse outcomes in adulthood.

Effect of child abuse and neglect on risk behaviors in inner-city minority female adolescents and young adults.

BACKGROUND: Over six million children each year are referred to child protective services for child abuse (sexual, physical and emotional) and neglect (physical and emotional). OBJECTIVE: While the relationship between child sexual abuse and sexually transmitted infections has been documented, there has been little research regarding the effects of other forms of maltreatment. PARTICIPANTS AND SETTING: 882 inner-city females aged 12-20 years of age seen at a large adolescent and young adult (AYA) health center in New York City between 2012-2017. METHODS: History of maltreatment was assessed using the Childhood Trauma Questionnaire. Associations with depressive symptoms, antisocial behavior, peer deviancy, drug/alcohol use, and risky sexual behaviors were assessed. RESULTS: History of maltreatment was common in our cohort of inner-city AYA females, with 59.6 % reporting any type of maltreatment, including sexual abuse (17.5 %), physical abuse (19.5 %) or neglect (26.2 %), and emotional abuse (30.7 %) or neglect (40.4 %). We observed significant associations between all forms of maltreatment and risk of depression, drug/alcohol use, antisocial behaviors, peer deviancy, and risky sexual risk behaviors (including having a higher number of sexual partners, having a sexual partner 5+ years older, and anal sex). Physical and emotional abuse were associated with having unprotected sex while under the influence of drugs/alcohol. CONCLUSIONS AND RELEVANCE: Reporting a history of maltreatment was associated with an increased likelihood of engaging in risky sexual and antisocial behaviors, as well as depression in inner-city female youth. These data highlight the broad, lingering repercussions of all types of child maltreatment.

Does child maltreatment predict alcohol use disorders in young adulthood? A cohort study of linked notifications and survey data.

BACKGROUND AND AIMS: Most studies of the association between child maltreatment and subsequent problem alcohol use are retrospective. We studied the association of prospectively substantiated child maltreatment with problem alcohol use in adulthood. DESIGN: We used a prospective cohort record linkage correlational design using data from a statutory child protection agency of prospectively substantiated child maltreatment linked to a birth cohort from a major metropolitan maternity hospital. SETTING: The Mater-University of Queensland Study of Pregnancy in Brisbane, Australia. PARTICIPANTS: Of the 3762 young people at the 21-year follow-up, 169 (4.5%) had a history of substantiated maltreatment by 16 years. This was most commonly emotional abuse (n = 90). MEASUREMENTS: The main outcome was heavy alcohol use at the 21-year follow-up, defined as four or more standard drinks per day. Secondary outcomes were life-time and 12-month diagnoses of alcohol use disorders in  2531 participants who completed the Composite International Diagnostic Interview-auto (CIDI-auto) version. Predictor variables were physical, sexual and emotional abuse, as well as neglect. FINDINGS: At follow-up, 407 of the 3762 participants reported heavy alcohol use (10.8%). On adjusted analyses, participants who had experienced emotional abuse were significantly more likely to report heavy alcohol use at the time of interview (adjusted odds ratio = 1.856; 95% confidence interval = 1.038-3.319; P = 0.037). Neglect was associated with a life-time CIDI diagnosis of an alcohol use disorder. Other types of child maltreatment were not significantly associated with any of the outcomes. CONCLUSIONS: Prospectively identified experience of childhood emotional abuse and neglect appears to be positively associated with problem alcohol use at age 21.

Child maltreatment and the risk of antisocial behaviour: A population-based cohort study spanning 50 years.

BACKGROUND: Child maltreatment is associated with an increased risk of antisocial behaviour; however, whether this risk persists and remains stable across the life-course is undetermined. OBJECTIVE: To examine associations between chid maltreatment and antisocial behaviour across the life-course. PARTICIPANTS AND SETTING: The study used 50 years of longitudinal data from the 1958 British birth cohort (n = 8088) measuring child neglect (prospectively) and abuse (retrospectively) and antisocial behaviour from childhood-to-adulthood. METHODS: Latent growth curve models analysed the longitudinal course of antisocial behaviour across childhood (7-16years) and adulthood (23-50years) as a function of child maltreatment. We used directed acyclic graphs to identify, and adjust for, potential confounders (biological, family, social). RESULTS: Child maltreatment was associated with higher levels of antisocial behaviour at all seven timepoints across the life-course (7-50years). Antisocial behaviour was elevated during childhood and adulthood in individuals who were maltreated, independently of confounding factors. Individuals who experienced multiple types of maltreatment were at the greatest risk of antisocial behaviour. Each additional maltreatment type was associated with an increased risk during both childhood (B = 0.173; SE = 0.024; p < .001) and adulthood (B = 0.137; SE = 0.014; p < .001). There was limited evidence that child maltreatment was associated with within-person rates of change, indicating that the increased risk of antisocial behaviour did not change over time. CONCLUSIONS: Child maltreatment is associated with an increased risk of antisocial behaviour, with a persistent and stable association remaining up to age 50. Our results highlight the burden of child maltreatment and the importance of providing long-term support for individuals who experience child maltreatment.

Relationship between the subtypes of child abuse and affective temperaments: Comparison of depression and bipolar disorder patients and healthy controls using the reclassified Child Abuse and Trauma Scale.

BACKGROUND: We previously reported that child abuse indirectly predicts the diagnosis of major depressive disorder (MDD) or bipolar disorder (BP) based on higher scores of affective temperaments; however, the subtypes of child abuse have not been examined sufficiently. Therefore, in the present study, we used the reclassified version of the Child Abuse and Trauma Scale (CATS) to determine how the subtypes of child abuse affect affective temperaments. METHODS: A total of 502 participants (212 healthy controls, 163 patients with MDD and 127 patients with BP) were administered the Japanese version of the CATS; the Japanese version of the Temperament Evaluation of Memphis, Pisa, Paris, and San Diego Autoquestionnaire; and the Japanese version of the Patient Health Questionnaire-9. Data were analyzed by exploratory and confirmatory factor analyses, as well as by univariate and multivariate analyses. RESULTS: A five-factor structure was appropriate for the CATS. The MDD group scored significantly higher on all subtypes of the reclassified CATS than did the control group. Among the subscales of the reclassified CATS, physical abuse and loneliness/psychological stress were significant predictors of affective temperaments, although all subscales were significantly associated with affective temperaments compared to the original CATS. LIMITATIONS: Since child abuse was assessed retrospectively, there might be recall bias. Furthermore, as the study was limited to Japanese individuals, particularly those with mood disorders, the findings might not be generalizable. CONCLUSIONS: This study revealed that the subtypes of child abuse (especially physical abuse and loneliness/psychological stress) might be associated with MDD and BP.

History of abuse and neglect and their associations with mental health in rescued child labourers in Nepal.

OBJECTIVES: Little is known about rates of childhood maltreatment in low-income countries, particularly among marginalised sectors of society. Economic hardships mean that in such countries, many children and young people are exploited in the labour force and/or are trafficked, placing them at greater risk for being exposed to other forms of maltreatment. Cultural norms endorsing the use of physical and emotional acts to discipline children further exacerbate this risk. Here, we assessed the rates of childhood victimisation experiences and associated mental health problems in Nepalese youth rescued from illegal child labour including trafficking. METHODS: One hundred and three young people aged 12-18 years living in out-of-home care institutions and rescued from child labour/trafficking completed translated versions of selected modules from the Juvenile Victimisation Questionnaire, the Youth Inventory and the Strength and Difficulties Questionnaire. Care-home employees responsible for looking after the young people completed the Adolescent Symptom Inventory and the Strength and Difficulties Questionnaire. Analysis described maltreatment frequencies and compared individuals who had and had not experienced any form of maltreatment on the presence/absence of psychiatric diagnoses. RESULTS: Seventy-two percent of participants experienced some form of maltreatment in their lifetime. Rates for each maltreatment type were 46.6% for physical abuse, 40.77% for emotional abuse, 27.2% for sexual abuse and 33% for neglect. Symptoms indicative of anxiety disorders and trauma were commonly reported especially in victims of childhood maltreatment. CONCLUSIONS: Our estimates of physical abuse in this at-risk juvenile sample were commensurate to those reported in general-population youth samples in Nepal, but sexual and emotional abuse rates were somewhat lower. The potential presence of anxiety and trauma in this sample that may result from maltreatment requires replication, but underscores an urgent need for routine mental health screening in rescued child labourers during rehabilitation efforts.

Early childhood maltreatment experience and later sexual behavior in Brazilian adults undergoing treatment for substance dependence

Objective: To investigate the prevalence of early childhood maltreatment and associations with later sexual behavior among adult substance users. Methods: A cross-sectional study enrolled 134 substance dependents who sought outpatient care in São Paulo, Brazil. Childhood trauma prevalence was assessed using the Childhood Trauma Questionnaire (CTQ). The Sexual Addiction Screening Test (SAST), drug of choice (DOC), and sexual behavior were also investigated. Results: The sample was composed predominantly of single adult males (76.1%), with alcohol as the DOC (73.9%). Experiences of emotional neglect (88.1%), emotional abuse (80.6%), physical neglect (78.4%), physical abuse (64.2%), and sexual abuse (31.3%) were prevalent. Women were more likely to have been sexually abused (OR 2.9, 95%CI 1.15-7.61) and physically abused (OR 3.7, 95%CI 1.31-10.6) in childhood. Those who were sexually abused in adulthood were more likely to have suffered physical abuse in childhood (OR 6.9, 95%CI 1.45-11.8). The odds of having been sexually abused in childhood were higher among subjects who reported to have exchanged sexual favors for drugs (OR 5.7, 95%CI 1.35-9.64) and to have been sexually abused in adulthood (OR 6.1, 95%CI 5.2-12.36). Conclusion: Physical and sexual abuse in childhood are highly prevalent in substance-dependent adults, and are associated with sexual revictimization and high-risk sexual behavior in adulthood.

Telomere length and childhood trauma in Colombians with depressive symptoms

Objective: Childhood trauma and telomere length (TL) are important risk factors for major depressive disorder. We examined whether there was an association between childhood trauma and TL in a sample of Colombians who were assessed for depressive symptoms. Methods: We applied the Center for Epidemiologic Studies Depression scale, the Patient Health Questionnaire-9, the Hospital Anxiety and Depression scale and the Childhood Trauma Questionnaire to 92 Colombian subjects (mean age = 21). TL was measured with quantitative PCR. Spearman's correlation coefficient (rs) was used to analyze the relationship between childhood trauma scores and TL. Results: We found a significant correlation between TL and sexual abuse scores (rs = 0.428, p = 0.002) in individuals with higher depressive symptom scores. Conclusion: This is the first report of a significant association between TL and sexual abuse in a Latin American sample and provides additional evidence about the role of childhood trauma and TL in neuropsychiatric disorders.

The co-occurrence of adverse childhood experiences among children investigated for child maltreatment: A latent class analysis.

Children investigated for maltreatment are particularly vulnerable to experiencing multiple adversities. Few studies have examined the extent to which experiences of adversity and different types of maltreatment co-occur in this most vulnerable population of children. Understanding the complex nature of childhood adversity may inform the enhanced tailoring of practices to better meet the needs of maltreated children. Using cross-sectional data from the National Survey of Child and Adolescent Well-Being II (N=5870), this study employed latent class analysis to identify subgroups of children who had experienced multiple forms of maltreatment and associated adversities among four developmental stages: birth to 23 months (infants), 2-5 (preschool age), 6-10 (school age), and 11-18 years-old (adolescents). Three latent classes were identified for infants, preschool-aged children, and adolescents, and four latent classes were identified for school-aged children. Among infants, the groups were characterized by experiences of (1) physical neglect/emotional abuse/caregiver treated violently, (2) physical neglect/household dysfunction, and (3) caregiver divorce. For preschool-aged children, the groups included (1) physical neglect/emotional abuse/caregiver treated violently, (2) physical neglect/household dysfunction, and (3) emotional abuse. Children in the school-age group clustered based on experiencing (1) physical neglect/emotional neglect and abuse/caregiver treated violently, (2) physical neglect/household dysfunction, (3) emotional abuse, and (4) emotional abuse/caregiver divorce. Finally, adolescents were grouped based on (1) physical neglect/emotional abuse/household dysfunction, (2) physical abuse/emotional abuse/household dysfunction, and (3) emotional abuse/caregiver divorce. The results indicate distinct classes of adversity experienced among children investigated for child maltreatment, with both stability across developmental periods and unique age-related vulnerabilities. Implications for practice and future research are discussed.

Telomere length and childhood trauma in Colombians with depressive symptoms.

OBJECTIVE: Childhood trauma and telomere length (TL) are important risk factors for major depressive disorder. We examined whether there was an association between childhood trauma and TL in a sample of Colombians who were assessed for depressive symptoms. METHODS: We applied the Center for Epidemiologic Studies Depression scale, the Patient Health Questionnaire-9, the Hospital Anxiety and Depression scale and the Childhood Trauma Questionnaire to 92 Colombian subjects (mean age = 21). TL was measured with quantitative PCR. Spearman's correlation coefficient (rs) was used to analyze the relationship between childhood trauma scores and TL. RESULTS: We found a significant correlation between TL and sexual abuse scores (rs = 0.428, p = 0.002) in individuals with higher depressive symptom scores. CONCLUSION: This is the first report of a significant association between TL and sexual abuse in a Latin American sample and provides additional evidence about the role of childhood trauma and TL in neuropsychiatric disorders.

Identifying maltreatment subgroups with patterns of maltreatment subtype and chronicity: A latent class analysis approach.

Maltreatment experiences are complex, and it is difficult to characterize the heterogeneity in types of maltreatment. Subtypes, such as emotional maltreatment, sexual abuse, physical abuse, and neglect commonly co-occur and may persist across development. Therefore, treating individual maltreatment subtypes as independently occurring is not representative of the nature of maltreatment as it occurs in children's lives. Latent class analysis (LCA) is employed herein to identify subgroups of maltreated children based on commonalities in maltreatment subtype and chronicity. In a sample of 674 low-income urban children, 51.6% of whom experienced officially documented maltreatment, our analyses identified four classes of children, with three distinct classes based on maltreatment subtypes and chronicity, and one group of children who did not experience maltreatment. The largest class of maltreated children identified was the chronic, multi-subtype maltreatment class (57% of maltreated children); a second class was characterized by only neglect in a single developmental period (31% of maltreated children), and the smallest class was characterized by a single subtype of maltreatment (emotional maltreatment, physical, or sexual abuse) occurring in a single developmental period (12% of maltreated children). Characterization of these groups confirms the overlapping nature of maltreatment subtypes. There were notable differences between latent classes on child behavioral and socio-emotional outcomes measured by child self-report and camp counselors report during a one-week summer camp. The largest differences were between the non-maltreated class and the chronic maltreatment class. Children who experienced chronic, multi-subtype maltreatment showed higher levels of externalizing behavior, emotion dysregulation, depression, and anxiety.

Early childhood maltreatment experience and later sexual behavior in Brazilian adults undergoing treatment for substance dependence.

OBJECTIVE: To investigate the prevalence of early childhood maltreatment and associations with later sexual behavior among adult substance users. METHODS: A cross-sectional study enrolled 134 substance dependents who sought outpatient care in São Paulo, Brazil. Childhood trauma prevalence was assessed using the Childhood Trauma Questionnaire (CTQ). The Sexual Addiction Screening Test (SAST), drug of choice (DOC), and sexual behavior were also investigated. RESULTS: The sample was composed predominantly of single adult males (76.1%), with alcohol as the DOC (73.9%). Experiences of emotional neglect (88.1%), emotional abuse (80.6%), physical neglect (78.4%), physical abuse (64.2%), and sexual abuse (31.3%) were prevalent. Women were more likely to have been sexually abused (OR 2.9, 95%CI 1.15-7.61) and physically abused (OR 3.7, 95%CI 1.31-10.6) in childhood. Those who were sexually abused in adulthood were more likely to have suffered physical abuse in childhood (OR 6.9, 95%CI 1.45-11.8). The odds of having been sexually abused in childhood were higher among subjects who reported to have exchanged sexual favors for drugs (OR 5.7, 95%CI 1.35-9.64) and to have been sexually abused in adulthood (OR 6.1, 95%CI 5.2-12.36). CONCLUSION: Physical and sexual abuse in childhood are highly prevalent in substance-dependent adults, and are associated with sexual revictimization and high-risk sexual behavior in adulthood.

Childhood adversities are different in Schizophrenic Spectrum Disorders, Bipolar Disorder and Major Depressive Disorder.

BACKGROUND: Research has shown that a history of childhood adversities is common in patients with psychiatric disorders but few studies have investigated links between specific types of adversity and specific psychiatric disorders. METHODS: We investigated the frequency of early childhood adversities in a sample consisting of 91 patients with diagnosis of schizophrenic spectrum disorders (SSD), 74 patients with bipolar disorder (BD), 83 patients with major depressive disorder (MDD) and 85 healthy controls and sought to identify adverse early childhood life events that predict the development of major psychiatric disorders. The Childhood Experiences of Care and Abuse questionnaire was used to collect data on traumatic experiences occurring before the age of 17 years and comprehensive demographic data were also collected. The data were analyzed with chi-squared tests, t-tests, post-hoc and logistic regression. RESULTS: Maternal absence/loss and economic difficulties in the early life were more prevalent in the BD group than other groups. Escape from home, cannabis abuse, psychological abuse, physical abuse and loneliness were more frequent in the SSD group than in other groups. Paternal absence, neglect of core needs, serious familial tension and absence of adult and peer confidants were all less common in the HC group than in the other groups. The regression model confirmed that different types of adversities play a crucial role in the development of the three investigated disorders. CONCLUSIONS: Our results support that SSD, BD and MDD are associated to different childhood adversities. This suggests that psychosocial interventions that reduce the incidence of these early life adversities might reduce the incidence of severe and disabling psychiatric disorders.

Establishing the international prevalence of self-reported child maltreatment: a systematic review by maltreatment type and gender.

BACKGROUND: Estimating the prevalence of child maltreatment is challenging due to the absence of a clear 'gold standard' as to what constitutes maltreatment. This systematic review aims to review studies using self-report maltreatment to capture prevalence rates worldwide. METHODS: PubMed, Ovid SP and grey literature from the NSPCC, UNICEF, The UK Government, and WHO from 2000 to 2017 were searched. The literature review focused on the variation found in self-reported lifetime prevalence for each type of maltreatment between studies by continent and gender, and how methodological differences may explain differences found. RESULTS: Sexual abuse is the most commonly studied form of maltreatment across the world with median (25th to 75th centile) prevalence of 20.4% (13.2% to 33.6%) and 28.8% (17.0% to 40.2%) in North American and Australian girls respectively, with lower rates generally for boys. Rates of physical abuse were more similar across genders apart from in Europe, which were 12.0% (6.9% to 23.0%) and 27.0% (7.0% to 43.0%) for girls and boys respectively, and often very high in some continents, for example, 50.8% (36.0% to 73.8%) and 60.2% (43.0% to 84.9%) for girls and boys respectively in Africa. Median rates of emotional abuse were nearly double for girls than boys in North America (28.4% vs 13.8% respectively) and Europe (12.9% vs 6.2% respectively) but more similar across genders groups elsewhere. Median rates of neglect were highest in Africa (girls: 41.8%, boys: 39.1%) and South America (girls: 54.8%, boys: 56.7%) but were based on few studies in total, whereas in the two continents with the highest number of studies, median rates differed between girls (40.5%) and boys (16.6%) in North America but were similar in Asia (girls: 26.3%, boys: 23.8%). CONCLUSIONS: Median prevalence rates differ substantially by maltreatment category, gender and by continent. The number of studies and available data also varies and relatively little is known about prevalence for some forms of maltreatment, particularly outside of the North American context. Prevalence rates require caution in interpretation as some variation will reflect methodological differences, including the data collection methods, and how the maltreatment is defined.

Type and timing of childhood maltreatment and reduced visual cortex volume in children and adolescents with reactive attachment disorder.

Reactive attachment disorder (RAD) is a severe social functioning disorder associated with early childhood maltreatment where the child displays emotionally withdrawn/inhibited behaviors toward caregivers. Brain regions develop at different rates and regions undergoing rapid change may be particularly vulnerable during these times to stressors or adverse experiences. The aim of this study was to investigate the effect of type and timing of childhood adversities on structural alterations in regional gray matter (GM) volume in maltreated children with RAD. High-resolution magnetic resonance imaging datasets were obtained for children and adolescents with RAD (n = 21; mean age = 12.76 years) and typically developing (TD) control subjects (n = 22; mean age = 12.95 years). Structural images were analyzed using a whole-brain voxel-based morphometry approach and the type and timing of maltreatment, which may be more strongly associated with structural alterations, was assessed using random forest regression with conditional inference trees. Our findings revealed that there is a potential sensitive period between 5 and 7 years of age for GM volume reduction of the left primary visual cortex (BA17) due to maltreatment. We also found that the number of types of maltreatment had the most significant effect on GM volume reduction and that the second most significant variable was exposure to neglect. The present study provides the first evidence showing that type and timing of maltreatment have an important role in inducing structural abnormalities in children and adolescents with RAD.

The impact of child maltreatment on non-suicidal self-injury: data from a representative sample of the general population.

BACKGROUND: Child maltreatment is an identified risk factor for Non-Suicidal Self-Injury (NSSI). The aim of the current study was to investigate effects of different types of maltreatment, and mediating effects of depression and anxiety on NSSI in the general population. METHODS: A representative sample of the German population, comprising N = 2498 participants (mean age = 48.4 years (SD = 18.2), 53.3% female) participated in this study. Child maltreatment was assessed using the Childhood Trauma Questionnaire (CTQ),NSSI was assessed with a question on lifetime engagement in NSSI, depressive symptoms were assessed by the Patient Health Questionnaire (PHQ-2) and anxiety symptoms by the General Anxiety Disorder questionnaire (GAD-2). RESULTS: Lifetime prevalence of NSSI in this sample was 3.3, and 30.8% reported at least one type of child maltreatment. Participants in the NSSI group reported significantly more experiences of child maltreatment. Emotional abuse was endorsed by 72% of all participants with NSSI. A path analytic model demonstrated an unmediated direct effect of emotional neglect, a partially mediated effect of emotional abuse, and a fully mediated effect of sexual abuse and physical neglect by depression and anxiety on NSSI. CONCLUSIONS: Especially emotional neglect and abuse seem to play a role in the etiology of NSSI above and beyond depression and anxiety, while sexual and physical abuse seem to have a rather indirect effect.