Low Vagal Tone Magnifies the Association Between Psychosocial Stress Exposure and Internalizing Psychopathology in Adolescents

Vagal tone is a measure of cardiovascular function that facilitates adaptive responses to environmental challenge. Low vagal tone is associated with poor emotional and attentional regulation in children and has been conceptualized as a marker of sensitivity to stress. We investigated whether the associations of a wide range of psychosocial stressors with internalizing and externalizing psychopathology were magnified in adolescents with low vagal tone. Resting heart period data were collected from a diverse community sample of adolescents (ages 13–17; N = 168). Adolescents completed measures assessing internalizing and externalizing psychopathology and exposure to stressors occurring in family, peer, and community contexts. Respiratory sinus arrhythmia (RSA) was calculated from the interbeat interval time series. We estimated interactions between RSA and stress exposure in predicting internalizing and externalizing symptoms and evaluated whether interactions differed by gender. Exposure to psychosocial stressors was associated strongly with psychopathology. RSA was unrelated to internalizing or externalizing problems. Significant interactions were observed between RSA and child abuse, community violence, peer victimization, and traumatic events in predicting internalizing but not externalizing symptoms. Stressors were positively associated with internalizing symptoms in adolescents with low RSA but not in those with high RSA. Similar patterns were observed for anxiety and depression. These interactions were more consistently observed for male than female individuals. Low vagal tone is associated with internalizing psychopathology in adolescents exposed to high levels of stressors. Measurement of vagal tone in clinical settings might provide useful information about sensitivity to stress in child and adolescent clients.     

Protective Factors for Youth Exposed to Violence in Their Communities: A Review of Family,School, and Community Moderators

This review provides a comprehensive investigation of the pattern and strength of findings in the literature regarding the environmental moderators of the relationship between exposure to community violence and mental health among children and adolescents. Twenty-nine studies met criteria for inclusion in our analysis of family, school, and community variables as moderators. Dependent variables included internalizing (e.g., anxiety, depression, posttraumatic stress disorder) and externalizing symptoms (e.g., aggression, substance use). Effect sizes for the interactions of exposure to violence and potential moderators were summarized by their patterns of protective processes. The majority of studies in the literature examined family characteristics as moderators of the exposure to violence–symptom relationship, rather than school- or community-level factors. Our results indicated more consistent patterns for (a) close family relationships and social support for internalizing symptoms and (b) close family relationships for externalizing symptoms. Overall, the most common type of protective pattern was protective-stabilizing, in which youth with higher levels of the environmental attribute demonstrate relative stability in mental health despite exposure to violence. We found no consistent evidence that parental monitoring—a dimension inversely associated with exposure to violence in prior studies—moderated the relationship between exposure to violence and symptoms. The study emphasizes the importance of strengthening family support for young people's exposure to community violence; more research is needed to provide a solid evidence base for the role of school and community-level protective factors for youth exposed to violence.     

Posttraumatic Stress,Family Functioning,and Externalizing in Adolescents Exposed to Violence: A Moderated Mediation Model

Exposure to community violence disproportionately impacts low-income, minority youth and is associated with posttraumatic stress symptoms and maladaptive adjustment. This study investigates whether posttraumatic stress mediates the relation between exposure to community violence and externalizing symptoms and the moderating role of family cohesion and daily family support in buffering these effects on later externalizing. Low-income, African American 7th-grade students (M age = 12.57 years; N = 254) from high-crime neighborhoods participated in a 2-year longitudinal study measuring the effects of community violence exposure. The students completed questionnaires administered by research staff over 5 consecutive days for each year of the study. Family cohesion and daily family support exhibited a significant buffering effect for several outcomes. Posttraumatic stress significantly mediated the effect of witnessing community violence on subsequent aggression. The strength of these indirect effects depended on level of family cohesion. The findings provide evidence in support of interventions provided at both individual and family levels. Mental health providers working with this population should be aware of the intertwined nature of exposure to community violence, posttraumatic stress, and subsequent maladaptive outcomes.     

Community violence and externalizing problems: moderating effects of race and religiosity in emerging adulthood

The present study examined racial differences in the relationship between exposure to community violence and public and private religiosity in predicting externalizing problems among at‐risk emerging adults. Participants were 178 African American and 163 European American emerging adults at risk for exposure to community violence. Exposure to community violence related to more externalizing problems. Greater public religious affiliation buffered the relationship between community violence and substance abuse, for both African American and European emerging adults. In addition, more privately religious African American emerging adults engaged in less deviant behavior when exposed to higher levels of community violence. European Americans were not protected by private religiosity. © 2008 Wiley Periodicals, Inc.     

Community violence and posttraumatic stress disorder symptoms in urban youth: The moderating influence of friend and parent support

Separate lines of research have demonstrated that community violence predicts posttraumatic stress disorder (PTSD) symptoms in youth and that social support is one protective factor against the development of PTSD symptoms. The current study sought to examine the associations between primary and secondary exposure to community violence and the moderating role of parent and friend support on these relations. Participants were 96 urban youths (aged 6–17 years; 58.4% racial/ethnic minority; 51% female) and a caregiver recruited from a university mental health clinic. Results indicated that both primary and secondary exposure to community violence predicted PTSD symptoms. Friend support, but not parent support, moderated the association between primary, but not secondary, exposure to community violence and PTSD symptoms. The findings suggest that friend support is a salient protective factor for urban youth who may be at risk of PTSD symptoms due to exposure to community violence.     

A longitudinal study of household change on African American adolescents

Few studies have examined the effects of household change on adolescent development. We study household composition change and its effect on development, as measured by both internalizing symptoms and externalizing behaviors, in a sample of urban African American adolescents. Household change was defined based on the movement in or out of the household of one of the 2 most important adults adolescents named. We found 25% of adolescents reported changes in their household composition over the 4 years of high school. Youth who experienced change reported more internalizing symptoms and externalizing behavior than youth who did not experience change. Those reporting important people leaving their household had the greatest negative outcomes. © 2011 Wiley Periodicals, Inc.     

SCHOOL AND COMMUNITY INFLUENCES ON THE LONG TERM POSTDISASTER RECOVERY OF CHILDREN AND YOUTH FOLLOWING HURRICANE GEORGES

Disasters affect the school and community microsystems in which children and youth recover. This study explored characteristics of the school (school violence, teachers’ attitudes) and community microsystem (neighborhood climate, neighborhood monitoring, community violence) that may affect the disaster exposure and internalizing psychopathology relationship in children and youth aged 12–27 months after Hurricane Georges hit Puerto Rico. A representative sample (N = 1,637) of caregivers and children/youth completed structured interviews in Spanish. Controlling for gender and perception of poverty, for children (aged 6–10 years), hurricane exposure increased risk for internalizing psychopathology, but the school and community variables did not have an influence. For all youth (aged 11–17 years), witnessing community violence and poor teacher attitudes increased the risk of psychopathology. In addition, neighborhood climate and school violence were moderators. For nonexposed youth, poor neighborhood climate and perceiving greater school violence increased the risk of internalizing psychopathology, whereas for exposed youth it did not.     

The impact of child maltreatment and psychopathology on neuroendocrine functioning.

Cortisol regulation was investigated in a sample of school-aged maltreated (n = 167) and demographically comparable low-income nonmaltreated (n = 204) boys and girls in the context of a day camp research program. The presence of clinical-level internalizing and clinical-level externalizing symptomatology was determined through adult report and child self report. Children who exhibited clinical-level internalizing problems only, clinical-level externalizing problems only, and comorbid clinical-level internalizing and extemalizing problems were identified. Clinical-level cases were more prevalent among the maltreated children. Maltreated children with clinical-level internalizing problems were distinguished by higher morning, afternoon, and average daily cortisol levels across the week of camp attendance. In contrast, nonmaltreated boys with clinical-level externalizing problems emerged as distinct in terms of low levels of morning and average daily levels of cortisol. Maltreated children with comorbid clinical-level internalizing and externalizing problems were more likely not to show the expected diumal decrease in cortisol. The findings are discussed in terms of the joint impact of maltreatment and different forms of psychopathology on neuroendocrine regulation.     

Gender differences in adherence and metabolic control in urban youth with poorly controlled type 1 diabetes: the mediating role of mental health symptoms

OBJECTIVE: To examine gender differences in adherence and metabolic control and test the mediating role of mental health symptoms in a sample of predominantly African-American, low-income youth with chronically poor metabolic control. METHODS: Baseline questionnaire data from an intervention study were collected from 119 youth and their primary caregiver. RESULTS: Boys had worse adherence than girls, but there were no gender differences in hemoglobin A1C (HbA1C). Boys had more externalizing symptoms, whereas girls had more anxiety; there were no gender differences in depression. Externalizing symptoms were associated with poor adherence and metabolic control. Although anxiety was correlated with poor adherence, this relationship was not significant in the invariate analysis. Results of structural equation modeling (SEM) suggested that externalizing symptoms mediated the relationship between gender and adherence. CONCLUSIONS: Results suggest that gender differences in adherence may be attributed, in part, to gender differences in externalizing symptoms in urban youth with poor metabolic control. Interventions targeting these symptoms may be necessary to improve adherence and HbA1C in both boys and girls.     

Discrepancies between community violence exposure and perceived neighborhood violence

Community violence exposure (CVE) has been identified as a significant public health concern given its association with numerous mental health problems. Perceptions of neighborhood violence (PNV) also may adversely affect youth adjustment. In recognition that PNV may differ from individuals own experience of CVE, the current study utilized latent class analysis to examine the degree and consequences of consistency and discrepancy in adolescents community violence exposure and PNV. Participants included an epidemiologically‐defined community sample of 456 African American adolescents (52% male; mean age=11.77). Results revealed three groups of youth: high CVE/high PNV, low CVE/low PNV, and low CVE/high PNV. Longitudinal analyses suggest that a discrepancy between CVE and PNV is important for understanding depressive and anxious symptoms among urban African American youth. Implications for intervention are discussed. © 2010 Wiley Periodicals, Inc.     

The Role of Child and Adolescent Adjustment Problems and Sleep Disturbance in Parent Psychological Distress

The goal of this study was to examine the moderating role of youth sleep disturbance on the relationship between youth internalizing and externalizing symptoms and parent psychological distress. Participants were 225 youth (ages 8–17) and parent dyads attending a primary care clinic appointment. Participants completed questionnaires that assessed parent psychological distress, youth internalizing symptoms, youth externalizing symptoms, and youth sleep disturbance. Moderation analyses were conducted to examine whether youth sleep disturbance moderated the relationship between youth internalizing and externalizing symptoms and parent psychological distress. The interaction between youth internalizing symptoms and youth sleep disturbance was significantly related to parent psychological distress, such that having increased sleep disturbance amplified the positive relationship between internalizing symptoms and parent psychological distress. The moderation model explained 52% of the variance in parent psychological distress. The interaction between youth externalizing symptoms and youth sleep disturbance was also significantly related to parent psychological distress, such that increased sleep disturbance amplified the positive relationship between externalizing symptoms and parent psychological distress. This model accounted for 53% of the variance in parent psychological distress. Greater youth sleep disturbance strengthens the positive relationship between youth internalizing/externalizing symptoms and parent psychological distress. Accordingly, reducing youth sleep disturbance may serve as an appropriate intervention target in families experiencing increased parent psychological distress.     

Community violence exposure and aggression among urban adolescents: testing a cognitive mediator model

Past research has shown that exposure to violence leads to aggressive behavior, but few community‐based studies have examined theoretical models illustrating the mediating social cognitive processes that explain this relation with youth exposed to high rates of violence. This study examines the impact of community violence on behavior through cognitive mediators: normative beliefs about aggression and self‐efficacy to control aggression. Self‐report surveys were completed by two samples (cross‐sectional and longitudinal) of early adolescent, urban African American youth. Structural equation modeling was used to evaluate a theoretical model, and results demonstrated a good fit with both samples; that is more exposure to community violence was associated with more retaliatory beliefs supporting aggression, which led to less self‐efficacy to control aggression, which led to more aggressive behavior. These findings are examined in the context of community factors, and implications for prevention and intervention are discussed. © 2009 Wiley Periodicals, Inc.     

Urban adolescents' exposure to community violence: the role of support, school safety, and social constraints in a school-based sample of boys and girls.

This study examined recent exposure to violence in the community and in other settings, protective factors, and current psychological functioning among 349 young adolescents from 9 urban middle schools. The majority (76%) of adolescents reported witnessing or being victimized by at least 1 violent event in the prior 6 months. Nearly half of adolescents who had talked about their experience of a violent event reported feeling constrained from sharing their thoughts or feelings because of others' reactions. After controlling for daily hassles, more exposure to violence was associated with more self-reported posttraumatic stress disorder (PTSD) and depressive symptoms. Exposure to violence was not a significant predictor of teachers' ratings of adaptive functioning or internalizing symptoms. Support from specific individuals, perceived school safety, and lower constraints for discussing violence showed protective effects in the relation between exposure to violence and specific dimensions of psychological functioning. The implications of this research for school-based interventions are discussed.     

Urban Adolescents' Exposure to Community Violence: The Role of Support,School Safety,and Social Constraints in a School-Based Sample of Boys and Girls

This study examined recent exposure to violence in the community and in other settings, protective factors, and current psychological functioning among 349 young adolescents from 9 urban middle schools. The majority (76%) of adolescents reported witnessing or being victimized by at least 1 violent event in the prior 6 months. Nearly half of adolescents who had talked about their experience of a violent event reported feeling constrained from sharing their thoughts or feelings because of others' reactions. After controlling for daily hassles, more exposure to violence was associated with more self-reported posttraumatic stress disorder (PTSD) and depressive symptoms. Exposure to violence was not a significant predictor of teachers' ratings of adaptive functioning or internalizing symptoms. Support from specific individuals, perceived school safety, and lower constraints for discussing violence showed protective effects in the relation between exposure to violence and specific dimensions of psychological functioning. The implications of this research for school-based interventions are discussed.     

Exposure to Community Violence and Violence Perpetration: The Protective Effects of Family Functioning

Although research has found that urban youth are exposed to excessive levels of community violence, few studies have focused on the factors that alter the risk of exposure to violence or the processes through which youth who are exposed to community violence do better or worse. This study investigates the risk of exposure to community violence and its relation to violence perpetration among a sample of 263 African American and Latino male youth living in inner-city neighborhoods. The study also examines the role that family functioning plays in moderating the risk. The study finds that youth from struggling families—those that consistently used poor parenting practices and had low levels of emotional cohesion—were more likely to be exposed to community violence. It also finds a relation between exposure to violence and later violence perpetration. However, youth exposed to high levels of community violence but living in families that functioned well across multiple dimensions of parenting and family relationship characteristics perpetrated less violence than similarly exposed youth from less well-functioning families.     

Exposure to community violence and violence perpetration: the protective effects of family functioning.

Although research has found that urban youth are exposed to excessive levels of community violence, few studies have focused on the factors that alter the risk of exposure to violence or the processes through which youth who are exposed to community violence do better or worse. This study investigates the risk of exposure to community violence and its relation to violence perpetration among a sample of 263 African American and Latino male youth living in inner-city neighborhoods. The study also examines the role that family functioning plays in moderating the risk. The study finds that youth from struggling families--those that consistently used poor parenting practices and had low levels of emotional cohesion--were more likely to be exposed to community violence. It also finds a relation between exposure to violence and later violence perpetration. However, youth exposed to high levels of community violence but living in families that functioned well across multiple dimensions of parenting and family relationship characteristics perpetrated less violence than similarly exposed youth from less well-functioning families.     

The interactive effects of infant activity level and fear on growth trajectories of early childhood behavior problems

The current study examined the interactive effects of infant activity level and fear on growth trajectories of behavior problems in early childhood (age 4 to 8 years) using maternal ratings. The sample was drawn from the National Longitudinal Survey of Youth (NLSY) and included children who were between 1 and 11 months in 1986. Findings suggested that boys characterized by high activity level and low levels of fear in infancy escalated in both externalizing and internalizing symptoms. Also, boys characterized by high fear and low activity level increased in internalizing symptoms and these effects seemed to be specific to depression rather than anxiety. Temperament did not predict escalation in externalizing symptomatology for girls, but low levels of fear predicted increases in internalizing symptoms. There was also evidence for a decline in depression specific symptoms for girls characterized by high fear and low activity in infancy. These findings suggest the importance of examining interactive models of temperament risk and considering gender specific pathways to behavior problems.     

SELF‐CONTROL AND ADOLESCENT INTERNALIZING AND EXTERNALIZING PROBLEMS: NEIGHBORHOOD‐BASED DIFFERENCES

Self‐control may act as a protective factor against the development of internalizing and externalizing problems among adolescents. However, little research has examined how self‐control functions within and across different types of communities. Using two cohorts from the Project on Human Development in Chicago Neighborhoods (N = 1,072; 51.40% female), we examined how self‐control and neighborhood characteristics were independently and jointly associated with these behaviors. Using latent profile analysis, we categorized neighborhoods based on several characteristics known to be associated with youth outcomes, including violence, concentrated disadvantage, and collective efficacy. Then we examined how self‐control was associated with youth internalizing and externalizing problems within and across neighborhoods. Results suggest that self‐control was a protective feature in only some types of disadvantaged and dangerous neighborhoods. We discuss findings in terms of implications for programs and policies to support youth mental health.     

Codevelopment of externalizing and internalizing problems in early childhood

Using cross-domain latent growth modeling, we examined trajectories of externalizing and internalizing problems in disadvantaged boys followed from ages 2 to 6 years (N = 303). On average, externalizing problems gradually decreased and internalizing problems gradually increased. However, we found significant variability in individual-level trajectories. Higher levels of externalizing problems were associated with higher levels of internalizing problems; rates of change were also positively correlated across domains. In addition, high levels of externalizing problems predicted rapid increases in internalizing problems. In follow-up analyses involving child and parenting factors, the combination of high negative emotionality, low fearfulness, and high negative maternal control preceded high, nondecreasing externalizing trajectories. The combination of high negative emotionality, high fearfulness, and high negative maternal control preceded high, increasing internalizing trajectories. Taken together, the results indicate both general and specific processes in the development of early externalizing and internalizing problems.     

Parenting as a Moderator of the Effects of Maternal Depressive Symptoms on Preadolescent Adjustment

The purpose of this study was to examine whether parenting moderated the association between maternal depressive symptoms and initial levels and growth of preadolescent internalizing and externalizing symptoms. This study used a community sample of preadolescent children (N = 214; 8–12 years old at Time 1), measuring maternal depressive symptoms and parenting at Time 1, and preadolescent internalizing and externalizing symptoms at each year for 3 years. After modeling latent growth curves of internalizing and externalizing symptoms, growth factors were conditioned on maternal depressive symptoms, positive (acceptance and consistent discipline) and negative (rejection and physical punishment) parenting, and the interactions of depression and parenting. Maternal rejection moderated the relation of maternal depression with internalizing symptoms, such that high rejection exacerbated the effects of maternal depressive symptoms on initial levels of preadolescent internalizing problems. There were no significant interactions predicting externalizing problems. The findings highlight how specific parenting behaviors may alter the way in which maternal depressive symptoms confer risk for behavior problems.