Susan Yoon

Developmental pathways from child maltreatment to adolescent substance use: The roles of posttraumatic stress symptoms and mother-child relationships☆

While many studies have identified a significant relation between child maltreatment and adolescent substance use, the developmental pathways linking this relation remain sparsely explored. The current study examines posttraumatic stress (PTS) symptoms, mother-child relationships, and internalizing and externalizing problems as potential longitudinal pathways through which child maltreatment influences adolescent substance use. Structural equation modeling was conducted on 883 adolescents drawn from the Longitudinal Studies of Child Abuse and Neglect (LONGSCAN). The pathways of PTS symptoms linked physical and sexual abuse to substance use, and the pathways of mother-child relationships linked emotional abuse and neglect to substance use. None of the four types of maltreatment affected substance use via internalizing or externalizing problems. The findings suggest that intervention efforts aimed at addressing posttraumatic stress symptoms and improving mother-child relationship quality may be beneficial in reducing substance use among adolescents with child maltreatment histories.

Promoting the development of resilient academic functioning in maltreated children

This study examined (a) the extent of heterogeneity in the patterns of developmental trajectories of language development and academic functioning in children who have experienced maltreatment, (b) how maltreatment type (i.e., neglect or physical abuse) and timing of abuse explained variation in developmental trajectories, and (c) the extent to which individual protective factors (i.e., preschool attendance, prosocial skills), relationship protective factors (i.e., parental warmth, absence of past-year depressive episode, cognitive/verbal responsiveness) and community protective factors (i.e., neighborhood safety) promoted the development of resilient language/academic functioning trajectories. Longitudinal data analyses were conducted using cohort sequential Growth Mixture Model (CS-GMM) with a United States national representative sample of children reported to Child Protective Services (n=1,776). Five distinct developmental trajectories from birth to age 10 were identified including two resilient groups. Children who were neglected during infancy/toddlerhood or physically abused during preschool age were more likely to be in the poorer language/academic functioning groups (decreasing/recovery/decreasing and high decreasing) than the resilient high stable group. Child prosocial skills, caregiver warmth, and caregiver cognitive stimulation significantly predicted membership in the two resilient academic functioning groups (low increasing and high stable), after controlling for demographics and child physical abuse and neglect. Results suggest that it is possible for a maltreated child to successfully achieve competent academic functioning, despite the early adversity, and identifies three possible avenues of intervention points. This study also makes a significant contribution to the field of child development research through the novel use of CS-GMM, which has implications for future longitudinal data collection methodology.

Maternal depression and intimate partner violence exposure: Longitudinal analyses of the development of aggressive behavior in an at-risk sample

A substantial body of literature has documented the negative effects of intimate partner violence (IPV) on a wide range of childrens developmental outcomes. However, whether a childs exposure to IPV leads to increased adjustment difficulties is likely to depend on a variety of factors, including the caregivers mental health and the developmental time period when IPV exposure occurs. The present study seeks to improve our understanding of the long-term effects of IPV exposure and maternal depression on the development of childrens overt aggressive behavior. Longitudinal analyses (i.e., latent growth curve modeling) examining three time points (toddler: age 2-3 years, preschool/kindergarten: age 4-5 years, and elementary school: age 6-8 years) were conducted using 1,399 at-risk children drawn from the National Survey of Child and Adolescent Well-Being (NSCAW-I). IPV exposure during age 2-3 years was significantly related to concurrent aggressive behavior and aggressive behavior during age 4-5 years. At all three time points, IPV was significantly associated with maternal depression, which in turn, was significantly related to higher levels of aggressive behavior. There was also a significant indirect lagged effect of IPV exposure at age 2-3 years through maternal depression on aggressive behavior at age 4-5 years. Results indicated that maternal depression was a strong predictor of increased reports of overt aggressive behavior, suggesting that interventions to buffer the effects of IPV exposure should focus on relieving maternal depression and fostering productive social behavior in children. Aggr. Behav. 43:375-385, 2017.

Gender-Moderated Pathways From Childhood Abuse and Neglect to Late-Adolescent Substance Use: Gender-Moderated Pathways to Substance Use

Substantial research has linked childhood maltreatment to the development of substance use in adolescence. However, gender differences in the mechanisms that connect child abuse and neglect to substance use remain unclear. In this study, we applied multiple-group structural equation modeling in a sample of 1,161 youths (boys, n = 552; girls, n = 609) from the Longitudinal Studies of Child Abuse and Neglect (LONGSCAN) to examine gender differences in the associations between childhood abuse and neglect exposure from ages 0-12 years and substance use severity at age 18 as mediated by early substance use at age 14 and psychological symptoms (anger, anxiety, and depression) at age 16. In both genders, neglect directly predicted substance use severity, β = .25, p < .001 for boys and β = .17, p = .007 for girls; and early substance use, β = .03, p = .002 for boys and β = .06, p = .005 for girls; and anger mediated this association, β = .10, p < .001 for boys and β = .06, p = .005 for girls. Anger mediated paths from abuse in boys, β = .06, p = .018. In girls, early substance use mediated the path from abuse to substance use severity, β = .06, p = .008, with the mediated effect and direct path from abuse to early substance use significantly moderated by gender. For substance use severity, R2 = .26 for girls and R2 = .27 for boys. These findings demonstrate the prominence of neglect in predicting substance use severity and gender differences in paths from abuse.

Gender differences in pathways from child physical and sexual abuse to adolescent risky sexual behavior among high-risk youth

This study investigated gender differences in the roles of internalizing and externalizing symptoms and substance use as pathways linking child physical and sexual abuse to risky sexual behavior among youth at risk of maltreatment. Path analysis was performed with 862 adolescents drawn from Longitudinal Studies of Child Abuse and Neglect. Four waves of data collected in the United States were used: childhood physical and sexual abuse experiences (from ages 0-12) were assessed by Child Protective Services reports, internalizing and externalizing symptoms were measured at age 14, substance use was measured at age 16, and risky sexual behavior was measured at age 18. Physical abuse was directly associated with risky sexual behavior in boys but not girls. For girls, physical abuse had a significant indirect effect on risky sexual behavior via externalizing symptoms. Gender-focused preventive intervention strategies may be effective in reducing risky sexual behavior among at-risk adolescents.

The effects of recurrent physical abuse on the co-development of behavior problems and posttraumatic stress symptoms among child welfare-involved youth

The primary aim of the current study was to examine the longitudinal effects of ongoing physical abuse on the co-development of externalizing behavior problems and posttraumatic stress (PTS) symptoms among child welfare-involved adolescents. Using three waves of data from the National Survey of Child and Adolescent Well-Being, we performed unconditional and conditional parallel process latent growth curve modeling in a structural equation modeling framework. The study sample included 491 adolescents who were between 11 and 13 years of age at baseline. Higher levels of initial PTS symptoms were associated with higher levels of externalizing behavior problems, but the rate of change in PTS symptoms were not significantly associated with the rate of change in externalizing behavior problems over time. Although physical abuse was concurrently associated with both externalizing behavior problems and PTS symptoms at all assessment points, there were no lagged effects. Additionally, we found that physical abuse indirectly affects subsequent development of externalizing behavior problems and PTS symptoms through ongoing physical abuse. Findings highlight the comorbidity of externalizing behaviors and PTS symptoms among early adolescents in the child welfare system, underlining the importance of screening for and addressing these problems simultaneously. Findings also point to the need for continued assessment of and protection from ongoing physical abuse during adolescence.

Vulnerability or resilience to early substance use among adolescents at risk: The roles of maltreatment and father involvement

Although research has indicated that maltreated children are at higher risk of adolescent substance use, it remains unclear whether the type and timing of maltreatment affect the likelihood of adolescent substance use. Research has also found father involvement to be a potential protective factor against adolescent substance use, but the role of quality vs. quantity of father involvement as well as gender differences in the effects of father involvement on substance use among at-risk adolescents have not been studied. The current study adds value to the existing literature by filling these gaps in knowledge. We conducted a secondary data analysis with a sample of 685 at-risk adolescents drawn from the Longitudinal Studies of Child Abuse and Neglect. The study found a connection between early childhood (birth to 5) physical abuse and adolescent substance use, but not for later childhood physical abuse or other forms of child maltreatment. The quality of father involvement was found to be a protective factor, regardless of child gender; quantity of father involvement was not significant. Based on these findings, development of intervention strategies focusing on prevention of early childhood physical abuse and promoting positive father-child relationships are important prevention strategies for adolescent substance use. Additionally, professionals working with at-risk adolescents need to be cognizant of the implications of early childhood physical abuse and act accordingly to mitigate the increased potential for adolescent substance use.