Threat Effects on Attention Networks in Individuals with a History of Externalizing Behaviors

Research identifying the biobehavioral processes that link threat exposure to cognitive alterations can inform treatments designed to reduce perpetration of stress-induced aggression. The present study attempted to specify the effects of relatively predictable (acute) vs unpredictable (diffuse) threat on two theoretically relevant attention networks, attentional alerting and executive control; and to examine the extent to which aggression proneness moderated those effects. In a sample with high rates of externalizing behaviors (n = 74), we measured event-related brain activity during an attention network test that manipulated cognitive systems activation under distinct contexts of threat (NPU manipulation). The first set of results confirmed that threat exposure alters alerting and executive control. The predictable threat condition, relative to unpredictable threat, increased visual alerting (alert cue N1) and decreased attention (P3) to subsequent task-relevant stimuli (flanker). In contrast, overall threat and unpredictable threat conditions were associated with alerting-related quicker responding and poorer conflict resolution (congruence-related flanker N2 reductions and RT interference). The second set of results indicated that different operationalizations of aggression proneness were inconsistently related to threat-related alterations in cognitive systems. While these results regarding threat-related cognitive alterations in aggression require more study, they nevertheless expand what is known about threat-related modulation of cognition in a sample of individuals with histories of externalizing behaviors.

Linking maternal involvement in child online learning to child adjustment during the COVID-19 pandemic: The moderating role of maternal mindfulness

In the face of COVID-19, many schools have to educate their students using online activities. During this time, whether and how parents are involved may be of particular importance for young children—who are less able to learn independently via the Internet due to their developmental immaturity. Therefore, this study examined the cross-sectional association of maternal involvement in child online learning with child adjustment during the COVID-19 pandemic and tested maternal mindfulness as a moderator. Data were collected from 236 mothers of kindergarten-aged children (mean age = 55.91 months; 75% of them were girls) during the fourth wave of COVID-19 outbreak in Hong Kong, China. Using paper-and-pencil questionnaires, mothers rated their involvement and mindfulness and their children’s pre-academic ability and internalizing and externalizing behaviors and provide demographic information. Regression models revealed that maternal involvement was associated positively with child pre-academic ability and negatively with child internalizing behaviors, but such associations were only significant for children with more mindful mothers. Maternal mindfulness did not moderate the negative association between maternal involvement and child externalizing behaviors. Findings highlighted the role of maternal mindfulness in child development, suggesting that it may be crucial to promote maternal involvement and mindfulness during the pandemic and perhaps beyond.

Psychosocial Intervention for Youth With High Externalizing Behaviors and Aggression Is Associated With Improvement in Impulsivity and Brain Gray Matter Volume Changes

Background: Stop, Now And Plan (SNAP) is a cognitive behavioral-based psychosocial intervention that has a strong evidence base for treating youth with high aggression and externalizing behaviors, many of whom have disruptive behavior disorders. In a pre-post design, we tested whether SNAP could improve externalizing behaviors, assessed by the parent-rated Child Behavior Checklist (CBCL) and also improve behavioral measures of impulsivity in children with high aggression and impulsivity. We then investigated whether any improvement in externalizing behavior or impulsivity was associated with gray matter volume (GMV) changes assessed using structural magnetic resonance imaging (sMRI). We also recruited typically developing youth who were assessed twice without undergoing the SNAP intervention.Methods: Ten children who were participating in SNAP treatment completed the entire study protocol. CBCL measures, behavioral measures of impulsivity, and sMRI scanning was conducted pre-SNAP and then 13 weeks later post-SNAP. Twelve healthy controls also completed the study; they were rated on the CBCL, performed the same behavioral measure of impulsivity, and underwent sMRI twice, separated by 13 weeks. They did not receive the SNAP intervention.Result: At baseline, SNAP participants had higher CBCL scores and performed worse on the impulsivity task compared with the healthy controls. At the second visit, SNAP participants still had higher scores on the CBCL compared with normally-developing controls, but their performance on the impulsivity task had improved to the point where their results were indistinguishable from the healthy controls. Structural magnetic resonance imaging in the SNAP participants further revealed that improvements in impulsivity were associated with GMV changes in the frontotemporal region.Conclusion: These results suggest that SNAP led to improvement in behavioral measures of impulsivity in a cohort of boys with high externalizing behavior. Improvement in impulsivity was also associated with increased GMV changes. The mechanism behind these brain changes is unknown but could relate to cognitive behavioral therapy and contingency management interventions, important components of SNAP, that target frontotemporal brain regions. Clinically, this study offers new evidence for the potential targeting of brain regions by non-invasive modalities, such as repetitive transcranial magnetic stimulation, to improve externalizing behavior and impulsivity.

A Review of Associations between Externalizing Behaviors and Prenatal Cannabis Exposure: Limitations & Future Directions

In utero cannabis exposure can disrupt fetal development and increase risk for various behavioral disruptions, including hyperactivity, inattention, delinquent behaviors, and later substance abuse, among others. This review summarizes the findings from contemporary investigations linking prenatal cannabis exposure to the development of psychopathology and identifies the limitations within the literature, which constrain our interpretations and generalizability. These limitations include a lack of genetic/familial control for confounding and limited data examining real world products, the full range of cannabinoids, and motives for use specifically in pregnant women. Taken together, our review reveals the need to continue to improve upon study designs in order to allow researchers to accurately draw conclusions about the development of behavioral consequences of prenatal cannabis exposure. Findings from such studies would inform policy and practices regarding cannabis use during pregnancy and move the field toward developing a comprehensive teratogenic profile of cannabis similar to what is characterized in the prenatal alcohol and tobacco literature.

The Relation between Maternal Personality and Internalizing/Externalizing Behaviors: Mediating Role of Maternal Alexithymia, Children’s Alexithymia and Emotional Regulation

Objective: Although many studies have investigated the effect of maternal personality on internalizing and externalizing behaviors of a child, the role of both mother and child’s emotional mechanisms in these behaviors is little explored. The present study was focused on the relationship between the mother’s personality, and internalizing and externalizing behaviors of children with the mediating role of children’s alexithymia, mother’s alexithymia, and children’s emotion regulation (ER). Method: 162 mothers and elementary school-aged children were recruited regarding their demographics and completed the NEO personality inventory, Child behavior checklist, Toronto alexithymia scale, Children’s alexithymia measure, and Children’s emotion regulation checklist. Data were analyzed using SPSS (ver.23), and AMOS (ver.23). Results: Structural equations modeling demonstrated an acceptable model fit to data (CMIN/DF = 1.233, RSME = 0.038, GFI = 0.962). Mother’s alexithymia predicted internalizing problems whereas it didn’t predict externalizing problems in children. Also, the bootstrap results indicated that the mother and children’s alexithymia and children’s ER had mediating roles between mother’s personality and externalizing and internalizing problems. Conclusion: The present results demonstrated that mother’s personality can indirectly, through mother and children’s alexithymia and children’s ER act as an important factor in development of mental problems. In other words, findings indicated that children’s emotional development is not a one-way road, but it is a mutual process that involves both the mother and the child.