Dietary interventions,the gut microbiome,and aggressive behavior: Review of research evidence and potential next steps

Research in biosocial criminology and other related disciplines has established links between nutrition and aggressive behavior. In addition to observational studies, randomized trials of nutritional supplements like vitamins, omega-3 fatty acids, and folic acid provide evidence of the dietary impact on aggression. However, the exact mechanism of the diet-aggression link is not well understood. The current article proposes that the gut microbiome plays an important role in the process, with the microbiota–gut–brain axis serving as such a mediating mechanism between diet and behavior. Based on animal and human studies, this review synthesizes a wide array of research across several academic fields: from the effects of dietary interventions on aggression, to the results of microbiota transplantation on socioemotional and behavioral outcomes, to the connections between early adversity, stress, microbiome, and aggression. Possibilities for integrating the microbiotic perspective with the more traditional, sociologically oriented theories in criminology are discussed, using social disorganization and self-control theories as examples. To extend the existing lines of research further, the article considers harnessing the experimental potential of noninvasive and low-cost dietary interventions to help establish the causal impact of the gut microbiome on aggressive behavior, while adhering to the high ethical standards and modern research requirements. Implications of this research for criminal justice policy and practice are essential: not only can it help determine whether the improved gut microbiome functioning moderates aggressive and violent behavior but also provide ways to prevent and reduce such behavior, alone or in combination with other crime prevention programs.     

Mother–infant interaction and maternal postnatal psychological distress are associated with negative emotional reactivity among infants and toddlers— A FinnBrain Birth Cohort study

Studies have reported mixed findings regarding the effects of mother-infant interaction and maternal distress on children’s negative emotional reactivity. In the current study (N = 134 and 107), we examined the effects of maternal Emotional Availability (sensitivity, structuring, non-intrusiveness and non-hostility) and maternal psychological distress on negative reactivity among children in the FinnBrain birth cohort study. In addition, the possible moderating effect of mother-infant interaction on the associations between maternal psychological distress and children's negative reactivity was examined. We used questionnaires to asses maternal psychological distress, observations of mother-infant interaction and observations as well maternal reports of child temperament to overcome the key limitations of many studies relying on single-method assessments. Our results showed that higher maternal sensitivity and structuring at 8 months of child’s age were associated with lower mother-reported negative reactivity among children at 24 months. Higher maternal postnatal distress associated with higher parent-reported negative reactivity in children at 12 and 24 months of age when the effects of prenatal distress and the quality of mother-infant interaction were controlled for. Mother-infant interaction and maternal psychological distress did not associate with observations of child negative reactivity. We found no moderation effects of mother-infant interaction regarding the associations between maternal distress and children’s negative emotional reactivity. Our findings reflect the importance of developing interventions to reduce the maternal distress symptoms while enhancing maternal sensitivity and structuring to prevent the possible harmful effects of these on child negative reactivity.     

Savoring interventions for mothers of young children: Mechanisms linking relational savoring and personal savoring to reflective functioning

Parenting interventions can improve parenting outcomes, with widespread implications for children's developmental trajectories. Relational savoring (RS) is a brief attachment-based intervention with high potential for dissemination. Here we examine data from a recent intervention trial in order to isolate the mechanisms by which savoring predicts reflective functioning (RF) at treatment follow-up through an examination of the content of savoring sessions (specificity, positivity, connectedness, safe haven/secure base, self-focus, child-focus). Mothers (N = 147, M_age = 30.84 years, SD_age = 5.13; Race: 67.3% White/Caucasian, 12.9% other or declined to state; 10.9% biracial/multiracial, 5.4% Asian, 1.4% Native American/Alaska Native, 2.0% Black/African American; Ethnicity: 41.5% Latina) of toddlers (M_age = 20.96 months, SD_age = 2.50; 53.5% female) were randomized to four sessions of RS or personal savoring (PS). Both RS and PS predicted higher RF, but through different means. RS was indirectly associated with higher RF through greater connectedness and specificity of savoring content, while PS was indirectly associated with higher RF through greater self-focus in savoring content. We discuss the implications of these findings for treatment development and for our understanding of the emotional experience of mothers of toddlers.     

Interactive effects of self-concept and social context on perceived cohesion in intensive care nursing

Group cohesion is critical in the workplace, especially when individual and contextual constraints coexist but high performance is essential. We assess the source of variation in group members' perceptions of cohesion. Using an interactional psychology perspective, and within the context of intensive care, this study examines the interactive effects of nurses' self-concept and the objective social context within which they are embedded. Individual- and unit-level factors are investigated because they jointly shape the degree to which nurses perceive their intensive care units as cohesive. A multisource, multilevel study of approximately 140 nurses employed in 20 units across Denmark demonstrates the role self-concept plays in easing and enhancing the constraints workplaces impose on cohesion. Implications for research on emergent states and interactional psychology are discussed.     

Selecting entrepreneurial employees using a person-group fit perspective

As jobs become unstructured and collective endeavor oriented, it is increasingly being realized that work groups must become more autonomous and entrepreneurial. The selection literature is however silent on the predictive mechanisms that may be leveraged to select group members with the desired competencies. The person-group fit perspective enables us to hypothesize and demonstrate that selection instruments geared toward gauging an individual's fit within a group are likely to manifest entrepreneurial competencies and behaviors in the individual. Further, the nature of the job, in terms of the structuredness of work (task formalization) and the repetitiveness of work activities (task routinization), has a moderating impact on the relationship between overall entrepreneurial competence and selection practices. The study has implications for incorporating the principles of person-group fit into the design of job profiles.     

Videoconference to supervise early intensive behavioral intervention: A preliminary evaluation of acceptability

At present, early intensive behavioral intervention (EIBI) for children with autism spectrum disorders is the intervention that has the strongest empirical support. EIBI requires frequent supervision by qualified professionals. Norway, like many other countries, has a shortage of qualified supervisors, particularly in rural regions. This study used a reversal design to investigate how supervisors and supervisees perceive the quality of EIBI supervision and the local team's preparedness when supervision was provided either on-site or via videoconference. Calculations were made on how much time could be saved on travel when part of the supervision was provided via videoconference. There were no significant differences in the supervisors' and supervisees' ratings of on-site and videoconference supervision. Moreover, the supervisors found the local EIBI teams to be better prepared when supervision was provided via videoconference, and the videoconference supervision meetings were shorter. The study discusses the implications of these findings for the accessibility of EIBI and case capacity and proposes some areas for further research.     

Self-compassion reduces parental burnout: Mediation roles of parental psychological control and support

This study investigated the mediating role of parental psychological control (PPC) and support in the relationship between self-compassion and parental burnout syndrome. The study participants included 1185 Vietnamese parents who completed questionnaires regarding demographic information, parental burnout, self-compassion, parental support of the child, and PPC. We used data analyses, including structural equation modeling, to test the mediation roles of PPC and parental support of the child. Our main findings include: (1) self-compassion had a significant negative effect on parental burnout; (2) the mediation roles of PPC and parental support of the child were also significant. These results suggest that parents with high self-compassion tend to provide more support for children in daily parenting, which helps reduce parental burnout. In contrast, parents with low self-compassion were more likely to use PPC, which exacerbated their burnout. The results from this study provide suggestions for creating effective interventions in the family context to reduce parental burnout and improve parenting effectiveness.     

Effects of foster care intervention and caregiving quality on the bidirectional development of executive functions and social skills following institutional rearing

Institutional rearing negatively impacts the development of children's social skills and executive functions (EF). However, little is known about whether childhood social skills mediate the effects of the foster care intervention (FCG) and foster caregiving quality following early institutional rearing on EF and social skills in adolescence. We examined (a) whether children's social skills at 8 years mediate the impact of the FCG on the development of EF at ages 12 and 16 years, and (b) whether social skills and EF at ages 8 and 12 mediate the relation between caregiving quality in foster care at 42 months and subsequent social skills and EF at age 16. Participants included abandoned children from Romanian institutions, who were randomly assigned to a FCG (n = 68) or care as usual (n = 68), and a never-institutionalized group (n = 135). At ages 8, 12, and 16, social skills were assessed via caregiver and teacher reports and EF were assessed via the Cambridge Neuropsychological Test Automated Battery. Caregiving quality of foster caregivers was observed at 42 months. FCG predicted better social skills at 8 years, which in turn predicted better EF in adolescence. Higher caregiver quality in foster care at 42 months predicted better social skills at 8 and 12 years, and better EF at 12 years, which in turn predicted 16-year EF and social skills. These findings suggest that interventions targeting caregiving quality within foster care home environments may have long-lasting positive effects on children's social skills and EF.