Comparing the genetic architecture of childhood behavioral problems across socioeconomic strata in the Netherlands and the United Kingdom.

Socioeconomic status (SES) affects the development of childhood behavioral problems. It has been frequently observed that children from low SES background tend to show more behavioral problems. There also is some evidence that SES has a moderating effect on the causes of individual differences in childhood behavioral problems, with lower heritability estimates and a stronger contribution of environmental factors in low SES groups. The aim of the present study was to examine whether the genetic architecture of childhood behavioral problems suggests the presence of protective and/or harmful effects across socioeconomic strata, in two countries with different levels of socioeconomic disparity: the Netherlands and the United Kingdom. We analyzed data from 7-year-old twins from the Netherlands Twin Register (N = 24,112 twins) and the Twins Early Development Study (N = 19,644 twins). The results revealed a nonlinear moderation effect of SES on the contribution of genetic and environmental factors to individual differences in childhood behavioral problems. The heritability was higher, the contribution of the shared environment was lower, and the contribution of the nonshared environment was higher, for children from high SES families, compared to children from low or medium SES families. The pattern was similar for Dutch and UK families. We discuss the importance of these findings for prevention and intervention goals.

The heritability of self-control: A meta-analysis.

Self-control is the ability to control one's impulses when faced with challenges or temptations, and is robustly associated with physiological and psychological well-being. Twin studies show that self-control is heritable, but estimates range between 0% and 90%, making it difficult to draw firm conclusions. The aim of this study was to perform a meta-analysis to provide a quantitative overview of the heritability of self-control. A systematic search resulted in 31 included studies, 17 reporting on individual samples, based on a sample size of >30,000 twins, published between 1997 and 2018. Our results revealed an overall monozygotic twin correlation of 0.58, and an overall dizygotic twin correlation of 0.28, resulting in a heritability estimate of 60%. The heritability of self-control did not vary across gender or age. The heritability did differ across informants, with stronger heritability estimates based on parent report versus self-report or observations. This finding provides evidence that when aiming to understand individual differences in self-control, one should take genetic factors into account. Recommendations for future research are discussed.

Childhood aggression: A synthesis of reviews and meta-analyses to reveal patterns and opportunities for prevention and intervention strategies.

This study provides a synthesis of meta-analyses and systematic reviews on non-pharmacological treatments for childhood aggression. Treatments referred to universal prevention, selective prevention, indicated prevention, or intervention (Mrazek and Haggerty, 1994). Seventy-two meta-analyses and systematic reviews met the inclusion criteria. We describe their characteristics, effect sizes across types of treatments, and the effects of various moderators. For universal and selective prevention, effects were mostly absent or small; for indicated prevention and interventions, effects were mostly small or medium. Only two moderators had a positive effect on treatment effectiveness, namely pre-test levels of aggression and parental involvement. These results identified similarities between indicated prevention and intervention treatments, on the one hand, and universal prevention and selective prevention, on the other. Our findings suggest that research distinguishing between targets of treatments (i.e., factors associated with childhood aggression vs. present aggressive behaviors) would be promising. Moreover, to further increase effectiveness of treatments for childhood aggression, individual differences warrant scientific attention.

The traumatization of grief? A conceptual framework for understanding the trauma-bereavement interface.

Scientific opinion differs on whether pathological (or complicated, traumatic) grief is an entity distinct from post-traumatic stress disorder. Some argue that it is different, and for the creation of a new category of pathological grief for the DSM system, while others consider bereavement and associated grief reactions to fall within the category of traumatic life events, for which the existing system would offer adequate classification. Although investigators have begun to explore similarities and differences in the trauma and bereavement domains, there is still confusion and lack of consensus about definitions and basic concepts. A conceptual framework, suggested here, may help bring clarity to the area. Our analysis shows that the lack of consensus about the nature of reactions and disorders of bereavement is due to concentration on different parts of the framework. Furthermore, the lack of differentiation between traumatic and non-traumatic bereavement has caused neglect of the unique features of non-traumatic grief reactions. These components need further exploration, especially since extension of DSM classification is currently under consideration.

Flashbulb memories in social groups: a comparative test-retest study of the memory of French President Mitterrand's death in a French and a Belgian group.

Flashbulb memories are vivid and long-lasting memories for the reception context of an important public event (Brown & Kulik, 1977). They are assumed to be triggered by emotional factors (i.e., intensity of emotional feeling, appraisal of the original event) and by social factors (i.e., social sharing of the news, following media debate about the event). The present study investigated the memory for the death of the former President of France F. Mitterrand in two social groups, i.e., French and Belgian people. This study tests whether the flashbulb memory attributes, the memory for the original event, and the impact of the emotional and social determinants of flashbulb memory differed across groups. The results indicated that the flashbulb memory for Mitterrand's death is affected by group provenance, as French people showed higher levels of recall for the flashbulb memory attributes and their determinants than Belgian people. Time impaired recollections in both groups, so that flashbulb memories appear prone to decay and share the same destiny as ordinary memories. The theoretical construct of concern--as the most basic antecedent of emotional experiences and its related appraisal (Frijda, 1994)--is discussed in order to explain the differences in memory of the two social groups.

Long-term psychosocial adjustment following pediatric liver transplantation.

This study assessed long-term psychosocial adjustment to pediatric liver transplantation in 146 patients aged 4-25 yr, who had received a transplant 2-12 yr previously. Evaluations of psychosocial adjustment and related variables were based on the Harter Self-Perception Profiles for children, Child Behavior Checklist (CBCL), and children's academic level. Up to the age of 8 yr, transplant children as a group did not perceive themselves as less competent than healthy peers. Gender effects were characterized by older girls perceiving significantly less scholastic cognitive competence than their healthy peers. Adolescent and young adult boys had significantly lower global self-worth and lower perceived athletic competence than their healthy peers. In comparison to normative data of healthy children, CBCL parent-reported scores revealed significant deficits in competences for all age groups. Only for the older boys, however, did these deficits reported by the parents reach a pathological level. The majority of transplant children also had significantly higher problem scores, but they remained within the normal range, except for the older boys whose internalizing problems reached a borderline level. Our results suggest that liver transplantation does not substantially affect schooling. Regardless of statistically significant differences in psychosocial adjustment, the majority of the transplant children functioned at a normal level. For adolescent and young adult boys, however, the presence of problems and the lack of competences observed by parents and by the youngsters themselves reached borderline to pathological levels. Our findings stress the importance of psychological post-transplant follow-up with increased attention of caregivers to child and parental concerns about their long-term psychosocial adjustment process.

Flashbulb memories and the underlying mechanisms of their formation: toward an emotional-integrative model.

Flashbulb memories (FBMs) are detailed recollections of the context in which people first heard about important events. The present study investigates three models of the formation and maintenance of FBM. Two models have previously been proposed in the literature (Brown & Kulik, 1977; Conway et al., 1994). A third model of FBM that integrates theories of FBM and recent developments in the field of emotions is proposed. The present study compares these three competing models by investigating the FBMs that Belgian citizens developed upon learning of the unexpected death of their king Baudouin. Structural equation modeling revealed that, as compared to the two previously proposed models, the third model, which takes into account emotional processes, better explains FBM.

Keeping Emotional Memories Secret: Health and Subjective Well-being when Emotions are not Shared.

The present study investigated two predictions derived from inhibition theory. It was hypothesized that emotional secrecy has a negative impact on (1) physical and (2) subjective well-being. Also, the study examined whether the relation holds when controlling for negative affectivity (NA), a variable that can be assumed to mediate the relation between emotional secrecy and physical and subjective well-being. Consistent with the hypothesis, emotional secrecy negatively affected physical health. This finding was not explained by NA, which contributed independently to physical health. Contrary to the prediction, emotional secrecy affected life satisfaction but indirectly through the mediating influence of physical health. The implications of these results for future research on emotional secrecy and physical and subjective well-being are discussed.

Psychological and social adjustment after pediatric liver transplantation as a function of age at surgery and of time elapsed since transplantation.

The study assessed psychological and social adjustment to pediatric liver transplantation in 101 patients aged 4-16 years who had undergone transplantation 2-10 years earlier. Each parent completed the Child Behavior Check List (CBCL) independently and answered a transplantation questionnaire assessing psychosocial issues. Most children scored within the normal range for both parts of the CBCL (i.e. Behavioral Problems and Social Competences). The impact of age at transplantation and of time elapsed since transplantation were examined. Earlier transplantation was associated with subsequent higher scores for Aggressive Behavior and Sex Problems, with lower scores for Activities and Competences, and with more parental anxiety concerning their child's health. The longer the time elapsed since transplantation, the more mothers rated high levels on the Somatic complaints, Anxiety/depression, Competence, and Social activity CBCL scales for their child. Parents reported talking more about the transplantation with their children with increasing time following transplantation. This suggests that transplantation remains an important event even after long periods of time from the transplant event. Finally, despite the difficulties encountered, more than 80% of the parents considered the transplantation had been beneficial to their child.