Disentangling genetic and environmental influences on early language development: The interplay of genetic propensity for negative emotionality and surgency, and parenting behavior effects on early language skills in an adoption study

Parenting and children's temperament are important influences on language development. However, temperament may reflect prior parenting, and parenting effects may reflect genes common to parents and children. In 561 U.S. adoptees (57% male) and their birth and rearing parents (70% and 92% White, 13% and 4% African American, and 7% and 2% Latinx, respectively), this study demonstrated how genetic propensity for temperament affects language development, and how this relates to parenting. Genetic propensity for negative emotionality inversely predicted language at 27 months (β = -.15) and evoked greater maternal warmth (β = .12), whereas propensity for surgency positively predicted language at 4.5 years (β = .20), especially when warmth was low. Parental warmth (β = .15) and sensitivity (β = .19) further contributed to language development, controlling for common gene effects.

The Detection of Environmental Influences on Academic Achievement Appears to Depend on the Analytic Approach

One long-standing analytic approach in adoption studies is to examine correlations between features of adoptive homes and outcomes of adopted children (hereafter termed 'measured environment correlations') to illuminate environmental influences on those associations. Although results from such studies have almost uniformly suggested modest environmental influences on adopted children's academic achievement, other work has indicated that adopted children's achievement is routinely higher than that of their reared-apart family members, often substantially so. We sought to understand this discrepancy. We examined academic achievement and literacy-promotive features of the home in 424 yoked adoptive/biological families participating in the Early Growth and Development Study (EGDS; i.e., adopted children, adoptive mothers, birth mothers, and biological siblings of the adopted children remaining in the birth homes) using an exhaustive modeling approach. Results indicated that, as anticipated, adopted children scored up to a full standard deviation higher on standardized achievement tests relative to their birth mothers and reared-apart biological siblings. Moreover, these achievement differences were associated with differences in the literacy-promotive features of the adoptive and birth family homes, despite minimal measured environment correlations within adoptive families. A subsequent simulation study highlighted noise in measured environmental variables as an explanation for the decreased utility of measured environment correlations. We conclude that the field's heavy focus on measured environment correlations within adoptive families may have obscured detection of specific environmental effects on youth outcomes, and that future adoption studies should supplement their measured environment analyses with mean differences between reared-apart relatives.

Influence of early childhood parental hostility and socioeconomic stress on children's internalizing symptom trajectories from childhood to adolescence

Introduction

Children and adolescents with elevated internalizing symptoms are at increased risk for depression, anxiety, and other psychopathology later in life. The present study examined the predictive links between two bioecological factors in early childhood-parental hostility and socioeconomic stress-and children's internalizing symptom class outcomes, while considering the effects of child sex assigned at birth on internalizing symptom development from childhood to adolescence.

Materials and Methods

The study used a sample of 1,534 children to test the predictive effects of socioeconomic stress at ages 18 and 27 months; hostile parenting measured at child ages 4-5; and sex assigned at birth on children's internalizing symptom latent class outcomes at child ages 7-9, 10-12, 13-15, and 16-19. Analyses also tested the mediating effect of parenting on the relationship between socioeconomic stress and children's symptom classes. Other covariates included parent depressive symptoms at child ages 4-5 and child race and ethnicity.

Results

Analyses identified three distinct heterogenous internalizing symptom classes characterized by relative symptom levels and progression: low (35%); moderate and increasing (41%); and higher and increasing (24%). As anticipated, higher levels of parental hostility in early childhood predicted membership in the higher and increasing symptom class, compared with the low symptom class (odds ratio (OR) = .61, 95% confidence interval (CI) [.48,.77]). Higher levels of early childhood socioeconomic stress were also associated with the likelihood of belonging to the higher-increasing symptom class compared to the low and moderate-increasing classes (OR = .46, 95% CI [.35,.60] and OR = .56, 95% CI [.44,.72], respectively). The total (c = .61) and direct (c' = .57) effects of socioeconomic stress on children's symptom class membership in the mediation analysis were significant (p <.001).

Discussion

Study findings suggest that intervening on modifiable bioecological stressors-including parenting behaviors and socioeconomic stressors-may provide important protective influences on children's internalizing symptom trajectories.

Associations Among Plurisexual Identity, Intimate Partner Violence, Reproductive Coercion, and Parental Monitoring in a Sample of Adolescent and Young Adult Pregnant People

Purpose: The goal of this study was to examine plurisexual identity, intimate partner violence (IPV), reproductive coercion, and parental monitoring among pregnant 13-21-year-olds. Methods: We conducted a cross-sectional analysis of data collected from a cohort of pregnant adolescents and young adults between October 2019 and May 2023 (n = 398). Logistic regression was completed to assess IPV and reproductive coercion as a function of plurisexual identity. Next, we assessed potential interactions between parental monitoring and plurisexual identity and examined IPV and reproductive coercion as a function of parental monitoring for the full sample and stratified by plurisexuality. Results: Plurisexual identity was associated with IPV (adjusted odds ratio [aOR] = 2.3; confidence interval [CI]: 1.4-4.0). IPV was inversely related to parental monitoring among plurisexual participants (aOR: 0.51; CI: 0.32-0.82), but this association was not significant for heterosexual participants (aOR: 1.1; CI: 0.75-1.6). Conclusions: This work demonstrates the importance of parental monitoring in supporting young plurisexual pregnant people.

Commentary on 'Grandparental care and child mental health: a systematic review and meta-analysis'

The manuscript by Wang et al. contributes mightily to our limited understanding of grandparental care and children's mental health problems. As the authors document, despite the growing number of families worldwide where grandparents serve as the sole primary caregivers or reside with the children's parents to share caregiving responsibilities, and the growing number of studies examining associations between grandparental care and children's mental health-related outcomes, systematic reviews and meta-analyses integrating this literature are missing. There are meta-analyses on relations between grandparental care and such child outcomes as physical health, nutrition and obesity, education, and even resilience, but the extant literature on child outcomes has been limited to more qualitatively oriented reviews and has typically focused on child internalizing and externalizing problems. Thus, the current meta-analysis adds a novel and critically missing quantitative component to our broad understanding of the associations between grandparental care and children's problem behavior. In addition, beyond studies examining children's internalizing and externalizing outcomes, the authors also report on several studies (n = 7) that examine children's positive well-being and overall mental health. Overall, among the 38 studies deemed acceptable for review, the meta-analysis included findings from nearly 345,000 children, with a mean age of 10 years and slightly more female (51%) than male children.

Unique influences of pregnancy and anticipated parenting on cigarette smoking: results and implications of a within-person, between-pregnancy study

Not all pregnant individuals want to become parents and "parenting intention" can also vary within individuals during different pregnancies. Nevertheless, the potential impact of parenting intention on health-related behavior during pregnancy has been heavily underexplored. In this study, we employed a within-person between pregnancy design to estimate the effect of parenting-specific influences on smoking, separate from pregnancy-specific and individual-level influences. We quantified within-mother differences in smoking during pregnancies of infants they reared (n = 84) versus pregnancies of infants they placed for adoption at birth (n = 65) using multivariate mixed-effects Poisson regression models. Mean cigarettes/day declined as the pregnancy progressed regardless of whether infants were reared or placed. However, participants smoked fewer cigarettes/day during reared pregnancies. Relative to "adopted" pregnancies, smoking during "reared" pregnancies was lower by 24%, 41%, and 54% in first (95% CI 0.64-0.90; p = 0.001), second (95% CI 0.48-0.72; p < 0.001), and third trimesters (95% CI 0.36-0.59; p < 0.001), respectively, independent of between-pregnancy differences in maternal age, fetal sex, parity, and pregnancy complications. Female sex and nulliparity were protective. Parenting intention was associated with a protective effect on pregnancy smoking independent of pregnancy-specific influences and individual characteristics. Failure to consider the impact of parenting intention on health-related behavior during pregnancy could perpetuate an unrealistic expectation to "do what's best for the baby" and stigmatize women with unintended or unwanted pregnancies.

Examining timing effects in the intergenerational transmission of anxiety and depressive symptoms: A genetically informed study

The present study examined genetic, prenatal, and postnatal environmental pathways in the intergenerational transmission of anxiety and depressive symptoms from parents to early adolescents (when these symptoms start to increase), while considering timing effects of exposure to parent anxiety and depressive symptoms postnatally. The sample was from the Early Growth and Development Study, including 561 adopted children (57% male, 55% White, 13% Black/African American, 11% Hispanic/Latine, 20% multiracial, 1% other; 407 provided data in early adolescence) and their birth (BP) and adoptive parents (AP). Using a trait-state-occasion model with eight assessments from child ages 9 months to 11 years, we partitioned trait-like AP anxiety and depressive symptoms from time-specific fluctuations of AP anxiety and depressive symptoms. Offspring anxiety and depressive symptoms were assessed at 11 years (while controlling for similar symptoms at 4.5 years). Results suggested that time-specific fluctuations of AP1 (mostly mothers) anxiety/depressive symptoms in infancy (9 months) were indirectly associated with offspring anxiety/depressive symptoms at 11 years via offspring anxiety/depressive symptoms at 4.5 years; time-specific fluctuations of AP1 anxiety/depressive symptoms at child age 11 years were concurrently associated with offspring anxiety/depressive symptoms at 11 years. AP2 (mostly fathers) anxiety/depressive symptoms were not associated with offspring symptoms. Genetic and prenatal influences measured by BP internalizing problems were not associated with offspring symptoms. Results suggested infancy and early adolescence as developmental periods when children are susceptible to influences of parent anxiety and depressive symptoms. Preventive interventions should consider time-specific fluctuations in parent anxiety and depressive symptoms during these developmental periods. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Integrating equifinality and multifinality into the of prevention programs in early childhood: The conceptual case for use of tiered models

Introduced in the context of developmental psychopathology by Cicchetti and Rogosh in the Journal, the current paper incorporates the principles of equifinality and multifinality to support the use of tiered models to prevent the development of emerging child psychopathology and promote school readiness in early childhood. We use the principles of equifinality and multifinality to describe the limitations of applying one intervention model to address all children presenting with different types of risk for early problem behavior. We then describe the potential benefits of applying a tiered model for having impacts at the population level and two initial applications of this approach during early childhood. The first of these tiered models, Smart Beginnings, integrates the use of two evidenced-based preventive interventions, Video Interaction Project, a universal parenting program, and Family Check-Up, a selective parenting program. Building on the strengths of Smart Beginnings, the second trial, The Pittsburgh Study includes Video Interaction Project and Family Check-Up, and other more and less-intensive programs to address the spectrum of challenges facing parents of young children. Findings from these two projects are discussed with their implications for developing tiered models to support children's early development and mental health.

The pernicious role of stress on intergenerational continuity of psychopathology

Development and Psychopathology has been a premier resource for understanding stressful childhood experiences and the intergenerational continuity of psychopathology. Building on that tradition, we examined the unique and joint influences of maternal stress on children's effortful control (age 7) and externalizing behavior (age 11) as transmitted via genetics, the prenatal environment, and the postnatal environment. The sample included N = 561 adopted children and their biological and adoptive parents. Path models identified a direct effect of biological mother life stress on children's effortful control (β = -.08) and an indirect effect of her life stress on child externalizing behavior via effortful control (β = .52), but no main or indirect effects of biological parent psychopathology, prenatal stress, or adoptive mother adverse childhood experiences (ACES). Adoptive mother ACES amplified the association between biological mother life stress and child effortful control (β = -.08), externalizing behavior (β = 1.41), and the indirect effect via effortful control, strengthening associations when adoptive mothers reported average or high ACES during their own childhoods. Results suggest that novel study designs are needed to enhance the understanding of how life stress gets "under the skin" to affect psychopathology in the offspring of adults who have experienced stress.

Paternal Activation as a Protective Factor against Problem Behaviors in Early Childhood

Activation parenting includes behaviors that challenge children to approach novel situations, explore their environments, and take physical and socioemotional risks through a balance of encouragement and limit-setting. Although components of activation parenting have been linked to lower levels of children's problem behaviors, comprehensive measures of activation parenting and longitudinal research on families from low socioeconomic backgrounds are lacking. The goal of the present study was to test associations between paternal activation parenting at age 3 and children's externalizing and internalizing problems at age 5 in a sample of low-income, ethnically diverse fathers. Participating fathers (N = 171; 9% Black, 47% white, 8% Latinx; mean household income = $25,145) and their children (51% female) were drawn from the Early Steps Multisite Study. Activation parenting during a teaching task at child age 3 was associated with lower levels of internalizing problems at age 5 and decreases in externalizing problems from baseline (age 2). Implications of the current findings are presented for future research on associations between activation parenting and child problem behaviors, including the potential for the development of prevention and intervention programs.

Developmental genetic effects on externalizing behavior and alcohol use: Examination across two longitudinal samples

Externalizing behavior in early adolescence is associated with alcohol use in adolescence and early adulthood and these behaviors often emerge as part of a developmental sequence. This pattern can be the result of heterotypic continuity, in which different behaviors emerge over time based on an underlying shared etiology. In particular, there is largely a shared genetic etiology underlying externalizing and substance use behaviors. We examined whether polygenic risk for alcohol use disorder predicted (1) externalizing behavior in early adolescence and alcohol use in adolescence in the Early Steps Multisite sample and (2) externalizing behavior in adolescence and alcohol use in early adulthood in the Project Alliance 1 (PAL1) sample. We examined associations separately for African Americans and European Americans. When examining European Americans in the Early Steps sample, greater polygenic risk was associated with externalizing behavior in early adolescence. In European Americans in PAL1, we found greater polygenic risk was associated with alcohol use in early adulthood. Effects were largely absent in African Americans in both samples. Results imply that genetic predisposition for alcohol use disorder may increase risk for externalizing and alcohol use as these behaviors emerge developmentally.

Cascading Influences of Caregiver Experiences of Discrimination and Adolescent Antisocial Behavior

OBJECTIVE

Although a growing body of work has found that parents' experiences of racial and socioeconomic (SES) based discrimination are directly related to their children's behavior problems , more work is needed to understand possible pathways by which these factors are related and to identify potential targets for prevention and/or intervention.

METHOD

Using a large (N = 572), longitudinal sample of low-income families from diverse racial backgrounds, the current study explored whether caregivers' experiences of racial and SES discrimination during their children's middle childhood (i.e. ages 7.5-9.5) predicted youth-reported antisocial behavior during adolescence and potential factors mediating these associations (e.g. caregiver depressive symptoms and positive parenting practices).

RESULTS

We found that higher levels of caregiver experiences of discrimination at child ages 7.5-9.5 predicted higher levels of caregiver depressive symptoms at child age 10.5, which were related to lower levels of caregiver endorsement of positive parenting practices at child age 14.5, which in turn, predicted higher levels of youth-reported antisocial behavior at age 16.

CONCLUSION

The findings highlight the adverse effects of racism and discrimination in American society. Second, the findings underscore the need to develop interventions which mitigate racism and discrimination among perpetrators and alleviate depressive symptoms among caregivers.

An exploration of the domain specificity of maternal sensitivity among a diverse sample in the infancy period: Unique paths to child outcomes

Maternal sensitivity during an observed mother-child clean-up task at 18 months and maternal sensitivity during an observed mother-child free-play task at 18 months were tested as independent predictors of child internalizing symptoms, externalizing symptoms, social competence, and language development at 24 months. Participants (n = 292 mothers) were recruited between 2015 and 2017, and were low-income (mean annual income = $19,136) and racially and ethnically diverse (43.8% Black; 44.2% Latinx). Maternal sensitivity during clean-up was a significant predictor of all social-emotional outcomes, and a unique predictor of child internalizing symptoms. Maternal sensitivity during free-play was a unique predictor of child language. Results suggest that context-specific subtypes of maternal sensitivity may differentially relate to early child outcomes.

The Premise, Promise, and Challenges of Intensive Assessment and Dynamic Quantitative Methods for Child and Adolescent Externalizing Problems

This commentary discusses how papers from the Special Issue fill important gaps in the measurement and quantification of dynamic processes of child behaviors and parent-child interactions linked to child externalizing symptoms. After highlighting some of the innovative qualities of selected papers, challenges and future directions for the development of intensive measurement and dynamic quantitative methods are described. These topics follow from a developmental psychopathology framework that emphasizes measurement using both micro and macro methods, longitudinal research designs, and the recruitment of children that demonstrate clinically meaningful levels of externalizing problem behavior.

Enhancing early language and literacy skills for racial/ethnic minority children with low incomes through a randomized clinical trial: The mediating role of cognitively stimulating parent-child interactions

Parenting is a critical mediator of children's school readiness. In line with this theory of change, data from the randomized clinical trial of Smart Beginnings (tiered Video Interaction Project and Family Check-Up; N = 403, treatment arm n = 201) were used to examine treatment impacts on early language and literacy skills at child age 4 years (nLatinx  = 168, nBlack  = 198, nMale  = 203), as well as indirect impacts through parental support of cognitive stimulation at child age 2 years. Although results did not reveal direct effects on children's early skills, there were significant indirect effects for early literacy (β = .03, p = .05) and early language (β = .04, p = .04) via improvements in parental cognitive stimulation. Implications for interventions targeting parenting to improve children's school readiness beginning at birth are discussed.

Examination of promotive and protective effects on early adolescent prosocial behavior through a bioecological lens

Introduction

Prosocial behavior during childhood has been associated with numerous positive developmental and behavioral outcomes in adolescence and adulthood. Prosocial behavior, which includes cooperation and helping others, develops within a bioecological context. Considering it through such a lens enhances the understanding of the roles of different bioecological factors in its development.

Methods

Using data from a longitudinal study of adopted children and children reared with their biological parents, this paper examined if positive aspects of a child's bioecological system at age 7 predict prosocial behavior in early adolescence (age 11), and whether these bioecological factors could offset risk due to biological family psychopathology and/or maternal prenatal substance use. The analyses incorporated variables from different levels of Bronfenbrenner's bioecological model (the individual, microsystem, exosystem, and macrosystem) and examined the promotive, and potentially protective, effect of each contextual factor, while also considering their interplay with biological family psychopathology and prenatal substance use.

Results

Results from linear regression models indicated that the microsystem variable of parental warmth at age 7 had a promotive effect on age 11 prosocial behavior. Further, in addition to its main effect, parental warmth was protective against maternal substance use during pregnancy when children were raised with their biological parent (s). Household type (biological family) and biological family internalizing psychopathology were the only other significant predictors in the model, with each associated with lower prosocial behavior at age 11.

Discussion

Study results extend prior work on the benefits of parental warmth on child outcomes by employing a strength-based, bioecological approach to the development of prosocial behavior during early adolescence and examining "for whom" the effects of parental warmth are most protective.

How pubertal timing and self-regulation predict adolescent sexual activity in resource-poor environments

Studies found support for a link between pubertal timing and self-regulation in low-resource environments. This link could potentially explain a link between pubertal timing and early risk behavior. This study builds on this body of research by examining the mediated effect of pubertal timing on sexual activity through self-regulation in 728 adolescents and their families in a group with poor resources and a group with adequate resources. Income-to-Needs (ITN) was measured at age 7.5 to establish two groups (low-ITN and Medium/High-ITN). Pubertal timing was measured at age 10.5, self-regulation was assessed at age 14 and operationalized with effortful control, and sexual activity was assessed at age 16. Structural equation modeling was employed to test the hypothesized model in both groups. The link between pubertal timing and sexual activity mediated by effortful control was only significant in the low-ITN group. Specifically, more advanced pubertal maturity was associated with lower levels of adolescents' effortful control, which in turn was associated with more sexual activity at age 16. Findings were partially replicated with a drug use index replacing sexual activity. This study shows a different operating link from pubertal timing to effortful control and subsequent risk behavior in resource-poor environments. Implications are discussed.

Modeling BMI z score lability during childhood as a function of child temperament and genetic risk for obesity

OBJECTIVE

This study aimed to examine whether child genetic risk for obesity and temperament (i.e., negative affectivity, effortful control) accounted for stability versus lability in children's weight status (BMI z score) over time.

METHODS

A total of 561 adopted children (42% female; 56% Caucasian, 13% African American, 11% Latino, and 20% other) and their birth and adoptive parents were followed from birth to age 9 years. The multilevel location-scale model was used to examine whether child genetic risk for obesity and temperament were related to differences in level and lability in child BMI z scores over time.

RESULTS

For the full sample, higher levels of child negative affectivity were associated with greater BMI z score lability, whereas higher levels of effortful control and children's mean-level BMI z scores were related to less lability across childhood. Additional analyses examined associations within groups of children with healthy versus overweight/obesity weight statuses. Within the healthy weight status group only, better effortful control was associated with more stable BMI z scores, whereas genetic risk for higher BMI was associated with more labile BMI z scores.

CONCLUSIONS

These findings provide insights into factors that can be harnessed to redirect unhealthy trajectories as well as factors that may challenge redirection or maintain a healthy trajectory.

A Polygenic Risk Score Enhances Risk Prediction for Adolescents' Antisocial Behavior over the Combined Effect of 22 Extra-familial, Familial, and Individual Risk Factors in the Context of the Family Check-Up

Possessing informative tools to predict who is most at risk for antisocial behavior in adolescence is important to help identify families most in need of early intervention. Polygenic risk scores (PRSs) have been shown to predict antisocial behavior, but it remains unclear whether PRSs provide additional benefit above more conventional tools to early risk detection for antisocial behavior. This study examined the utility of a PRS in predicting adolescents' antisocial behavior after accounting for a broad index of children's contextual and individual risk factors for antisocial behavior. Participants were drawn from a longitudinal family-based prevention study (N = 463; Ncontrol = 224; 48.8% girls; 45.1% White; 30.2% Black; 12.7% Hispanic/Latino, 10.4% biracial; 0.2% Native American). Participants were recruited from US-based Women, Infants, and Children Nutritional Supplement programs. A risk tolerance PRS was created from a genome-wide association study. We created a robust measure capturing additive effects of 22 conventional measures of a risk of antisocial behavior assessed at child age 2 (before intervention). A latent variable capturing antisocial behavior (ages 10.5-16) was created. After accounting for intervention status and the conventional risk index, the risk tolerance PRS predicted independent variance in antisocial behavior. A PRS-by-conventional risk interaction showed that the conventional risk measure only predicted antisocial behavior at high levels of the PRS. Thus, the risk tolerance PRS provides unique predictive information above conventional screening tools and, when combined with them, identified a higher-risk subgroup of children. Integrating PRSs could facilitate risk identification and, ultimately, prevention screening, particularly in settings unable to serve all individuals in need.

Duration of Breastfeeding and Supportive Paternal Caregiving in Early Childhood and the Potential Mediating Function of Maternal Caregiving

OBJECTIVE

Supportive paternal caregiving is influenced by contextual factors, including maternal caregiving behaviors. Although longer periods of breastfeeding have been found to be associated with higher levels of maternal supportive parenting, it remains unknown whether the benefits of breastfeeding also extend to fathers' supportive caregiving. This study tested the indirect relation between the duration of breastfeeding and paternal supportive parenting through maternal supportive parenting.

METHODS

Participating families (N = 623) were from the Behavior Outlook Norwegian Developmental Study, a population-based longitudinal study in Southeast Norway. Path analysis was used to test associations between the duration of breastfeeding in the first year (parent report) and paternal supportive parenting (observed, 36 months), as potentially mediated by maternal supportive parenting (observed, 24 months).

RESULTS

After controlling for sociodemographic and birth factors, a longer duration of breastfeeding was indirectly associated with higher levels of observed paternal supportive parenting through maternal supportive parenting.

CONCLUSION

The current findings suggest that the longer breastfeeding duration during the first year of life (i.e., infancy) might have important implications for both maternal and paternal supportive parenting in toddlerhood.

Developmental trajectories of behavioral inhibition from infancy to age seven: The role of genetic and environmental risk for psychopathology

The present study leveraged data from a longitudinal adoption study of 361 families recruited between 2003 and 2010 in the United States. We investigated how psychopathology symptoms in birth parents (BP; M_age  = 24.1 years; 50.5-62.9% completed high school) and adoptive parents (AP; M_age  = 37.8 years; 80.9% completed college; 94% mother-father couples) influenced children's behavioral inhibition (BI) trajectories. We used latent growth models of observed BI at 18 and 27 months, and 4.5 and 7 years in a sample of adopted children (Female = 42%, White = 57%, Black = 11%, Multi-racial = 21%, Latinx = 9%). BI generally decreased over time, yet there was substantial variability in these trajectories. Neither BP nor AP psychopathology symptoms independently predicted systematic differences in BI trajectories. Instead, we found that AP internalizing symptoms moderated the effects of BP psychopathology on trajectories of BI, indicating a gene by environment interaction.

Promoting Cognitive Stimulation in Parents Across Infancy and Toddlerhood: A Randomized Clinical Trial

OBJECTIVE

To test the impact of the fully integrated Smart Beginnings model on parental support of cognitive stimulation from 6 to 24 months across infancy and toddlerhood.

STUDY DESIGN

This was a single-blind, 2-site randomized clinical trial of the Smart Beginnings intervention. Enrollment took place at birth in postpartum units of hospitals in New York City and Pittsburgh, Pennsylvania, with a consecutive sample of 403 mother-infant dyads. Smart Beginnings combines a Video Interaction Project-14-session universal primary prevention program delivered in the pediatric clinic at the time of well-child visits birth-36 months-with potential for Family Check-Up-3-4 sessions targeted secondary prevention home-visiting program. The principal outcome was parental support of cognitive stimulation assessed via parent survey and video-recorded observations of parent-child interactions. Ordinary least squares and mixed effects regressions were conducted.

RESULTS

Families were mostly Black/African-American (50%) or Latinx (42%); all were Medicaid eligible (100%). Smart Beginnings significantly promoted cognitive stimulation during infancy and toddlerhood for most survey outcomes across time, including StimQ common total (effect size [ES] = 0.25, P = .01) and READ Quantity (ES = .19, P = .04) and Quality (ES = .30, P = .001). For the observations, the impact of Smart Beginnings varied by time, with significant impacts at 6 (ES = 0.37-.40, P < .001) and 24 (ES = 0.27-.30, P < .001) months, but not 18 months.

CONCLUSIONS

Smart Beginnings positively promotes cognitive stimulation from infancy through toddlerhood using the integrated model. This study adds to the body of research showing preventive interventions in pediatric primary care and home visiting can support early relational health including parental support of cognitive stimulation.

TRIAL REGISTRATION

NCT02459327.

Compensatory effects of maternal and paternal supportive parenting in early childhood on children's school-age adjustment

Both maternal and paternal supportive parenting (i.e., sensitivity, warmth, stimulation, and engagement) across early childhood have been found to be associated with multiple domains of children's positive socioemotional functioning. However, few studies have considered how maternal and paternal supportive parenting may interact to impact child development. Thus, the present study assessed direct and moderated longitudinal relations between maternal and paternal supportive parenting in toddlerhood (24 and 36 months, respectively) and fathers' and teachers' reports of children's socioemotional and behavioral adjustment in first grade. Data were drawn from a large, sample of Norwegian parents and children (N = 455, 51% female, 49% male, 10% endorsed financial strain, 75% of fathers and 86% of mothers born in Norway). After controlling for child temperamental activity level and soothability in infancy, path analysis revealed that higher paternal supportive parenting was associated with fewer symptoms of father-reported child hyperactivity/impulsivity in first grade. In addition, a significant interaction between maternal and paternal supportive parenting was evident for three out of the four assessed outcomes (per both father- and teacher-reports): externalizing problems, hyperactivity/impulsivity symptoms, and social skills. Simple slope analyses revealed a negative relation between parental supportive parenting and children's externalizing (father-reported) and hyperactivity/impulsivity problems (father- and teacher-reported) when the child's other parent engaged in low levels of supportive parenting. Similarly, paternal supportive parenting was positively associated with children's social skills (father-report) when mothers engaged in low levels of supportive parenting. Results are discussed with implications for including both mothers and fathers in early childhood research, intervention, and social policy. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Family processes and structure: Longitudinal influences on adolescent disruptive and internalizing behaviors

OBJECTIVE

The present study revisits the assumption in American culture, based in "family privilege," that children fare better in two-parent households by longitudinally examining associations between family structure, process, and adolescent behavior.

BACKGROUND

Societal assumptions and cross-sectional research suggest that there is a difference in child adjustment across varying family structures. Relatedly, the family process literature emphasizes the importance of parent-child relationship quality in addition to family structure on child adjustment.

METHOD

We utilized a longitudinal, prospective design that assessed family structures on nine occasions covering a 12-year period beginning when the target child was 2 years of age for a large (N = 714), ethnically and racially diverse sample of low-income families. We examined the relation between self-reported, teacher-reported, and primary caregiver-reported adolescent disruptive and internalizing problem behavior across family structures and parent-child relationship quality.

RESULTS

Across seven identified family structures, adolescent behavior did not differ after accounting for middle-childhood adjustment and relevant contextual factors. However, consistent with family process models of child adjustment, positive parent-child relationship quality predicted lower rates of adolescent maladaptive behavior.

CONCLUSION

These findings serve to combat stigma related to family structures that deviate from married parents raising their children and highlight the need for interventions designed to foster positive parent-child relationships.

IMPLICATIONS

Policy makers and practitioners should aim to support efforts to foster positive parent-child relationships across types of family structures and refrain from promoting or discouraging the formations of specific family structure types.

Substance Use Screening and Prevention for Adolescents in Pediatric Primary Care: A Randomized Clinical Trial using the Family Check-Up

This study evaluated acceptability, engagement in prevention, and efficacy of a primary care screening-and-referral-to-prevention program to reduce substance use in early adolescence. Screening tools were the Youth Risk Index and Transmissible Liability Index and prevention consisted of the Family Check-Up (FCU). Three hundred sixty-one 10- to 13-year-olds from low resource neighborhoods (85.9% African American; 52.4% female) screened "at risk" during primary care visits and were randomized to the FCU (n = 123) or usual care (n = 238). Screening was acceptable to parents and youths: nearly 95% of each rated it as important, about 90% of each were happy with or did not mind it, and only 2.4% of parents did not want their child to be screened at their next check-up. Of parents who had a chance to receive the FCU (or waitlist-control), 87.5% followed through with researchers while 93.5% who were offered FCU engaged in it. FCU efficacy primarily involved interactions such that youth with greater risk at baseline experienced larger benefits. At 12-month follow-up, FCU was associated with 11% reduced risk of initiating a new substance per substance that had been initiated before baseline; greater reductions in tolerance of deviance among those with higher tolerance of deviance at baseline; and a main effect of reduced anxiety, but no effect for conduct problems. Pediatric well-child check-up screening can identify high-risk youth before, or in the initial stages of, problematic SU; engage families in a preventive intervention; and reduce rates of substance use and related risk factors.

Examining Parental Monitoring, Neighborhood Peer Anti-social Behavior, and Neighborhood Social Cohesion and Control as a Pathway to Adolescent Substance Use

Adolescence is a critical developmental period in which substance use can have long-term adverse effects. Structural ecosystem theory (SET) argues that community contexts may support or undermine the family's ability to protect youth from substance use. Specific parenting attributes (e.g., providing structure, monitoring) have consistently been linked to youth substance use. However, less is known about how community factors may be influencing substance use through family and peer dynamics during adolescence. To address this gap, the current study uses five waves (ages 10-17) of data, collected as part of the Pitt Mother and Child Project (N = 228 low-income boys and their parents). This data are used to test a path model that investigates the relationship between neighborhood disadvantage (at age 10) and adolescent boys substance use (at age 17) through parental perceptions of neighborhood process (age 11), parents' perceptions of monitoring (age 12) and affiliation with anti-social neighborhood peers/best friends (age 15). This study finds support for the relationship between neighborhood disadvantage in late childhood and substance use at age 17 through parental perceptions of neighborhood cohesion, parental monitoring at age 12, and the youths' association with neighborhood best friends and marijuana use, but limited support for the indirect effect. The findings of this study partially support the assertion that neighborhood factors influence adolescent boys marijuana use by affecting other relationships within their ecological systems, suggesting that more research is needed in this area.

Family interactions in toddlerhood influence social competence in preschool age: Accounting for genetic and prenatal influences

Identification of early promotive and risk factors for social competence is important for fostering children's successful social development; particularly given social competence is essential for children's later academic and psychological well-being. While research suggests that the early parent-child relationship, genetics, and prenatal influences are associated with social competence, there is less research considering how these factors may operate together to shape children's social competence in early childhood. Using a genetically informed sample from the Early Growth and Development Study (N = 561), we examined multiple levels of influence (i.e., genetic, prenatal, parenting, and child characteristics) on children's social competence at 4.5 years old. Results from structural equation models showed adoptive mother overreactivity at 18 months was positively associated with child dysregulation at 27 months, which, in turn, was associated with lower levels of social competence at 4.5 years. Also, child reactivity at 18 months was independently associated with higher levels of adoptive mother overreactivity at 27 months, which, in turn, was associated with lower levels of social competence at 4.5 years. Finally, we found an evocative effect on adoptive fathers' overreactivity at 18 months such that prenatal birth mother distress was negatively associated with adoptive fathers' overreactivity at 18 months. Overall, this study found evidence for genetic influences, and bidirectional associations between parent and child in toddlerhood that are related to lower levels of social competence when children were 4.5 years old. We also found that the prenatal environment was associated with parenting, but not with child behavior directly. This study's ability to simultaneously examine multiple domains of influence helps provide a more comprehensive picture of important mechanisms and developmental periods for children's early social competence.

Cannabis, connectivity, and coming of age: Associations between cannabis use and anterior cingulate cortex connectivity during the transition to adulthood

Cannabis use is common among adolescents and emerging adults and is associated with significant adverse consequences for a subset of users. Rates of use peak between the ages of 18-25, yet the neurobiological consequences for neural systems that are actively developing during this time remain poorly understood. In particular, cannabis exposure may interfere with adaptive development of white matter pathways underlying connectivity of the anterior cingulate cortex, including the cingulum and anterior thalamic radiations (ATR). The current study examined the association between cannabis use during adolescence and emerging adulthood and white matter microstructure of the cingulum and ATR among 158 male subjects enrolled in the Pitt Mother and Child Project, a prospective, longitudinal study of risk and resilience among men of low socioeconomic status. Participants were recruited in infancy, completed follow-up assessments throughout childhood and adolescence, and underwent diffusion imaging at ages 20 and 22. At age 20, moderate cannabis use across adolescence (age 12-19) was associated with higher fractional anisotropy (FA) of the cingulum and ATR, relative to both minimal and heavy adolescent use. Longitudinally, moderate and heavy extended cannabis use (age 12-21) was associated with reduced positive change in FA in the cingulum from age 20 to 22, relative to minimal use. These longitudinal results suggest that cannabis exposure may delay cingulum maturation during the transition to adulthood and potentially impact individuals' functioning later in development.

The Potential of Children's Rearing Environment to Overcome Genetic Propensity for Low Reading Achievement

Genetic studies show that children's reading achievement is in part genetically influenced, and intervention studies show that reading achievement can be increased by environmental interventions. However, correlational and mean-level analytic strategies are rarely integrated into achievement research, potentially leading to misinterpretation of results. The parent-offspring adoption design offers a novel opportunity to examine the independent and joint roles of genetic and rearing environmental contributions. The sample included 344 adopted children in first grade and their biological and adoptive parents. Results indicated that adoptees' reading scores were correlated with their biological parents' scores, but not with their adoptive parents' scores, suggesting genetic influences. In addition, examination of mean scores indicated that adoptees' scores were significantly greater than their biological parents' (p's < .001) for all subtests, suggesting promotive effects of the rearing environment. This pattern was present even when biological parents scored >1 standard deviation below the biological parent mean on achievement.

Housing Insecurity, Housing Conditions, and Breastfeeding Behaviors for Medicaid-Eligible Families in Urban Settings

BACKGROUND

Research exploring associations between exposure to social determinants of health and breastfeeding is needed to identify breastfeeding barriers. Housing insecurity and household conditions (chaos and crowding) may affect breastfeeding by increasing maternal stress and discomfort and decreasing time available to breastfeed.

RESEARCH AIM

We aimed to examine the relationships between housing insecurity, breastfeeding exclusivity intention during the early postnatal period, and breastfeeding exclusivity at 6 months postpartum among a sample "at risk" for suboptimal breastfeeding rates.

METHODS

This study is a secondary data analysis of a longitudinal study at two time periods. Data were collected from English- and Spanish-speaking, Medicaid-eligible mother-infant dyads (N = 361) at near-birth and child aged 6 months, in New York City and Pittsburgh. Structural equation modeling was used to examine direct and indirect effects of housing insecurity on breastfeeding exclusivity at child aged 6 months.

RESULTS

The path model showed that experiencing more markers of housing insecurity (i.e., foreclosure/eviction threat, history of homelessness, late rent) was predictive of significantly lower breastfeeding exclusivity at 6 months. This was partially mediated through less exclusive breastfeeding intention during the early postnatal period. Greater household crowding was associated with 6-month breastfeeding exclusivity when mediated by intention. Household crowding had differential effects by study site and participant race/ethnicity.

CONCLUSION

Refinement of housing insecurity as a multi-dimensional construct can lead to the development of standardized data collection instruments, inform future methodological decisions in research addressing social determinants of health, and can inform the development of responsive individual- and structural-level interventions.The data used in this study were collected as part of the SMART Beginnings Randomized Controlled Trial (NCT02459327 registered at ClinicalTrials.gov).

Collateral benefits from a school-readiness intervention on breastfeeding: A cross-domain impact evaluation

This study evaluated the collateral, or unanticipated, impacts of Smart Beginnings (SB), a two-site, tiered intervention designed to promote responsive parenting and school readiness, on breastfeeding intensity in a low-income sample. Impact analyses for the SB intervention were conducted using an intent-to-treat design leveraging a two-arm random assignment structure. Mothers assigned to the SB intervention group were more than three times more likely to give breastmilk as the only milk source at infant age 6 months than mothers assigned to the control group at one site, an effect not evident at the other study site. As development and growth are the two most salient domains of child health, understanding how interventions impact subsequent parenting practices across both domains is critical to address long-term economic and racial/ethnic disparities. Implications of the findings are discussed for improving the efficacy of interventions based on paediatric primary care.

Racial Discrimination Experienced by Black Parents: Enduring Mental Health Consequences for Adolescent Youth

OBJECTIVE

Despite evidence linking experiences of racial discrimination by Black parents and problem behaviors in youth, little is known about the mechanisms that explain this link. To elucidate these developmental pathways, a serial mediation model was tested, in which Black parents' experiences of racial discrimination were hypothesized to predict increased parental depression and parent-child conflict in early adolescence, which in turn would be associated with youth depression, anxiety, and conduct problems in early to mid-adolescence.

METHOD

Participants were 252 Black parent-child dyads. Youth (56% female) were on average 11.98 years old at study entry (wave 1). Parents and youth completed questionnaires during a home-based assessment at wave 1 and were assessed again 1 and 2 years later (waves 2 and 3).

RESULTS

Black parents' experiences of racial discrimination at wave 1 were linked to higher levels of parent-child conflict at wave 2 (0.20; 95% CI [0.05, 0.33]), which in turn predicted greater youth-reported depression at wave 3 (0.30; 95% CI [0.15, 0.47]). There was a significant indirect effect of racial discrimination on youth-reported depression via parent-child conflict (indirect effect: 0.06, 95% CI [0.02, 0.10]). Findings were replicated across multiple outcomes (ie, depression, anxiety, conduct problems) and multiple informants (ie, youth report, parent report). There was no evidence to support a serial mediation model via parental depression and then parent-child conflict.

CONCLUSION

This study identified a developmental pathway from Black parents' experiences of racial discrimination to adolescent problem behaviors via parent-child conflict. Findings may inform interventions aimed at promoting resilience in parents and youth faced with pervasive racism.

CLINICAL TRIAL REGISTRATION INFORMATION

Substance Use Screening and Prevention for Adolescents in Pediatric Primary Care (SKY); https://clinicaltrials.gov/; NCT03074877.

Prenatal programming of developmental trajectories for obesity risk and early pubertal timing

The thrifty phenotype and fetal overnutrition hypotheses are two developmental hypotheses that originated from the developmental origins of health and disease (DOHaD) perspective. The DOHaD posits that exposures experienced prenatally and early in life may influence health outcomes through altering form and function of internal organs related to metabolic processes. Obesity risk and early pubertal timing might be influenced by similar mechanisms. The thrifty phenotype hypothesis is primarily characterized by experiencing a deprivation of nutrients during gestation paired with an energy rich postnatal environment. The fetal overnutrition hypothesis says that obesity experienced prenatally will be associated with increased lifetime risk of obesity in the offspring. Both hypotheses were tested by examining developmental pathways from genetic and prenatal risk through early growth trajectories (birth to 7 years) to pubertal timing at age 11 years. Participants included 361 children adopted at birth (57% male; 57% non-Hispanic White, 11% Black, 9% Hispanic; adoptive family income Mdn = $70,000-$100,000, birth family income Mdn = < $15,000). Associations between boys' childhood body mass index (BMI) and pubertal timing were confounded by genetics, prenatal risk, and early growth. The thrifty phenotype hypothesis was partially supported for boys' childhood BMI (at ages 4 to 7 years). Both hypotheses were partially supported for girls' childhood BMI but not pubertal timing. A novel Gene × Prenatal Risk interaction showed that genetic risk predicted girls' childhood BMI most strongly at adequate compared with at excessive levels of gestational weight gain. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

An Observational Approach to Examining White Parents' Racial Socialization Practices With Adolescent Youth

The racial socialization (RS) strategies used by White parents have received limited empirical attention. Thus, the current study examined the frequency and content of White parents' RS messages to their White children during an observed parent-child discussion task on discrimination when youth were 14 years old. Participants were 243 White caregivers and their adolescent children (47.7% female). Overall, parents provided few RS messages, but when they did, they often relayed egalitarian messages or messages minimizing racism. Other types of RS strategies that emerged included acknowledging racism targeting people of color, discriminatory attitudes, and false beliefs in reverse racism.

Developmental profiles of child behavior problems from 18 months to 8 years: The protective effects of structured parenting vary by genetic risk

Some children are more affected by specific family environments than others, as a function of differences in their genetic make-up. However, longitudinal studies of genetic moderation of parenting effects during early childhood have not been conducted. We examined developmental profiles of child behavior problems between 18 months and age 8 in a longitudinal parent-offspring sample of 361 adopted children. In toddlerhood (18 months), observed structured parenting indexed parental guidance in service of task goals. Biological parent psychopathology served as an index of genetic influences on children's behavior problems. Four profiles of child behavior problems were identified: low stable (11%), average stable (50%), higher stable (29%), and high increasing (11%). A multinominal logistic regression analysis indicated a genetically moderated effect of structured parenting, such that for children whose biological mother had higher psychopathology, the odds of the child being in the low stable group increased as structured parenting increased. Conversely, for children whose biological mother had lower psychopathology, the odds of being in the low stable group was reduced when structured parenting increased. Results suggest that increasing structured parenting is an effective strategy for children at higher genetic risk for psychopathology, but may be detrimental for those at lower genetic risk.

Individual differences in symptoms of maternal depression and associations with parenting behavior

Links between global levels of maternal depressive symptoms and parenting behavior in early childhood are well established. However, depression is a heterogeneous disorder and little is known about how individual differences in depression symptoms may be differentially associated with different types of parenting behavior. We aimed to uncover nuance in the relationship between depression and parenting behavior by examining individual differences in symptoms of maternal depression and associations with parenting behavior with 2- and 3-year-old children. Participants included 714 diverse, low-income mothers and their 2-year-old children. Maternal depression symptoms were self-reported at child age 2. Three domains of parenting behavior (harsh, positive, and disengaged) were coded from mother-child interactions at ages 2 and 3. Individual differences in maternal depressive symptoms at child age 2 comprised five profiles: low, interpersonal rejection, moderate, high depressed affect and physical, and severe. Women with the high depressed affect and physical profile demonstrated the greatest risk for parenting challenges with higher levels of harsh parenting at child age 2 compared to all other profiles and higher levels of disengaged parenting at child age 3 compared to the low, moderate, and severe profiles. Unexpectedly, positive parenting did not differ by maternal depression profile at either age. There is wide heterogeneity in symptoms of depression among mothers of 2-year-old children that is clinically relevant for different dimensions of parenting. Physical and depressed affect symptoms in particular may present risk for harsh parenting. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Examining Research Domain Criteria (RDoC) constructs for anger expression and regulation in toddlers

The present study is focused on anger expression and regulation within the National Institute of Mental Health (NIMH) Research Domain Criteria (RDoC) construct of Frustrative Nonreward. Although previous studies have examined associations between child anger regulation and expression, these studies do not directly address the dynamic processes involved in Frustrative Nonreward using microlongitudinal methods. The current study used data from 561 adopted children, their adoptive parents, and birth parents and aimed to address gaps in the literature by examining: (a) temporal associations between anger expression during a frustrating situation, and behaviors thought to regulate emotions (e.g., attempt-to-escape, support-seeking, distraction, and focus-on-restraint) on a microlongitudinal scale during an arm restraint task assessed at 27 months; (b) birth parent externalizing problems and overreactive parenting by adoptive parents as predictors of child anger expression and moderators of the moment-to-moment associations estimated in Step 1; and (c) longitudinal associations (linear vs. quadratic) between anger expressions and externalizing behaviors at 4.5 years. Findings indicated that children's attempt-to-escape and support-seeking predicted an increase in anger expression in the following 3-s interval, whereas distraction and focus-on-restraint were not associated with changes in anger expression. Furthermore, we found that birth parents' externalizing problems were significantly associated with child anger expression, suggesting heritable influences. Anger expression showed a U-shaped longitudinal association with paternal report of externalizing behaviors at 4.5 years. Taken together, the findings emphasize the significance of integrating microlongitudinal analysis approaches into the RDoC framework, helping to advance our understanding of dynamic processes underlying reactions to Frustrative Nonreward. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Indirect Associations between Middle-Childhood Externalizing Behaviors and Adolescent Substance Use through Late-Childhood Exposure to Violence

Longitudinal research to understand individual risk factors in childhood associated with exposure to violence and substance use is needed to inform prevention efforts. The present study tested indirect associations between age 8.5 externalizing behaviors and age 16 substance use through age 9.5 violence victimization and witnessing. Participants were 650 racially diverse (48.6% European American, 28.1% African American, 13.3% multiracial, and 10.0% other), predominantly socioeconomically disadvantaged youth (49% female). Externalizing behaviors were associated with higher levels of violence victimization and witnessing. The indirect path from externalizing behaviors to substance use was significant through victimization but not witnessing violence. Interventions aimed at reducing early externalizing behaviors may reduce risk for violence victimization, which may, in turn, reduce risk for adolescent substance use.

Predictors of television at bedtime and associations with toddler sleep and behavior in a medicaid-eligible, racial/ethnic minority sample

This study examined predictors of TV use at bedtime and associations with toddlers' sleep and behavior using data from the Smart Beginnings study with 403 Medicaid-eligible, racial/ethnic minority participants from two cities in the United States. We first estimated predictors of TV use at bedtime at 18 months. We then examined whether TV at bedtime was associated with concurrent parent-report of nighttime sleep duration and quality, and later problem behavior at 24 months. Results showed that around half of the sample reported using TV at bedtime with their toddlers, and particularly first-time mothers and those receiving public assistance. We also found that use of TV at bedtime was related to concurrent sleep issues and increases in later problem behavior. Mediational path analyses revealed that TV at bedtime affected behavior via sleep quality. Despite the heterogeneity within this Medicaid-eligible sample, the results underscore the universally harmful effects of TV use at bedtime and lend support for structuring nighttime routines for toddlers to promote better sleep and behavioral outcomes.

Parenting in the Context of the Child: Genetic and Social Processes

The focus on the role of parenting in child development has a long-standing history. When measures of parenting precede changes in child development, researchers typically infer a causal role of parenting practices and attitudes on child development. However, this research is usually conducted with parents raising their own biological offspring. Such research designs cannot account for the effects of genes that are common to parents and children, nor for genetically influenced traits in children that influence how they are parented and how parenting affects them. The aim of this monograph is to provide a clearer view of parenting by synthesizing findings from the Early Growth and Development Study (EGDS). EGDS is a longitudinal study of adopted children, their birth parents, and their rearing parents studied across infancy and childhood. Families (N = 561) were recruited in the United States through adoption agencies between 2000 and 2010. Data collection began when adoptees were 9 months old (males = 57.2%; White 54.5%, Black 13.2%, Hispanic/Latinx 13.4%, Multiracial 17.8%, other 1.1%). The median child age at adoption placement was 2 days (M = 5.58, SD = 11.32). Adoptive parents were predominantly in their 30s, White, and coming from upper-middle- or upper-class backgrounds with high educational attainment (a mode at 4-year college or graduate degree). Most adoptive parents were heterosexual couples, and were married at the beginning of the project. The birth parent sample was more racially and ethnically diverse, but the majority (70%) were White. At the beginning of the study, most birth mothers and fathers were in their 20s, with a mode of educational attainment at high school degree, and few of them were married. We have been following these family members over time, assessing their genetic influences, prenatal environment, rearing environment, and child development. Controlling for effects of genes common to parents and children, we confirmed some previously reported associations between parenting, parent psychopathology, and marital adjustment in relation to child problematic and prosocial behavior. We also observed effects of children's heritable characteristics, characteristics thought to be transmitted from parent to child by genetic means, on their parents and how those effects contributed to subsequent child development. For example, we found that genetically influenced child impulsivity and social withdrawal both elicited harsh parenting, whereas a genetically influenced sunny disposition elicited parental warmth. We found numerous instances of children's genetically influenced characteristics that enhanced positive parental influences on child development or that protected them from harsh parenting. Integrating our findings, we propose a new, genetically informed process model of parenting. We posit that parents implicitly or explicitly detect genetically influenced liabilities and assets in their children. We also suggest future research into factors such as marital adjustment, that favor parents responding with appropriate protection or enhancement. Our findings illustrate a productive use of genetic information in prevention research: helping parents respond effectively to a profile of child strengths and challenges rather than using genetic information simply to identify some children unresponsive to current preventive interventions.

Early manifestations of intellectual performance: Evidence that genetic effects on later academic test performance are mediated through verbal performance in early childhood

Intellectual performance is highly heritable and robustly predicts lifelong health and success but the earliest manifestations of genetic effects on this asset are not well understood. This study examined whether early executive function (EF) or verbal performance mediate genetic influences on subsequent intellectual performance, in 561 U.S.-based adoptees (57% male) and their birth and adoptive parents (70% and 92% White, 13% and 4% African American, 7% and 2% Latinx, respectively), administered measures in 2003-2017. Genetic influences on children's academic performance at 7 years were mediated by verbal performance at 4.5 years (β = .22, 95% CI [0.08, 0.35], p = .002) and not via EF, indicating that verbal performance is an early manifestation of genetic propensity for intellectual performance.

Systemic Inflammation Contributes to the Association Between Childhood Socioeconomic Disadvantage and Midlife Cardiometabolic Risk

BACKGROUND

Childhood socioeconomic disadvantage is associated with increased risk for chronic inflammation and cardiometabolic disease at midlife.

PURPOSE

As it is presently unknown whether inflammation mediates the relationship between childhood socioeconomic status (SES) and adulthood cardiometabolic risk, we investigated associations between retrospectively reported childhood SES, circulating levels of inflammatory markers, and a latent construct of cardiometabolic risk in midlife adults.

METHODS

Participants were 1,359 healthy adults aged 30-54 (Adult Health and Behavior I&II; 52% women, 17% Black) who retrospectively reported childhood SES (parental education, occupational grade). Measures included plasma interleukin (IL)-6, C-reactive protein (CRP), and cardiometabolic risk factors. Structural equation modeling was conducted, with cardiometabolic risk modeled as a second-order latent variable with adiposity, blood lipids, glucose control, and blood pressure as first-order components.

RESULTS

Lower childhood SES was associated with greater risk for cardiometabolic disease at midlife (β = -0.08, CI[-0.04, -0.01], p = .01) in models adjusted for demographics, but this association was attenuated in models that adjusted for adulthood SES and health behaviors. In fully-adjusted models, the relationship between lower childhood SES and adult cardiometabolic risk was partially explained by higher circulating levels of CRP (β = -0.05, CI[-0.02, -0.01], p = .001), but not by IL-6. In an exploratory model, lower adulthood SES was also found to independently contribute to the association between childhood SES and adult cardiometabolic risk (β = -0.02, CI[-0.01, -0.001], p = .02).

CONCLUSIONS

The current study provides initial evidence that systemic inflammation may contribute to childhood socioeconomic disparities in cardiometabolic risk in midlife. Future work would benefit from prospective investigation of these relationships.

Trajectories of early childhood family instability and the development of externalizing behaviors from middle childhood to adolescence: A prospective study of at-risk families

This study examined associations between trajectories of family instability across early childhood and trajectories of externalizing behaviors from middle childhood to adolescence. Growth mixture models were fit to annual caregiver reports of instability from child ages 2-5 (N = 731; 49% girls, 50% White). A curve of factors model was fit to externalizing behaviors from child ages 7.5-14. Chronic, elevated instability across early childhood predicted elevated externalizing behaviors from middle childhood to adolescence. Data collection spanned from 2002 to 2017. Increasing or declining levels of instability predicted elevated externalizing behaviors in middle to late childhood, but not in adolescence. Caregiver depressive symptoms mediated the association between instability and the externalizing behavior intercept. Intervening on chronic instability may reduce child externalizing problems.

Reexamining the association between the interparental relationship and parent-child interactions: Incorporating heritable influences

Family systems research has identified two key processes (spillover and compensatory), linking interparental relationship quality to the parent-child relationship. However, previous research has focused on the parent as the sole initiator and had not often considered the role of the child in these processes. The present study adds to the literature by leveraging a genetically informed design to examine possible child evocative effects on spillover and compensatory processes. Participants were from a longitudinal parent-offspring adoption sample of 361 linked sets of adoptive parents of an adopted child (57% male), and the child's birth parents. Adoptive parents reported on child pleasure and anger at 18 months and the interparental relationship at 27 months. Parent-child interactions were observed at child age 6 years, and heritable influences were assessed via birth mother self-report at 5 months. Our results indicated a dampening effect where higher interparental warmth at child age 27 months was associated with less adoptive mother-child coercion at child age 6 years, and a compensatory effect where higher interparental conflict was associated with more adoptive father-child positive engagement. Moreover, our results indicated child-driven effects via both genetic and environmental pathways. Specifically, higher levels of birth mother negative affect (heritable characteristic) were associated with lower levels of adoptive father-child coercion. Also, child anger was positively associated with interparental conflict, and child pleasure was positively associated with interparental warmth. These findings support findings from the family literature with evidence of compensatory mechanisms, while also highlighting the active role children play in shaping family interactions. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Relations between Early Childhood Paternal Depression and Preschool- and School-age Psychosocial Functioning

Objective: The present study used a longitudinal design to examine associations between paternal depressive symptoms in toddlerhood and children's psychosocial adjustment during the preschool and school-age periods. Maternal depressive symptoms and intervention status were tested as moderators of associations between paternal depressive symptoms and child maladjustment.Method: The sample (n = 264, 48% female, 62% White, 14% Black, 14% bi-racial, 11% another racial group, and 86% non-Hispanic/Latinx) represented a subsample of families from the Early Steps Multisite Study, a clinical randomized trial testing the effectiveness of the Family Check-Up among low-income families using Women, Infants, and Children Nutritional Supplement Services in three communities varied in urbanicity. Fathers and mothers reported their levels of depressive symptoms at child age 2, primary caregivers (mostly mothers) contributed measures of child adjustment at ages 5, 8.5, and 9.5, and teachers completed questionnaires about child adjustment at ages 8.5 and 9.5.Results: Direct relations were found between paternal depressive symptoms and primary caregivers' reports of children's preschool and school-age internalizing problems. Furthermore, higher levels of paternal depression were associated with higher levels of children's later adjustment problems at preschool-age when maternal depressive symptoms were mild or higher. The Family Check-Up attenuated relations between paternal depressive symptoms and children's internalizing problems at school-age.Conclusions: These findings have important implications for future research on preventing children's early-emerging problem behaviors at home, suggesting that addressing paternal depressive symptoms in early childhood may be an important intervention target, especially in the context of maternal depression.

Late Embryogenesis Abundant (LEA)5 Regulates Translation in Mitochondria and Chloroplasts to Enhance Growth and Stress Tolerance

The late embryogenesis abundant (LEA)5 protein is predominantly expressed in Arabidopsis leaves in the dark, the levels of LEA5 transcripts decreasing rapidly upon illumination. LEA5 is important in plant responses to environmental stresses but the mechanisms involved have not been elucidated. We therefore explored LEA5 functions in Arabidopsis mutants (lea5) and transgenic Arabidopsis plants constitutively expressing LEA5 (OEX 2-5), as well as in transgenic barley lines expressing the Arabidopsis LEA5 gene. The OEX 2-5 plants grew better than controls and lea5 mutants in the presence of the prooxidants methyl viologen and menadione. Confocal microscopy of Arabidopsis mesophyll protoplasts expressing a LEA5-YFP fusion protein demonstrated that LEA5 could be localized to chloroplasts as well as mitochondria in Arabidopsis protoplasts. Tandem affinity purification (TAP) analysis revealed LEA5 interacts with the chloroplast DEAD-box ATP-dependent RNA helicase 22 (RH22) in Arabidopsis cells. Split YFP analysis confirmed the interaction between RH22 and LEA5 in chloroplasts. The abundance of translated protein products in chloroplasts was decreased in transgenic Arabidopsis plants and increased in lea5 knockout mutants. Conversely, the abundance of translated mitochondrial protein products was increased in OEX 2-5 plants and decreased in lea5 mutants. Mitochondrial electron transport rates were higher in the OEX 2-5 plants than the wild type. The transformed barley lines expressing the Arabidopsis LEA5 had increased seed yields, but they showed a greater drought-induced inhibition of photosynthesis than controls. Taken together, these data demonstrate that LEA5 regulates organellar translation, in order to enhance respiration relative to photosynthesis in response to stress.

Extracurricular involvement in the school-age period and adolescent problem behavior among low-income youth

OBJECTIVE

The present study tested the protective role of youth's school-age extracurricular involvement and multiple informants' reports of adolescent internalizing and externalizing problems in a sample of youth from low-income households.

METHOD

Participating youth (n = 635, 49% female, 49% White, 28% Black/African American, 14% biracial, 8% other race, 13% Hispanic/Latinx) were drawn from the Early Steps Multisite Study. At ages 7.5, 8.5, and 9.5, primary caregivers reported the number of extracurricular activities for which youth participated (Parent Aftercare Survey). At ages 14 and 16, measures of internalizing and externalizing problems were collected from primary and alternate caregivers (Child Behavior Checklist) and target youth (Child Depression Inventory-Short Form, Multidimensional Anxiety Scale for Children, and Self-Report of Delinquency). At age 16, target youth also contributed measures of risky sexual behaviors and substance use (Youth Risk Behavior Survey). Teachers contributed measures of youth's internalizing and externalizing problems at age 14 (Teacher Report Form).

RESULTS

After accounting for the effects of multiple sociodemographic factors, initial levels of child problem behavior, and intervention group status, structural equation models revealed that school-age extracurricular involvement was inversely associated with latent factors representing adolescent externalizing, but not internalizing, problems at ages 14 (β = -.13, p < .01) and 16 (β = -.12, p = .02).

CONCLUSIONS

The present study suggests that low-income, school-age children's involvement in extracurricular activities serves a protective function in relation to adolescent externalizing problems. Future studies should assess underlying mechanisms and expand the scope of adolescent outcomes to include prosocial functioning. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

The role of child negative emotionality in parenting and child adjustment: Gene-environment interplay

BACKGROUND

Evocative gene-environment correlation (rGE) describes a process through which children's heritable characteristics influence their rearing environments. The current study examined whether heritable influences on parenting and children's behavioural outcomes operate through child negative emotionality.

METHOD

Using data from the Early Growth and Development Study, we examined associations among adoptive parent reports of child anger and sadness at 4.5 years, adoptive parents' hostile and warm parenting at 6 years and child behavioural problems and social competence at age 7. Birth parent temperament was included to test whether child effects on parents reflect evocative gene-environment correlation (rGE).

RESULTS

Child anger at 4.5 years evoked hostile parenting from adoptive parents at 6 years, which was subsequently related to child problem behaviours at 7 years. Evocative rGE effects were identified for adoptive parents' hostile parenting.

CONCLUSIONS

By employing a genetically informed design, we found that birth parent temperament was related to child negative emotionality. Adoptive parents were sensitive to child negative emotionality, and this sensitivity was linked to the child's later adjustment.

Examining reciprocal associations between parent depressive symptoms and child internalizing symptoms on subsequent psychiatric disorders: An adoption study

INTRODUCTION

The dynamic interplay between parent depressive symptoms and child internalizing behavior over time is not well understood.

METHODS

We used data from a prospective parent-offspring adoption design (N = 561) to examine associations between adoptive parent depressive symptoms and child internalizing behavior when children were ages 18 months, 27 months, 4.5 years, and 6 years, and subsequent child psychiatric disorder symptoms when children were between the ages of 6-8 years. Models also accounted for the contributions of birth parent psychopathology, birth mother depressive symptoms during pregnancy, and infant negative emotionality. Bidirectional associations between adoptive parent depressive symptoms and child internalizing behavior were examined using a random-intercept cross-lagged panel model.

RESULTS

There was evidence for associations between child internalizing behavior and adoptive parent depressive symptoms over time, with mothers' depressive symptoms being a more salient risk factor for child internalizing behavior than fathers'. We found one significant cross-lagged association from adoptive mother depressive symptoms at child age 18 months to child internalizing behavior at age 27 months. Infant negative emotionality (i.e., emotional liability) at age 9 months predicted both child internalizing behavior and adoptive parent depressive symptoms.

CONCLUSION

Results suggest that postnatal maternal depressive symptoms confer specific risks for child internalizing behaviors in toddlerhood and childhood and depressive symptoms in childhood.