Early childhood stress responses to psychosocial stressors: The state of the science

Mother-infant stress contagion? Effects of an acute maternal stressor on maternal caregiving behavior and infant cortisol and crying

BACKGROUND

Postpartum maternal distress has been associated with adverse infant outcomes. A potential pathway of how maternal distress affects infant outcomes could be alterations in maternal caregiving behavior. However, the associations between maternal distress, caregiving behavior, and infant outcomes have never been tested in a controlled experiment. This preregistered study utilized an experimental design to investigate the effects of an acute maternal stressor on infant cortisol and crying and the possible mediating role of maternal caregiving behavior.

METHODS

Mother-infant dyads (N = 91) participated in a lab visit at 8 weeks postpartum, where mothers were separated from their infants to either perform a Trier Social Stress Test (TSST) or a control task. The task was immediately followed by a mother-infant interaction to assess maternal caregiving behavior and infant cortisol and crying.

RESULTS

Our structural equation model found no differences between conditions (stressor/control) on maternal caregiving behavior and infant response to maternal stress. Secondary findings revealed that higher quality of maternal caregiving behavior was related to lower levels of infant crying and lower cortisol levels at the end of the visit, but not cortisol at reunion.

CONCLUSIONS

Our findings do not support the occurrence of mother-infant stress contagion in this experimental setting but do indicate a link between maternal caregiving behavior and infant behavioral and cortisol responses. Given the high prevalence of maternal mental health problems and their possible negative association with offspring development, further (experimental) research is needed to understand just how maternal postpartum distress affects young infants.

Patterns of stress-related change in salivary alpha-amylase and cortisol among young children: Associations with maternal psychosocial risk factors

Our understanding of associations between family-level risk factors and children's stress physiology is largely derived from studies that apply "mean-based" rather than "person-level" approaches. In this study, we employed group-based trajectory modeling, a person-centered approach, to identify children with similar patterns of stress-related sympathetic nervous system (SNS) and hypothalamic-pituitary-adrenal (HPA) axis activation, and explored associations between these patterns and maternal psychosocial risk. Participants were five-year-old children (N=147; 52 % female; 62 % Black/African American) and their mothers. Children's saliva was sampled four times during a series of emotional stressor tasks and later assayed for sAA and cortisol, indexing SNS and HPA activity, respectively. Mothers reported their depressive and anxiety symptoms, parenting stress, financial stress, and income. Results revealed two task-related patterns of change for sAA (Low-Stable vs. High-Increasing) and cortisol (Low-Stable vs. High-Decreasing) concentrations. Children from families with lower income were more likely to exhibit the High-Increasing SNS pattern, [OR=0.78, 95 % CI (0.64, 0.95)], and children of mothers reporting more anxiety symptoms [OR=1.06, 95 % CI (1.00, 1.12)] and more parenting stress [OR=1.04, 95 % CI (1.00, 1.07)] were more likely to show the High-Decreasing HPA pattern. Implications of this person-centered approach and findings for advancing our understanding of associations between family-level risk factors and children's stress physiology are discussed.

Validation of the Abbreviated PTSD Checklist-Civilian as a Traumatic Stress Screener for Parents of Children With Cancer

Background: Researchers and clinicians often use the six-item abbreviated Posttraumatic Stress Disorder Checklist-Civilian (PCL-6) for screening; however, the PCL-6 has not been validated for parents of children with cancer. A valid and reliable short screener like the PCL-6 would allow bedside and/or advanced practice nurses to quickly screen parents for traumatic stress and expedite referrals for support services. Method: This study used data collected during a multisite trial examining an intervention for children with cancer and their parents. This dataset included parental self-report measures of traumatic stress (PCL-6; Impact of Events Scale-Revised [IES-R]), mood disturbance (Profile of Mood States-Short Form [POMS-SF]), and wellbeing (Index of Wellbeing [IWB]). The sample included 136 parents of children (3-8 years old) undergoing cancer treatment at four hospitals. Analysis: For construct validity, we calculated Spearman's correlation coefficient using baseline scores of the PCL-6 with baseline scores for the IES-R, POMS-SF, and IWB. For internal consistency, we calculated Cronbach's alpha using the scores of each of the six items of the PCL-6 for all parent/caregiver participants at baseline. Results: Results indicate good convergent construct validity, reasonable divergent construct validity, and good internal consistency.

Interactive roles of preterm-birth and socioeconomic status in cortical thickness of language-related brain structures: Findings from the Adolescent Brain Cognitive Development (ABCD) study

Preterm-born (PTB) children are at an elevated risk for neurocognitive difficulties in general and language difficulties more specifically. Environmental factors such as socio-economic status (SES) play a key role for Term children's language development. SES has been shown to predict PTB children's behavioral developmental trajectories, sometimes surpassing its role for Term children. However, the role of SES in the neurocognitive basis of PTB children's language development remains uncharted. Here, we aimed to evaluate the role of SES in the neural basis of PTB children's language performance. Leveraging the Adolescent Brain Cognitive Development (ABCD) Study, the largest longitudinal study of adolescent brain development and behavior to date, we showed that prematurity status (PTB versus Term) and multiple aspects of SES additively predict variability in cortical thickness, which is in turn related to children's receptive vocabulary performance. We did not find evidence to support the differential role of environmental factors for PTB versus Term children, underscoring that environmental factors are significant contributors to development of both Term and PTB children. Taken together, our results suggest that the environmental factors influencing language development might exhibit similarities across the full spectrum of gestational age.

The effect of stress on the antibody response after vaccination in children aged 0-18 years: A systematic review

Stress has been associated with less effective vaccine responses in adults. This review aims to investigate the evidence for a similar association in children. A systematic review search was conducted in January 2021 in three databases: Medline, Embase and PsycInfo. An updated search of the Medline database was systematically conducted until the most recent update on September 25th, 2023, to ensure the inclusion of the most current research available. Keywords related to stress, vaccines and children were used, and a total of 7263 (+1528) studies were screened by two independent investigators. Six studies met the inclusion criteria for data extraction and analysis. For quality assessment of the studies, the risk of bias in non-randomized studies-of interventions (ROBINS-I) tool was applied. Most of the studies suggest a negative role of stress on vaccine responses. However, the scarcity of studies, lack of confirmatory studies, risk of bias and heterogeneity according to age, type of vaccine, measures of stress and vaccine responses prevent a clear conclusion. Future studies should emphasize the use of as strict study designs as possible, including well-defined stress metrics and thorough examination of both pre- and post-vaccination responses. Systematic review registration: Prospero CRD42021230490.

Shifting perspectives and transformative change: Parent perspectives of an active music engagement intervention for themselves and their child with cancer

BACKGROUND

Children with cancer (ages 3-8 years) and their parents experience significant, interrelated distress associated with cancer treatment. Active music engagement (AME) uses music-based play and shared music-making to mitigate this distress. To advance our understanding about how AME works and its essential features, we interviewed parents who received the AME intervention as part of a multi-site mechanistic trial. The purpose of this qualitative analysis was to describe parents' experiences of AME for themselves and their child and to better understand how the intervention worked to lower parent-child distress.

PROCEDURE

We conducted a total of 43 interviews with parents/caregivers, and purposively analyzed all interviews from underrepresented groups based on race/ethnicity and parent role. We used thematic analysis and achieved thematic redundancy after analyzing 28 interviews.

RESULTS

The following statement summarizes resulting themes: Music therapists skillfully use AME to create a safe and healthy space (Theme 1), where parents/children have transformative experiences (Theme 2) that lead to learning and enactment (Theme 3) of new skills that counteract suffering (Theme 4) through empowerment, connectedness, and sustained relief.

CONCLUSIONS

This work elucidates how AME works to counteract stressful qualities of cancer treatment. As parents witnessed positive and transformative changes in their child, they experienced relief and reported shifts in their perspective about cancer treatment. This led to learning and use of music as a coping strategy that extended beyond therapist-led sessions. Accessible, music-based interventions, like AME, offer a developmentally appropriate and effective way to support parents and young children during treatment.

Changes in Stress Following Wage Increases for Early Childhood Educators

Early childhood educators have one of the most important roles in society, helping the youngest generation flourish, yet educators earn some of the lowest wages. Given their disparate financial value, educators have unsurprisingly reported high stress. Educators' high stress and low wages may affect their health, workplace turnover, and children's development. Here, we observed whether natural wage increases were associated with reduced stress in educators during the 2021-2022 academic year. Across two time points (TPs), 67 center-based educators of children 0-5 years old completed surveys on their wages and psychological stress (perceived stress, depression, and anxiety). Fifty educators provided hair cortisol concentration to represent chronic physiological stress. Over about three months, educators received a mean wage increase of $1.85/hour. Before the wage increase, minoritized educators earned about $1.50 less than White educators, but earnings were more similar at the second TP. Educators' depression at the start of the academic year was related to their next three months' of physiological stress. Over time, educators' stress remained high and was unassociated with wage changes. Our results suggest a concentrated examination into eliminating wage inequities and reducing the stress of educators.

Supplementary Information

The online version contains supplementary material available at 10.1007/s10643-024-01666-0.

Psychological and Physiological Stress and Stressors in Early Childhood Educators: An Observational Pilot Study

While early childhood educators' mental health is important, it may also affect the well-being and education of their students. Yet, little research has described the stress and stressors of early childhood educators (ECEs), particularly as the pandemic wanes. This pilot study aimed to (1) describe ECEs' psychological and physiological stress and (2) examine the association between ECEs' psychological and physiological stress levels with stressors. A convenience sample of 67 ECEs, serving children 0-5 years old from 13 early educational centers completed surveys on psychological stress (perceived stress, anxiety, and depression), stressors (economic hardship, food insecurity, adverse childhood experiences), and demographics in Fall 2021. A subsample of ECEs provided hair samples, analyzed for cortisol, to estimate physiologic stress. Regarding stress, 63% met the criteria for major depressive disorder and 41% for generalized anxiety disorder. Only 26% were taking medications to manage mental health. About 25% experienced the stressors of food insecurity and economic hardship; 80% experienced at least one adverse childhood experience. Only education level significantly predicted perceived stress and depression - above and beyond stressors, household income, race, and age. The results have policy and practice implications for implementing evidence-based solutions to buffer stress and stressors in early childhood educators.

Early Childhood in Marginalized Roma Communities: Health Risks and Health Outcomes

Objectives

This study aims to compare selected early childhood health risks and health outcomes of children from marginalized Roma communities (MRCs) in Slovakia with those of the majority.

Methods

We obtained cross-sectional data from mother-child dyads from the majority (N = 109) and MRCs (N = 143) via questionnaires and from medical records. Socioeconomic status, health risks and health outcomes were compared using chi-square and Mann-Whitney U tests in SPSS.

Results

Mothers from MRCs reported significantly worse socioeconomic status. Air quality in the households in MRCs was significantly worse, affected by heating with stoves, burning fresh wood and indoor smoking. The diet composition of children from MRCs was characterized by shorter breastfeeding and unhealthy diet composition less fresh fruits and vegetables, more processed meat products, and sweet and salty snacks. Children from MRCs more often suffered from respiratory and diarrheal diseases, used antibiotics and were hospitalized.

Conclusion

The health and healthy development of children living in MRCs is endangered by various poverty-related factors. Persistent differences in exposures and health in early childhood should be a priority goal of the state's social and health policies.

Adolescents' hair cortisol concentrations during COVID-19: Evidence from two longitudinal studies in the Netherlands and the United States

BACKGROUND

Prolonged stress exposure is associated with alterations in cortisol output. The COVID-19 pandemic represented a stressor for many, including children. However, a high-quality caregiving environment may protect against psychological problems and possibly against elevations in cortisol. We examined adolescents' physiological stress responses to the pandemic and the role of attachment in two longitudinal samples from the Netherlands and the United States (https://aspredicted.org/HHY_8MK).

METHODS

Cortisol was assessed from hair samples before and during the pandemic, while attachment was self-reported prepandemic. Study 1 included a Dutch sample (N = 158; examined at ages 10 and later at 14 years old), whereas Study 2 included a US sample (N = 153; examined at ages 9-11 and again 2 years later) and an age-matched prepandemic sample (N = 29, 10-13 years old). Repeated-measures analyses of variance examined changes in cortisol from prepandemic to during the pandemic and the effect of attachment in each sample separately.

RESULTS

After accounting for age, both studies revealed nonsignificant changes in hair cortisol and a nonsignificant effect of attachment. A significant effect of sex emerged in Study 1, with Dutch girls showing a significant cortisol increase during the pandemic, which was not explained by puberty.

CONCLUSION

These findings suggest differential associations of the pandemic with hair cortisol increases by sex and country.

Patterns of toxic stress and trauma for pediatric Hematopoietic Stem Cell Transplantation (HSCT): creating a model of responsive intervention

BACKGROUND

It is well documented that invasive medical treatment, such as Hematopoietic Stem Cell Transplant (HSCT), can be stressful and potentially traumatic for children, leading to Post Traumatic Stress Disorder (PTSD) or Post Traumatic Stress Symptoms (PTSS) after treatment. Despite this evidence, little is known about the patterns of stress and trauma that develop throughout the HSCT admission.

PURPOSE

To examine patterns of toxic stress and trauma that develop throughout the pediatric HSCT admission and understand how music therapists, as members of the interdisciplinary psychosocial care team, may proactively intervene to mitigate the impact of traumatic experiences.

METHOD

A two-phase retrospective longitudinal multi-case design was used with a combination of time series and template analyses.

SAMPLE

The sample included 14 pediatric patients (aged 0-17) undergoing HSCT at a large pediatric hospital in the Midwestern United States.

FINDINGS

The results were identifiable patterns of toxic stress and trauma and a model of care for music therapy that is responsive to the identified patterns.

Unmet Social Needs and Patterns of Hair Cortisol Concentration in Mother-Child Dyads

Background

Mothers and their children demonstrate dyadic synchrony of hypothalamic-pituitary-adrenal (HPA) axis function, likely influenced by shared genetic or environmental factors. Although evidence has shown that chronic stress exposure has physiologic consequences for individuals-including on the HPA axis-minimal research has explored how unmet social needs such as food and housing instability may be associated with chronic stress and HPA axis synchrony in mother-child dyads.

Methods

We conducted a secondary analysis of data from 364 mother-child dyads with low-income recruited during a randomized trial conducted in an urban pediatric clinic. We used latent profile analysis (LPA) to identify subgroups based on naturally occurring patterns of within-dyad hair cortisol concentration (HCC). A logistic regression model predicted dyadic HCC profile membership as a function of summative count of survey-reported unmet social needs, controlling for demographic and health covariates.

Results

LPA of HCC data from dyads revealed a 2-profile model as the best fit. Comparisons of log HCC for mothers and children in each profile group resulted in significantly "higher dyadic HCC" versus "lower dyadic HCC" profiles (median log HCC for mothers: 4.64 vs 1.58; children: 5.92 vs 2.79, respectively; P < .001). In the fully adjusted model, each one-unit increase in number of unmet social needs predicted significantly higher odds of membership in the higher dyadic HCC profile when compared to the lower dyadic HCC profile (odds ratio  =  1.13; 95% confidence interval [1.04-1.23]; P  =  .01).

Conclusion

Mother-child dyads experience synchronous patterns of physiologic stress, and an increasing number of unmet social needs is associated with a profile of higher dyadic HCC. Interventions aimed at decreasing family-level unmet social needs or maternal stress are, therefore, likely to affect pediatric stress and related health inequities; efforts to address pediatric stress similarly may affect maternal stress and related health inequities. Future research should explore the measures and methods needed to understand the impact of unmet social needs and stress on family dyads.

Mediators and Moderators of Active Music Engagement to Reduce Traumatic Stress Symptoms and Improve Well-being in Parents of Young Children With Cancer

OBJECTIVE

This trial examined the effects of proximal/distal mediators and moderators of an Active Music Engagement (AME) intervention on young child/parent distress, quality of life, and family function outcomes.

METHODS

Child/parent dyads (n = 125) were randomized to AME or Audio-storybooks attention control condition. Each group received 3 sessions with a credentialed music therapist for 3 consecutive days with data collection at baseline, post-intervention (T2), and 30-days later (T3). Potential proximal mediators included within session child and parent engagement. Potential distal mediators included changes in perceived family normalcy, parent self-efficacy, and independent use of play materials. Potential moderators included parent/child distress with prior hospitalizations, parent traumatic stress screener (PCL-6), and child age. Outcomes included child emotional distress and quality of life; parent emotion, traumatic stress symptoms (IES-R), well-being; and family function. Mediation effects were estimated using ANCOVA, with indirect effects estimated using the percentile bootstrap approach. Moderation effects were tested by including appropriate interaction terms in models.

RESULTS

No significant mediation effects were observed. Child distress with prior hospitalizations moderated AME effects for IES-R intrusion subscale scores at T2 (P = .01) and avoidance subscale scores at T3 (P = .007). Traumatic stress screener scores (PCL-6) moderated intervention effects for IES-R hyperarousal subscale scores at T2 (P = .01). There were no moderation effects for child age.

CONCLUSIONS

AME is a promising intervention for mitigating traumatic stress symptoms and supporting well-being in parents of children with cancer, particularly for parents who screen high for traumatic stress and whose children are more highly distressed with hospitalization.