Leveraging the developmental neuroscience of caregiving to promote resilience among youth exposed to adversity.

Early adversity is a major risk factor for the emergence of psychopathology across development. Identifying mechanisms that support resilience, or favorable mental health outcomes despite exposure to adversity, is critical for informing clinical intervention and guiding policy to promote youth mental health. Here we propose that caregivers play a central role in fostering resilience among children exposed to adversity via caregiving influences on children's corticolimbic circuitry and emotional functioning. We first delineate the numerous ways that caregivers support youth emotional learning and regulation and describe how early attachment lays the foundation for optimal caregiver support of youth emotional functioning in a developmental stage-specific manner. Second, we outline neural mechanisms by which caregivers foster resilience-namely, by modulating offspring corticolimbic circuitry to support emotion regulation and buffer stress reactivity. Next, we highlight the importance of developmental timing and sensitive periods in understanding caregiving-related mechanisms of resilience. Finally, we discuss clinical implications of this line of research and how findings can be translated to guide policy that promotes the well-being of youth and families.

Characterizing experiential elements of early-life stress to inform resilience: Buffering effects of controllability and predictability and the importance of their timing.

Key theoretical frameworks have proposed that examining the impact of exposure to specific dimensions of stress at specific developmental periods is likely to yield important insight into processes of risk and resilience. Utilizing a sample of N = 549 young adults who provided a detailed retrospective history of their lifetime exposure to numerous dimensions of traumatic stress and ratings of their current trauma-related symptomatology via completion of an online survey, here we test whether an individual's perception of their lifetime stress as either controllable or predictable buffered the impact of exposure on trauma-related symptomatology assessed in adulthood. Further, we tested whether this moderation effect differed when evaluated in the context of early childhood, middle childhood, adolescence, and young adulthood stress. Consistent with hypotheses, results highlight both stressor controllability and stressor predictability as buffering the impact of traumatic stress exposure on trauma-related symptomatology and suggest that the potency of this buffering effect varies across unique developmental periods. Leveraging dimensional ratings of lifetime stress exposure to probe heterogeneity in outcomes following stress - and, critically, considering interactions between dimensions of exposure and the developmental period when stress occurred - is likely to yield increased understanding of risk and resilience following traumatic stress.

Neural effects of controllability as a key dimension of stress exposure.

Cross-species evidence suggests that the ability to exert control over a stressor is a key dimension of stress exposure that may sensitize frontostriatal-amygdala circuitry to promote more adaptive responses to subsequent stressors. The present study examined neural correlates of stressor controllability in young adults. Participants (N = 56; Mage = 23.74, range = 18-30 years) completed either the controllable or uncontrollable stress condition of the first of two novel stressor controllability tasks during functional magnetic resonance imaging (fMRI) acquisition. Participants in the uncontrollable stress condition were yoked to age- and sex-matched participants in the controllable stress condition. All participants were subsequently exposed to uncontrollable stress in the second task, which is the focus of fMRI analyses reported here. A whole-brain searchlight classification analysis revealed that patterns of activity in the right dorsal anterior insula (dAI) during subsequent exposure to uncontrollable stress could be used to classify participants' initial exposure to either controllable or uncontrollable stress with a peak of 73% accuracy. Previous experience of exerting control over a stressor may change the computations performed within the right dAI during subsequent stress exposure, shedding further light on the neural underpinnings of stressor controllability.

Development and validation of the Dimensional Inventory of Stress and Trauma Across the Lifespan (DISTAL): A novel assessment tool to facilitate the dimensional study of psychobiological sequelae of exposure to adversity.

Decades of research underscore the profound impact of adversity on brain and behavioral development. Recent theoretical models have highlighted the importance of considering specific features of adversity that may have dissociable effects at distinct developmental timepoints. However, existing measures do not query these dimensions in sufficient detail to support the proliferation of this approach. The Dimensional Inventory of Stress and Trauma Across the Lifespan (DISTAL) was developed with the aim to thoroughly and retrospectively assess the timing, severity (of exposure and reaction), type, persons involved, controllability, predictability, threat, deprivation, proximity, betrayal, and discrimination inherent in an individual's exposure to adversity. Here, we introduce this instrument, present descriptive statistics drawn from a sample of N = 187 adults who completed the DISTAL, and provide initial information about its psychometric properties. This novel measure facilitates the expansion of research focused on assessing the relative impact of exposure to key dimensions of adversity on the brain and behavior across development.

Parental Assistance with Emotion Regulation Moderates Link Between COVID-19 Stress and Child Mental Health.

OBJECTIVE: The COVID-19 pandemic has severely impacted children's mental health. All children have not been affected equally, however, and whether parental emotion socialization might buffer or exacerbate the impact of COVID-19 on children's mental health remains an important question. METHOD: During the first peak of the COVID-19 pandemic in the U.S. N = 200 parents of children ages 0-17 (52.5% female) completed questionnaires related to parental assistance with children's emotion regulation, symptomatology, and exposure to COVID-19-related stress. Parents were 74% Non-Hispanic/Latino/a White, 13% Asian, 4.5% Hispanic/Latino/a, 4% Black/African American, 2.5% Native American, and 1.5% bi/multiracial; 0.5% of participants preferred not to state their race/ethnicity. In a series of linear regression analyses, we examined whether parental assistance with children's execution of emotion regulation strategies - across a variety of prototypically-adaptive and -maladaptive strategies - moderates the association between children's exposure to COVID-19-related stress and symptomatology. RESULTS: Results suggest that parental assistance with the execution of prototypically-adaptive strategies (i.e., acceptance, problem solving, behavioral disengagement) and prototypically-maladaptive strategies (i.e., suppression, rumination) may buffer or exacerbate, respectively, the impact of COVID-19-related stress on youth mental health. CONCLUSIONS: Though interpretation of findings is constrained by limitations inherent in collecting data during a pandemic, results highlight the importance of supporting parents - who play a critical role of supporting children - during public health emergencies that affect family life. Interventions designed to improve child wellbeing during the ongoing pandemic may benefit from training parents to assist their children with specific emotion regulation strategies.

Ventral hippocampus interacts with prelimbic cortex during inhibition of threat response via learned safety in both mice and humans.

Heightened fear and inefficient safety learning are key features of fear and anxiety disorders. Evidence-based interventions for anxiety disorders, such as cognitive behavioral therapy, primarily rely on mechanisms of fear extinction. However, up to 50% of clinically anxious individuals do not respond to current evidence-based treatment, suggesting a critical need for new interventions based on alternative neurobiological pathways. Using parallel human and rodent conditioned inhibition paradigms alongside brain imaging methodologies, we investigated neural activity patterns in the ventral hippocampus in response to stimuli predictive of threat or safety and compound cues to test inhibition via safety in the presence of threat. Distinct hippocampal responses to threat, safety, and compound cues suggest that the ventral hippocampus is involved in conditioned inhibition in both mice and humans. Moreover, unique response patterns within target-differentiated subpopulations of ventral hippocampal neurons identify a circuit by which fear may be inhibited via safety. Specifically, ventral hippocampal neurons projecting to the prelimbic cortex, but not to the infralimbic cortex or basolateral amygdala, were more active to safety and compound cues than threat cues, and activity correlated with freezing behavior in rodents. A corresponding distinction was observed in humans: hippocampal-dorsal anterior cingulate cortex functional connectivity-but not hippocampal-anterior ventromedial prefrontal cortex or hippocampal-basolateral amygdala connectivity-differentiated between threat, safety, and compound conditions. These findings highlight the potential to enhance treatment for anxiety disorders by targeting an alternative neural mechanism through safety signal learning.

Trauma exposure and mental health outcomes among Central American and Mexican children held in immigration detention at the United States-Mexico border.

We explored the associations between early-life adversity and migration-related stress on the mental health of Central American and Mexican migrating children held in United States immigration detention facilities. Migrating children have high rates of trauma exposure prior to and during migration. Early-life adversity increases risk for developing mental health disorders. Forced separation of migrating children from their parents at the United States-Mexico border potentially exacerbates this risk. We sought to determine whether exposure to trauma prior to immigration and specific features of immigration detention were associated with posttraumatic stress symptomatology. We interviewed parents of 84 migrating children (ages 1-17) after families were released from immigration detention facilities to assess children's migration- and detention-related experiences. A modified version of the University of California Los Angeles Posttraumatic Stress Disorder (PTSD) Reaction Index was administered to assess children's PTSD symptoms and document trauma exposure. A total of 97.4% of children experienced at least one premigration traumatic event. PTSD symptom severity was most strongly predicted by premigration trauma and duration of parent-child separation. This study contributes to a growing empirical literature documenting that early-life adversity increases risk of developing mental health disorders, particularly following additional stress exposure, and that remaining with parents during immigration detention may help mitigate children's stress response.

Influences of early-life stress on frontolimbic circuitry: Harnessing a dimensional approach to elucidate the effects of heterogeneity in stress exposure.

Early-life stress confers profound and lasting risk for developing cognitive, social, emotional, and physical health problems. The effects of stress on the developing brain contribute to this risk, with frontolimbic circuitry particularly susceptible to early experiences, possibly due to its innervation with glucocorticoid receptors and the timing of frontolimbic circuit maturation. To date, the majority of studies on stress and frontolimbic circuitry have employed a categorical approach, comparing stress-exposed versus non-stress-exposed youth. However, there is vast heterogeneity in the nature of stress exposure and in outcomes. Recent forays into understanding the psychobiological effects of stress have employed a dimensional approach focused on experiential, environmental, and temporal factors that influence the association between stress and subsequent vulnerability. This review highlights empirical findings that inform a dimensional approach to understanding the effects of stress on frontolimbic circuitry. We identify the timing, type, severity, controllability, and predictability of stress, and the degree to which a caregiver is involved, as specific features of stress that may play a substantial role in differential outcomes. We propose a framework for the effects of these features of stress on frontolimbic development that may partially determine how heterogeneity in stress exposure influences this circuitry and, ultimately, mental health.

Migration-related trauma and mental health among migrant children emigrating from Mexico and Central America to the United States: Effects on developmental neurobiology and implications for policy.

Children make up over half of the world's migrants and refugees and face a multitude of traumatic experiences prior to, during, and following migration. Here, we focus on migrant children emigrating from Mexico and Central America to the United States and review trauma related to migration, as well as its implications for the mental health of migrant and refugee children. We then draw upon the early adversity literature to highlight potential behavioral and neurobiological sequalae of migration-related trauma exposure, focusing on attachment, emotion regulation, and fear learning and extinction as transdiagnostic mechanisms underlying the development of internalizing and externalizing symptomatology following early-life adversity. This review underscores the need for interdisciplinary efforts to both mitigate the effects of trauma faced by migrant and refugee youth emigrating from Mexico and Central America and, of primary importance, to prevent child exposure to trauma in the context of migration. Thus, we conclude by outlining policy recommendations aimed at improving the mental health of migrant and refugee youth.

Associations between prenatal substance exposure, prenatal violence victimization, unintended pregnancy, and trauma exposure in childhood in a clinical setting.

Given the importance of early prevention and intervention strategies for children exposed to trauma, detection of early risk factors for exposure to traumatic events in childhood is critical. The present study examined associations between three known prenatal risk factors that characterize environmental instability in utero-prenatal substance exposure, prenatal violence victimization, and unintended pregnancy-and child exposure to interparental violence and other adverse experiences in a sample of 198 mother-child dyads (M child age = 44.48 months) referred to a hospital clinic for treatment following exposure to trauma. Prenatal substance and violence exposure were associated with child trauma exposure, and prenatal violence victimization was also associated with maternal severity ratings of traumatic exposures. Unintended pregnancy was not associated with child trauma exposure or severity. These findings expand our understanding of prenatal risk factors for trauma exposure in childhood and, specifically, highlight prenatal substance exposure and violence victimization as risk factors for subsequent exposure to trauma in early childhood. Results suggest that prenatal prevention and intervention programs should target reducing maternal substance use and in-utero exposure to violence.

Dada la importancia de las estrategias de prevención e intervención tempranas para niños expuestos al trauma, el detectar los tempranos factores de riesgo en el caso de estar expuesto a eventos traumáticos en la niñez es crítico. El presente estudio examinó las asociaciones entre tres conocidos factores de riesgo prenatales que caracterizan la inestabilidad ambiental en el útero -el haber estado expuesto a sustancias prenatalmente, la victimización de la violencia prenatal, y el embarazo no intencional -y el que el niño esté expuesto a la violencia entre progenitores (IPV) y otras experiencias adversas en un grupo muestra de 198 díadas madre-niño (edad promedio del niño = 44.48 meses) que habían sido referidas a una clínica hospital para el tratamiento que seguía al haber estado expuestos al trauma. El haber estado expuesto a sustancia y violencia prenatal se asoció con el hecho de que el niño había estado expuesto a trauma, y la victimización de la violencia prenatal también se asoció con la severidad maternal de clasificación de la exposición traumática. El embarazo no intencional no se asoció con la exposición del niño al trauma o la severidad. Estos resultados amplían nuestra comprensión de los factores de riesgo prenatales en cuanto al haber estado expuesto al trauma en la niñez y, específicamente, subrayan el haber estado expuesto a sustancias prenatalmente y la victimización de la violencia como subsecuentes factores de riesgo para estar expuesto al trauma en la temprana niñez. Los resultados sugieren que los programas de prevención e intervención prenatales deber enfocarse en reducir el uso de sustancias por parte de la madre y el estar expuesto dentro del útero a la violencia.

Vu l'importance des stratégies de prévention précoce et d'intervention pour les enfants exposés au trauma, la détection de facteurs de risque précoce pour l'exposition à des événements traumatiques s'avère critique. Cette étude a examiné les liens entre trois facteurs de risque prénatals connus qui caractérisent l'instabilité environnementale in utero - l'exposition prénatale à des substances toxiques, la victimisation liée à la violence prénatale, et la grossesse involontaire - ainsi que l'exposition à la violence conjugale et d'autres expériences adverses chez un échantillon de 198 dyades mère-enfant (moyenne d'âge de l'enfant = 44,48 mois) envoyées consulter en clinique hospitalière pour un traitement suivant une exposition à un trauma. L'exposition à la toxicomanie et l'exposition à la violence étaient liées à l'exposition de l'enfant au trauma et la victimisation liée à la violence prénatale était également liée à la sévérité des scores maternels d'expositions traumatiques. La grossesse involontaire n'était pas liée à l'exposition au trauma de l'enfant ou à la sévérité. Ces résultats élargissent notre compréhension des facteurs prénatals d'exposition au trauma dans l'enfance et mettent en lumière plus spécifiquement l'exposition à la toxicomanie prénatale et la victimisation liée à la violence en tant que facteurs de risque d'exposition ultérieure au trauma durant la petite enfance. Les résultats suggèrent que la prévention prénatale et les programmes d'intervention devraient cibler la réduction d'utilisation toxicomane maternelle et l'exposition à la violence in-utero.

Leveraging multivariate approaches to advance the science of early-life adversity.

Since the landmark Adverse Childhood Experiences (ACEs) study, adversity research has expanded to more precisely account for the multifaceted nature of adverse experiences. The complex data structures and interrelated nature of adversity data require robust multivariate statistical methods, and recent methodological and statistical innovations have facilitated advancements in research on childhood adversity. Here, we provide an overview of a subset of multivariate methods that we believe hold particular promise for advancing the field's understanding of early-life adversity, and discuss how these approaches can be practically applied to explore different research questions. This review covers data-driven or unsupervised approaches (including dimensionality reduction and person-centered clustering/subtype identification) as well as supervised/prediction-based approaches (including linear and tree-based models and neural networks). For each, we highlight studies that have effectively applied the method to provide novel insight into early-life adversity. Taken together, we hope this review serves as a resource to adversity researchers looking to expand upon the cumulative approach described in the original ACEs study, thereby advancing the field's understanding of the complexity of adversity and related developmental consequences.

Integrating developmental neuroscience with community-engaged approaches to address mental health outcomes for housing-insecure youth: Implications for research, practice, and policy.

One in three children in the United States is exposed to insecure housing conditions, including unaffordable, inconsistent, and unsafe housing. These exposures have detrimental impacts on youth mental health. Delineating the neurobehavioral pathways linking exposure to housing insecurity with children's mental health has the potential to inform interventions and policy. However, in approaching this work, carefully considering the lived experiences of youth and families is essential to translating scientific discovery to improve health outcomes in an equitable and representative way. In the current paper, we provide an introduction to the range of stressful experiences that children may face when exposed to insecure housing conditions. Next, we highlight findings from the early-life stress literature regarding the potential neurobehavioral consequences of insecure housing, focusing on how unpredictability is associated with the neural circuitry supporting cognitive and emotional development. We then delineate how community-engaged research (CEnR) approaches have been leveraged to understand the effects of housing insecurity on mental health, and we propose future research directions that integrate developmental neuroscience research and CEnR approaches to maximize the impact of this work. We conclude by outlining practice and policy recommendations that aim to improve the mental health of children exposed to insecure housing.

Hippocampal Involvement in Safety Signal Learning Varies With Anxiety Among Healthy Adults.

Background: Safety signal learning (SSL), based on conditioned inhibition of fear in the presence of learned safety, can effectively attenuate threat responses in animal models and humans. Difficulty regulating threat responses is a core feature of anxiety disorders, suggesting that SSL may provide a novel mechanism for fear reduction. Cross-species evidence suggests that SSL involves functional connectivity between the anterior hippocampus and the dorsal anterior cingulate cortex. However, the neural mechanisms supporting SSL have not been examined in relation to trait anxiety or while controlling for the effect of novelty. Methods: Here, we investigated the neural mechanisms involved in SSL and associations with trait anxiety in a sample of 64 healthy (non-clinically anxious) adults (ages 18-30 years; 43 female, 21 male) using physiological, behavioral, and neuroimaging (functional magnetic resonance imaging) data collected during an SSL task. Results: During SSL, compared with individuals with lower trait anxiety, individuals with higher trait anxiety showed less fear reduction as well as altered hippocampal activation and hippocampal-dorsal anterior cingulate cortex functional connectivity, and lower inferior frontal gyrus and ventrolateral prefrontal cortex activation. Importantly, the findings show that SSL reduces threat responding, across learning and over and above the effect of novelty, and involves hippocampal activation. Conclusions: These findings provide new insights into the nature of SSL and suggest that there may be meaningful variation in SSL and related neural correlates as a function of trait anxiety, with implications for better understanding fear reduction and optimizing interventions for individuals with anxiety disorders.

Parents' emotion suppression exacerbates the effect of COVID-19 stress on youth internalizing symptomatology.

The COVID-19 pandemic has resulted in heightened stress for families in the United States, and exposure to pandemic-related stress has been found to confer risk for mental health problems among both children and parents. To isolate risk and protective factors for children living through the ongoing pandemic, several studies have begun to examine family-level factors that may exacerbate or buffer the impact of exposure to COVID-19-related stress on children's symptomatology. Building upon the extant literature documenting associations between parents' emotion regulation and children's mental health, especially during times of stress, the present study aimed to examine parents' regulation of their own emotions as a potential moderator of the association between children's exposure to family-level COVID-19-related stress and internalizing and externalizing problems. Results suggest that parents' regulation of their own emotions using expressive suppression, specifically, may exacerbate the effect of exposure to pandemic-related stress on children's internalizing problems, but not externalizing problems. Results highlight the importance of prioritizing parents' mental health and self-regulation in prevention and intervention efforts aimed at improving family-wide mental health outcomes during public health crises that place family systems under significant stress. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

How Caregivers Support Children's Emotion Regulation: Construct Validation of the Parental Assistance With Child Emotion Regulation (PACER) Questionnaire.

Caregivers play a crucial role in supporting the development of their children's emotion regulation. This study validated the Parental Assistance with Child Emotion Regulation (PACER) Questionnaire in a sample of 491 caregivers (M = 32.89 years) of young children ≤ 5 years. Exploratory structural equation modeling provided evidence of the instrument's ability to assess parental support for 10 distinct emotion regulation strategies that match the intended design of the instrument. Latent profile analysis revealed three distinct caregiver profiles characterized by above-average support for strategies that previously have been shown to be predictive of adaptive outcomes, maladaptive outcomes, or mixed-outcomes, respectively. Results add to existing literature that suggests the PACER is a valid and reliable assessment of caregiver-implemented support of emotion regulation strategies for children ≤ 5 years old. Evidence of distinct caregiver profiles highlights opportunities for prevention and intervention efforts to bolster extrinsic support for adaptive emotion regulation strategies. This instrument may be well-suited to capturing changes throughout the early developmental period, in addition to monitoring caregiver-facing interventions promoting optimal emotion regulation in children.

Validation of an electronic self-administered version of the Dimensional Inventory of Stress and Trauma Across the Lifespan in a large sample of young adults.

Recent advances in the dimensional assessment of traumatic stress have initiated research examining correlates of exposure to specific features of stress. However, existing tools require intensive, in-person, clinician administration to generate the rich phenotypic data required for such analyses. These approaches are time consuming, costly, and substantially restrict the degree to which assessment tools can be disseminated in large-scale studies, constraining the refinement of existing dimensional models of early adversity. Here, we present an electronic adaptation of the Dimensional Inventory of Stress and Trauma Across the Lifespan (DISTAL), called the DISTAL-Electronic (DISTAL-E), present descriptive statistics drawn from a large sample of N = 500 young adult participants who completed the novel measure, and provide information about its psychometric properties. Results suggest that the DISTAL-E adequately assesses the following dimensional indices of traumatic stress exposure: type, chronicity, age of onset, severity, proximity, caregiver involvement, controllability, predictability, betrayal, threat, and deprivation and that it has excellent content and convergent validity and good test-retest reliability over a 7-11 day period. Although the development of the DISTAL-E facilitates the broad assessment of dimensions of stress exposure in large-scale datasets and has the potential to increase access to stress-related research to a wider group of participants who may not be able to access clinical research in traditional, in-person, clinic-based settings, the generalizability of results of the present study may be constrained by the fact that study participants were primarily White, educated, and with middle-to-high income. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Multivariate links between the developmental timing of adversity exposure and white matter tract integrity in adulthood.

Early-life adversity is pervasive worldwide and represents a potent risk factor for increased mental health burden across the lifespan. However, there is substantial individual heterogeneity in associations between adversity exposure, neurobiological changes, and mental health problems. Accounting for key features of adversity such as the developmental timing of exposure may clarify associations between adversity, neurodevelopment, and mental health. The present study leverages sparse canonical correlation analysis to characterize modes of covariation between age of adversity exposure and the integrity of white matter tracts throughout the brain in a sample of 107 adults. We find that adversity exposure during middle childhood (ages 5-6 and 8-9 in particular) is consistently linked with alterations in white matter tract integrity, such that tracts supporting sensorimotor functions display higher integrity in relation to adversity exposure while tracts supporting cortico-cortical communication display lower integrity. Further, latent patterns of tract integrity linked with adversity experienced across preschool age and middle childhood (ages 4-9) were associated with trauma-related symptoms in adulthood. Our findings underscore that adversity exposure may differentially affect white matter in a function- and developmental-timing specific manner and suggest that adversity experienced between ages 4-9 may shape the development of global white matter tracts in ways that are relevant for adult mental health.

Development and Validation of the Parental Assistance with Child Emotion Regulation (PACER) Questionnaire.

Caregivers play a central role in promoting emotion regulation throughout infancy, childhood, and adolescence. However, there are no existing psychometric measures to assess how parents assist children in employing emotion regulation strategies for negative emotions. We therefore developed the Parental Assistance with Child Emotion Regulation (PACER) Questionnaire to assess the degree to which parents assist their children in their use of ten different regulation strategies. In this paper, we describe the development of the PACER and examine its psychometric properties (N = 407 parents of children ages birth to 17 years). In so doing, we also use the PACER to comprehensively explore the links between parent-assisted emotion regulation and indices of parent and child stress, symptomatology, and attachment. Confirmatory factor analyses of the PACER items supported its intended ten-factor structure (corresponding to ten specific regulation strategies), which was invariant across different child age and sex categories. PACER scale scores had excellent internal consistency and generally acceptable test-retest reliability over a one-week period. Convergent validity was established via correlations between PACER scales and indices of parental emotion sensitivity, expressivity, and regulation, as well as parents' perception of the efficacy of their assistance with children's execution of emotion regulatory strategies. Lower parental facilitation of stereotypically adaptive emotion regulatory strategies was associated with higher child internalizing and externalizing problems and with poorer parent-child relationship quality. Overall, these findings suggest that the PACER may be a useful tool for the assessment of parental assistance with child emotion regulation across development.

Neural circuitry involved in conditioned inhibition via safety signal learning is sensitive to trauma exposure.

Exposure to trauma throughout the lifespan is prevalent and increases the likelihood for the development of mental health conditions such as anxiety and post-traumatic stress disorder (PTSD). Safety signal learning (SSL)--a form of conditioned inhibition that involves reducing fear via conditioned safety--has been shown to effectively attenuate fear responses among individuals with trauma exposure, but the association between trauma exposure and the neural mechanisms of SSL remains unknown. Adults with varied prior exposure to trauma completed a conditioned inhibition task during functional MRI scanning and collection of skin conductance response (SCR). Conditioned safety signals reduced psychophysiological reactivity (i.e., SCR) in the overall sample. Although exposure to a higher number of traumatic events was associated with elevated SCR across all task conditions, SCR did not differ between threat in the presence of conditioned safety (i.e., SSL) relative to threat alone in a trauma-related manner. At the neural level, however, higher levels of trauma exposure were associated with lower hippocampal, amygdala, and dorsolateral prefrontal cortical activation during SSL. These findings suggest that while conditioned safety signals can reduce fear in the presence of threat even among individuals exposed to higher degrees of trauma, the neural circuitry involved in SSL is in fact sensitive to trauma exposure. Future research investigating neural processes during SSL among individuals with PTSD or anxiety can further elucidate the ways in which SSL and its neural correlates may reduce fear and link trauma exposure with later mental health conditions.

Associations between early-life stress exposure and internalizing symptomatology during the COVID-19 pandemic: Assessing the role of neurobehavioral mediators.

Background: The ongoing COVID-19 pandemic is a major stressor that has been associated with increased risk for psychiatric illness in the general population. Recent work has highlighted that experiences of early-life stress (ELS) may impact individuals' psychological functioning and vulnerability for developing internalizing psychopathology in response to pandemic-related stress. However, little is known about the neurobehavioral factors that may mediate the association between ELS exposure and COVID-related internalizing symptomatology. The current study sought to examine the mediating roles of pre-pandemic resting-state frontoamygdala connectivity and concurrent emotion regulation (ER) in the association between ELS and pandemic-related internalizing symptomatology. Methods: Retrospective life-stress histories, concurrent self-reported ER strategies (i.e., reappraisal and suppression), concurrent self-reported internalizing symptomatology (i.e., depression- and anxiety-related symptomatology), and resting-state functional connectivity data from a sample of adults (N = 64, M age = 22.12, female = 68.75%) were utilized. Results: There were no significant direct associations between ELS and COVID-related internalizing symptomatology. Neither frontoamygdala functional connectivity nor ER strategy use mediated an association between ELS and COVID-related internalizing symptomatology (ps > 0.05). Exploratory analyses identified a significant moderating effect of reappraisal use on the association between ELS and internalizing symptomatology (ß = -0.818, p = 0.047), such that increased reappraisal use buffered the impact of ELS on psychopathology. Conclusions: While frontoamygdala connectivity and ER do not appear to mediate the association between ELS and COVID-related internalizing symptomatology, our findings suggest that the use of reappraisal may buffer against the effect of ELS on mental health during the pandemic.