Faculty Bibliography

Attachment-related learning (that is, forming preferences for cues associated with the parent) defies the traditional rules of learning in that it seems to occur independently of apparent reinforcement¹-young children prefer cues associated with their parent, regardless of valence (rewarding or aversive), despite the diversity of parenting styles². This obligatory attraction for parental cues keeps the child nearby and safe to explore the environment; thus, it is critical for survival and sets the foundation for normal human cognitive-emotional behaviour. Here we examined the learning underlying this attraction in preschool-age children. Young children underwent an aversive conditioning procedure either in the parent's presence or alone. We showed that despite disliking the aversive unconditioned stimulus, children exhibited a behavioural approach for conditioned stimuli that were acquired in the parent's presence and an avoidance for stimuli acquired in the parent's absence, an effect that was strongest among those with the lowest cortisol levels. The results suggest that learning systems during early childhood are constructed to permit modification by parental presence.

Objectives: We will: 1) describe the WonderLab, a digital health initiative within the New York University Langone Health Department of Child and Adolescent Psychiatry; 2) introduce When to Wonder: Picky Eating, which is the WonderLab's first early childhood mental health digital study; and 3) present preliminary data from this study. Our first objective is to demonstrate how smartphone-based tools developed to assess children in their homes and the use of advanced data analytics can transform how, when, and where we assess young children's development and mental health. Our second objective is to share how our multidisciplinary team and agile development methodology enable us to build and launch a consumer-facing pediatric health app within an academic medical center.
Method(s): The WonderLab creates scalable mobile digital health tools to collect multimodal data in children's homes at the individual, family, and population levels. In December 2018, we released When to Wonder: Picky Eating, a national study with consent, enrollment, study activities, and feedback fully integrated in iOS and Android apps that parents download from the app stores. When to Wonder: Picky Eating focuses on the emotions and behaviors related to picky eating in children under the age of 7 years. Data sources include parent-report, video, audio, and an active task that children and parents play independently to quantify children's food preferences.
Result(s): We will present preliminary data from When to Wonder: Picky Eating to characterize normative and clinically significant emotions and behaviors related to picky eating. We will also share data on recruitment and engagement using social media, app performance, and "lessons learned" about digital pediatric health.
Conclusion(s): We create clinically and scientifically valid digital tools that parents and children want to use. We integrate clinical, scientific, engineering, design, data science, and bioethics expertise with collaborative user engagement and a "build, measure, learn" agile development culture. Our app-based study demonstrates how to build digital health tools that collect and analyze population-level and individual-level, multimodal data about children and families in the home. These new tools and approaches have the potential to transform our engagement with families and our delivery of care. EA, EC, MED
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Objectives: The risk for psychopathology increases with the number of adverse childhood experiences. Summing a number of experiences, however, assumes that all adversity equitably confers risk and operates through complementary mechanisms. To disentangle neurobiological pathways between disparate events and mental health, we examined how threat and deprivation-2 common dimensions of adversity-relate to early childhood psychopathology. Threat or the presence of experiences involving harm or threat of harm affects emotional control. Deprivation or absence of expected environmental inputs affects higher-order cognitive function. If threat and deprivation differentially affect brain development, then they may differentially relate to psychopathology, especially among young children.
Method(s): To examine these patterns, we used the Duke Preschool Anxiety Study, a cross-sectional study of youth ages 2-6 years enrolled through primary care from 2007 to 2011, weighted to reflect a screened population of 3433. Threat and deprivation were operationalized using questions from the Conflict Tactics Scale-2, Conflict Tactics Scale for Parent and Child, and Preschool Age Psychiatric Assessment. Threat measured physical or sexual abuse, domestic violence, and violent neighborhood. Deprivation measured neglect and lack of cognitive stimulation. Poisson regression with robust standard errors estimated adjusted prevalence ratios (PR) jointly for deprivation and threat in relation to counts for total symptoms and symptoms for specific disorders, such as anxiety, depression, and ADHD, in 760 children.
Result(s): Threat (47%) and deprivation (18%) were common; 36 percent of children had at least one disorder, and the total number of symptoms ranged from 0 to 46. Threat-exposed children had 40 percent more total symptoms (95% CI 1.2-1.6) than unexposed children after adjusting for deprivation and demographic covariates. Deprivation was not meaningfully associated with total symptom count (PR 1.1, 95% CI 0.9-1.5) after adjusting for threat and demographic covariates.
Conclusion(s): These disparate associations among threat, deprivation, and mental health symptomatology may reflect the young age of these children or our approach designed to distinguish the unique contributions of deprivation and threat, lending support to the dimensional model of adversity and psychopathology. CAN, PSP, PSC
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Objectives: Toxic stress in young children, also known as adverse childhood experiences (ACEs), may lead to changes in their nervous system, affect their development, and influence their mental and physical health. Pediatricians and child and adolescent psychiatrists are uniquely positioned to help families in difficult situations to reduce the risk of recurring trauma. They are also in the best position to make accurate diagnoses and to design appropriate, multimodal treatment plans. This often can involve treatment of several family members, particularly because trauma is often transmitted intergenerationally and needs to be addressed accordingly. This Symposium will bring the audience up to date on work being conducted on ACEs in a number of areas. It will introduce participants to the latest research findings in the ACE literature on young children. It will focus on recent neurophysiological findings related to the transgenerational carryover of maternal ACEs. New information about the role of fathers in ACE research will be provided, and targeted interventions that may be used in primary care settings will be described.
Method(s): This Symposium will consist of 5 parts: 1) a presentation on ACEs and opportunities for intervention in Early Head Start (EHS) programs; 2) a review of transgenerational effects of maternal ACEs and their implications for future studies; 3) a review of the literature on the roles of fathers in ACE studies and paternal risk factors for child maltreatment; 4) a discussion of maternal ACEs, PTSD, and maternal attribution of child emotional comprehension; and 5) a brief summary discussion of the program as a whole followed by a question-and-answer session.
Result(s): Participants will learn that ACEs are associated with numerous chronic health problems in young children. They will be able to recognize that there are various screening methods that effectively assess for ACEs. At the end of the Symposium, participants will identify the importance of individual and systems-level approaches that can help promote resilience and counteract ACEs.
Conclusion(s): Screening and intervention for ACEs are feasible and should be part of most child and adolescent psychiatry and pediatrics' programs. This Symposium offers up-to-date information on the latest ACE-related research. STRESS, CAN, EC
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Stable representation of information in distributed neural connectivity is critical to function effectively in the world. Despite the dynamic nature of the brain's functional architecture, characterizing its temporal stability within a continuous state has been largely neglected. Here we characterized stability of functional architecture at a dynamic timescale (∼1 min) for each brain voxel by measuring the concordance of dynamic functional connectivity (DFC) over time, compared between association and unimodal regions, and established its reliability using test-retest resting-state fMRI data of adults from an open dataset. After the measure of functional stability was established, we further employed another fMRI open dataset which included movie-watching and resting-state data of children and adolescents, to explore how stability was modified by natural viewing from its intrinsic form, with specific focus on the associative and primary visual cortices. The results showed that high-order association regions, especially the default mode network, demonstrated high stability during resting-state scans, while primary sensory-motor cortices revealed relatively lower stability. During movie watching, stability in the primary visual cortex was decreased, which was associated with larger DFC variation with neighboring regions. By contrast, higher-order regions in the ventral and dorsal visual stream demonstrated increased stability. The distribution of functional stability and its modification describes a profile of the brain's stability property, which may be useful reference for examining distinct mental states and disorders.

This narrative review is aimed at presenting the most recent evidence on the association between attention-deficit/hyperactivity disorder (ADHD) and obesity. The review is informed by previous relevant systematic reviews and a search in Pubmed and PsycINFO up to 1 August 2019. Although the association between ADHD and obesity would seem, at first, paradoxical, in the past two decades there has been an increasing number of studies on this topic. The present review shows that there is meta-analytic evidence supporting a significant association between these two conditions, at least in adults. Growing evidence is also being published on the genetic and environmental factors underlying the association. However, the cause-effects paths, as well as the exact mechanisms explaining the association, remain unclear. Additionally, empirical evidence guiding the management/treatment of patients with the two conditions is still limited. Therefore, after almost 20 years from the first report of a link between ADHD and obesity, this association continues to be puzzling.

Parental Reflective Functioning is a parent's capacity to infer mental states in herself and her child. Parental Reflective Functioning is linked to the quality of parent-child attachment and promotes parent-child mutual emotion regulation. We examined neural correlates of parental reflective functioning and their relationship to physical abuse. Participants were mothers with (n = 26) and without (n = 22) history of childhood physical abuse. Parental reflective functioning was assessed by coding transcripts of maternal narrative responses on interviews. All mothers also underwent magnetic resonance imaging while watching video clips of children during mother-child separation and play. Parental reflective functioning was significantly lower among mothers with histories of childhood physical abuse. When mothers without history of childhood physical abuse watched scenes of separation versus play, brain activation was positively correlated with parental reflective functioning in the ventromedial prefrontal cortex, and negatively associated with the dorsolateral prefrontal cortex and insula. These associations were not present when limiting analyses to mothers reporting abuse histories. Regions subserving emotion regulation and empathy were associated with parental reflective functioning; yet these regions were not featured in maltreated mothers. These data suggest that childhood physical abuse exposure may alter the psychobiology that is linked to emotional comprehension and regulation.

A critical task in psychotherapy research is identifying the conditions within which treatment benefits can be replicated and outside of which those benefits are reduced. We tested the robustness of beneficial effects found in two previous trials of the modular Child STEPs treatment program for youth anxiety, depression, trauma, and conduct problems. We conducted a randomized trial, with two significant methodological changes from previous trials: (a) shifting from cluster- to person-level randomization, and (b) shifting from individual to more clinically feasible group-based consultation with STEPs therapists. Fifty community clinicians from multiple outpatient clinics were randomly assigned to receive training and consultation in STEPs (n = 25) or to provide usual care (UC; n = 25). There were 156 referred youths-ages 6-16 (M = 10.52, SD = 2.53); 48.1% male; 79.5% Caucasian, 12.8% multiracial, 4.5% Black, 1.9% Latino, 1.3% Other-who were randomized to STEPs (n = 77) or UC (n = 79). Following previous STEPs trials, outcome measures included parent- and youth-reported internalizing, externalizing, total, and idiographic top problems, with repeated measures collected weekly during treatment and longer term over 2 years. Participants in both groups showed statistically significant improvement on all measures, leading to clinically meaningful problem reductions. However, in contrast to previous trials, STEPs was not superior to UC on any measure. As with virtually all treatments, the benefits of STEPs may depend on the conditions-for example, of study design and implementation support-in which it is tested. Identifying those conditions may help guide appropriate use of STEPs, and other treatments, in the future.

BACKGROUND:Identifying risk factors of individuals in a clinical-high-risk state for psychosis are vital to prevention and early intervention efforts. Among prodromal abnormalities, cognitive functioning has shown intermediate levels of impairment in CHR relative to first-episode psychosis and healthy controls, highlighting a potential role as a risk factor for transition to psychosis and other negative clinical outcomes. The current study used the AX-CPT, a brief 15-min computerized task, to determine whether cognitive control impairments in CHR at baseline could predict clinical status at 12-month follow-up. METHODS:Baseline AX-CPT data were obtained from 117 CHR individuals participating in two studies, the Early Detection, Intervention, and Prevention of Psychosis Program (EDIPPP) and the Understanding Early Psychosis Programs (EP) and used to predict clinical status at 12-month follow-up. At 12 months, 19 individuals converted to a first episode of psychosis (CHR-C), 52 remitted (CHR-R), and 46 had persistent sub-threshold symptoms (CHR-P). Binary logistic regression and multinomial logistic regression were used to test prediction models. RESULTS:Baseline AX-CPT performance (d-prime context) was less impaired in CHR-R compared to CHR-P and CHR-C patient groups. AX-CPT predictive validity was robust (0.723) for discriminating converters v. non-converters, and even greater (0.771) when predicting CHR three subgroups. CONCLUSIONS:These longitudinal outcome data indicate that cognitive control deficits as measured by AX-CPT d-prime context are a strong predictor of clinical outcome in CHR individuals. The AX-CPT is brief, easily implemented and cost-effective measure that may be valuable for large-scale prediction efforts.