Probing midbrain dopamine function in pediatric obsessive-compulsive disorder via neuromelanin-sensitive magnetic resonance imaging.

Obsessive-compulsive disorder (OCD) is an impairing psychiatric condition, which often onsets in childhood. Growing research highlights dopaminergic alterations in adult OCD, yet pediatric studies are limited by methodological constraints. This is the first study to utilize neuromelanin-sensitive MRI as a proxy for dopaminergic function among children with OCD. N = 135 youth (6-14-year-olds) completed high-resolution neuromelanin-sensitive MRI across two sites; n = 64 had an OCD diagnosis. N = 47 children with OCD completed a second scan after cognitive-behavioral therapy. Voxel-wise analyses identified that neuromelanin-MRI signal was higher among children with OCD compared to those without (483 voxels, permutation-corrected p = 0.018). Effects were significant within both the substania nigra pars compacta (p = 0.004, Cohen's d = 0.51) and ventral tegmental area (p = 0.006, d = 0.50). Follow-up analyses indicated that more severe lifetime symptoms (t = -2.72, p = 0.009) and longer illness duration (t = -2.22, p = 0.03) related to lower neuromelanin-MRI signal. Despite significant symptom reduction with therapy (p < 0.001, d = 1.44), neither baseline nor change in neuromelanin-MRI signal associated with symptom improvement. Current results provide the first demonstration of the utility of neuromelanin-MRI in pediatric psychiatry, specifically highlighting in vivo evidence for midbrain dopamine alterations in treatment-seeking youth with OCD. Neuromelanin-MRI likely indexes accumulating alterations over time, herein, implicating dopamine hyperactivity in OCD. Given evidence of increased neuromelanin signal in pediatric OCD but negative association with symptom severity, additional work is needed to parse potential longitudinal or compensatory mechanisms. Future studies should explore the utility of neuromelanin-MRI biomarkers to identify early risk prior to onset, parse OCD subtypes or symptom heterogeneity, and explore prediction of pharmacotherapy response.

Common caregiver illness representations in the context of family-based treatment: Commentary on Marchetti and Sawrikar (2023).

In their systematic review on parent illness representations in their children with anorexia nervosa (AN), Marchetti and Sawrikar (International Journal of Eating Disorders, 2023) integrate past research on the parental experience of the illness, investigating whether the Common Sense Model of Self-Regulation (CSM) is a useful framework for understanding parental responses to AN. Given that family-based treatment (FBT) is a first-line treatment for adolescents with eating disorders and is based upon integrating parents into the treatment process, it is especially relevant to explore how parent illness representations may impact FBT. In this commentary, we describe how FBT is designed to support parents and address many of the common unhelpful beliefs and emotions associated with parenting an adolescent with AN. We include specific examples of how parents can be supported within FBT as manualized. We also examine parental representations that may not be addressed by FBT, and how these may impact treatment outcomes in FBT, possibly via the impact of expressed emotion. Future research is needed to determine if modifications to FBT are required to address parental representations of the illness. We end by expanding upon Marchetti and Sawrikar's suggestions on how treatment could be extended to better support parents as necessary.

Obsessive-Compulsive Symptoms: Baseline Prevalence, Comorbidity, and Implications in a Clinically Anxious Pediatric Sample.

Subclinical symptoms of obsessive-compulsive disorder (i.e., obsessive compulsive symptoms, or "OCS") cause functional impairment, including for youth without full-syndrome OCD. Further, despite high rates of OCS in youth with anxiety disorders, knowledge of OCS in the context of specific anxiety disorders is limited. The present study seeks to: (1) compare OCS in pediatric patients with anxiety disorders and healthy youth, (2) determine which categorical anxiety disorder(s) associate most with OCS, and (3) determine relationships between OCS with anxiety severity and impairment. Data on OCS, anxiety, and functional impairment were collected from 153 youth with anxiety disorders and 45 healthy controls, ages 7-17 years (M = 11.84, SD = 3.17). Findings indicated that patients had significantly more OCS than healthy controls. Among patients, GAD was a significant predictor of OCS as well as OCD risk. These results suggest that OCS should be a primary diagnostic and treatment consideration for youth who present in clinical settings with GAD.

Pilot Study of Self-Distancing Augmentation to Exposure Therapy for Youth Anxiety.

This pilot examines a self-distancing augmentation to exposure. Nine youth with anxiety (ages 11-17; 67% female) completed treatment. The study employed a brief (eight session) crossover ABA/BAB design. Exposure difficulty, engagement with exposure, and treatment acceptability were examined as primary outcome variables. Visual inspection of plots indicated that youth completed more difficult exposures during augmented exposure sessions [EXSD] than classic exposure sessions [EX] by therapist- and youth-report and that therapists reported higher youth engagement during EXSD than EX sessions. There were no significant differences between EXSD and EX on exposure difficulty or engagement by therapist- or youth-report. Treatment acceptability was high, although some youth reported that self-distancing was "awkward". Self-distancing may be associated with increased exposure engagement and willingness to complete more difficult exposures, which has been linked to treatment outcomes. Future research is needed to further demonstrate this link, and link self-distancing to outcomes directly.

Exposure-Focused CBT Outperforms Relaxation-Based Control in an RCT of Treatment for Child and Adolescent Anxiety.

OBJECTIVE: The relative contribution of individual cognitive behavioral therapy (CBT) components to treatment outcomes for child anxiety disorders (CADs) is unclear. Recent meta-analyses suggest that exposure may be the primary active ingredient in CBT for CADs, and that relaxation may be relatively less effective. This brief report tests the hypothesis that exposure-focused CBT (EF-CBT) would outperform a relaxation-based active therapy control (Relaxation Mentorship Training; RMT) for the treatment of CADs. METHOD: Participants were 102 youth with CADs (mean age = 11.91, 26 males; 76.4% White, 14.7% Multiracial, 3.9% Black, 3.9% Asian, 0.9% other/do not wish to identify) as part of an ongoing neuroimaging randomized controlled trial. Participants were randomly assigned (ratio 2:1) to receive 12 sessions of EF-CBT (n = 70) or RMT (n = 32). Clinical improvement was measured at Week 12 (Clinical Global Impression - Improvement scale; CGI-I); treatment response was defined as receiving a rating of "very much" or "much improved" on the CGI-I. Anxiety severity was measured at Weeks 1, 6, 9, 12 (Pediatric Anxiety Rating Scale; PARS). Outcome measures were completed by an independent evaluator unaware of condition. RESULTS: EF-CBT exhibited 2.98 times higher odds of treatment completion than RMT; 13 treatment non-completers were included in analyses. Estimated treatment response rates were higher for EF-CBT (57.3%) than for RMT (19.2%). Longitudinal analyses indicated that EF-CBT was associated with faster and more pronounced anxiety reductions than RMT on the PARS (Hedges' g = .77). CONCLUSIONS: Results suggest that EF-CBT without relaxation is effective for CADs, and more effective than a relaxation-based intervention.

Treating Social Anxiety in an Era of Social Distancing: Adapting Exposure Therapy for Youth During COVID-19.

The novel coronavirus (COVID-19) pandemic has caused widespread disruption to our traditional way of life and mental health therapy has not been spared. A combination of increased anxiety, diminished social opportunities, and the shift to telehealth service provision presents particular challenges for the treatment of social anxiety in youth, which relies heavily on exposures to social situations with peers, adults, or other feared social stimuli. The objective of this commentary is to provide guidance to clinicians working with youth with social anxiety on how to maintain ethical, evidence-informed provision of exposure therapy in light of these unusual circumstances. We first present an overview of how COVID-19 may uniquely impact youth with social anxiety and highlight the importance of continuing to provide exposure-based treatments during this time. We then discuss guiding principles for delivering exposure therapy during COVID-19. We focus on providing practical examples of how common social anxiety exposures can be adapted and delivered successfully through telehealth while abiding by COVID-19 social distancing guidelines. Finally, we discuss key recommendations to assist clinicians in moving treatment forward while considering changing safety guidelines pertaining to COVID-19.

Development of a Brief Group CBT Intervention to Reduce COVID-19 Related Distress Among School-Age Youth.

School-aged youth have been significantly impacted by the COVID-19 pandemic. The effects of the pandemic will likely have long-standing effects on the well-being of youth, and access to mental health care is even more critical during this time. For the past 5 years, TRAILS (Transforming Research into Action to Improve the Lives of Students) has been working throughout the state to increase utilization of evidence-based mental health practices among K-12 school mental health professionals (SMHPs). By leveraging SMHPs who are widely accessible to students, TRAILS seeks to improve youth access to effective mental health care and reduce current mental health inequities. In March 2020, TRAILS responded to the COVID-19 pandemic by developing a group manual designed to be delivered virtually by SMHPs to help students develop effective coping skills to mitigate the impact of COVID-19. TRAILS focuses on promoting use of CBT and mindfulness, as these skills are ideally suited for school-based delivery, and thus the new manual, Coping with COVID-19 (CC-19), was grounded in these modalities. This article will describe the design, development, and deployment of the CC-19 program to address the mental health needs of students in the context of the pandemic. Early acceptability and penetration data will also be discussed.

Student mental health outcomes of a clustered SMART for developing an adaptive implementation strategy to support school-based CBT delivery.

PURPOSE: Most youth experiencing anxiety/depression lack access to evidence-based mental health practices (EBPs). School-delivered care improves access, and various support can help school professionals (SPs; school social workers, counselors) deliver EBPs, like Cognitive Behavioral Therapy (CBT). Understanding implementation strategies' impact on downstream mental health outcomes is crucial to scaling up EBPs to address the treatment gap, but it has rarely been assessed. METHODS: This paper compares implementation strategies' impact on change in student outcomes, collected as exploratory outcomes from a type III hybrid implementation-effectiveness trial. A clustered, sequential, multiple-assignment randomized trial design was used, which embedded four implementation supports that differentially sequence three implementation strategies, Replicating Effective Programs (REP), Coaching, and Facilitation. Prior to the first randomization, N = 169 SPs from 94 Michigan high schools each identified up to 10 students whom they believed could benefit from CBT and facilitated student survey completion. Changes in students' depression (Patient Health Questionnaire-9, modified for teens) and anxiety symptoms (Generalized Anxiety Disorder-7) over 10 months were compared across the four sequences of implementation support using a generalization of a marginal, weighted least squares approach developed for a clustered SMARTs. RESULTS: Small, non-clinically significant reductions in symptoms over the study period were found. Pairwise comparisons found no significant differences in symptom change across the four implementation strategies. The difference in the estimated mean PHQ-9 T/GAD-7 scores between the least and the most intensive strategies (REP vs. REP+Coaching+Facilitation) was 1.04 (95%CI = -0.95, 3.04) for depression and 0.82 (95%CI = -0.89, 2.52) for anxiety. DISCUSSION: No difference in symptom change was found across the four implementation strategies. Multiple forms of implementation support may be useful for improving student mental health outcomes. TRIAL REGISTRATION: NCT03541317-Registered on 29 May 2018 on ClinicalTrials.gov PRS.

Individual and organizational factors as predictors of early evidence-based practice adoption in Michigan high schools: Baseline data from an implementation trial.

Background: Adolescents increasingly access mental health services in schools. School mental health professionals (SPs; school counselors, social workers, etc.) can offer evidence-based mental health practices (EBPs) in schools, which may address access gaps and improve clinical outcomes. Although some studies have assessed factors associated with EBP adoption in schools, additional research focusing on SP- and school-level factors is warranted to support EBP implementation as SPs' mental health delivery grows. Methods: Baseline data were collected from SPs at Michigan high schools participating in a statewide trial to implement SP-delivered cognitive behavioral therapy (CBT) to students. Models examined factors associated with attitudes about EBPs, implementation climate, and implementation leadership, and their associations with CBT knowledge, training attendance, and pre-training CBT delivery. Results: One hundred ninety-eight SPs at 107 schools (87%) completed a baseline survey. The mean Evidence-Based Practice Attitude Scale (EBPAS) total score was 2.9, and school-aggregated mean scores of the Implementation Climate Scale (ICS) and Implementation Leadership Scale (ILS) were 1.83 and 1.77, respectively, all on a scale ranging from 0 (low) to 4 (high). ICS and ILS scores were lower than typically reported in clinical settings, while EBPAS scores were higher. School characteristics were not significantly associated with EBPAS, ICS, or ILS scores, but scores did differ by SP role. Higher EBPAS scores were associated with more CBT knowledge (average marginal effect for 1 SD change [AME] = 0.15 points) and a higher probability of training completion (AME = 8 percentage points). Higher ICS scores were associated with a higher probability of pre-training CBT delivery (AME = 6 percentage points), and higher ILS scores were associated with higher probability of training completion (AME = 10 percentage points). Conclusions: Our findings suggest that SPs' attitudes toward EBPs and organizational support were positively associated with early signs of implementation success. As schools increasingly fill the adolescent mental healthcare access gap, efforts to strengthen both provider attitudes toward EBP and strategic organizational factors supporting EBP delivery will be key to encouraging EBP uptake in schools. Plain Language Summary: Schools are an important setting in which adolescents receive mental healthcare. We need to better understand how to implement evidence-based practices (EBPs) in this setting to improve student mental health. This study examined the attitudes and perceptions of school professionals (SPs) as key contributors to the implementation of a particular EBP, the delivery of cognitive behavioral therapy (CBT) in schools. The study found that implementation climate and leadership scores in participating schools were lower than scores typically reported in clinical settings, while scores for SP attitudes about EBP adoption were higher than typical scores in clinical settings. Results further suggest that SPs with more positive attitudes toward EBPs are more knowledgeable of CBT and more likely to complete a 1-day CBT training. We also found that higher implementation climate scores were associated with SPs reporting pre-training CBT delivery (although this association was not statistically significant), and more implementation leadership was associated with SPs completing the CBT training. These findings suggest that SP attitudes toward EBPs and organizational support in schools are positively associated with early signs of implementation success. Early, low-intensity efforts to (1) improve SP attitudes about mental health EBPs, and (2) increase schools' support for implementation may scaffold more intensive implementation efforts in schools down the road.

Error-related brain activity associated with obsessive-compulsive symptoms in youth.

BACKGROUND: Subclinical obsessive-compulsive symptoms (OCS) are common in children, and increase risk for later onset of obsessive-compulsive disorder (OCD). In pediatric patients with OCD, neuroimaging research implicates altered neural mechanisms for error-processing, but whether abnormal brain response occurs with subclinical OCS remains poorly understood. METHODS: Using functional magnetic resonance imaging (fMRI), 113 youth (8-18 years; 45 female) from a community sample were scanned during an error-eliciting Go/No-Go task. OCS were assessed dimensionally using the obsessive-compulsive subscale of the Child Behavior Checklist. The association between OCS scores and error-related brain activity was examined at the whole-brain level. RESULTS: Lower OCS scores associated with stronger response to errors in dorsal anterior cingulate cortex (dACC), caudate, putamen, thalamus, and occipital cortex. Additionally, lower OCS related to higher capacity for inhibitory control, as indexed by greater accuracy on No-Go trials during fMRI scanning. The relationship between lower OCS and better accuracy on No-Go trials was mediated by greater error-related dACC activity. CONCLUSIONS: The inverse relationship between OCS and error-related activity in the dACC and extended cortical-striatal-thalamic circuitry may index an adaptive process by which subclinical OCS are minimized in youth. Further, these results identify an observable pattern of brain activity that tracks with subclinical OCS severity. Understanding the link between neural networks for error processing and the normal to abnormal range of OCS may pave the way for brain-based strategies to identify children who are more likely to develop OCD and enable the targeting of preventive strategies to reduce risk.

Developing a statewide network of coaches to support youth access to evidence-based practices.

Background: A national shortage of mental health providers for youth exists in the United States. Implementation support for mental health services in schools, where students are most likely to access care, can help to fill these gaps. Coaching consists of in vivo modeling and support during service delivery and is effective in supporting the implementation of evidence-based practices (EBPs). This implementation report describes the recruitment and training of community providers to become coaches as a part of a modified train-the-trainer model of implementation support. Method: An EBP implementation program, Transforming Research into Action to Improve the Lives of Students (TRAILS), trained community providers in Michigan to increase knowledge of cognitive behavioral therapy (CBT) and position them as coaches in schools. The development of the coach network involved five stages prior to the initiation of a randomized controlled trial: (1) recruitment, (2) a one-day clinical training, (3) 12 weeks of individualized consultation, (4) evaluation, and (5) training in the coaching protocol. Results: A total of 347 individuals attended an initial training, and 187 were paired with a consultant. Eighty-six clinicians from 47 of Michigan's 83 counties successfully became coaches by completing all required elements of training. Coaches showed significant improvements in the use and knowledge of CBT across consultation. Conclusion: Statewide networks of trained mental health professionals can address gaps in mental healthcare for youth. This article demonstrates one strategy for strengthening and leveraging community expertise to support the implementation of EPBs in schools. Plain Language Summary: Although youth face many barriers in accessing effective mental health care, schools are one setting where they can more easily receive treatment. Research shows that training and supports are needed for school mental health professionals to provide effective care. Coaching, which involves in vivo support for school mental health professionals, is one helpful strategy. We describe the process of recruiting and training community clinicians to become coaches. The Transforming Research into Action to Improve the Lives of Students (TRAILS) program successfully recruited and trained a network of 86 community clinicians to become coaches. Clinicians attended two day-long trainings and participated in 12 weeks of personalized consultation. Clients to whom these clinicians provided CBT showed significant symptom improvement. Clinicians also reported that they increased their knowledge and use of core CBT strategies, including psychoeducation, exposure, and behavioral activation. Community mental health professionals who are trained as coaches can address gaps in access to care for youth. We demonstrate one strategy for strengthening and leveraging clinicians' knowledge of CBT to support the school-based implementation of CBT.

Primary aim results of a clustered SMART for developing a school-level, adaptive implementation strategy to support CBT delivery at high schools in Michigan.

BACKGROUND: Schools increasingly provide mental health services to students, but often lack access to implementation strategies to support school-based (and school professional [SP]) delivery of evidence-based practices. Given substantial heterogeneity in implementation barriers across schools, development of adaptive implementation strategies that guide which implementation strategies to provide to which schools and when may be necessary to support scale-up. METHODS: A clustered, sequential, multiple-assignment randomized trial (SMART) of high schools across Michigan was used to inform the development of a school-level adaptive implementation strategy for supporting SP-delivered cognitive behavioral therapy (CBT). All schools were first provided with implementation support informed by Replicating Effective Programs (REP) and then were randomized to add in-person Coaching or not (phase 1). After 8 weeks, schools were assessed for response based on SP-reported frequency of CBT delivered to students and/or barriers reported. Responder schools continued with phase 1 implementation strategies. Slower-responder schools (not providing ≥ 3 CBT components to ≥10 students or >2 organizational barriers identified) were re-randomized to add Facilitation to current support or not (phase 2). The primary aim hypothesis was that SPs at schools receiving the REP + Coaching + Facilitation adaptive implementation strategy would deliver more CBT sessions than SPs at schools receiving REP alone. Secondary aims compared four implementation strategies (Coaching vs no Coaching × Facilitation vs no Facilitation) on CBT sessions delivered, including by type (group, brief and full individual). Analyses used a marginal, weighted least squares approach developed for clustered SMARTs. RESULTS: SPs (n = 169) at 94 high schools entered the study. N = 83 schools (88%) were slower-responders after phase 1. Contrary to the primary aim hypothesis, there was no evidence of a significant difference in CBT sessions delivered between REP + Coaching + Facilitation and REP alone (111.4 vs. 121.1 average total CBT sessions; p = 0.63). In secondary analyses, the adaptive strategy that offered REP + Facilitation resulted in the highest average CBT delivery (154.1 sessions) and the non-adaptive strategy offering REP + Coaching the lowest (94.5 sessions). CONCLUSIONS: The most effective strategy in terms of average SP-reported CBT delivery is the adaptive implementation strategy that (i) begins with REP, (ii) augments with Facilitation for slower-responder schools (schools where SPs identified organizational barriers or struggled to deliver CBT), and (iii) stays the course with REP for responder schools. TRIAL REGISTRATION: ClinicalTrials.gov, NCT03541317 , May 30, 2018.

The Cognitive Behavioral Therapy Competence Scale (CCS): initial development and validation.

Background: Nearly one-third of youth are affected by a mental health disorder, and the majority do not receive adequate care. To improve clinical outcomes among youth, efforts have been made to train providers in evidence-based mental health practices, such as cognitive behavioral therapy (CBT). Such efforts call for valid assessment measures that can inform and evaluate training activities. Aims: This study presents the development and validation of the CBT Competence Scale (CCS), a brief self-report measure to assess provider competence for CBT delivery. Method: Participants were 387 school mental health professionals (SMHPs) working with students in Michigan, USA. Initial items (n=59) were developed to evaluate competence in delivering common elements of CBT, with competence conceptualized as covering domains of knowledge, perception, and use of CBT techniques. CCS validation proceeded in three steps: using item response theory to select the most important items for assessing knowledge, evaluating the factor structure using exploratory and then confirmatory factor analyses, and examining reliability and validity of the resultant measure. Results: The validated CCS measure consists of four dimensions of CBT competence across 33 items: Non-behavioral skills, Behavioral skills, Perceptions, and Knowledge. The CCS demonstrated excellent internal consistency and good construct-based validity. Conclusions: The CCS holds promise as a valid, informative measure of CBT competence appropriate for the school setting, with potential for application in other environments such as mental health clinics.

Grant Report on Anxiety-CBT: Dimensional Brain Behavior Predictors of CBT Outcomes in Pediatric Anxiety.

In the following grant report, we describe initial and planned work supported by our National Institute of Mental Health R01-funded, Research Domain Criteria (RDoc) informed project, "Dimensional Brain Behavior Predictors of CBT Outcomes in Pediatric Anxiety". This project examines response to cognitive behavioral therapy (CBT) in a large sample of anxiety-affected and low-anxious youth ages 7 to 18 years using multiple levels of analysis, including brain imaging, behavioral performance, and clinical measures. The primary goal of the project is to understand how brain-behavioral markers of anxiety-relevant constructs, namely acute threat, cognitive control, and their interaction, associate with CBT response in youth with clinically significant anxiety. A secondary goal is to determine whether child age influences how these markers predict, and/or change, across varying degrees of CBT response. Now in its fourth year, data from this project has informed the examination of (1) baseline (i.e., pre-CBT) anxiety severity as a function of brain-behavioral measures of cognitive control, and (2) clinical characteristics of youth and parents that associate with anxiety severity and/or predict response to CBT. Analysis of brain-behavioral markers before and after CBT will assess mechanisms of CBT effect, and will be conducted once the data collection in the full sample has been completed. This knowledge will help guide the treatment of clinically anxious youth by informing for whom and how does CBT work.

A Randomized Controlled Pilot Trial of the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders in Children.

The Unified Protocol for Transdiagnostic Treatment of Emotional Disorders in Children (UP-C) is an intervention for children aged 7 to 13 targeting high negative emotion, emotional reactivity, and emotion regulation deficits common across emotional disorders. Our objective was to collect pilot randomized controlled trial (RCT) data on the efficacy of the UP-C, comparing UP-C with an active, anxiety-focused intervention. Participants were 47 children with at least one primary anxiety disorder; approximately one half had elevated depression symptoms. Participants received either UP-C or the anxiety-focused control treatment. No condition-related differences were found with respect to diagnostic remission and anxiety symptoms. However, differences in favor of UP-C were observed with respect to treatment response at follow-up, depression symptoms, sadness dysregulation, and cognitive reappraisal. Results provide preliminary evidence that the UP-C may be at least as efficacious in treating anxiety as well-supported anxiety-specific treatment protocols and may produce greater gains in certain emotion reactivity and regulation variables.

Moderation of the relationship between the error-related negativity and anxiety by age and gender in young children: A preliminary investigation.

The error-related negativity (ERN) is a neurophysiologic response to errors that associates with anxiety. Despite the potential relevance of the ERN for understanding mechanisms of early anxiety problems in the developing brain, the relation between ERN and anxious symptoms in young children remains poorly understood. Emerging evidence suggests that ERN-anxiety associations could vary by developmental stage, but this work requires replication and consideration of gender effects, given earlier maturation of the ERN and higher rates of anxiety problems in girls relative to boys. To address this gap, the ERN was collected in 49 preschool- to school-aged children (ages 4-9; 26 girls) sampled across a wide range of anxiety severity. Regression analyses revealed that ERN - anxiety associations depended on age and gender. Specifically, larger (more negative) ERN associated with more anxiety in older girls, whereas smaller ERN associated with more anxiety symptoms in younger girls. No ERN-anxiety association was found in boys. These findings suggest that age and gender moderate the direction of the relation between ERN and anxiety in early childhood and could have important implications for the development of ERN-based risk identification and targeted treatment strategies tailored to individual children.

Intolerance of uncertainty in youth with obsessive-compulsive disorder and generalized anxiety disorder: A transdiagnostic construct with implications for phenomenology and treatment.

Obsessive-compulsive disorder (OCD) and generalized anxiety disorder (GAD) are early-onset disorders with significant overlapping phenomenology, especially in young patients who, due to developmental stage, may have difficulty recognizing obsessions and worries as unrealistic or excessive. Shared phenomenology and high rates of comorbidity between OCD and GAD raise the possibility of common underlying processes, and recent work has focused on intolerance of uncertainty (IU) as a reasonable candidate. With an emphasis on the youth literature, we review the phenomenological overlap between OCD and GAD, how symptoms may relate to IU, and how IU may be measured. We review existing psychotherapeutic treatments and discuss how understanding the role of IU may assist in the development of novel psychotherapeutic strategies to improve treatment outcomes. Neuroimaging studies of IU in OCD and GAD are also discussed and suggestions for further research are offered. We conclude that, consistent with Research Domain Criteria (RDoC), IU represents a transdiagnostic construct with a demonstrable neural basis that could be targeted to improve existing treatments for these disorders.

Wearable sensors detect childhood internalizing disorders during mood induction task.

There is a significant need to develop objective measures for identifying children under the age of 8 who have anxiety and depression. If left untreated, early internalizing symptoms can lead to adolescent and adult internalizing disorders as well as comorbidity which can yield significant health problems later in life including increased risk for suicide. To this end, we propose the use of an instrumented fear induction task for identifying children with internalizing disorders, and demonstrate its efficacy in a sample of 63 children between the ages of 3 and 7. In so doing, we extract objective measures that capture the full six degree-of-freedom movement of a child using data from a belt-worn inertial measurement unit (IMU) and relate them to behavioral fear codes, parent-reported child symptoms and clinician-rated child internalizing diagnoses. We find that IMU motion data, but not behavioral codes, are associated with parent-reported child symptoms and clinician-reported child internalizing diagnosis in this sample. These results demonstrate that IMU motion data are sensitive to behaviors indicative of child psychopathology. Moreover, the proposed IMU-based approach has increased feasibility of collection and processing compared to behavioral codes, and therefore should be explored further in future studies.

Developmental Neuroimaging in Pediatric Obsessive-Compulsive Disorder.

PURPOSE OF REVIEW: This review examines emerging neuroimaging research in pediatric obsessive compulsive disorder (OCD) and explores the possibility that developmentally sensitive mechanisms may underlie OCD across the lifespan. RECENT FINDINGS: Diffusion tensor imaging (DTI) studies of pediatric OCD reveal abnormal structural connectivity within frontal-striato-thalamic circuity (FSTC). Resting-state functional magnetic resonance imaging (fMRI) studies further support atypical FSTC connectivity in young patients, but also suggest altered connectivity within cortical networks for task-control. Task-based fMRI studies show that hyper- and hypo-activation of task control networks may depend on task difficulty in pediatric patients similar to recent findings in adults. SUMMARY: This review suggests that atypical neurodevelopmental trajectories may underlie the emergence and early course of OCD. Abnormalities of structural and functional connectivity may vary with age, while functional engagement during task may vary with age and task complexity. Future research should combine DTI, resting-state fMRI and task-based fMRI methods and incorporate longitudinal designs to reveal developmentally sensitive targets for intervention.