Novel Assessment of the Impact of Irritability on Physiological and Psychological Frustration Responses in Adolescents.

OBJECTIVE: Irritability, typically defined as a proneness to anger, particularly in response to frustration, falls at the intersection of emotion and disruptive behavior. Despite well-defined translational models, there are few convergent findings regarding the pathophysiology of irritability. Most studies utilize computer-based tasks to examine neural responses to frustration, with little work examining stress-related responding to frustration in social contexts. The present study is the first to utilize the novel Frustration Social Stressor for Adolescents (FSS-A) to examine associations between adolescent irritability and psychological and physiological responses to frustration. METHOD: The FSS-A was completed by a predominantly male, racially, ethnically, and socioeconomically diverse sample of 64 12- to 17-year-olds, who were originally recruited as children with varying levels of irritability. Current irritability was assessed using the Multidimensional Assessment Profiles-Temper Loss scale (MAP-TL-Youth). Adolescents rated state anger and anxiety before and after the FSS-A, and usable salivary cortisol data were collected from 43 participants. RESULTS: Higher MAP-TL-Youth scores were associated with greater increases in anger during the FSS-A, but not increases in anxiety, or alterations in cortisol. Pre-task state anger negatively predicted the slope of the rise in cortisol observed in anticipation of the FSS-A. CONCLUSIONS: Results provide support for unique associations between adolescent irritability and anger during, and in anticipation of, frustrating social interactions. Such findings lay a foundation for future work aimed at informing physiological models and intervention targets.

Characterizing the spectrum of irritability in preadolescence: Dimensional and pragmatic applications.

OBJECTIVES: Characterize the dimensional spectrum of preadolescent (PA) irritability, a robust transdiagnostic vulnerability marker, using the youth version of the Multidimensional Assessment Profiles Temper Loss (MAPS-TL-Youth) scale including common and with developmentally specific items. Based on this, derive and validate a clinically optimized irritability screener to flag psychopathology risk in preadolescents. METHODS: The normal:abnormal irritability spectrum was modeled using MAPS-TL-Youth data from the Multidimensional Assessment of Preschoolers Study (MAPS) Study PA wave (n = 340) via item response theory. Both cross-cutting core items from the MAPS scales and developmentally specific items were used to generate this dimension. Stepwise logistic regression was then used to optimize MAPS-TL-Youth irritability items in relation to Kiddie Schedule of Affective Disorders and Schizophrenia impairment to generate a clinically optimized irritability screener. Receiver operator characteristic analysis identified the irritability threshold for the screener. For the first time, youth self-report of their own irritability on the MAPS-TL was also modeled via the MAPS-TL-Youth-Self-Report (MAPS-TL-Youth-SR). RESULTS: Irritability was unidimensional and ranged from mild and common to severe and rare behaviors. Developmentally specific items allowed detection of more severe irritability. Items for the screener were identified in relation to concurrent impairment. These included low frustration tolerance and pathognomonic severe behaviors. The clinically optimized screener demonstrated very good sensitively (87%) and specificity (81%) in regard to concurrent irritability-related DSM disorders. Modeling of the MAPS-TL-Youth-SR yielded similar results. CONCLUSION: Characterizing the normal: abnormal spectrum of irritability in preadolescence advances application of Research Domain Criteria methods to this developmental period. This foundational work yielded two developmentally specified tools for irritability characterization in preadolescence: a nuanced dimensional scale to precisely characterize the full normal-abnormal irritability spectrum, and a pragmatic, clinically optimized screener suitable for real world use. Future application in mechanistic and clinical studies will be important for establishing validity and incremental utility.

Developmentally specified characterization of the irritability spectrum at early school age: Implications for pragmatic mental health screening.

OBJECTIVES: Developmentally specified measures that identify clinically salient irritability are needed for early school-age youth to meaningfully capture this transdiagnostic risk factor for psychopathology. Thus, the current study modeled the normal:abnormal irritability spectrum and generated a clinically optimized screening tool for this population. METHODS: The irritability spectrum was modeled via the youth version of the Multidimensional Assessment Profile Scales-Temper Loss Scale (MAPS-TL-Youth) in children (n = 474; 6.0-8.9 years) using item response theory (IRT). Both cross-cutting core irritability items from the early childhood version and new developmentally specific items were included. Items uniquely associated with impairment were identified and used to derive a brief, clinically optimized irritability screener. Longitudinal data were then utilized to test the predictive utility of this clinically optimized screener in preadolescence (n = 348; 8.0-12.9 years). RESULTS: Most children exhibit irritability regularly, but daily occurrence was rare. Of the top 10 most severe items from the IRT analyses, 9 were from the developmentally specific items added for the MAPS-TL Youth version. Two items associated with concurrent impairment were identified for the clinically optimized irritability screener ("Become frustrated easily" and "Act irritable"). The MAPS-TL-Youth clinically optimized screener demonstrated good sensitivity (69%) and specificity (84%) in relation to concurrent DSM 5 irritability-related diagnoses. Youth with elevated scores on the screener at early school age (ESA) had more than 7x greater odds of irritability-related psychopathology at pre-adolescence. CONCLUSIONS: The MAPS-TL-Youth characterized the developmental spectrum of irritability at ESA and a clinically optimized screener showed promise at predicting psychopathology risk. Rigorous testing of clinical applications is a critical next step.

A pragmatic, clinically optimized approach to characterizing adolescent irritability: Validation of parent- and adolescent reports on the Multidimensional Assessment Profile Scales-Temper Loss Scale.

OBJECTIVES: Heightened irritability in adolescence is an impairing symptom that can lead to negative outcomes in adulthood, but effective screening tools are lacking. This study aimed to derive clinically-optimized cutoff scores using the Multidimensional Assessment Profile Scales-Temper Loss (MAPS-TL) to pragmatically identify adolescents with impairing irritability. METHODS: A diverse sample of 79 adolescents and their parents completed the MAPS-TL-Youth version. Stepwise logistic regression analyses were used to determine the items associated with impairment, and receiver operator characteristic (ROC) analyses were conducted to derive optimal cutoff scores. RESULTS: Three parent-report items (become frustrated easily, angry/irritable/grouchy throughout the day, difficulty calming down when angry) and two youth-report items (hit/shove/kick when lost temper, difficulty calming down when angry) were strongly associated with impairment. Optimal cutoff scores garnered very good sensitivity (91%, 73%) and specificity (77%, 75%) for the parent- and youth-report versions respectively. Scores above these cutoffs were associated with increased internalizing and externalizing problems and lower overall quality of life. CONCLUSIONS: The MAPS-TL clinically optimized irritability scores show preliminary validity for implementation in practical settings to efficiently identify adolescents who need additional evaluation and/or intervention. Further research is important to validate these cutoff scores with larger population-based samples and real-world settings.

Mediating role of the default mode network on parental acceptance/warmth and psychopathology in youth.

Humans are reliant on their caregivers for an extended period of time, offering numerous opportunities for environmental factors, such as parental attitudes and behaviors, to impact brain development. The default mode network is a neural system encompassing the medial prefrontal cortex, posterior cingulate cortex, precuneus, and temporo-parietal junction, which is implicated in aspects of cognition and psychopathology. Delayed default mode network maturation in children and adolescents has been associated with greater general dimensional psychopathology, and positive parenting behaviors have been suggested to serve as protective mechanisms against atypical default mode network development. The current study aimed to extend the existing research by examining whether within- default mode network resting-state functional connectivity would mediate the relation between parental acceptance/warmth and youth psychopathology. Data from the Adolescent Brain and Cognitive Development study, which included a community sample of 9,366 children ages 8.9-10.9 years, were analyzed to test this prediction. Results demonstrated a significant mediation, where greater parental acceptance/warmth predicted greater within- default mode network resting-state functional connectivity, which in turn predicted lower externalizing, but not internalizing symptoms, at baseline and 1-year later. Our study provides preliminary support for the notion that positive parenting behaviors may reduce the risk for psychopathology in youth through their influence on the default mode network.

Parental Factors That Confer Risk and Resilience for Remote Learning Outcomes During the COVID-19 Pandemic Among Children With and Without Attention-Deficit/Hyperactivity Disorder.

OBJECTIVE: To test whether parental factors including internalizing symptoms, parenting style, and confidence in assisting with remote learning conferred risk/resilience for children with/without ADHD's learning and emotional outcomes during the COVID-19 pandemic. METHOD: 291 parents of children (ages 6-13; n = 180 males) with (n = 148) and without ADHD completed questionnaires online (April-July 2020). RESULTS: Structural equation modeling identified parental risk/resilience factors. Across groups, risk predicted greater difficulties with learning, internalizing and externalizing symptoms, while parent confidence in educating their child predicted better outcomes. A positive association was observed between parental involvement and child difficulties, which was stronger in families of children with ADHD. Children with/without ADHD did not differ in remote learning difficulties. CONCLUSION: Parent factors impacted child emotional and learning outcomes during the pandemic. With increases in remote learning practices, there is a need for improved understanding of how parent factors impact outcomes of children with/without ADHD.

Editorial: From Bipolar Disorder to Disruptive Mood Dysregulation Disorder: Challenges to Diagnostic and Treatment Specificity in Traumatized Youths.

This valuable contribution by Findling et al. reports on trends in diagnostic patterns since the inclusion of disruptive mood dysregulation disorder (DMDD) in the DSM-5. As the authors note, the introduction of the DMDD diagnosis was designed to address the problematic over-diagnosis of bipolar disorder and the associated rise in antipsychotic and polypharmacy use in youths.1 Using a large, national, electronic health record database (n = 14,157), this study showed a clear increase in the treated prevalence of DMDD from 2016 to 2018 (0.08-0.35%, p < .0001) coupled with a decrease in the treated prevalence of bipolar disorder from 2015 to 2018 (0.42%-0.36%, p < .0001).1 This suggests that the introduction of DMDD did seem to achieve the aim of reducing the rates of bipolar diagnoses. In what is discouraging but not surprising news, the study demonstrates a troubling increase in the use of antipsychotics (58.9% DMDD vs 51.0% bipolar disorder) and polypharmacy in the DMDD cohort compared to the bipolar disorder cohort (45.0% DMDD vs 37.4% bipolar disorder).1.

Understanding Phasic Irritability: Anger and Distress in Children's Temper Outbursts.

Pediatric irritability can be highly impairing and is implicated in adverse outcomes. The phasic component, characterized by temper outbursts, is a frequent impetus to seek treatment. This study tested whether a previously described anger-distress model of tantrums applies to an outpatient sample of school-age children with clinically impairing temper outbursts (TO; 5.0-9.9 years; N = 86), and examined the clinical relevance of resulting factors through associations with measures of psychopathology, and differences between children with TO and two groups without: children with ADHD (n = 60) and healthy controls (n = 45). Factor analyses established a three-factor model: High Anger, Low Anger, Distress. These factors had unique associations with measures of irritability, externalizing problems, and internalizing problems in the TO group. Additionally, an interaction between groups and outburst factors emerged. Results provide evidence for the presence and clinical utility of the anger-distress model in children's outbursts and suggest avenues for future pediatric irritability research.

A pilot study to assess the safety, efficacy and ease of use of a novel hearing protection device for hospitalized neonates.

BACKGROUND: Loud noises in the neonatal intensive care unit (NICU) exacerbate patient cardiac and respiratory activity, disrupt sleep, and may contribute to hearing deficits, speech and language disorders, and neurodevelopmental delays among NICU graduates. AIMS: This study evaluated infant-patient tolerance and nurse ease of use of a novel frequency-selective hearing protection device, DREAMIES (NEATCap Medical, LLC). STUDY DESIGN AND SUBJECTS: Fifty neonates receiving care in a Level III NICU participated in a 2-phase prospective study. In Phase 1, 25 infants (mean 36.6 wks GA) wore DREAMIES for two consecutive 30-min periods. In Phase 2, 25 infants (mean 34.8 wks GA) wore DREAMIES between care and feeding times during an 8-h Device-On period followed by an 8-h Device-Off period for three consecutive days. OUTCOME MEASURES: Subject tolerance was defined by device-related skin irritation, vital sign measurements, and behavioral state. Device fit and ease of use were also evaluated by NICU nurses. RESULTS: No skin breakdown was reported in any infant in either phase. Only transient skin erythema was observed. Periods when infants wore DREAMIES resulted in lower heart and respiratory rates and increased sleep (P < 0.001). Nurses reported little to no difficulty in applying or removing the device. CONCLUSION: Findings suggest DREAMIES are a safe, easy to use, and effective device that reduces exposure to NICU noise, and may improve cardio-respiratory activity and promote sleep among neonatal patients. Further studies are warranted to examine longer term use and potential benefits of DREAMIES for improving outcomes in infants receiving NICU care. This trial is registered on clinicaltrials.govNCT02744066.

Self-harm and self-regulation in urban ethnic minority youth: a pilot application of dialectical behavior therapy for adolescents.

BACKGROUND: Difficulties in coping with stress and regulating emotions are transdiagnostic risk factors for self-harming behavior. Due to sociocultural stressors, ethnic minority adolescents may be at greater risk for self-regulation difficulties and self-harm. Dialectical behavior therapy for adolescents (DBT-A) frames adaptive skill acquisition as a mechanism of change, but few studies have investigated its impact on ethnic minority adolescents' self-regulation (i.e. coping, emotion regulation). Therefore, this pilot study examined relations between self-regulation and self-harm among ethnic minority adolescents and investigated changes in their self-regulation upon completing DBT-A. METHODS: A clinically referred sample of 101 ethnic minority adolescents (Mage  = 14.77; female = 69.3%) completed questionnaires about a history of self-harm, coping (DBT Ways of Coping Checklist), and emotion regulation (Difficulties in Emotion Regulation Scale). Of the initial sample, 51 adolescents (Mage  = 14.73; female = 80.4%) entered a 20-week DBT-A program due to self-harm and/or Borderline Personality features. RESULTS: In a pretreatment sample, the frequency of dysfunctional coping, but not of adaptive coping, differentiated self-injurers from non-self-injurers. Full information maximum likelihood estimation was used to address high attrition (60.8%) from DBT-A. Those who completed DBT-A (n = 20) reported significantly improved emotion regulation. Adaptive coping at pretreatment predicted increased DBT skills use at post-treatment. CONCLUSIONS: This non-randomized pilot study highlights dysfunctional coping and emotion dysregulation as risk factors for self-harm and suggests that 20-week DBT-A may help improve emotion regulation. Future research should employ a randomized design to further examine the effect of DBT-A on these transdiagnostic processes of psychopathology. KEY PRACTITIONER MESSAGE: Due to cultural and environmental stressors, ethnic minority adolescents may be at greater risk for developing self-regulatory difficulties - transdiagnostic mechanisms known to underly self-harming behaviors; however, we know little about whether empirically supported treatments for self-harm will improve youth's coping and emotion regulation. In a clinically referred, pretreatment sample of ethnic minority youth, levels of BPD symptomatology, emotion dysregulation, and dysfunctional coping, but not of adaptive coping, differentiated teens who self-harmed from those who did not. Self-harming ethnic minority youth who participated in an uncontrolled, pilot trial of dialectical behavior therapy for adolescents (DBT-A) at an urban mental health clinic reported improved emotion regulation at post-treatment. Baseline emotion regulation skills were not predictive of treatment-related changes, suggesting that other factors, such as DBT-A, may have played a decisive role in improving teens' emotion regulation. In contrast, adaptive coping skills at pretreatment were linked to increased DBT skills use at post-treatment, indicating that patients' baseline coping skills may play a predictive role in psychotherapy outcomes. Future research should employ a randomized control trial to examine the effect of DBT-A on vulnerable ethnic minority youth's development of self-regulation. It should also investigate the hypothesized mediating role of self-regulation in effecting lasting clinical gains.

The Contribution of Sensory Sensitivity to Emotional Lability in Children with ADHD Symptoms.

Emotional lability and sensory sensitivity have been shown to contribute to the overall clinical picture in children with attention deficit hyperactivity disorder (ADHD; Dunn & Bennett, 2002; Sobanski et al., 2010). Further, both of these characteristics have been individually demonstrated to contribute to poorer quality of life, increased functional impairment, and poorer treatment response (Anastopoulos et al., 2010; Boterberg & Warreyn, 2016). However, to date, no study has evaluated the relationship among all three of these factors. The current study hypothesized that increased sensory sensitivity would moderate the relationship between hyperactive/impulsive symptoms of ADHD and emotional lability in youth. Results indicate that heightened sensory sensitivity strengthens the relationship between hyperactive/impulsive symptoms of ADHD and emotional lability in children with three or more clinically impairing ADHD symptoms. This dimensional approach was taken in accordance with growing evidence that even children with sub-threshold ADHD experience significant functional impairment and high rates of sensory sensitivity (Hong et al., 2014). These findings suggest that clinicians treating children with ADHD symptoms and emotional lability should consider assessing for sensory sensitivity as integration of multi-sensory techniques or referral to concurrent occupational therapy may significantly improve treatment outcomes and quality of life for these children and their families.

An open circuit voltage decay system for performing injection dependent lifetime spectroscopy.

Of all of the material parameters associated with a semiconductor, the carrier lifetime is by far the most complex and dynamic, being a function of the dominant recombination mechanism, the equilibrium number of carriers, the perturbations in carriers (e.g., carrier injection), and the temperature, to name the most prominent variables. The carrier lifetime is one of the most important parameters in bipolar devices, greatly affecting conductivity modulation, on-state voltage, and reverse recovery. Carrier lifetime is also a useful metric for device fabrication process control and material quality. As it is such a dynamic quantity, carrier lifetime cannot be quoted in a general range such as mobility; it must be measured. The following describes a stand-alone, wide-injection range open circuit voltage decay system with unique lifetime extraction algorithms. The system is initially used along with various lifetime spectroscopy techniques to extract fundamental recombination parameters from a commercial high-voltage PIN diode.

Teacher-Child Interaction Training: A Pilot Study With Random Assignment.

Teacher-Child Interaction Training (TCIT), adapted from Parent-Child Interaction Therapy (PCIT), is a classroom-based program designed to provide teachers with behavior management skills that foster positive teacher-student relationships and to improve student behavior by creating a more constructive classroom environment. The purpose of this pilot study was to evaluate TCIT in more classrooms than previously reported in the literature, with older children than previously reported, using random assignment of classrooms to TCIT or to a no-TCIT control condition and conducting all but two sessions within the classroom to enhance feasibility. Participants included 11 kindergarten and first grade classroom teachers and their 118 students from three urban, public schools in Manhattan, with five classrooms randomly assigned to receive TCIT and six to the no-TCIT control condition. Observations of teacher skill acquisition were conducted before, during, and after TCIT for all 11 teachers, and teacher reports of student behavior were obtained at these same time points. Teacher satisfaction with TCIT was assessed following training. Results suggested that after receiving TCIT, teachers increased rates of positive attention to students' appropriate behavior, decreased rates of negative attention to misbehavior, reported significantly less distress related to student disruptive behavior, and reported high satisfaction with the training program. Our study supports the growing evidence-base suggesting that TCIT is a promising approach for training teachers in positive behavior management strategies and for improving student disruptive behavior in the classroom.