Early Predictors and Concurrent Correlates of Tonic and Phasic Irritability in Adolescence.

Irritability is a common presenting problem in youth mental health settings that is thought to include two components: tonic (e.g., irritable, touchy mood) and phasic (e.g., temper outbursts), each with unique correlates and outcomes, including later internalizing and externalizing problems, respectively. However, we are unaware of any studies of early predictors of tonic and phasic irritability. We utilized data from a longitudinal study of a community sample of 3-year-old children followed to age 15 (n = 444). We conducted confirmatory factor analysis (CFA) of items from several self-report irritability measures at age 15, including the Affective Reactivity Index, the International Personality Item Pool, the Schedule for Non-Adaptive and Adaptive Personality Youth Version, and the Child Depression Inventory, and examined their early childhood predictors. The CFA identified dimensions consistent with tonic and phasic irritability. Tonic irritability at age 15 was uniquely associated with concurrent internalizing disorders and suicidal behavior while phasic irritability was uniquely associated with concurrent externalizing disorders. When adolescent tonic and phasic irritability were examined together, female sex and parental depressive and substance use disorders at age 3 uniquely predicted adolescent tonic irritability. Additionally, male sex, less parental education, greater laboratory-observed anger and impulsivity, ODD symptoms, higher irritability, and no parental substance use history at age 3 uniquely predicted adolescent phasic irritability. Youth-reported tonic and phasic irritability at age 15 appear to be distinguishable constructs with distinct concurrent correlates and early antecedents. Findings have important implications for research on the etiology of irritability and developing effective treatments.

Irritability across adolescence: Examining longitudinal trajectory, stability, and associations with psychopathology and functioning at age 18.

BACKGROUND: Irritability, marked by diminished frustration tolerance, holds significant implications for youth mental health treatment. Despite prior research on irritability trajectories, understanding of individual differences during adolescence remains limited. This study examines the stability and trajectory of irritability across ages 12-18, investigating associations with psychopathology and functioning at age 18. METHODS: A community sample of families with 3-year-old children (N = 518) was recruited via commercial mailing lists. Irritability was assessed at ages 12, 15, and 18 using the Affective Reactivity Index. Psychopathology at age 18 was evaluated with the Kiddie Schedule for Affective Disorders and Schizophrenia, and functioning was assessed through the UCLA Life Stress Interview. Measurement invariance analyses and latent growth curve modeling were conducted within a structural equation modeling (SEM) framework. RESULTS: Configural, metric, and scalar invariance models were supported. Elevated irritability at age 12 predicted adverse outcomes at age 18, including increased psychotropic medication use, mental health treatment, suicidal ideation, self-injury, and psychiatric disorders. Importantly, these associations persisted even after accounting for corresponding variables at age 12. The trajectory of irritability during early adolescence significantly predicted heightened risks for various outcomes at age 18, including suicidal ideation, depression, anxiety, disruptive behavior disorders, and impaired interpersonal functioning. DISCUSSION: Limitations include using only youth-reported data at age 18, limited generalizability from a mostly White, middle-class sample, and insufficient exploration of the broader developmental trajectory of irritability. Nevertheless, the findings emphasize the crucial role of irritability's trajectory in influencing various psychopathological and functional outcomes in late adolescence.

Irritability in Youths: A Critical Integrative Review.

Irritability, defined as proneness to anger that may impair an individual's functioning, is common in youths. There has been a recent upsurge in relevant research. The authors combine systematic and narrative review approaches to integrate the latest clinical and translational findings and provide suggestions for addressing research gaps. Clinicians and researchers should assess irritability routinely, and specific assessment tools are now available. Informant effects are prominent, are stable, and vary by age and gender. The prevalence of irritability is particularly high among individuals with attention deficit hyperactivity disorder, autism spectrum disorder, and mood and anxiety disorders. Irritability is associated with impairment and suicidality risk independent of co-occurring diagnoses. Developmental trajectories of irritability (which may begin early in life) have been identified and are differentially associated with clinical outcomes. Youth irritability is associated with increased risk of anxiety, depression, behavioral problems, and suicidality later in life. Irritability is moderately heritable, and genetic associations differ based on age and comorbid illnesses. Parent management training is effective for treating psychological problems related to irritability, but its efficacy in treating irritability should be tested rigorously, as should novel mechanism-informed interventions (e.g., those targeting exposure to frustration). Associations between irritability and suicidality and the impact of cultural context are important, underresearched topics. Analyses of large, diverse longitudinal samples that extend into adulthood are needed. Data from both animal and human research indicate that aberrant responses to frustration and threat are central to the pathophysiology of irritability, revealing important translational opportunities.

Parent and Teacher Ratings of Tonic and Phasic Irritability in a Clinical Sample.

Research on tonic (persistently angry or grumpy mood) and phasic (temper tantrums/outbursts) irritability in youth has utilized community samples and information from parents and youth. We examined whether tonic and phasic irritability are empirically distinguishable and have similar correlates using teacher, in addition to parent, reports in a clinical sample of children and adolescents. The sample included youth aged 5-18 evaluated at a university outpatient clinic, with complete information from 2481 parents and 2449 teachers. We conducted confirmatory factor analysis (CFA) using items from several parent- and teacher-report inventories and examined concurrent associations with psychopathology and functioning. The CFA supported a two-factor model consistent with tonic and phasic irritability in both parent- and teacher-reports. Parent-reported tonic irritability was associated with higher rates of depression and anxiety disorders, suicidality, and antidepressant medication use. Teacher-reported tonic irritability was associated with elevated rates of depression and antidepressant use. Both parent- and teacher-reported phasic irritability were linked to higher rates of ADHD combined type, oppositional defiant/conduct disorders, and referral for rages. Parent- and teacher-reported tonic and phasic irritability were all associated with impaired social functioning. Parents and teachers can distinguish tonic and phasic irritability, which are associated with internalizing and externalizing problems, respectively. Findings were generally consistent across informants, and with prior studies using community samples.

Irritability and Temperament: Concurrent and Prospective Relationships in Childhood and Adolescence.

OBJECTIVE: Irritability symptoms are closely associated with, and may reflect, temperament traits, particularly negative affectivity (NA). However, there are few empirical data on the relationships between child temperament and irritability symptoms. METHOD: We investigated cross-sectional and longitudinal relationships between irritability symptoms and temperament traits from age 3-15 in a community sample of 609 children and their parents. Irritability symptoms were assessed through structured interviews with parents at ages 3/6, and inventories completed by parents and youth at ages 12/15. Temperament traits were assessed using parent reports at ages 3/6, and parent and child reports at ages 12/15. Path analysis and structural equation modeling were used to explore longitudinal associations from ages 3-6 and 12-15, respectively. RESULTS: Higher levels of irritability symptoms at ages 3/6 were concurrently associated with higher levels of NA and lower levels of effortful control (EC). In adolescence, higher irritability symptoms were concurrently associated with higher negative temperament and disinhibition. In longitudinal analyses from age 3-6 and 12-15, irritability symptoms showed modest but significant stability after adjusting for the stability of temperament traits. However, there were significant differences in the stability paths at age 3-6, reflecting lower stability of irritability symptoms. Finally, EC at age 3 predicted increased irritability symptoms at age 6, while irritability symptoms at age 3 predicted increased NA at age 6. CONCLUSION: Irritability symptoms are robustly associated with both temperamental NA and difficulty regulating attention and behavior. These findings help situate irritability symptoms within widely accepted temperament/personality taxonomies.

Early childhood anxiety disorders: continuity and predictors in adolescence.

Anxiety disorders are among the most common disorders in early childhood. Although many older children and adolescents with anxiety disorders recover and remain well, little is known about the continuity of early childhood anxiety and the factors that predict persistence/recurrence in later childhood and adolescence. We followed 129 children who met anxiety disorder criteria at age 3 and/or 6 and determined how many continued to experience an anxiety disorder between age 7 and 15, as well as the continuity of specific anxiety disorders. We explored whether biological sex, number of anxiety disorders, early childhood persistence (i.e., anxiety diagnosis at both age 3 and 6), childhood comorbidities, temperamental behavioral inhibition, a maternal history of anxiety, and authoritarian and overprotective parenting predicted persistence/recurrence of an anxiety disorder from age 7 to 15. Sixty-five (50.4%) of the adolescents with an early childhood anxiety disorder met anxiety disorder criteria during the age 7-15 interval. Homotypic continuity from early childhood to school-age/mid-adolescence was observed for social anxiety disorder, separation anxiety disorder, and generalized anxiety disorder (GAD). Early childhood agoraphobia predicted school-age/mid-adolescent GAD and early childhood GAD predicted school-age/mid-adolescent specific phobia. In bivariate analyses, number of anxiety disorders, persistence of anxiety from age 3 to 6, and having a mother with a history of anxiety predicted the persistence/recurrence of anxiety disorders from age 7 to 15. Only early childhood persistence of anxiety uniquely predicted the persistence/recurrence of an anxiety disorder over and above the other predictors. Early intervention efforts should focus on identifying and intervening with young children who demonstrate a protracted course of anxiety.

Intergenerational Effects of Parenting on Children's Internalizing and Externalizing Trajectories: A Latent Growth Model Analysis.

Externalizing and internalizing problems in childhood are associated with risk for later psychopathology. It is important to identify antecedents as they may be targets for intervention. In a sample of 501 children (M = 6.07; 54.7% male; 12.4% Hispanic; 12.2% non-White), we leveraged data from a longitudinal study to examine the transmission of parenting behaviors across two generations and its effects on children's internalizing and externalizing outcomes in the subsequent generation. The results suggested transmission of parenting behaviors, confirmed the role of parenting on children's psychopathology, and provided novel evidence of a direct and indirect role of grandparent's caregiving on children's psychopathology via parenting continuity. These findings may inform interventions addressing continuity of parenting behaviors and their subsequent effects.

Longitudinal Stability and Interrelations of Tonic and Phasic Irritability in Adolescent Girls.

Irritability is a transdiagnostic feature and a common mental health problem in adolescence. Prior studies indicate that irritability is composed of two correlated but separable dimensions, tonic irritability (i.e., irritable mood) and phasic irritability (i.e., temper outbursts), which are respectively associated with internalizing and externalizing outcomes. However, little is known about the stability and interrelations of tonic and phasic irritability. The current study examined the longitudinal interplay between tonic and phasic irritability during adolescence. A community sample of 544 girls (age 13.5-15.5 years) was assessed at 5 waves (over 3 years, in 9-month intervals). A random-intercept cross-lagged panel model was used to examine the within-person stability and longitudinal interrelations of tonic and phasic irritability. Pseudo-indicator models were used to help analyze all available data. Results suggest that tonic and phasic irritability had distinct patterns of development and co-development. Between individuals, tonic and phasic irritability showed moderate rank-order stability and high concurrent correlations. Within individuals, phasic irritability was found to positively predict both tonic and phasic irritability at the subsequent wave, whereas tonic irritability did not predict later phasic irritability and showed weaker within-person stability. These results suggest that increased or decreased phasic irritability in adolescent girls may signify continued increase or decrease in both tonic and phasic irritability. The study was among the first to demonstrate the discriminant validity of tonic and phasic irritability from a developmental perspective.

Is the distinction between tonic and phasic irritability meaningful in 3-year-old children?

Irritability encompasses both normative misbehavior in early childhood and clinically significant problems across development. Recent studies have distinguished between tonic (i.e., persistently angry or grumpy mood) and phasic (i.e., temper tantrums or outbursts) forms of irritability and shown that they have different implications for psychopathology and functioning. However, data on this distinction in young (i.e., preschool aged) children are nonexistent. We utilized data from a longitudinal study of a community sample of 462 3-year-olds followed to age 15. We conducted confirmatory factor analysis (CFA) using items from a diagnostic interview and several parent-report inventories and examined concurrent and prospective associations with clinically relevant variables. The CFA identified dimensions consistent with tonic and phasic irritability. Tonic irritability was independently associated with concurrent parent-reported temperamental negative affectivity and surgency, and depressive and oppositional defiant (ODD) disorders, and predicted higher rates of disruptive behavior disorders (DBD) and suicidal behavior in later childhood and adolescence. Phasic irritability was independently associated with concurrent laboratory observations of child impulsivity, parent-reported temperamental negative affectivity, surgency, and low effortful control, maladaptive parenting, and generalized anxiety disorder (GAD), attention-deficit hyperactivity disorder (ADHD), and ODD, but it did not predict later psychopathology. Tonic and phasic irritability are separable in 3-year-old children, but their correlates and outcomes are not as distinct as in older youth. This may reflect the greater difficulty characterizing normative and pathological irritability in the preschool period.

Utility of self- and parent-reported suicidal ideation in early childhood: Prediction of suicidal ideation and psychopathology in adolescence.

BACKGROUND: The rates of suicide in youth have increased dramatically, leading to increased interest in routinely screening youth for suicidality. However, data on suicidal ideation (SI) in younger children are sparse, especially with brief self-report measures that can easily be used for screening non-referred samples. METHODS: We evaluated a community sample of 497 6-year-old children and their parents and followed them into adolescence. SI was assessed via child self-report at ages 6 and 9 using an item from the Children's Depression Inventory, and via parent-report at age 6 using an item from the Early Childhood Inventory. Child psychopathology and functioning were assessed via semi-structured interviews every 3 years from age 6 through 15. RESULTS: Child endorsement of SI at age 6 did not predict later psychopathology or functioning. Child endorsement of SI at age 9 was associated with attention deficit hyperactivity disorder (ADHD) and disruptive behavior disorders (DBD) diagnoses across the adolescent follow-up assessments. Parent endorsement of child SI predicted an increased likelihood of later SI and non-suicidal self-injury, a higher rate of DBD and externalizing symptoms, and poorer global functioning in adolescence. CONCLUSIONS: Our results support recommendations against administering SI screening measures to children under the age of 10.

Tonic and phasic irritability in 6-year-old children: differential correlates and outcomes.

OBJECTIVE: Irritability is a common and clinically important problem in children and adolescents and a risk factor for later psychopathology and impairment. Irritability can manifest in both tonic (e.g., irritable, touchy mood) and phasic (e.g., temper outburst) forms, and recent studies of adolescents suggest that they predict different outcomes. However, no studies have examined whether tonic and phasic irritability are empirically distinguishable in 6-year-old children and whether they have distinct correlates and outcomes. METHOD: We utilized data from a longitudinal study of an unselected community sample of four hundred fifty-two 6-year-olds followed at 3-year intervals to age 15. We conducted confirmatory factor analysis (CFA) using relevant items from a diagnostic interview and several parent-report inventories. RESULTS: The CFA identified dimensions that were consistent with tonic and phasic irritability. Tonic irritability was independently associated with concurrent parent-reported temperamental negative affectivity and internalizing and externalizing disorders at age 6 and predicted higher rates of internalizing psychopathology, and suicidal ideation, in adolescence. Phasic irritability was independently associated with concurrent parent-reported temperamental negative affectivity, surgency, and low effortful control, maladaptive parenting styles and practices, and externalizing disorders at age 6, and predicted higher rates of externalizing psychopathology in adolescence. CONCLUSIONS: Tonic and phasic irritability in 6-year-old children appear to be distinguishable constructs with different temperament and parenting correlates and psychopathological outcomes. Distinguishing these components has implications for research on the etiology and pathophysiology of irritability and developing effective treatments.

Psychometric Properties of the Emotional Outburst Inventory (EMO-I): Rating What Children Do When They Are Irritable.

Objective: Existing measures of irritability rarely distinguish phasic and tonic forms, despite their different clinical implications. We developed the Emotional Outburst Inventory (EMO-I) as a brief screening tool for phasic irritability in youth in clinical settings. The EMO-I assesses outburst severity, frequency, and duration. This article reports on its psychometric properties.Methods: The sample included 2,552 youth (mean [SD] age = 12.1 [3.5] years) evaluated at a university outpatient clinic between February 2005 and June 2014. Parents of 1,772 youth (69.4%) endorsed some anger problem. We assessed convergent, construct, and incremental validity of the EMO-I using a variety of measures, including the Child Behavior Checklist (CBCL) dysregulation profile (DP) and the CBCL irritability subscale. We also examined associations with hospitalization, emergency department visits, atypical antipsychotic use, help-seeking for outbursts, and impairment.Results: The EMO-I severity had good internal consistency (Cronbach α = 0.83) and was significantly associated with other irritability constructs (median correlation, r = 0.66, all P < .01). Outburst severity was associated with impairment (ß = .87, P < .01) and with hospitalization, emergency department referral, antipsychotic use, and help-seeking for outbursts (median odds ratio = 1.27, all P < .01). The EMO-I showed incremental validity over and above the CBCL-DP and CBCL irritability subscale (explaining an additional 2%-12% of variance) when examining associations with impairment, hospitalization, emergency department referral, antipsychotic use, and help-seeking for outbursts.Conclusions: The EMO-I showed good internal consistency and convergent, construct, and incremental validity. Outburst behavior severity had stronger associations with important clinical variables than did outburst frequency and duration.

Depression in 3/6-year-old children: clinical and psychosocial outcomes in later childhood and adolescence.

BACKGROUND: In recent years, epidemiological and clinical studies have revealed that depressive disorders can present in early childhood. To clarify the validity and prognostic significance of early childhood-onset depression, we investigated diagnostic and functional outcomes in later childhood and adolescence. METHODS: A community sample (N = 516) was assessed for psychopathology at ages 3 and 6 using the Preschool Age Psychiatric Assessment. When participants were 9, 12, and 15 years old, children and parents completed the Kiddie Schedule for Affective Disorders and Schizophrenia and measures of symptoms and functioning. RESULTS: In models adjusting for covariates, depressed 3/6-year-old children were more likely to experience subsequent episodes of depressive disorders and exhibited significantly higher rates of later anxiety disorder, attention deficit hyperactivity disorder, and suicidality compared to children without depressive disorders at age 3/6. Early childhood depression was also associated with higher levels of mother, but not child, reported depressive symptoms at age 15 compared to children without depressive disorders at age 3/6. Finally, depression at age 3/6 predicted lower levels of global and interpersonal functioning and higher rates of treatment at age 15 compared to children without depressive disorders at age 3/6. CONCLUSIONS: Results support the clinical significance of depression in 3/6-year-old children, although further studies with larger samples are needed.

Ecological Predictors of Parental Beliefs about Infant Crying in a Randomized Clinical Trial of ABC.

OBJECTIVE: Attachment theory suggests that parent responsiveness to infant distress predicts secure parent-child attachment and subsequent healthy child development. While much is known about microsystem factors that interfere with responsive caregiving, there is a paucity of research investigating how exosystem factors, such as neighborhood crime, affect parenting. METHOD: In a sample of 200 diverse caregivers and their 5- to 21-month-old infants (M = 11.82; 49% male), we leveraged data from a randomized clinical trial of Attachment and Biobehavioral Catch-up (ABC), an attachment-based intervention, to assess whether individual level burden (indicated by single-parent status, low income, residential instability, young parenthood, parental psychopathology, and own history of early adversity) and neighborhood crime density (geocoded within a 500 ft radius of parent's residence) were associated with their beliefs about infant crying, an indicator of responsive parenting. RESULTS: Consistent with Bronfenbrenner's ecological systems' theory of development, both greater exposure to individual burden indicators and greater neighborhood crime density predicted greater maladaptive beliefs about infant crying, suggesting that contextual factors outside the household are associated with parenting cognitions. Further, when accounting for the effect of crime and individual burden on parental beliefs about infant crying, participation in the ABC intervention was effective in reducing maladaptive parenting beliefs. CONCLUSIONS: We consider implications for multi-level intervention approaches that target family processes, neighborhood-level factors, and policy initiatives to promote community wellbeing and positive child development.

A window into racial and socioeconomic status disparities in preschool disciplinary action using developmental methodology.

There are large differences in expulsions and suspensions on the basis of race starting in preschool and divergent explanations for their cause. The current study explores how developmental methodology can shed light on this vexing issue. We leverage two measures: (1) childcare provider complaints about children's behavior and their recommended disciplinary action (measured by parent report); and (2) observed disruptive behavior measured by a laboratory-based standardized observation tool, the Disruptive Behavior Diagnostic Observation Schedule (DB-DOS), among a large, sociodemographically diverse sample of children (n  =$\text{=}$  430; mean age  =$\text{=}$  4.79 years). We identified three latent class profiles on the basis of race/socioeconomic status (SES) and found disparities in childcare provider complaints based on profile membership. More specifically, children classified in the Black/Hispanic, poor and Black, nonpoor profiles both had significantly higher childcare provider complaints compared with children in the White/Hispanic, nonpoor profile. By contrast, there were no differences in observed disruptive behavior based on race/SES profiles. Finally, childcare provider complaints in preschool were associated with lower cognitive performance in elementary school, above and beyond observed disruptive behavior in preschool and race/SES profiles. Implications for classroom practice and contributions to the national debate on school disciplinary policies are discussed.

A Smartphone-Based Self-management Intervention for Bipolar Disorder (LiveWell): User-Centered Development Approach.

BACKGROUND: Bipolar disorder is a serious mental illness that results in significant morbidity and mortality. Pharmacotherapy is the primary treatment for bipolar disorder; however, adjunctive psychotherapy can help individuals use self-management strategies to improve outcomes. Yet access to this therapy is limited. Smartphones and other technologies have the potential to increase access to therapeutic strategies that enhance self-management while simultaneously providing real-time user feedback and provider alerts to augment care. OBJECTIVE: This paper describes the user-centered development of LiveWell, a smartphone-based self-management intervention for bipolar disorder, to contribute to and support the ongoing improvement and dissemination of technology-based mental health interventions. METHODS: Individuals with bipolar disorder first participated in a field trial of a simple smartphone app for self-monitoring of behavioral targets. To develop a complete technology-based intervention for bipolar disorder, this field trial was followed by design sessions, usability testing, and a pilot study of a smartphone-based self-management intervention for bipolar disorder. Throughout all phases of development, intervention revisions were made based on user feedback. RESULTS: The core of the LiveWell intervention consists of a daily self-monitoring tool, the Daily Check-in. This self-monitoring tool underwent multiple revisions during the user-centered development process. Daily Check-in mood and thought rating scales were collapsed into a single wellness rating scale to accommodate user development of personalized scale anchors. These anchors are meant to assist users in identifying early warning signs and symptoms of impending episodes to take action based on personalized plans. When users identified personal anchors for the wellness scale, the anchors most commonly reflected behavioral signs and symptoms (40%), followed by cognitive (25%), mood (15%), physical (10%), and motivational (7%) signs and symptoms. Changes to the Daily Check-in were also made to help users distinguish between getting adequate sleep and keeping a regular routine. At the end of the pilot study, users reported that the Daily Check-in made them more aware of early warning signs and symptoms and how much they were sleeping. Users also reported that they liked personalizing their anchors and plans and felt this process was useful. Users experienced some difficulties with developing, tracking, and achieving target goals. Users also did not consistently follow up with app recommendations to contact providers when Daily Check-in data suggested they needed additional assistance. As a result, the human support roles for the technology were expanded beyond app use support to include support for self-management and clinical care communication. The development of these human support roles was aided by feedback on the technology's usability from the users and the coaches who provided the human support. CONCLUSIONS: User input guided the development of intervention content, technology, and coaching support for LiveWell. Users valued the provision of monitoring tools and the ability to personalize plans for staying well, supporting the role of monitoring and personalization as important features of digital mental health technologies. Users also valued human support of the technology in the form of a coach, and user difficulties with aspects of self-management and care-provider communication led to an expansion of the coach's support roles. Obtaining feedback from both users and coaches played an important role in the development of both the LiveWell technology and human support. Attention to all stakeholders involved in the use of mental health technologies is essential for optimizing intervention development.

A Brief Early Childhood Screening Tool for Psychopathology Risk in Primary Care: The Moderating Role of Poverty.

OBJECTIVES: To evaluate the Preschool Feeling Checklist (PFC) utility for predicting later mental disorders and functioning for children and assess whether the PFC's predictive utility differs as a function of childhood poverty. STUDY DESIGN: We analyzed data from a prospective longitudinal study of preschoolers in St Louis. Preschoolers (N = 287) were recruited from primary care sites and were assessed annually for 10-15 years. The PFC screened for depressive symptoms. Later age-appropriate psychiatric diagnostic interviews were used to derive Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, diagnoses. Regression and moderation analyses, and multilevel modeling were used to test the association between the PFC and later outcomes, and whether this relationship was moderated by income-to-needs. RESULTS: The PFC predicted major depressive disorder (OR 1.13, P < .001), attention deficit hyperactivity disorder (OR 1.16, P < .001), and mania (OR 1.18, P < .05) in adolescence and early adulthood. Income-to-needs was a moderator in the predictive pathway between the PFC and later major depressive disorder (OR 1.10, P < .05) and mania (OR 1.19, P < .001) with the measure less predictive for children living in poverty. The PFC predicted worse functioning by the final assessment (b = 1.71, SE = 0.51, P = .001). CONCLUSIONS: The PFC served as an indicator of risk for later attention deficit hyperactivity disorder and impairment in all children. It has predictive utility for later mood disorders only in children living above the poverty line. Predicting depression in children living below the poverty line may require consideration of risk factors not covered by the PFC.

Differential outcomes of tonic and phasic irritability in adolescent girls.

BACKGROUND: Irritable mood is a transdiagnostic clinical feature that is present in multiple psychiatric disorders. Although irritability is frequently examined as a unitary construct, two dimensions of irritability, tonic (i.e., irritable mood) and phasic (i.e., temper outbursts), have been hypothesized. However, few studies have examined whether tonic and phasic irritability are empirically separable and predict different forms of psychopathology. METHODS: We utilized data from a longitudinal study of a community sample of 550 girls (age 13.5-15.5 years) followed at 9-month intervals for 3 years. We conducted exploratory factor analysis (EFA) using items from three self-report inventories: the International Personality Item Pool Anger scale, Temperament and Affectivity Inventory Anger scale, and Buss-Perry Aggression Questionnaire Anger scale. RESULTS: The EFA identified dimensions that were consistent with tonic and phasic irritability. Tonic irritability at baseline independently predicted the development of depressive disorders and generalized anxiety disorder (GAD) in subsequent waves. Phasic irritability independently predicted a decreased probability of GAD, but an increased probability of oppositional defiant, conduct, and substance use disorder, and greater risky sexual behavior and relational aggression during the follow-up. CONCLUSIONS: Tonic and phasic irritability appear to be separable constructs with unique implications for later psychopathology and related behavior among adolescent girls. It is important to consider this distinction in research on the etiology and pathophysiology of irritability and developing effective treatments.

Reliability and Validity of Preschool Feelings Checklist.

The Preschool Feelings Checklist (PFC) is a 16-item parent report measure of depressive symptoms in young children. However, data on its reliability and validity are limited. We examined the internal consistency and convergent, discriminant, and predictive validity of the PFC in an unselected community sample of 490 3-year old children. Child psychopathology was assessed using semi-structured diagnostic interviews conducted with a parent at ages 3 and 6 (the Preschool Age Psychiatric Assessment) and with the child and a parent at ages 9, 12, and 15 (the Kiddie Schedule for the Affective Disorders and Schizophrenia, Present and Lifetime Version). The PFC exhibited good internal consistency. It was concurrently associated with depression, as well as a wide range of other psychiatric disorders and functional impairment. Similarly, the PFC at 3 years independently predicted depression and a range of other disorders and global functioning in subsequent assessments later in childhood and in adolescence. Finally, the PFC outperformed the longer Child Behavior Checklist in predicting diagnoses and functioning. Results support the concurrent and predictive validity of the PFC in preschoolers. However, it also exhibited concurrent and predictive associations with a number of other disorders, suggesting that it indexes a broad transdiagnostic liability for psychopathology and impairment.