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Τετάρτη 13 Νοεμβρίου 2019

Effects of Group-Based CBT on Post-Event Processing in Children with Social Anxiety Disorder Following an Experimental Social Stressor

Abstract

Theoretical models and previous research suggest that post-event processing (PEP) after social situations maintains social anxiety disorder (SAD). To date, little is known about PEP in childhood, a critical period for disorder development, or about possible positive effects of cognitive behavioral therapy (CBT) on PEP in children. Children with SAD (n = 71; aged 9–13 years) and healthy controls (n = 55) participated in a social stress task (Trier Social Stress Test for Children, TSST-C), which was repeated in children with SAD after either 12 sessions of CBT or a waiting period. PEP was assessed daily with regard to both valence and frequency, as well as in more detail regarding specific negative and positive ruminative thoughts 1 week after each TSST-C. Daily PEP after the TSST-C was more frequent and more negative in children with SAD compared to healthy controls, in particular during the first 2 days after the TSST-C. After CBT treatment, children with SAD reported more positive PEP but not less negative PEP compared to children in the waitlist control group. The current study suggests that negative PEP in children with SAD is most pronounced in the first days following social stress. Group-based CBT seems to be effective in building up positive cognitions after social stress in children, but developing specific interventions targeting negative PEP immediately after a social stressor may be necessary to further increase treatment efficacy.

Adolescent Psychopathic Traits Negatively Relate to Hemodynamic Activity within the Basal Ganglia during Error-Related Processing

Abstract

Youth with elevated psychopathic traits exhibit a number of comparable neurocognitive deficits as adult psychopathic offenders, including error-related processing deficits. Subregions of the basal ganglia play an important, though indirect, role in error-related processing through connections with cortical areas including the anterior cingulate cortex. A number of recent structural and functional magnetic resonance imaging (s/fMRI) studies have associated basal ganglia dysfunction in youth with elevated psychopathic traits, but these studies have not examined whether dysfunction occurring within subregions of the basal ganglia help contribute to error-related processing deficits previously observed in such at-risk youth. Here, we investigated error-related processing using a response inhibition Go/NoGo fMRI experimental paradigm in a large sample of incarcerated male adolescent offenders (n = 182). In the current report, psychopathy scores (measured via the Psychopathy Checklist: Youth Version (PCL:YV)) were negatively related to hemodynamic activity within input nuclei of the basal ganglia (i.e., the caudate and nucleus accumbens), as well as intrinsic/output nuclei (i.e., the globus pallidus and substantia nigra) and related nuclei (i.e., the subthalamic nucleus) during error-related processing. This is the first evidence to suggest that error-related dysfunction previously observed in youth with elevated psychopathic traits may be related to underlying abnormalities occurring within subregions of the basal ganglia.

Blunted Physiological Stress Reactivity among Youth with a History of Bullying and Victimization: Links to Depressive Symptoms

Abstract

Bullying and peer victimization are stressful experiences for youth, and are associated with increased risk for psychopathology. Physiological differences in the body’s stress response system may help us to understand vulnerability for depressive symptoms among youth involved with bullying. The current study examined both sympathetic and parasympathetic activity using skin conductance (SCL) and respiratory sinus arrhythmia (RSA) at a neutral baseline and during Cyberball, a stressful social exclusion paradigm. Participants consisted of 175 youth in grades 6–11 (mean age 13.6 years, 51% girls). Multilevel modeling was used to examine changes in both positive and negative affect, and physiological stress reactivity over time. Logistic regression was used to examine the associations between bullying, victimization, and RSA on depressive symptoms. Peer victimization was negatively associated with resting RSA. Bullying others was negatively associated with SCL during Cyberball. Additionally, RSA reactivity during acute stress moderated the link between victimization and depressive symptoms. Victimization was more strongly associated with depressive symptoms when youth also demonstrated blunted RSA reactivity. These results suggest that both victimized youth and those who bully others have differences in their autonomic responses to acute stress. Individual differences in stress physiology may help us to understand vulnerability and resilience to depressive symptoms in the context of bullying and victimization.

Reinforcement Contingency Learning in Children with ADHD: Back to the Basics of Behavior Therapy

Abstract

Reinforcement deficits in ADHD may affect basic operant learning processes relevant for Behavioral Treatment. Behavior acquired under partial reinforcement extinguishes less readily after the discontinuation of reinforcement than behavior acquired under continuous reinforcement, a phenomenon known as the Partial Reinforcement Extinction Effect [PREE], which has great relevance for the emergence of behavioral persistence. The present study examined acquisition and extinction of operant responding under partial and continuous reinforcement in children with and without ADHD. In addition, we evaluated the effectiveness of gradual stretching the reinforcement rate during acquisition for remedying potential acquisition or extinction deficits under partial reinforcement in ADHD. In an operant learning task designed to mimic the task confronted by an animal in a Skinner box, 62 typically developing and 49 children with ADHD (age: 8–12) were presented with a continuous, partial or gradually stretching reinforcement scheme followed by extinction. Both groups of children acquired the instrumental response more slowly and exhibited more behavioral persistence (reduced extinction) when responding was initially reinforced under partial relative to continuous reinforcement, with no differences between groups. Progressive ratio stretching resulted in faster acquisition than partial reinforcement yet promoted equal behavioral persistence, again without differences between ADHD and TD groups. Unlike suggested by previous research, children with ADHD exhibit neither an acquisition deficit under partial reinforcement nor a deficit in PREE. Of relevance for Behavioral Treatment, gradual reinforcement stretching can be used to facilitate response acquisition over purely partial reinforcement while maintaining equal behavioral persistence upon reward discontinuation.

Too Much Too Soon?: Borderline Personality Disorder Symptoms and Romantic Relationships in Adolescent Girls

Abstract

Despite the centrality of adult romantic relationships to the conceptualization of borderline personality disorder (BPD), little is known about the earlier development of this interdependency during adolescence. Thus, we examined the co-development of romantic relationships and BPD symptoms from ages 15 to 19 in a large urban sample of girls (N = 2310) in the Pittsburgh Girls Study. We had two major aims. First, we sought to examine associations between BPD symptoms and romantic relationship involvement (number of partners, importance of relationship) and relational insecurity (concerns about infidelity and tactics to maintain relationship) during adolescence. Second, we investigated mutual influences and temporal precedence of BPD symptoms and four specific romantic relationship characteristics (perceived support and antagonism, verbal and physical aggression) during adolescence using latent growth curve models (LGCMs). Results indicated that BPD symptoms were associated with increased involvement in romantic relationships and heightened relational insecurity across adolescence. Furthermore, higher BPD symptoms at age 15 predicted increases in antagonism, verbal aggression, and physical aggression across ages 15 to 19. Conversely, perceptions of higher levels of relationship support at age 15 predicted steeper increases in BPD symptoms across ages 15 to 19, suggesting a potential negative influence of early involvement in close romantic relationships. These findings demonstrate the reciprocal nature of romantic relationship functioning and BPD symptoms during adolescence and suggest novel prevention targets for youth at risk for BPD.

Parents’ Personality-Disorder Symptoms Predict Children’s Symptoms of Anxiety and Depressive Disorders – a Prospective Cohort Study

Abstract

Personality disorder (PD) symptomatology is characterized by interpersonal problems and emotional dysregulation, which may affect offspring of parents with PD symptoms. Notably though, studies are needed to discern (i) whether parental PDs forecast symptoms of psychiatric disorders in offspring during their childhood years and (ii) whether such prospective relations obtain after accounting for common causes (e.g., genetics, common methods). To address these issues, we followed up a community sample of Norwegian children biennially from ages 4 to 8 (n = 594), using a semi-structured psychiatric interview (PAPA/CAPA) to capture DSM-IV defined symptoms of emotional disorders. Parental symptoms of personality disorders were captured by the DSM-IV and ICD-10 Personality Questionnaire (DIP-Q), whereas depression and anxiety in caregivers were measured using the Beck Depression Inventory –II and Beck Anxiety Inventory, respectively. Upon applying a hybrid fixed and random effects method that takes into account all unmeasured time-invariant confounders, we found that: (i) Parental symptoms of DSM-IV defined Cluster A and C were related to symptoms of anxiety disorders in offspring two years later, even after accounting for children’s initial levels of anxiety and parental anxiety, whereas (ii) Parental DSM-IV Cluster B predicted symptoms of depressive disorders in children, adjusted for children’s initial levels of depression and parental depression. Clinical implications of the results are discussed.

Depression and ADHD-Related Risk for Substance Use in Adolescence and Early Adulthood: Concurrent and Prospective Associations in the MTA

Abstract

Childhood attention-deficit/hyperactivity disorder (ADHD) is prospectively linked to substance use and disorder. Depression emerging in adolescence is an understudied risk factor that may explain some of this risk. In the present study, we considered mediating and moderating roles of adolescent depression in explaining this association by using longitudinal data from the prospective 16-year follow-up of the Multimodal Treatment Study of ADHD (MTA). Participants were 547 children diagnosed with DSM-IV ADHD Combined Type, and 258 age- and sex-matched comparison children. In adolescence, depressive symptoms did not exacerbate effects of childhood ADHD on any substance use. For both groups, time-varying and average depressive symptoms were associated with more frequent use of all substances. Prospectively, we found no evidence of depression mediation to adult substance use. However, adolescent depression moderated the association between childhood ADHD and adult marijuana use. Although adults without ADHD histories used marijuana more frequently if they had elevated depressive symptoms in adolescence, marijuana use by adults with ADHD histories was independent of their adolescent depression. In adulthood, depression diagnoses and ADHD persistence continued to operate as independent, additive correlates of substance use risk. Our findings suggest a circumscribed role for depression in substance use risk that adds to, but does not alter or explain, ADHD-related risk.

Latent Profiles of Cognitive and Interpersonal Risk Factors for Adolescent Depression and Implications for Personalized Treatment

Abstract

A personalized approach to treatment with patients being matched to the best-fit treatment has been proposed as one possible solution to the currently modest treatment response rates for adolescent depression. Personalized treatment involves identifying and characterizing subgroups likely to respond differently to different treatments. We investigated the feasibility of this approach, by focusing on two key risk factors that are the purported treatment targets of cognitive behavioral therapy (CBT) and interpersonal psychotherapy for depressed adolescents (IPT-A): negative unrealistic cognitions and interpersonal relationship difficulties, respectively. We sought to learn whether subgroups high and low on the two risk factors, respectively, might be identified in a large sample of depressed, treatment-seeking adolescents. Latent class analysis (LCA) was conducted on measures of the two risk factors among 431 adolescents (age 12–17) in the Treatment for Adolescents with Depression Study. LCA identified three classes: (1) adolescents with high levels of problems in both family relationships and cognitions (21.6% of sample), (2) adolescents with moderate levels of problems in both domains (52.4%), and (3) adolescents with low levels of problems in both domains (26.0%). These subgroups did not predict treatment outcome with CBT or CBT + fluoxetine (COMB). The results challenge a current assumption about how treatments could be personalized, and they support a multi-causal model of depression rather than a risk-factor-specific model. Strategies other than risk factor-based personalizing for case assignment to CBT vs. IPT-A are discussed.

Parenting and Youth Onset of Depression Across Three Years: Examining the Influence of Observed Parenting on Child and Adolescent Depressive Outcomes

Abstract

Concurrent associations between parenting behaviors and youth depression are well established. A smaller body of work has demonstrated longitudinal associations between aspects of parenting and youth risk for depression; however, this limited longitudinal work has predominantly relied upon self- and parent-report questionnaire measures and is thus affected by biases related to retrospective recall and common method variance. The present study used behavioral observation measures of parenting and clinical interview measures of youth depression to examine prospective relationships between observed parental support, responsiveness, criticism, and conflict and youths’ onset of a depressive episode in a 3-year longitudinal design. Participants included 585 community youth age 8–16 (M = 11.92, SD = 2.39, 56.6% female) and a participating caregiver. Parental behavior was coded by trained observers in the context of a 5-min conflict resolution discussion at the baseline assessment. Youth onset of depression was subsequently assessed every 6 months for a period of 3 years using the Schedule for Affective Disorders and Schizophrenia for School Aged Children (KSADS) to ascertain whether youth experienced onset of depressive episode over the follow-up. Logistic regression analyses indicated that greater parental conflict at baseline predicted higher odds of youth experiencing a depressive onset across the 3-year follow up period, even after controlling for youth and caregiver history of depression at baseline. Findings suggest that parental conflict is particularly influential in youth vulnerability to depression.

Observed Personality in Preschool: Associations with Current and Longitudinal Symptoms

Abstract

Personality is consistently associated with psychopathology across the lifespan. However, little is known of how observed personality dimensions in preschoolers are associated with concurrent or longitudinal symptoms across development. Spectrum, vulnerability, and pathopolasty models theorize how child personality and psychopathology are related across development. The current study tests these three models using observationally coded personality dimensions in a longitudinal sample of preschoolers. A validated ‘thin slice’ technique was used to code observed Five Factor Model (FFM) personality dimensions of extraversion, agreeableness, conscientiousness, neuroticism, and openness to experience in a clinically enriched preschool sample oversampled for depression (N = 299). Children were followed longitudinally for 9 years while assessing dimensional psychological symptoms and global functioning. Longitudinal multilevel models testing the spectrum, or shared underlying factor model, indicated depressive symptoms in adolescence were predicted by higher preschool extraversion and lower agreeableness and conscientiousness, externalizing symptoms were predicted by lower agreeableness and higher neuroticism, and worse global functioning was predicted by higher extraversion and neuroticism, and lower agreeableness and conscientiousness. Some associations held after accounting for the influence of baseline psychological symptoms, indicating support for a vulnerability relationship between personality and later psychopathology. No support was demonstrated for pathoplasty models such that personality did not influence the developmental course or change of psychopathology over time. Findings indicate personality dimensions measured as early as the preschool period prospectively impact psychopathology and functioning across child development, demonstrating support for both a spectrum and vulnerability relationship between youth personality and psychopathology.

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