Negative Parenting Mediates the Longitudinal Association between Parental Internalizing Symptoms and Child Oppositional Symptoms.

Research has pointed to both cross-sectional and longitudinal associations between parental internalizing symptoms and child externalizing symptoms. This study analyzed whether the association is mediated by negative parenting behavior in view of previous reports that both parental internalizing symptoms and child externalizing symptoms are related to parenting behaviors. Longitudinal data for the current analyses were derived from a randomized controlled trial on the efficacy of a web-assisted self-help intervention for parents of children with elevated levels of externalizing symptoms. Two different mediation models were analyzed, one using attention-deficit/hyperactivity disorder (ADHD) symptoms as the dependent variable and the other using oppositional defiant disorder (ODD) symptoms. Both models included parental internalizing symptoms as the independent variable, negative parenting behavior as a mediator, and study condition as a confounder. The longitudinal analyses support the mediating role of negative parenting behavior in the association between early parental internalizing symptoms and later child ODD symptoms.

Child-therapist and parent-therapist alliances and outcome in the treatment of children with oppositional defiant/conduct disorder.

OBJECTIVE: This study examined the quality of therapeutic alliance from different rater perspectives (child, parent, therapist) in cognitive behavioural therapy for children with oppositional defiant disorder (ODD) and conduct disorder (CD), and its association with symptom severity. Further, a panel model with an autoregressive cross-lagged panel design was used to explore whether therapist-rated and parent-rated therapeutic alliance influences change in symptom severity, or vice versa. METHODS: Sixty boys aged 6-12 years with a principal diagnosis of ODD/CD, and their parents, received individually delivered social competence training for childhood aggressive behaviour problems. Child, therapist, and parent ratings of therapeutic alliance and symptom severity were measured twice. RESULTS: Our results indicate good to very good therapeutic alliance that was relatively stable over time. The cross-sectional analyses of the alliance-symptom association revealed moderate correlations. However, effects of early alliance on later treatment outcome or of early symptom severity on later alliance were marginal. The only significant association was found between early parent-rated therapist-parent alliance and later parent-rated symptom severity. CONCLUSION: Our study shows a moderate correlation between simultaneously assessed therapeutic alliance and symptoms. The findings of the panel model indicate that an early good therapeutic alliance is a component of later therapeutic success (parent perspective).

Validation of a new emotion regulation self-report questionnaire for children.

OBJECTIVE: To examine and validate the self-report Questionnaire on the Regulation of Unpleasant Moods in Children (FRUST), which is a modified and shortened version of the Questionnaire for the Assessment of Emotion Regulation in Children and Adolescents (FEEL-KJ). METHODS: The data comprised child and parent ratings of a community-screened sample with differing levels of affective dysregulation (AD) (N = 391, age: M = 10.64, SD = 1.33, 56% male). We conducted latent factor analyses to establish a factor structure. Subsequently, we assessed measurement invariance (MI) regarding age, gender, and AD level and evaluated the internal consistencies of the scales. Finally, we examined the convergent and divergent validity of the instrument by calculating differential correlations between the emotion regulation strategy (ERS) scales and self- and parent-report measures of psychopathology. RESULTS: A four-factor model, with one factor representing Dysfunctional Strategies and the three factors Distraction, Problem-Solving and Social Support representing functional strategies provided the best fit to our data and was straightforward to interpret. We found strong MI for age and gender and weak MI for AD level. Differential correlations with child and parent ratings of measures of psychopathology supported the construct validity of the factors. CONCLUSIONS: We established a reliable and valid self-report measure for the assessment of ERS in children. Due to the reduced number of items and the inclusion of highly specific regulatory behaviors, the FRUST might be a valuable contribution to the assessment of ER strategies for diagnostic, therapeutic, and research purposes.

Process Mechanisms in Behavioral Versus Nondirective Guided Self-help for Parents of Children with Externalizing Behavior.

The study examined potential mediating effects of therapist behaviors in the per-protocol sample (n = 108) of a randomized controlled trial comparing a behavioral and a nondirective guided self-help intervention for parents of children with externalizing disorders (4-11 years). Additionally, from an exploratory perspective, we analyzed a sequential model with parental adherence as second mediator following therapist behavior. Outcomes were child symptom severity of attention-deficit/hyperactivity disorder (ADHD) and oppositional defiant disorder rated by blinded clinicians, and parent-rated child functional impairment. We found a significant indirect effect on the reduction of ADHD and functional impairment through emotion- and relationship-focused therapist behavior in the nondirective intervention. Additionally, we found limited support for an extended sequential mediation effect through therapist behavior and parental adherence in the models for these outcomes. The study proposes potential mediating mechanisms unique to the nondirective intervention and complements previous findings on mediator processes in favor of the behavioral group. Trial registration ClinicalTrials.gov NCT01350986.

Parenting Behaviors as Mediators of the Association Between Parental Internalizing Symptoms and Child Externalizing Symptoms.

This study analyzes whether the association between parental internalizing symptoms (depression, anxiety, stress) and child symptoms of attention-deficit/hyperactivity disorder (ADHD) or oppositional defiant disorder (ODD) is mediated by positive and negative parenting behaviors. Cross-sectional data of 420 parents of children (age 6-12 years) with elevated levels of externalizing symptoms were collected in a randomized controlled trial. Measures included parent ratings of their internalizing symptoms and parenting behaviors and of their child's externalizing symptoms. Two mediation models were examined, one including ADHD symptoms and one including ODD symptoms as the dependent variable. Parental internalizing symptoms were modeled as the independent variable and positive and negative parenting behaviors were modeled as parallel mediators. Regression analyses support negative parenting behavior as a mediator of the association between parental internalizing symptoms and child ODD symptoms. For the ADHD model, no significant mediator could be found. Future studies should use prospective designs and consider reciprocal associations.

Negative parenting behaviour as a mediator of the effects of telephone-assisted self-help for parents of pharmacologically treated children with attention-deficit/hyperactivity disorder.

A previous randomised controlled trial demonstrated the effects of a telephone-assisted self-help (TASH) intervention for parents of pharmacologically treated children with attention-deficit/hyperactivity disorder (ADHD) on ADHD symptoms, oppositional symptoms, functional impairment, and negative parenting behaviour (per-protocol analyses). In the current study, we examined whether changes in positive and negative parenting behaviour mediated the effects on symptoms and impairment. Parents in an enhancement group (n = 51) participated in a 12-month TASH intervention (eight booklets plus up to 14 telephone consultations) as an adjunct to routine clinical care, whereas parents in a waitlist control group (n = 52) received routine clinical care only. Parents completed measures of child symptoms, child functional impairment, and parenting behaviour at baseline, at 6 months, and at 12 months. The mediating effects of parenting behaviour were examined using regression analyses. Per-protocol analyses (n = 74) revealed a significant indirect intervention effect on functional impairment through negative parenting behaviour at 6 months as well as indirect intervention effects on oppositional symptoms and functional impairment through negative parenting behaviour at 12 months. The indirect effect on ADHD symptoms through negative parenting behaviour at 12 months just failed to reach significance. The analyses yielded no indirect intervention effects through positive parenting behaviour. The study provides some, albeit limited, support for the importance of changes in negative parenting behaviour to achieve changes in symptoms and functional impairment during parent training. In consideration of the inconsistent results of previous studies concerning the mediating role of positive and negative parenting behaviour, further research is required to better understand the mechanisms of change during parent training, also including other possible mediators like parenting stress and parental self-efficacy.

The Improvement of Individually Defined Problem Behaviors During a Telephone-Assisted Self-Help Intervention for Parents of Pharmacologically Treated Children with ADHD.

Background: This study examined change in individually defined problem behaviors during a telephone-assisted self-help (TASH) intervention for parents of children with attention-deficit/hyperactivity disorder (ADHD). Method: Parents of children with ADHD and functional impairment despite methylphenidate treatment participated in a 12-month TASH intervention (8 self-help booklets plus up to 14 counseling telephone calls). The severity of three individually defined target problems, of ADHD symptoms, and oppositional symptoms were rated at baseline and after 6 and 12 months; parental satisfaction with the intervention was assessed after 12 months. The problems were categorized according to the type of behavior and the disorder to which they were related (ADHD vs. oppositional symptoms). Results: Repeated measures analyses of variance revealed a significant decrease in problem severity during the intervention. The change in problem severity was greater than the change in ADHD and oppositional symptoms. Correlations between problem severity and symptom severity were low to moderate. Correlations between the change in problem severity and parental satisfaction were moderate. Discussion: The decrease in the individual problem severity during TASH is stronger than the decrease in ADHD and oppositional symptoms. Individually defined problems should be attended to in psychotherapy research to avoid underestimating the benefit of interventions by solely considering standardized measures.

Psychometric properties of a modified version of the Weiss Functional Impairment Rating Scale-Parent Report (WFIRS-P) in a clinical sample of children with aggressive behavior.

PURPOSE: To evaluate the psychometric properties of a German modification of the Weiss Functional Impairment Rating Scale-Parent Report for children with aggressive and oppositional behavior problems (WFIRS-P for ODD/CD). METHODS: Data were collected from a clinical sample of children (6-12 years; 96% boys) with oppositional defiant disorder (ODD) and conduct disorder (CD) (N = 219). The WFIRS-P conceptual framework was evaluated using confirmatory factor analyses (CFA). Reliability was estimated using internal consistency (Cronbach's alpha) and omega statistics. Validity was assessed through correlations between WFIRS-P for ODD/CD domain scores and parent-rated scales on symptoms of ODD, CD, attention-deficit/hyperactivity disorder (ADHD), a broad range of other behavioral and emotional problems, and scales on health-related quality of life and family burden. RESULTS: CFA of the WFIRS-P for ODD/CD revealed that a bifactor model, with a general factor accounting for common variance (ωH = 0.23-0.48) and independent specific group factors accounting for additional variance in item scores (ωS = 0.37-0.60), best fits the data. Thus, CFA confirmed the theoretical assumption of a general construct of impairment (total scale) and additional specific impairments (subscales, e.g., family, social activities). Cronbach's alpha coefficient exceeded 0.70 for all subscales. Omega statistics showed that both the general construct and specific factors accounted for item variance. As expected, correlations with symptoms scales for ODD/CD and ADHD were low to moderate. CONCLUSIONS: The use of the parent-rated WFIRS for ODD/CD in identifying ODD- and CD-related impairment in children is psychometrically supported. The scale can be employed to assess functional impairment in children with aggressive behavior problems.

Analysing the impact of a case management model on the specialised palliative care multi-professional team.

PURPOSE: Palliative care (PC) involves many health care providers leading to a high complexity of structures that requires efficient coordination as provided by case management (CM). Our study aimed to evaluate the effects of CM newly implemented in a specialised palliative care unit by evaluating team members' tasks and time resources before (T0) and after implementation (T1). It was hypothesised that team members would be able to spend less time on organisational and administrative tasks and more time on patient care. METHODS: A prospective pre-post study design was used. Time distribution of different tasks at T0 and T1 was compared between three different professional groups: physicians, nursing staff and social work. To document their tasks and time required, a documentation form with several items for each profession was developed. Data was analysed using t tests for independent samples. RESULTS: After Bonferroni correction, a significant pre-post difference was found for the time spent on "discharge interview and discharge" as rated by the physicians (p < .001) with less time spent on this activity after CM implementation. The nursing staff had significantly more time for "conversations with patients" (p < .001) after CM implementation. Moreover, they spent significantly less time on "patient-related requests/advice by telephone" (p < .001) and "discussions with relatives/participation in family discussions" at post-assessment (p < .001). The social worker had significantly more time for "patient advice and support services" (p = .013) after CM implementation. CONCLUSIONS: Integrating CM can be time efficient and ensures team members to spend more time on their core tasks in patient care.

Telephone-assisted self-help for parents of children with attention-deficit/hyperactivity disorder who have residual functional impairment despite methylphenidate treatment: a randomized controlled trial.

BACKGROUND: Self-help parenting interventions have been shown to be effective in the management of children with attention-deficit/hyperactivity disorder (ADHD) and may be useful when there are barriers to face-to-face therapist-led parent trainings. Previous studies indicate that behavioral interventions might be a useful adjunct to medication in children with residual ADHD symptoms, and regarding comorbid oppositional symptoms and multiple domains of functional impairment. In the present study, we examined whether a telephone-assisted self-help (TASH) parenting behavioral intervention (written materials plus telephone counseling) enhanced the effects of methylphenidate treatment in children with ADHD. METHODS: In this randomized controlled trial, parents of 103 school-aged children with ADHD and residual functional impairment despite methylphenidate treatment were randomly assigned to either the enhancement group, which received the TASH intervention as adjunct to routine clinical care (including continued medication), or to the active control group, which received routine clinical care only (including continued medication). Parent-completed outcome measures at baseline and at 12 months (postassessment) included functional impairment, ADHD symptoms, oppositional defiant disorder (ODD) symptoms, parenting behavior, and parental satisfaction with the intervention (ClinicalTrials.gov: NCT01660425; URL: https://clinicaltrials.gov/ct2/show/NCT01660425). RESULTS: Intention-to-treat analyses of covariance (ANCOVAs), which controlled for baseline data, revealed significant and moderate intervention effects for ODD symptoms and negative parenting behavior at the postassessment, whereas per-protocol analyses additionally showed significant and moderate effects on functional impairment (primary outcome). Parents expressed high satisfaction with the program. CONCLUSIONS: The TASH program enhances effects of methylphenidate treatment in families who complete the intervention. The discontinuation rate of about 30% and comparison between completing and discontinuing families suggest that the program may be more suitable for families with a higher educational level and fewer additional stresses.

ESCAschool study: trial protocol of an adaptive treatment approach for school-age children with ADHD including two randomised trials.

BACKGROUND: The ESCAschool study addresses the treatment of school-age children with attention-deficit/hyperactivity disorder (ADHD) in a large multicentre trial. It aims to investigate three interrelated topics: (i) Clinical guidelines often recommend a stepped care approach, including different treatment strategies for children with mild to moderate and severe ADHD symptoms, respectively. However, this approach has not yet been empirically validated. (ii) Behavioural interventions and neurofeedback have been shown to be effective, but the superiority of combined treatment approaches such as medication plus behaviour therapy or medication plus neurofeedback compared to medication alone remains questionable. (iii) Growing evidence indicates that telephone-assisted self-help interventions are effective in the treatment of ADHD. However, larger randomised controlled trials (RCTs) are lacking. This report presents the ESCAschool trial protocol. In an adaptive treatment design, two RCTs and additional observational treatment arms are considered. METHODS: The target sample size of ESCAschool is 521 children with ADHD. Based on their baseline ADHD symptom severity, the children will be assigned to one of two groups (mild to moderate symptom group and severe symptom group). The adaptive design includes two treatment phases (Step 1 and Step 2). According to clinical guidelines, different treatment protocols will be followed for the two severity groups. In the moderate group, the efficacy of telephone-assisted self-help for parents and teachers will be tested against waitlist control in Step 1 (RCT I). The severe group will receive pharmacotherapy combined with psychoeducation in Step 1. For both groups, treatment response will be determined after Step 1 treatment (no, partial or full response). In severe group children demonstrating partial response to medication, in Step 2, the efficacy of (1) counselling, (2) behaviour therapy and (3) neurofeedback will be tested (RCT II). All other treatment arms in Step 2 (severe group: no or full response; moderate group: no, partial or full response) are observational. DISCUSSION: The ESCAschool trial will provide evidence-based answers to several important questions for clinical practice following a stepped care approach. The adaptive study design will also provide new insights into the effects of additional treatments in children with partial response. TRIAL REGISTRATION: German Clinical Trials Register (DRKS) DRKS00008973 . Registered 18 December 2015.

Behavioural and nondirective parent training for children with externalising disorders: First steps towards personalised treatment recommendations.

For children with externalising disorders, parent training programmes with different theoretical foundations are available. Currently, there is little knowledge concerning which programme should be recommended to a family based on their individual needs (e.g., single parenthood). The personalised advantage index (PAI) indicates the predicted treatment advantage of one treatment over another. The aim of the present study was to examine the usefulness of this score in providing individualised treatment recommendations. The analysis considered 110 parents (per-protocol sample) of children (4-11 years) with attention-deficit/hyperactivity (ADHD) or oppositional defiant disorder (ODD), randomised to either a behavioural or a nondirective telephone-assisted self-help parent training. In multiple moderator analyses with four different regression algorithms (linear, ridge, k-nearest neighbors, and tree), the linear model was preferred for computing the PAI. For ODD, families randomised to their PAI-predicted optimal intervention showed a treatment advantage of d = 0.54, 95% CI [0.17, 0.97]; for ADHD, the advantage was negligible at d = 0.35, 95% CI [-0.01, 0.78]. For children with conduct problems, it may be helpful if the PAI includes the treatment moderators single parent status and ODD baseline symptoms when providing personalised treatment recommendations for the selection of behavioural versus nondirective parent training. TRIAL REGISTRATION: The study was registered prospectively with ClinicalTrials.gov (Identifier NCT01350986).

Effects of Computer-Assisted Social Skills Training in Children With Disruptive Behavior Disorders: A Randomized Controlled Trial.

OBJECTIVE: Computer-assisted child-focused interventions are expected to improve efficiency and personalization of therapist-led treatments for children and adolescents. However, therapist-led, outpatient interventions using computer assistance are lacking for children with oppositional defiant disorder (ODD) or conduct disorder (CD). The present randomized controlled trial examined the efficacy of individualized computer-assisted social skills training for children with aggressive behavior compared to a resource activation intervention. METHOD: A total of 100 children aged 6-12 years with a diagnosis of ODD/CD and peer-related aggression were randomly (1:1) assigned to either individually delivered computer-assisted social skills training (ScouT) or an individually delivered supportive resource activation treatment (STARK). The primary outcome was parent-rated peer-related aggression, assessed with the respective scale of the Questionnaire for Aggressive Behavior of Children (FAVK) and measured at pre-assessment and after the 16-week intervention (post-assessment). Further parent-, self-, teacher- and/or clinician-rated outcomes included ODD and CD symptoms, a wide range of behavioral and emotional symptoms, callous-unemotional traits, functional impairment, and quality of life. RESULTS: After correcting for multiple testing, analyses of covariance comparing the efficacy of ScouT to the efficacy of STARK yielded small to moderate treatment effects in favor of the ScouT condition regarding parent-rated peer-related aggression (primary outcome; d = -0.64, 95% CI = -1.05, -0.24), parent-rated callous and uncaring traits, and parent-rated quality of life. However, the analyses did not reveal any significant effects for self- or teacher-rated peer-related aggression assessed with the respective scale of the FAVK (self-report: d = -0.21, 95% CI = -0.69, 0.29; teacher rating: d = -0.17, 95% CI = -0.56, 0.22). Moreover, after controlling for multiple comparisons, no significant effects emerged for the following: parent-, self-, and teacher-rated adult-related aggression; parent-, self-, teacher-, and clinician-rated ODD and CD symptoms; parent-, self-, and teacher-rated emotional and behavioral symptoms; and parent-rated functional impairment. CONCLUSION: According to parent ratings, school-age children with disruptive behavior disorders and peer-related aggression seem to benefit more from individualized, computer-assisted social skills training than from resource activation treatment. However, this conclusion is limited by the missing effects on the clinician-, self-, and teacher-rated measures. CLINICAL TRIAL REGISTRATION INFORMATION: Treatment of Children With Peer Related Aggressive Behavior (ScouT); https://clinicaltrials.gov/; NCT02143427.

The importance of familial risk factors in children with ADHD: direct and indirect effects of family adversity, parental psychopathology and parenting practices on externalizing symptoms.

BACKGROUND: Children experiencing unfavorable family circumstances have an increased risk of developing externalizing symptoms. The present study examines the direct, indirect and total effects of family adversity, parental psychopathology, and positive and negative parenting practices on symptoms of attention-deficit/hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD) in children with ADHD. METHODS: Data from 555 children (M = 8.9 years old, 80.5% boys) who participated in a multicenter study on the treatment of ADHD (ESCAschool) were analyzed using structural equation modeling (SEM). RESULTS: The SEM analyses revealed that (a) family adversity and parental psychopathology are associated with both child ADHD and ODD symptoms while negative parenting practices are only related to child ODD symptoms; (b) family adversity is only indirectly associated with child ADHD and ODD symptoms, via parental psychopathology and negative parenting practices; (c) the detrimental effect of negative parenting practices on child ADHD and ODD symptoms is stronger in girls than in boys (multi-sample SEM); (d) there are no significant associations between positive parenting practices and child ADHD or ODD symptoms. CONCLUSIONS: Family adversity, parental psychopathology, and negative parenting practices should be routinely assessed by clinicians and considered in treatment planning. Trial registration (18th December 2015): German Clinical Trials Register (DRKS) DRKS00008973.

Efficacy of Omega-3/Omega-6 Fatty Acids in Preschool Children at Risk of ADHD: A Randomized Placebo-Controlled Trial.

Objective: To evaluate the efficacy of an Omega-3/Omega-6 fatty acid supplement in preschool children at risk for ADHD. Method: Forty preschool children with elevated levels of ADHD symptoms were randomly assigned to either a verum or a placebo group. Children in the verum group received a 4-month treatment with Omega-3/Omega-6 fatty acids. Outcome measures comprised parent- and teacher-rated ADHD symptoms, which were the primary outcome variables, internalizing and externalizing problems, and intellectual abilities. Results: Intention-to-treat analyses of covariance, controlling for age and baseline data, revealed effects on parent- and teacher-rated ADHD symptoms (primary outcomes; parent ratings: F = 4.51, df = 1, p = .04, d = 0.63; teacher ratings: F = 4.67, df = 1, p = .04, d = 0.70), parent-rated internalizing symptoms (F = 8.47, df = 1, p < .01, d = 0.63), and parent- and teacher-rated externalizing symptoms (parent ratings: F = 4.58, df = 1, p = .04, d = 0.54; teacher ratings: F = 5.99, df = 1, p = .02, d = 0.79). Analyses involving only cases with available data yielded significant moderate effects on teacher-rated inattention symptoms (F = 4.60, df = 1, p = .04, d = 0.79) and parent-rated internalizing problems (F = 6.04, df = 1, p = .02, d = 0.57). Conclusion: The intention-to-treat analyses provide some evidence for positive effects of Omega-3/Omega-6 fatty acids. However, the results require replication in larger samples to allow for firm conclusions for practice.

Children with Attention-Deficit/Hyperactivity Disorder Grown Up: An 18-Year Follow-Up after Multimodal Treatment.

OBJECTIVE: ADHD treatment has positive effects on behavioral symptoms and psychosocial functioning, but studies that follow children treated for ADHD into adulthood are rare. METHOD: This follow-up study assessed symptom severity and functional outcomes of adults (n = 70) who had received individualized ADHD treatment in the Cologne Adaptive Multimodal Treatment (CAMT) Study at ages 6 to 10 years. RESULTS: Despite symptomatic improvement, participants reported poorer educational and occupational outcomes than expected (e.g., currently unemployed: 17%). They had also been in contact with the justice system more often than expected (e.g., lifetime convictions: 33%) and were impaired on health-related outcomes (e.g., substance use problems: 15%). Several social outcomes were favorable (e.g., long-term relationship/married: 63%). CONCLUSION: Compared to the general population or norm samples, CAMT participants had a higher relative risk (RR) of functional impairments, demonstrating the need for continued support for a substantial proportion of the young adults.

Dimensions of Autistic Traits Rated by Parents of Children and Adolescents with Suspected Autism Spectrum Disorders.

To examine the factor structure of autism spectrum disorder (ASD) and the psychometric properties of the German Symptom Checklist for Autism Spectrum Disorders (SCL-ASD). Data were collected from 312 clinical referrals with suspected ASD (2-18 years). Confirmatory factor analyses and analyses of reliability, convergent and divergent validity were performed. A bifactor model with one general ASD factor and two specific factors (interaction-communication; restricted, repetitive behaviors) provided an adequate data fit. Internal consistencies of the SCL-ASD subscales and the total scale were > .70. Correlations with measures of ASD traits were higher than correlations with measures of externalizing and internalizing symptoms. The results support a factor structure consistent with DSM-5/ICD-11 criteria. The SCL-ASD has sound psychometric properties.

Long-Term Effectiveness of Guided Self-Help for Parents of Children With ADHD in Routine Care-An Observational Study.

Objective:To assess long-term effectiveness of guided self-help for parents of children with ADHD under routine care conditions. Method: 6- to 12-year-old children diagnosed with ADHD were enrolled in an observational study on a 1-year telephone-assisted parent-administered behavioral intervention. N = 136 families who completed the intervention participated in a follow-up assessment. Pre-, post-, and follow-up data were analyzed by repeated measures ANOVA with planned contrasts. Clinical significance was analyzed according to the reliable change index. Results: Child ADHD symptoms (primary outcome), oppositional defiant disorder (ODD) symptoms, overall behavioral problems, and quality of life improved during the intervention. There was a further improvement in ADHD symptoms at follow-up, with a medium effect size. Improvements during treatment in ODD symptoms, overall behavioral problems, and quality of life were maintained at follow-up. Conclusion: The findings suggest that telephone-assisted self-help interventions may result in a long-term reduction of child behavior problems.

Disentangling symptoms of externalizing disorders in children using multiple measures and informants.

The trait impulsivity theory suggests that a single, highly heritable externalizing liability factor, expressed as temperamental trait impulsivity, represents the core vulnerability for externalizing disorders. The present study sought to test the application of latent factor models derived from this theory to a clinical sample of children. Participants were 474 German children (age 6-12 years, 81% male) with symptoms of attention-deficit/hyperactivity disorder and externalizing behavior problems participating in an ongoing multicenter intervention study. Using confirmatory factor analyses (CFA) and exploratory structural equation modeling (ESEM), we evaluated several factor models of externalizing spectrum disorders (unidimensional; first-order correlated factors; higher-order factor; fully symmetrical bifactor; bifactor S-1 model). Furthermore, we assessed our prevailing factor models for measurement invariance across raters (clinicians, parents, teachers) and assessment modes (interview, questionnaires). While both CFA and ESEM approaches provided valuable insights into the multidimensionality, ESEM solutions were generally superior since they showed a substantially better model fit and less biased factor loadings. Among the models tested, the bifactor S-1 CFA/ESEM models, with a general hyperactivity-impulsivity reference factor, displayed a statistically sound factor structure and allowed for straightforward interpretability. Furthermore, these models showed the same organization of factors and loading patterns, but not equivalent item thresholds across raters and assessment modes, highlighting cross-situational variability in child behavior. Our findings are consistent with the assumption of the trait impulsivity theory that a common trait, presented as hyperactivity-impulsivity symptoms, underlies all externalizing disorders. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Applying the Bifactor S-1 Model to Ratings of ADHD/ODD Symptoms: A Commentary on Burns et al. (2019) and a Re-Analysis.

To examine the construct validity of attention-deficit/hyperactivity disorder (ADHD) and oppositional defiant disorder (ODD), the bifactor S-1 approach has been applied as an alternative to the fully symmetrical bifactor models in order to eliminate anomalous results and to allow for an unambiguous interpretation of g- and s-factors. We compared and contrasted our results with those of Burns et al. (2019) and extended their analyses by taking into account a two- vs. a three-factor structure of ADHD. Data from our previous research were reanalyzed and reinterpreted in accordance with the bifactor S-1 approach, constructing different models with hyperactivity (HY), impulsivity (IM) or hyperactivity/impulsivity (HI) as the general factor. No anomalous results were observed. All factor loadings were significant. Our results were comparable to those reported by Burns et al. (2019), although items from the specific subscales inattention (IN) and ODD accounted for more variance in our sample. Model fit for our HI model was comparable to that in Burns et al. (2019). In our sample, model fit was best when solely HY or IM was chosen as a general reference factor. However, in these cases, the remaining specific factor IM or HY was weakly defined. Overall, we were able to replicate the results found by Burns et al. 2019), although our factor loadings on the g-factor were slightly lower and our specificity regarding IN and ODD was slightly higher. Our results support a two-factor structure of ADHD/ODD in a clinical population.