Maternal ratings of the ADHD symptoms : Subtypes versus severity in clinic-referred children and adolescents
- Authors: Gomez, Rapson , Vance, Alasdair , Gomez, Rashika
- Date: 2016
- Type: Text , Journal article
- Relation: Journal of Attention Disorders Vol. 20, no. 5 (2016), p. 414-423
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- Description: OBJECTIVE: This study used confirmatory factor analysis (CFA), latent class analysis (LCA), and factor mixture model (FMM) to ascertain the best model for ADHD symptoms, as presented in the Strengths and Weaknesses of ADHD-Symptoms and Normal Behavior Scale (SWAN). METHOD: Mother ratings of the ADHD symptoms of 418 clinic-referred children and adolescents were obtained. RESULTS: The findings provided most support for an FMM with two classes (less severe inattention [IA] and hyperactivity/impulsivity [HI] symptoms and more severe IA/HI symptoms) and two factors (IA and HI) model. The more severe class had more individuals with the ADHD diagnosis, especially the combined type. CONCLUSION: The findings are discussed in relation to dimensional and categorical views of ADHD.
Analysis of the convergent and discriminant validity of the CBCL, TRF, and YSR in a clinic-referred sample
- Authors: Gomez, Rapson , Vance, Alasdair , Gomez, Rashika
- Date: 2014
- Type: Text , Journal article
- Relation: Journal of Abnormal Child Psychology Vol. 42, no. 8 (2014), p. 1413-1425
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- Description: This study used the correlated trait-correlated method minus one model to examine the convergent and discriminant validity of the Child Behavior Checklist (CBCL), Teacher's Report Form (TRF) and Youth Self-Report (YSR), based on ratings of clinic-referred adolescents. A total of 294 adolescents, comprising 70.5 % males, provided self-ratings on the YSR. The adolescents were also rated by their mothers and teachers on the CBCL and TRF respectively. The findings indicated some support for convergent validity for the CBCL and TRF for Anxious/Depressed, Withdrawn/Depressed and Rule Breaking Behavior, and for the convergent validity for the CBCL and YSR for Rule Breaking Behavior. There was support for the discriminant validity between virtually all the traits. The findings are discussed in relation to the construct validity, cross-informant agreement, and clinical use of the CBCL, TRF and YSR.
Latent profile analysis of working memory performance in a sample of children with ADHD
- Authors: Gomez, Rapson , Gomez, Rashika , Winther, Jo , Vance, Alasdair
- Date: 2014
- Type: Text , Journal article
- Relation: Journal of Abnormal Child Psychology Vol. 42, no. 8 (2014), p. 1367-1379
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- Description: The current study used latent profile analysis (LPA) to ascertain distinct groups of children with ADHD (N = 701) in terms of performance on working memory (WM) tasks that tapped visuospatial sketchpad, spatial central executive, and verbal central executive functions. It compared the WM performances of these classes with a clinical comparison group (N = 59). The participants' age ranged from 7 to 16 years (586 males, 71 females). The results of the LPA supported three classes. For all three WM tasks, class 1 (N = 196) had more difficulties than classes 2 (N = 394) and 3 (N = 111), and the clinical comparison group. Class 2 had more difficulties than class 3 and the clinical comparison group, and there was no difference between class 3 and the clinical comparison group. Class 1 had lower IQ and academic abilities, and relatively more individuals with depressive disorders. The implications of the findings for understanding ADHD and its treatment are discussed.
The factor structure of anxiety and depressive disorders in a sample of clinic-referred adolescents
- Authors: Gomez, Rapson , Vance, Alasdair , Gomez, Rashika
- Date: 2014
- Type: Text , Journal article
- Relation: Journal of Abnormal Child Psychology Vol. 42, no. 2 (2014), p. 321-332
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- Description: Abstract The current study used confirmatory factor analysis (CFA) to examine the factor structure of anxiety and depressive disorders in a sample of clinic-referred adolescents, aged between 12 and 18 years, for diagnoses based on parent (N = 655; male = 441) and adolescent (N = 626; male = 417) interviews. Three models were examined: a 1-factor model, with all anxiety and depressive disorders in a single factor; a DSM-based 2-factor model, with anxiety disorders in one factor, and depressive disorders in another factor; and an alternate 2-factor model, with fear related anxiety disorders in one factor, and other anxiety and depressive disorders in another factor. The findings indicated support for all three models. Also, ADHD and ODD/CD were associated with only the shared variances between the latent factors in the 2-factor models, and not their unique variance. The implications of the findings for taxonomy, comorbidity, and clinical practice are discussed. © 2013 Springer Science+Business Media New York.
Oppositional defiant disorder: Prevalence based on parent and teacher ratings of Malaysian primary school children
- Authors: Gomez, Rapson , Hafetz, Nina , Gomez, Rashika
- Date: 2013
- Type: Text , Journal article
- Relation: Asian Journal of Psychiatry Vol. 6, no. 4 (2013), p. 299-302
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- Description: Background: This study examined the prevalence rate of Oppositional Defiant Disorder (ODD) in Malaysian primary school children. Methods: In all 934 Malaysian parents and teachers completed ratings of their children using a scale comprising DSM-IV-TR ODD symptoms. Results: Results showed rates of 3.10%, 3.85%, 7.49% and 0.64% for parent, teacher, parent or teacher ("or-rule"), and parent and teacher ("and-rule") ratings, respectively. When the functional impairment criterion was not considered, the rate reported by parents was higher at 13.28%. Discussion: The theoretical, diagnostic and cultural implications of the findings are discussed. © 2013 Elsevier B.V.
- Description: C1
Validity of the ADHD bifactor model in general community samples of adolescents and adults, and a clinic-referred sample of children and adolescents
- Authors: Gomez, Rapson , Vance, Alasdair , Gomez, Rashika
- Date: 2013
- Type: Text , Journal article
- Relation: Journal of Attention Disorders Vol. 20, no. 10 (2013), p. 1-13
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- Description: Objective: This study examined the bifactor models of ADHD in three groups: adolescents from the general community (n = 214), adults from the general community (n = 366), and a clinic sample (n = 245). Method: For the adolescent sample, mothers provided ratings of the ADHD symptoms, and their teachers provided ratings for Emotional Symptoms, Conduct Problems, Hyperactivity, Peer Problems, and Prosocial Behavior. For the adult sample, all adults completed self-ratings of the ADHD symptoms and measures for depression, anxiety, and stress. For the clinic-referred sample, mothers provided ratings of the ADHD symptoms, and they were diagnosed for ADHD, Conduct Disorder/Oppositional Defiant Disorder, anxiety disorders, and depression disorders. Results: The findings for all samples supported the bifactor model, and there were differences in the way the general and specific factors correlated with the external variables. Conclusion: The findings support the validity of the bifactor model. (J. of Att. Dis. 2013; XX(X) 1-XX).