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Article: Attention-deficit/hyperactivity disorder dimensionality: the reliable ‘g’ and the elusive ‘s’ dimensions

TitleAttention-deficit/hyperactivity disorder dimensionality: the reliable ‘g’ and the elusive ‘s’ dimensions
Authors
KeywordsHierarchical
ADHD
Bifactor model
Impulsivity
Confirmatory factor analysis
Issue Date2016
Citation
European Child and Adolescent Psychiatry, 2016, v. 25, n. 1, p. 83-90 How to Cite?
Abstract© 2015, Springer-Verlag Berlin Heidelberg. The best structural model for attention-deficit/hyperactivity disorder (ADHD) symptoms remains a matter of debate. The objective of this study is to test the fit and factor reliability of competing models of the dimensional structure of ADHD symptoms in a sample of randomly selected and high-risk children and pre-adolescents from Brazil. Our sample comprised 2512 children aged 6–12 years from 57 schools in Brazil. The ADHD symptoms were assessed using parent report on the development and well-being assessment (DAWBA). Fit indexes from confirmatory factor analysis were used to test unidimensional, correlated, and bifactor models of ADHD, the latter including “g” ADHD and “s” symptom domain factors. Reliability of all models was measured with omega coefficients. A bifactor model with one general factor and three specific factors (inattention, hyperactivity, impulsivity) exhibited the best fit to the data, according to fit indices, as well as the most consistent factor loadings. However, based on omega reliability statistics, the specific inattention, hyperactivity, and impulsivity dimensions provided very little reliable information after accounting for the reliable general ADHD factor. Our study presents some psychometric evidence that ADHD specific (“s”) factors might be unreliable after taking common (“g” factor) variance into account. These results are in accordance with the lack of longitudinal stability among subtypes, the absence of dimension-specific molecular genetic findings and non-specific effects of treatment strategies. Therefore, researchers and clinicians might most effectively rely on the “g” ADHD to characterize ADHD dimensional phenotype, based on currently available symptom items.
Persistent Identifierhttp://hdl.handle.net/10722/288685
ISSN
2023 Impact Factor: 6.0
2023 SCImago Journal Rankings: 2.175
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWagner, Flávia-
dc.contributor.authorMartel, Michelle M.-
dc.contributor.authorCogo-Moreira, Hugo-
dc.contributor.authorMaia, Carlos Renato Moreira-
dc.contributor.authorPan, Pedro Mario-
dc.contributor.authorRohde, Luis Augusto-
dc.contributor.authorSalum, Giovanni Abrahão-
dc.date.accessioned2020-10-12T08:05:36Z-
dc.date.available2020-10-12T08:05:36Z-
dc.date.issued2016-
dc.identifier.citationEuropean Child and Adolescent Psychiatry, 2016, v. 25, n. 1, p. 83-90-
dc.identifier.issn1018-8827-
dc.identifier.urihttp://hdl.handle.net/10722/288685-
dc.description.abstract© 2015, Springer-Verlag Berlin Heidelberg. The best structural model for attention-deficit/hyperactivity disorder (ADHD) symptoms remains a matter of debate. The objective of this study is to test the fit and factor reliability of competing models of the dimensional structure of ADHD symptoms in a sample of randomly selected and high-risk children and pre-adolescents from Brazil. Our sample comprised 2512 children aged 6–12 years from 57 schools in Brazil. The ADHD symptoms were assessed using parent report on the development and well-being assessment (DAWBA). Fit indexes from confirmatory factor analysis were used to test unidimensional, correlated, and bifactor models of ADHD, the latter including “g” ADHD and “s” symptom domain factors. Reliability of all models was measured with omega coefficients. A bifactor model with one general factor and three specific factors (inattention, hyperactivity, impulsivity) exhibited the best fit to the data, according to fit indices, as well as the most consistent factor loadings. However, based on omega reliability statistics, the specific inattention, hyperactivity, and impulsivity dimensions provided very little reliable information after accounting for the reliable general ADHD factor. Our study presents some psychometric evidence that ADHD specific (“s”) factors might be unreliable after taking common (“g” factor) variance into account. These results are in accordance with the lack of longitudinal stability among subtypes, the absence of dimension-specific molecular genetic findings and non-specific effects of treatment strategies. Therefore, researchers and clinicians might most effectively rely on the “g” ADHD to characterize ADHD dimensional phenotype, based on currently available symptom items.-
dc.languageeng-
dc.relation.ispartofEuropean Child and Adolescent Psychiatry-
dc.subjectHierarchical-
dc.subjectADHD-
dc.subjectBifactor model-
dc.subjectImpulsivity-
dc.subjectConfirmatory factor analysis-
dc.titleAttention-deficit/hyperactivity disorder dimensionality: the reliable ‘g’ and the elusive ‘s’ dimensions-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s00787-015-0709-1-
dc.identifier.pmid25877403-
dc.identifier.scopuseid_2-s2.0-84952864726-
dc.identifier.volume25-
dc.identifier.issue1-
dc.identifier.spage83-
dc.identifier.epage90-
dc.identifier.eissn1435-165X-
dc.identifier.isiWOS:000367594400010-
dc.identifier.issnl1018-8827-

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