OBJECTIVE: To examine the factor structure of attention-deficit/hyperactivity disorder (ADHD) in a clinical sample of 1,373 children and adolescents with ADHD and their 1,772 unselected siblings recruited from different countries across a large age range. Hierarchical and correlated factor analytic models were compared separately in the ADHD and sibling samples, across three different instruments and across parent and teacher informants. Specific consideration was given to factorial invariance analyses across different ages and different countries in the ADHD sample. METHOD: A sample of children and adolescents between 5 and 17 years of age with ADHD and their unselected siblings was assessed. Participants were recruited from seven European countries and Israel. ADHD symptom data came from a clinical interview with parents Parental Account of Childhood Symptoms and questionnaires from parents and teachers (Conners Parent and Teacher). RESULTS: A hierarchical general factor model with two specific factors best represented the structure of ADHD in both the ADHD and unselected sibling groups, and across informants and instruments. The model was robust and invariant with regard to age differences in the ADHD sample. The model was not strongly invariant across different national groups in the ADHD sample, likely reflecting severity differences across the different centers and not any substantial difference in the clinical presentation of ADHD. CONCLUSIONS: The results replicate previous studies of a model with a unitary ADHD component and separable specific traits of inattention and hyperactivity/impulsivity. The unique contribution of this study was finding support for this model across a large developmental and multinational/multicultural sample and its invariance across ages.
OBJECTIVE: To examine the factor structure of attention-deficit/hyperactivity disorder (ADHD) in a clinical sample of 1,373 children and adolescents with ADHD and their 1,772 unselected siblings recruited from different countries across a large age range. Hierarchical and correlated factor analytic models were compared separately in the ADHD and sibling samples, across three different instruments and across parent and teacher informants. Specific consideration was given to factorial invariance analyses across different ages and different countries in the ADHD sample. METHOD: A sample of children and adolescents between 5 and 17 years of age with ADHD and their unselected siblings was assessed. Participants were recruited from seven European countries and Israel. ADHD symptom data came from a clinical interview with parents Parental Account of Childhood Symptoms and questionnaires from parents and teachers (Conners Parent and Teacher). RESULTS: A hierarchical general factor model with two specific factors best represented the structure of ADHD in both the ADHD and unselected sibling groups, and across informants and instruments. The model was robust and invariant with regard to age differences in the ADHD sample. The model was not strongly invariant across different national groups in the ADHD sample, likely reflecting severity differences across the different centers and not any substantial difference in the clinical presentation of ADHD. CONCLUSIONS: The results replicate previous studies of a model with a unitary ADHD component and separable specific traits of inattention and hyperactivity/impulsivity. The unique contribution of this study was finding support for this model across a large developmental and multinational/multicultural sample and its invariance across ages.
Authors: Yannis Paloyelis; Philip Asherson; Mitul A Mehta; Stephen V Faraone; Jonna Kuntsi Journal: Neuropsychopharmacology Date: 2010-08-25 Impact factor: 7.853
Authors: Ueli C Müller; Philip Asherson; Tobias Banaschewski; Jan K Buitelaar; Richard P Ebstein; Jaques Eisenberg; Michael Gill; Iris Manor; Ana Miranda; Robert D Oades; Herbert Roeyers; Aribert Rothenberger; Joseph A Sergeant; Edmund J S Sonuga-Barke; Margaret Thompson; Stephen V Faraone; Hans-Christoph Steinhausen Journal: BMC Psychiatry Date: 2011-04-07 Impact factor: 3.630
Authors: Wai Chen; Kaixin Zhou; Pak Sham; Barbara Franke; Jonna Kuntsi; Desmond Campbell; Karin Fleischman; Jo Knight; Penny Andreou; Renée Arnold; Marieke Altink; Frits Boer; Mary Jane Boholst; Cathelijne Buschgens; Louise Butler; Hanna Christiansen; Ellen Fliers; Raoul Howe-Forbes; Isabel Gabriëls; Alexander Heise; Isabelle Korn-Lubetzki; Rafaela Marco; She'era Medad; Ruud Minderaa; Ueli C Müller; Aisling Mulligan; Lamprini Psychogiou; Nanda Rommelse; Vaheshta Sethna; Henrik Uebel; Peter McGuffin; Robert Plomin; Tobias Banaschewski; Jan Buitelaar; Richard Ebstein; Jacques Eisenberg; Michael Gill; Iris Manor; Ana Miranda; Fernando Mulas; Robert D Oades; Herbert Roeyers; Aribert Rothenberger; Joseph Sergeant; Edmund Sonuga-Barke; Hans-Christoph Steinhausen; Eric Taylor; Margaret Thompson; Stephen V Faraone; Philip Asherson Journal: Am J Med Genet B Neuropsychiatr Genet Date: 2008-12-05 Impact factor: 3.568
Authors: G Leonard Burns; James A Walsh; Mateu Servera; Urbano Lorenzo-Seva; Esther Cardo; Antoni Rodríguez-Fornells Journal: J Abnorm Child Psychol Date: 2013-01
Authors: Flávia Wagner; Michelle M Martel; Hugo Cogo-Moreira; Carlos Renato Moreira Maia; Pedro Mario Pan; Luis Augusto Rohde; Giovanni Abrahão Salum Journal: Eur Child Adolesc Psychiatry Date: 2015-04-17 Impact factor: 4.785
Authors: Benjamin B Lahey; Robert F Krueger; Paul J Rathouz; Irwin D Waldman; David H Zald Journal: Psychol Bull Date: 2016-12-22 Impact factor: 17.737
Authors: J B Richards; D R Lloyd; B Kuehlewind; L Militello; M Paredez; L Solberg Woods; A A Palmer Journal: Genes Brain Behav Date: 2013-06-19 Impact factor: 3.449
Authors: Daniel R Leopold; Micaela E Christopher; G Leonard Burns; Stephen P Becker; Richard K Olson; Erik G Willcutt Journal: J Child Psychol Psychiatry Date: 2016-01-08 Impact factor: 8.982