BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is presumed to be heterogeneous, but the best way to describe this heterogeneity remains unclear. Considerable evidence has accrued suggesting that inattention versus hyperactivity-impulsivity symptom domains predict distinct clinical outcomes and may have partially distinct etiological influence. As a result, some conceptualizations emphasize two distinct inputs to the syndrome. Yet formal testing of models that would accommodate such assumptions using modern methods (e.g., second-order factor and bifactor models) has been largely lacking. METHODS: Participants were 548 children (321 boys) between the ages of 6 and 18 years. Of these 548 children, 302 children met DSM-IV criteria for ADHD, 199 were typically developing controls without ADHD, and 47 were classified as having situational or subthreshold ADHD. ADHD symptoms were assessed via parent report on a diagnostic interview and via parent and teacher report on the ADHD Rating Scale. RESULTS: A bifactor model with a general factor and specific factors of inattention and hyperactivity-impulsivity fit best when compared with one-, two-, and three-factor models, and a second-order factor model. CONCLUSIONS: A bifactor model of ADHD latent symptom structure is superior to existing factor models of ADHD. This finding is interpreted in relation to multi-component models of ADHD development, and clinical implications are discussed.
BACKGROUND:Attention-deficit/hyperactivity disorder (ADHD) is presumed to be heterogeneous, but the best way to describe this heterogeneity remains unclear. Considerable evidence has accrued suggesting that inattention versus hyperactivity-impulsivity symptom domains predict distinct clinical outcomes and may have partially distinct etiological influence. As a result, some conceptualizations emphasize two distinct inputs to the syndrome. Yet formal testing of models that would accommodate such assumptions using modern methods (e.g., second-order factor and bifactor models) has been largely lacking. METHODS:Participants were 548 children (321 boys) between the ages of 6 and 18 years. Of these 548 children, 302 children met DSM-IV criteria for ADHD, 199 were typically developing controls without ADHD, and 47 were classified as having situational or subthreshold ADHD. ADHD symptoms were assessed via parent report on a diagnostic interview and via parent and teacher report on the ADHD Rating Scale. RESULTS: A bifactor model with a general factor and specific factors of inattention and hyperactivity-impulsivity fit best when compared with one-, two-, and three-factor models, and a second-order factor model. CONCLUSIONS: A bifactor model of ADHD latent symptom structure is superior to existing factor models of ADHD. This finding is interpreted in relation to multi-component models of ADHD development, and clinical implications are discussed.
Authors: Mark L Wolraich; E Warren Lambert; Anna Baumgaertel; Santiago Garcia-Tornel; Irene D Feurer; Leonard Bickman; Melissa A Doffing Journal: J Abnorm Child Psychol Date: 2003-08
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: Shawn J Latendresse; David B Henry; Steven H Aggen; Gayle R Byck; Alan W Ashbeck; John M Bolland; Cuie Sun; Brien P Riley; Brian Mustanski; Danielle M Dick Journal: J Clin Child Adolesc Psychol Date: 2015-10-29