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Research on Child and Adolescent Psychopathology

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01-01-2014

The Internal and External Validity of Sluggish Cognitive Tempo and its Relation with DSM–IV ADHD

Auteurs: Erik G. Willcutt, Nomita Chhabildas, Mikaela Kinnear, John C. DeFries, Richard K. Olson, Daniel R. Leopold, Janice M. Keenan, Bruce F. Pennington

Gepubliceerd in: Research on Child and Adolescent Psychopathology | Uitgave 1/2014

Abstract

Studies of subtypes of DSM-IV attention-deficit/hyperactivity disorder (ADHD) have provided inconsistent support for the discriminant validity of the combined type (ADHD-C) and predominantly inattentive type (ADHD-I). A large sample of children and adolescents with ADHD (N = 410) and a comparison group without ADHD (N = 311) were used to test the internal and external validity of sluggish cognitive tempo (SCT), a dimension characterized by low energy and sleepy and sluggish behavior. SCT scores were then incorporated in analyses of ADHD subtypes to test whether the discriminant validity of ADHD-C and ADHD-I could be improved by including SCT symptoms as part of the criteria for ADHD-I. Factor analyses of parent and teacher ratings indicated that six SCT items loaded on a factor separate from symptoms of ADHD and other psychopathology, providing important support for the internal validity of SCT. The external validity of SCT was supported by significant associations between SCT and measures of functional impairment and neuropsychological functioning when symptoms of ADHD and other psychopathology were controlled. However, contrary to initial predictions, high levels of SCT did not identify a subgroup of ADHD-I that was clearly distinct from ADHD-C. Instead, the current results suggest that DSM-IV inattention and SCT are separate but correlated symptom dimensions that are each independently associated with important aspects of functional impairment and neuropsychological functioning.

vorige artikel Validity of the Sluggish Cognitive Tempo Symptom Dimension in Children: Sluggish Cognitive Tempo and ADHD-Inattention as Distinct Symptom Dimensions

volgende artikel Structure and Validity of Sluggish Cognitive Tempo Using an Expanded Item Pool in Children with Attention-Deficit/Hyperactivity Disorder

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Titel: The Internal and External Validity of Sluggish Cognitive Tempo and its Relation with DSM–IV ADHD
Auteurs: Erik G. Willcutt
Nomita Chhabildas
Mikaela Kinnear
John C. DeFries
Richard K. Olson
Daniel R. Leopold
Janice M. Keenan
Bruce F. Pennington
Publicatiedatum: 01-01-2014
Uitgeverij: Springer US
Gepubliceerd in: Research on Child and Adolescent Psychopathology / Uitgave 1/2014
Print ISSN: 2730-7166
Elektronisch ISSN: 2730-7174
DOI: https://doi.org/10.1007/s10802-013-9800-6

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