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J Atten Disord. 2009 Jul;13(1):36-41. doi: 10.1177/1087054708320439. Epub 2009 Apr 22.

Inattentive symptoms of ADHD are related to evening orientation.

Author information

  • 1Universit√© Nice Sophia Antipolis, Nice--Cedex 3, France. caci.h@chu-nice.fr

Abstract

OBJECTIVE:

Morningness is a stable characteristic of individuals, related to impulsivity and novelty seeking. The evening orientation is a risk factor for psychiatric conditions such as depression and personality disorders. The authors hypothesized that adults suspected of having ADHD are more evening oriented than adults without ADHD.

METHOD:

Exploratory factor analyses were performed on the polychoric correlation matrices of the full Adult Self-Report Scale for ADHD (ASRS) and the Composite Scale of Morningness (CSM).

RESULTS:

As expected, two factors for the ASRS--Inattention and Impulsivity- Hyperactivity--and three factors for the CSM were retrieved. All three CSM factors correlated negatively with ASRS Inattention, none with ASRS Impulsivity-Hyperactivity.

CONCLUSION:

Inattention is more strongly related to eveningness than is Impulsivity-Hyperactivity, and therefore eveningness may constitute an endophenotype of the predominantly inattentive subtype of ADHD. These findings need to be replicated in a patient population with a standardized assessment of sleep quality.

PMID:
19387003
[PubMed - indexed for MEDLINE]
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