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Published in: BMC Psychiatry 1/2012

Open Access 01-12-2012 | Research article

Hyperactivity persists in male and female adults with ADHD and remains a highly discriminative feature of the disorder: a case-control study

Authors: Martin H Teicher, Ann Polcari, Nikolaos Fourligas, Gordana Vitaliano, Carryl P Navalta

Published in: BMC Psychiatry | Issue 1/2012

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Abstract

Background

Symptoms of hyperactivity are believed to fade with age leaving ADHD adults mostly inattentive and impulsive. Our aim was to test this assertion using objective measures of hyperactivity, impulsivity and inattention.

Method

Participants were 40 subjects with ADHD (23M/17F; 35±10 yrs) and 60 healthy adults (28M/32F; 29±9 yrs) blindly assessed using Wender-Reimherr interview ratings, Structured Clinical Interview for DSM-IV Disorders and DSM-IV criteria. Infrared motion capture systems tracked head and leg movements during performance of a No-4’s cognitive control task. Subjects also completed the Conners’ CPT-II.

Results

ADHD and controls differed significantly in activity and attention. Effect sizes for activity measures (d’ = 0.7–1.6) were, on average, two-fold larger than differences in attention or impulsivity, correlated more strongly with executive function ratings and were more discriminatory (ROC area = 0.83 for activity composite, 0.65 for No-4’s distraction composite, 0.63 for Conners’ CPT-II confidence index, 0.96 for the combined activity and attention diagnostic index). This finding was true for subjects with the predominantly inattentive subtype as well as subjects with combined or predominantly hyperactive/impulsive subtype. Males and females with ADHD were equally active. The superior accuracy of activity measures was confirmed using Random Forest and predictive modeling techniques.

Conclusions

Objectively measured hyperactivity persists in adults with ADHD and is a more discriminative feature of the disorder than computerized measures of inattention or impulsivity. This finding supports the hypothesis that a deficient ability to sit still remains a defining feature of the disorder in adults when it is measured objectively.
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Metadata
Title
Hyperactivity persists in male and female adults with ADHD and remains a highly discriminative feature of the disorder: a case-control study
Authors
Martin H Teicher
Ann Polcari
Nikolaos Fourligas
Gordana Vitaliano
Carryl P Navalta
Publication date
01-12-2012
Publisher
BioMed Central
Published in
BMC Psychiatry / Issue 1/2012
Electronic ISSN: 1471-244X
DOI
https://doi.org/10.1186/1471-244X-12-190

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