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Reaction time assessment in children with ADHD.

UNLABELLED
Attention deficit, impulsivity and hyperactivity are the cardinal features of attention deficit hyperactivity disorder (ADHD) but executive function (EF) disorders, as problems with inhibitory control, working memory and reaction time, besides others EFs, may underlie many of the disturbs associated with the disorder.


OBJECTIVE
To examine the reaction time in a computerized test in children with ADHD and normal controls.


METHOD
Twenty-three boys (aged 9 to 12) with ADHD diagnosis according to Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, 2000 (DSM-IV) criteria clinical, without comorbidities, Intelligence Quotient (IQ) > or = 89, never treated with stimulant and fifteen normal controls, age matched were investigated during performance on a voluntary attention psychophysical test.


RESULTS
Children with ADHD showed reaction time higher than normal controls.


CONCLUSION
A slower reaction time occurred in our patients with ADHD. This findings may be related to problems with the attentional system, that could not maintain an adequate capacity of perceptual input processes and/or in motor output processes, to respond consistently during continuous or repetitive activity.