Intra-individual variability in behavior and functioning is ubiquitous among children with
attention-deficit/hyperactivity disorder (ADHD), but it has not been systematically examined …

BACKGROUND: Increased intra-subject response time standard deviations (RT-SD)
discriminate children with attention-deficit/hyperactivity disorder (ADHD) from healthy control …

One of the most consistent findings in children with ADHD is increased moment-to-moment
variability in reaction time (RT). The source of increased RT variability can be examined …

Intraindividual variability (IIV)–reflecting short-term (within-session), within-person
fluctuations in behavioral performance–and, specifically, reaction time (RT) variability, is …

The potential for response variability to serve as an endophenotype for attention deficit
hyperactivity disorders (ADHD) rests, in part, upon the development of reliable and valid …

Individuals with ADHD are characterized as ubiquitously slower and more variable than their
unaffected peers, and increased reaction time (RT) variability is considered by many to …

Response time (RT) variability is a common finding in ADHD research. RT variability may
reflect frontal cortex function and may be related to deficits in sustained attention. The …

Abstract [Correction Notice: An Erratum for this article was reported in Vol 27 (1) of
Neuropsychology (see record 2012-35222-001). In the article, the URL for the supplemental …

This study examined the effects of methylphenidate (MPH) on reaction time (RT) variability in
children with attention deficit hyperactivity disorder (ADHD). Using a broad battery of …

Objective Attention deficit disorder (ADHD) is commonly associated with inhibitory
dysfunction contributing to typical behavioral symptoms like impulsivity or hyperactivity …