BACKGROUND: This study is based on a comprehensive survey of the neuropsychological
attention-deficit hyperactivity disorder (ADHD) literature and presents the first psychometric …

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 …

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

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

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

Objective: Slow and variable reaction times (RTs) on fast tasks are such a prominent feature
of attention-deficit/hyperactivity disorder (ADHD) that any theory must account for them …

Neuropsychologists often diagnose cerebral dysfunction based, in part, on marked variation
in an individual's cognitive test performance. However, little is known about what constitutes …

Intra-individual variability on a computer-based working memory task was examined among
25 children/adolescents with ADHD and 24 typically developing peers. Participants …

Abstract Attention Deficit/Hyperactivity Disorder (ADHD) in childhood is associated with
impaired functioning in multiple cognitive domains: executive functioning (EF), reward and …

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