For the past decade, intra-individual variability in reaction times on computerized tasks has
become a central focus of cognitive research on Attention-Deficit/Hyperactivity Disorder …

Increased intraindividual variability (IIV), reflecting within-person fluctuations in behavioral
performance, is commonly observed in aging as well as in select disorders including …

Cognitive development is known to involve improvements in accuracy, capacity, and
processing speed. Less is known about the role of performance consistency, and there has …

Objective: Segmented brain white matter hyperintensities were compared between subjects
with late-life depression and age-matched subjects with similar vascular risk factor scores …

Objectives: Intraindividual variability (IIV) in reaction time refers to the trial-to-trial fluctuations
in responding across a given cognitive task. Cross-sectional research suggests that IIV …

Increased performance variability has been demonstrated in several groups and conditions,
including aging and cognitive decline. Structural brain characteristics underlying this …

Objective: The characteristics of response time (RT) distributions beyond measures of
central tendency were explored in 3 attention tasks across groups of young adults, healthy …

Aging and early-stage Alzheimer disease (AD) have been shown to be associated with
increased RT intraindividual variability (IIV, as reflected by the coefficient of variation) and an …

This study explored differences in intraindividual variability in 3 attention tasks across a
large sample of healthy older adults and individuals with very mild dementia of the …

Intraindividual variability (IIV) reflects within-person changes in performance, such as trial-by-
trial fluctuations on a reaction-time (RT) task. The neural underpinnings of IIV remain largely …