Cognitive abilities, including general intelligence and domain-specific abilities such as fluid
reasoning, comprehension knowledge, working memory capacity, and processing speed …

Early cross-sectional studies suggested that cognitive functions begin to decline in young
adulthood, whereas the first longitudinal studies suggested that they are mainly stable in …

When Binet and Simon (1905, p. 197) defined intelligence as the ability to judge well,
understand well, and think well, they assumed—along with many other researchers …

This study examined five aspects of change (or stability) in cognitive abilities in middle
adulthood across a 12-year period. Data come from the Interdisciplinary Study on Adult …

We analyzed data on psychometric intelligence from the Seattle Longitudinal Study,
simultaneously estimating longitudinal factors, their covariance structure, and their mean …

Claims of changes in the validity coefficients associated with general mental ability (GMA)
tests due to the passage of time (ie, temporal validity degradation) have been the focus of an …

We address two questions of central interest in adult intellectual development: the
equivalence of psychometric tests' measurement properties at different ages, and the …

This project studied the intercorrelations and long-term stabilities of standard Wechsler Adult
Intelligence Scale—Revised (WAIS—R), Wechsler Memory Scale—Revised (WMS—R), and …

Le test révisé" M", une mesure de l'intelligence, a été administré de nouveau à 260 hommes
après qu'ils eussent passé ce même test en tant que recrues de l'armée pendant la seconde …

Aim Longitudinal studies that have examined cognitive performance in children with
intellectual disability more than twice over the course of their development are scarce. We …