Mack, HollyChristensen, HelenLi, Shu-ChenMeslin, ChantalMaller, JeromeKumar, RajeevDear, KeithEasteal, SimonSachdev, Perminder SinghAnstey, Kaarin2015-12-080028-3932http://hdl.handle.net/1885/30344Intra-individual variability in reaction time increases with age and with neurological disorders, but the neural correlates of this increased variability remain uncertain. We hypothesized that both faster mean reaction time (RT) and less intra-individualKeywords: adult; age; apoe gene; article; brain region; brain size; cognitive defect; controlled study; corpus callosum; disease severity; female; gene; genotype; human; major clinical study; male; neurologic disease; nucleotide sequence; reaction time; Adult; Age APOE; Cognitive aging; Mild cognitive impairment; Processing speed; RT variability; Sex differences200710.1016/j.neuropsychologia.2006.11.0202015-12-08