The present study examined the relationship between two measures of sustain
ed attention on thr Continuous Performance Test (reaction time and omission
errors) and several performance measures on neuropsychological tests. Anal
ysis suggests thin sustained attention as measured by processing speed pred
icts performance on neuropsychological measures of relatively greater compl
exity and that the Stroop test, which requires maintaining steady focus on
a changing stimulus field, may be more sensitive to lapses in attention tha
n other neuropsychological rats.