Some research on the stimulant effect of caffeine suggests that the amount of behavioral enhancement produced by caffeine may depend on subjects' prior experience with the task and the drug. A study was undertaken to test whether prior experience with a task while under the influence of caffeine would facilitate performance of that task. Male…

Electrical brain activity (EEG) was recorded while 13 male and 11 female college students performed a series of recognition and memory tasks. The subjects were right-handed and between 21 and 42 years old. The selected tasks varied in cognitive load from simple recognition of a word flashed on a computer screen to relatively complex serial and…