Conditioned effects of caffeine on performance in humans.

  title={Conditioned effects of caffeine on performance in humans.},
  author={Angela S Attwood and Philip M. Terry and Suzanne Higgs},
  journal={Physiology & behavior},
  volume={99 3},
There is limited evidence for the conditioning of stimulant-like drug effects to previously-neutral stimuli in humans. Two studies tested whether the facilitatory effects of caffeine on cognitive performance can be conditioned to the context of drug administration. In Experiment 1, sixteen participants were divided equally into two groups: one group (the "paired" group) received 250 mg caffeine in a novel beverage prior to completing two computerized performance tests; the other group (the… CONTINUE READING