It is shown that preparatory processing produced by advance partially informative cueing in reaction time (RT) tasks which employ verbal stimuli can be viewed as rehearsal in short-term-memory tasks. Experiment I showed that the advance-cueing RT procedure produces decreased mean RT to cued stimuli and increased mean RT to noncued stimuli, suggesting that the cues evoke enhanced preparatory processing of cued stimuli and attenuated preparatory processing of noncued stimuli.Experiment II demonstrated that enhanced preparatory processing, like rehearsal, facilitates short-term recall and that attenuated preparatory processing, like attenuation of rehearsal by interpolated activity, impairs recall. The implications of the findings for the necessary and sufficient conditions for rehearsal, the selectivity of rehearsal, and the relationship of rehearsal to the accessibility of information in longterm memory are discussed.