Processing fluency caused by prior encoding of a word is shown to incr
ease duration judgments about that word and to decrease brightness con
trast judgments about its mask when the word is presented in a masked
word identification task. These effects occurred following an encoding
task that involved visual perception of the words treading aloud) and
a task that provided no direct visual experience (generation from a s
emantic cue). Analysis of judgments conditionalized on correct or fail
ed identification of target words indicated that judgments were powerf
ully affected by successful identification. Subjective estimates of th
e proportion of targets that were previously studied suggested that aw
areness of prior occurrence followed as an attribution based on fluent
word identification, rather than acting as a causal agent for identif
ication or altered perceptual judgments. We conclude that prior percep
tual and conceptual encoding episodes can contribute to fluent process
ing of target words on a subsequent masked word identification task an
d that, regardless of its source, this fluency is experienced in a gen
eric form that is susceptible to attribution to various causes, includ
ing prior experience (creating a sense of recollection) and current st
imulus conditions. (C) 1998 Elsevier Science B.V. All rights reserved.