This study examines the role of componential knowledge and unitization proc
esses in implicit memory. In two experiments, subjects studied novel words
formed out of morphemes, syllables, or pseudosyllables. They then completed
an implicit task requiring a judgment as to which of two items (one old, o
ne new) was a better English word. Experiment I replicated previous results
showing priming for nonwords formed out of morphemes and syllables but not
pseudosyllables. This effect was present when orthographic factors were co
ntrolled and, unlike explicit (recognition) memory, was equally strong foll
owing visual and semantic processing. Experiment 2 showed that little primi
ng was present across a variety of conditions in which the connections betw
een components were altered across study and test. Results are interpreted
as evidence for the role of perceptually based activation and integration p
rocesses in implicit memory for novel stimuli.