tic information from unperceived stimuli were strongly pressed in the second half of the 20th century (3), methodological critiques (4) of the adequacy of evidence for such claims resulted in widespread skepticism about those claims. In this controversial domain, experimental work of the past two decades has focused on claimed findings of stlbliminal semantic activation (5)--the claim that word meanings are analyzed when words are presented so as to evade conscious percep- tion. Subliminal semantic activation is most often investigated with priming procedures. Subjects perform a two-choice categorization task that is supplemented by the presentation of a subliminal prime word shortly before each to-be-judged target stimulus word. The two categorization tasks that have been used most often for tests of subliminal priming have the subject decide whether or not a target letter string forms a word (6) or whether a target word is pleasant or unpleasant in meaning (7). Priming is said to