Inhibition of return (IOR) occurs when a target is preceded by an irrelevant stimulus (cue) at the same location: Target detection is slowed, relative to uncued locations. In the present study, we used relatively complex displays to examine the effect of repetition of nonspatial attributes. For both color and shape, attribute repetition produced a…

Under tachistoscopic viewing conditions, letters are better reported if they are presented as part of a word. Poor performance on the single letter words I and A appears to be a manifestation of a more general length effect; recognition of briefly presented words improves with increasing length (up to three or four letters). (Author/LC)