Abstract
When staring at a blank grid, one can readily see simple shapes-a peculiar experience that does not occur when viewing an empty background. But just what does this seeing entail? Previous work has explored many cues to object-based attention (e.g., involving continuity and closure), but here we asked whether attention can be object based even when there are no cues to objecthood. Observers viewed simple grids and attended to particular squares until they could effectively see shapes such as a capital H or I. During this scaffolded attention, two probes appeared, and observers reported whether they were the same or different. Remarkably, this produced a traditional same-object advantage: In several experiments (including high-powered direct replications), performance was enhanced for probes presented on the same (purely imagined) object, compared with equidistant probes presented on different objects. We conclude that attention not only operates over objects but also can effectively create object representations.
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