Adrienne Prettyman

This article defends a theory of diffuse attention and distinguishes it from focal attention. My view is motivated by evidence from psychology and neuroscience, which suggests that we can deploy visual selective attention in at least two ways: by focusing on a small number of items, or by diffusing attention over a group of items taken as a whole. I argue that diffuse attention is selective and can be object‐based. It enables a subject to select an object to guide behavior, albeit in a different way than focusing does.

In cases of identity crowding, a subject consciously sees items in a figure, even though they are presented too closely together for her to shift attention to each item. Block uses such cases to challenge the view that attention is necessary for consciousness. I argue that in identity crowding cases, subjects really do attend to the items. Specifically, they attend to the figure as a global object that contains the individual items as parts. To support this view, I provide evidence that attention can be directed to a global object or a local object. My response helps to defend the view that attention is necessary for conscious perception.

Attention seems to raise a problem for pure representationalism, the view that phenomenal content supervenes on representational content. The problem is that shifts of attention sometimes seem to bring about a change in phenomenal content without a change in representational content. I argue that the representationalist can meet this challenge, but that doing so requires a new view of the representational content of perception. On this new view, the representational content of perception is always relative to a way of attending. I call this the attention-indexed view of perceptual content.