Just the imagination: Why imagining doesn't behave like believing

According to recent accounts of the imagination, mental mechanisms that can take input from both imagining and from believing will process imagination-based inputs (pretense representations) and isomorphic beliefs in much the same way. That is, such a mechanism should produce similar outputs whether its input is the belief that p or the pretense representation that p. Unfortunately, there seem to be clear counter-examples to this hypothesis, for in many cases, imagining that p and believing that p have quite different psychological consequences. This paper sets out some central problem cases and argues that the cases might be accommodated by adverting to the role of desires concerning real and imaginary situations.