 Like Hill, Prinz (2004) argues that introspection must involve multiple mechanisms, depending both on the target states (e.g., attitudes vs. perceptual experiences) and the particular mode of access to those states. Access might involve controlled attention or it might be more of a passive noticing; it might involve the verbal “captioning” or labeling of experiences or it might involve the kind of non-verbal access that even monkeys have to their mental states. Prinz (2007) sharply distinguishes between the conceptual classification of our conscious experiences into various types that can be recognized and re-identified over time—classifications which he thinks must necessarily be somewhat crude—and non-conceptual knowledge of ongoing conscious experiences attained by “pointing” at them with attention. The latter type of knowledge, Prinz argues, is much more detailed and finely structured than the former but cannot be expressed or retained over time. Prinz also follows Hill in emphasizing that introspection often intensifies or otherwise modifies the target experience. In such cases, Prinz argues, introspective “access” is only access in an attenuated sense.