 A number of philosophical theories of experience have emerged as responses to the Problem of Perception, or in relation to such responses. Here we consider the sense-datum theory  (§3.1),  adverbialism  (§3.2),  intentionalism  (§3.3),  and naive realist disjunctivism  (§3.4).  In this exposition we do not consider much the possibility of hybrid views. The way these positions relate to the Problem of Perception is mapped most clearly in Martin (1995, 1998, 2000).