  The term sensibility theory was coined to refer to a collection of similar views put forward most notably by John McDowell (1985, 1987, 1996) and David Wiggins (1976, 1987), which claim values to be anthropocentric and use perceptual metaphors to describe evaluative thought and experience (Darwall, Gibbard, and Railton 1992). According to this view, value properties cannot be reduced to natural properties in a way that supports useful generalizations or explanations. Rather, as Wiggins (1987: 193) puts it: “Our subjective reactions to objects or events will often impose groupings upon them that have no purely naturalistic rationale.” Sensibility theory therefore adopts the response dependency thesis quite broadly, holding it of all values.