Philosophical discussions regarding the status of emotion as a scientific domain usually get framed in terms of the question whether emotion is a natural kind. That approach to the issues is wrongheaded for two reasons. First, it has led to an intractable philosophical impasse that ultimately misconstrues the character of the relevant debate in emotion science. Second, and most important, it entirely ignores valence, a central feature of emotion experience, and probably the most promising criterion for demarcating emotion from cognition and other related domains. An alternate philosophical hypothesis for addressing the issues is pro- posed. It is that emotion is a naturally occurring valenced phenomenon that is..