What is Mental Fictionalism?

This chapter introduces several versions of mental fictionalism, along with the main lines of objection and reply. It begins by considering the debate between eliminative materialism (“eliminativism”) versus realism about mental states as conceived in “folk psychology” (i.e., beliefs, desires, intentions, etc.). Mental fictionalism offers a way to transcend the debate by allowing talk of mental states without a commitment to realism. The idea is to treat folk psychology as a “story” and three different elaborations of this are reviewed. First, prefix semantics paraphrases a sentence like ‘Biden believes that Trump lost’ as ‘According to folk psychology, Biden believes that Trump lost’, whereby ontological commitment to belief is avoided. Similarly, pretense theory suggests that we do not assert ‘Biden believes that Trump lost’, but only pretend to assert it. Third, affective theory proposes that such discourse is used in a metaphorical way to understand a person’s affective and dispositional states vis-a-vis the community. The main objections concern whether folk psychology has the features of storytelling, and whether mental fictionalism ends up being self-refuting. The chapter also recaps a less discussed fictionalist view about “qualia” or phenomenal states, and closes by summarizing the papers contained in the volume.