Theory of mind (ToM) is the intuitive understanding of one's own and other people's minds or mental states— including thoughts, beliefs, perceptions, knowledge, intentions, desires, and emotions—and of how those mental states influence behavior. Sometimes called intuitive psychology, folk psychology, or even mind-reading, ToM is an innate human ability. The understanding that others have mental states different from one's own makes it possible to infer what others are thinking and to predict their behavior. This ability to recognize one's own state of mind and those of others is central to human consciousness. The study of ToM and identification of the skills comprising ToM is a rapidly changing the field of developmental psychology.