Rocco J. Gennaro

“Leibniz on Consciousness and Self‐Consciousness” It is argued that Leibniz held a version of the so‐called “higher‐order thought” theory of consciousness. According to this theory, what makes a mental state conscious is that it is accompanied by a thought that one is in that state. For example, in elaborating on his theory of monads, Leibniz explains that an unconscious perception becomes conscious when it is accompanied by an apperception of it. Apperception is best understood as a form of self‐consciousness, and reflection is best understood as a sophisticated form of apperception. With these crucial terminological distinctions in place, it is then argued that treating Leibniz as a HOT theorist can help us understand how he did indeed hold that animals apperceive even if most of them are incapable of sophisticated forms of reflection and rationality.

Questions on the nature of concepts in philosophy, psychology, and cognitive science, such as ‘What are concepts?’ and ‘What is it to possess a concept?’ are notoriously difficult to answer. For example, are concepts abstract mind-independent objects in some Platonic or Fregean sense, or are they better understood as mental representations, such as constituents of thoughts? A common view in cognitive science is that thought is based on word-like mental representations; some say that possessing a concept C involves demonstrating some kind of ability with respect to C’s. But which ability? Other longstanding issues concern a proper theory of the structure of concepts. These questions are tackled here by Simon Baron-Cohen, Peter Carruthers, and a distinguished cast of scientists and philosophers.

Higher-Order (HO) theories of consciousness have in common the idea that what makes a mental state conscious is that it is the object of some kind of higher-order representation. This volume presents fourteen previously unpublished essays both defending and criticizing this approach to the problem of consciousness. It is the first anthology devoted entirely to HO theories of consciousness. There are several kinds of HO theory, such as the HOT (higher-order thought) and HOP (higher-order perception) models, and each is discussed and debated. Part One contains essays by authors who defend some form of HO theory. Part Two includes papers by those who are critics of the HO approach. Some of the topics covered include animal consciousness, misrepresentation, the nature of pain, subvocal speech, subliminal perception, blindsight, the nature of emotion, the difference between perception and thought, first-order versus higher-order theories of consciousness, and the relationship between nonconscious and conscious mentality. (Series A)