Cognitive phenomenology can be defined as the experience that is associated with cognitive activities, such as thinking, reasoning, and understanding. What is at issue in contemporary debates is not the existence of cognitive phenomenology, so defined, but rather its nature and theoretical significance. Debated questions about the nature of cognitive phenomenology include the following: What is the relationship between the phenomenology of cognition and the intentionality of cognition? And what is the relationship between the phenomenology of cognition and the phenomenology of perception? Debated questions about the significance of cognitive phenomenology concern its role in theories of intentionality, introspective self-knowledge, and knowledge of the external world.