Do the operations of the human mind have something to teach us about the fundamental structure of reality? Philosophers such as Hume, Kant, James, Bergson, Husserl, Kuhn, and Goodman have, in different ways, seemed to believe this question should be answered in the affirmative. Yet as disciplines, cognitive science and metaphysics are usually conducted without reference to one another.

“Psycho-ontology” can be defined as the investigation of the relationship between human cognition and features of reality: We do psycho-ontology when we study the way perception, thought, and emotion play a role in helping constitute the world we inhabit. But psycho-ontology can also move in the opposite direction: It can involve studying the fundamental features of reality in order to gain insight into how human cognitive processes work.