Abstract

What are the distinctive psychological features that explain why humans are free, but many other creatures, such as simple animals, are not? It is natural to think that the answer has something to do with unique human capacities for decision-making. Philosophical discussions of how decision-making works, however, are tellingly incomplete. In particular, these discussions invariably presuppose an agent who has a mentally represented set of options already fully in hand. The emphasis is largely on the selective processes that identify the options most worth doing and then execute them. But where do mentally represented sets of options come from in the first place? Once we focus on this constructive aspect of decision-making, an important fact becomes apparent: While the option sets of simpler animals are sharply limited, humans have a number of striking psychological powers—including remarkable powers of prospection and creativity—that enable them to construct option sets of unparalleled size and diversity. As a result, humans can express themselves in countless ways. This latitude for self-expression is, I argue, the distinctive feature that explains why humans are free.