How To Think About the Functions of Consciousness

Abstract

A foundational issue for the science and philosophy of consciousness concerns the function(s) of consciousness—what consciousness does for any particular aspect of psychological or neural processing. In spite of progress in consciousness science, false assumptions and a lack of clarity regarding how best to approach the functions of consciousness represent an ongoing and serious roadblock to progress. Misguided approaches to the function(s) of consciousness have the potential to mangle explanatory priorities, and divert attention, effort, and funding away from useful questions and experimental paradigms. In this paper we offer a way forward: the capacity-based approach to the function(s) of consciousness. This approach flows out of a general explanatory approach that is influential in the philosophy of science and psychology (but not consciousness studies), according to which the mind is understood in terms of a structured collection of capacities. And capacities are explained by empirically discovered facts that identify functions (causal roles) played by empirically identified parts of a system. After elucidating this capacity-based approach to the mind, we show how consciousness fits within it. We then argue that this approach avoids problems that plague theory-based approaches to identifying the function(s) of consciousness, avoids mistakes endemic to the common strategy of looking for the function(s) of consciousness by asking what consciousness is necessary for, and re-orients explanatory priorities in a way that better focuses consciousness science, and that suggests fruitful avenues for experimentation.