Peter Railton

Intuition—spontaneous, nondeliberative assessment—has long been indispensable in theoretical and practical philosophy alike. Recent research by psychologists and experimental philosophers has challenged our understanding of the nature and authority of moral intuitions by tracing them to “fast,” “automatic,” “button-pushing” responses of the affective system. This view of the affective system contrasts with a growing body of research in affective neuroscience which suggests that it is instead a flexible learning system that generates and updates a multidimensional evaluative landscape to guide decision and action. With this latter view in mind, I revisit some of the classic hypothetical scenarios used in experimental moral psychology.

Our notion of normativity appears to combine, in a way difficult to understand but seemingly familiar from experience, elements of force and freedom. On the one hand, a normative claim is thought to have a kind of compelling authority; on the other hand, if our respecting it is to be an appropriate species of respect, it must not be coerced, automatic, or trivially guaranteed by definition. Both Hume and Kant, I argue, looked to aesthetic experience as a convincing example exhibiting this marriage of force and freedom, as well as showing how our judgment can come to be properly attuned to the features that constitute value. This image of attunement carries over into their respective accounts of moral judgment. The seemingly radical difference between their moral theories may be traceable not to a different conception of normativity, but to a difference in their empirical psychological theories – a difference we can readily spot in their accounts of aesthetics

David Hume famously criticized rationalist theories of practical reason, arguing that reason alone is incapable of yielding action, and that some passionate element must be supplied. Contemporary theories of Humean inspiration develop a causal-explanatory model of action in terms of the joint operation of two distinct mental states: beliefs and desires, one inert and representational, the other dynamic. Such neo-Humean theories claim that since desires, unlike beliefs, are not subject to direct rational evaluation, an act can be said to be rational only in the sense that it is instrumental to realizing the agent’s desires. The historical Hume appears to have embraced a “sceptical solution” involving a more dynamic conception of belief, while admitting a default sense in which both beliefs and actions can be deemed reasonable or unreasonable.

Although the ‘naturalistic fallacy’ and the is/ought distinction have often been invoked as definitive grounds for rejecting any attempt to bring evolutionary thought to bear on ethics, they are better interpreted as warnings than as absolute barriers. Our moral concepts themselves -- e.g. the principle that ‘ought implies can’ -- require us to ask whether human psychology is capable of impartial empathetic thought and motivation characteristic of normative systems that could count as moral. As the essay by Flack and de Waal shows, evolutionary theory and evidence can help us answer the question whether the psychological ‘building blocks’ needed for morality are indeed likely to be present in a given species, including Homo sapiens. It is important, however, not to think that a positive answer to this question commits us to attributing identifiable moral concepts to actual members

An adequate theory of the nature of belief should help us explain the most obvious features of belief as we find it. Among these features are: guiding action and reasoning non-inferentially; varying in strength in ways that are spontaneously experience-sensitive; ‘aiming at truth’ in some sense and being evaluable in terms of correctness and warrant; possessing inertia across time and constancy across contexts; sustaining expectations in a manner mediated by propositional content; shaping the formation and execution of plans; generalizing spontaneously projectively; and being independent of the will and resisting instrumentalization. Using the method of ‘creature construction’, I attempt to show how we can build an attitude with these features step-by-step from simpler components, thereby avoiding the problems of regress or circularity affecting a number of influential accounts of belief.