Daniel Kelly

People can be disgusted by the concrete and by the abstract -- by an object they find physically repellent or by an ideology or value system they find morally abhorrent. Different things will disgust different people, depending on individual sensibilities or cultural backgrounds. In _Yuck!_, Daniel Kelly investigates the character and evolution of disgust, with an emphasis on understanding the role this emotion has come to play in our social and moral lives. Disgust has recently been riding a swell of scholarly attention, especially from those in the cognitive sciences and those in the humanities in the midst of the "affective turn." Kelly proposes a cognitive model that can accommodate what we now know about disgust. He offers a new account of the evolution of disgust that builds on the model and argues that expressions of disgust are part of a sophisticated but largely automatic signaling system that humans use to transmit information about what to avoid in the local environment. He shows that many of the puzzling features of moral repugnance tinged with disgust are by-products of the imperfect fit between a cognitive system that evolved to protect against poisons and parasites and the social and moral issues on which it has been brought to bear. Kelly's account of this emotion provides a powerful argument against invoking disgust in the service of moral justification

We situate Henrich’s book in the larger research tradition of which it is a part and show how he presents a wide array of recent psychological, physiological, and neurological data as supporting the view that two related but distinct processes have shaped human nature and made us unique: cumulative cultural evolution and culture-driven genetic evolution. We briefly sketch out several ways philosophers might fruitfully engage with this view and note some implications it may have for current philosophic debates in moral and political theory and over the nature of extended cognition. We end by noting how Henrich’s view of the source of cultural design and innovation, and the prominence of place he gives to the extended process of cultural evolution, cuts against a cluster of broad but common views about human minds, recasting putative bugs as features and indicating that many of the distinctive features of our individual minds evolved to allow them to be effective cogs in the larger, more productive cultural machine.

We first describe recent empirical research on racial cognition, particularly work on implicit racial biases that suggests they are widespread, that they can coexist with explicitly avowed anti-racist and tolerant attitudes, and that they influence behavior in a variety of subtle but troubling ways. We then consider a cluster of questions that the existence and character of implicit racial biases raise for moral theory. First, is it morally condemnable to harbor an implicit racial bias? Second, ought each of us to suspect ourselves of racial bias, and therefore correct for it in ordinary activity, such as grading student papers?

The view we defend is that in virtue of its nature, disgust is not fit to do any moral or social work whatsoever, and that there are no defensible uses for disgust in legal or political institutions. We first describe our favoured empirical theory of the nature of disgust. Turning from descriptive to normative issues, we address the best arguments in favour of granting disgust the power to justify certain judgements, and to serve as a social tool, respectively. Daniel Kahan advances a pair of theses that suggest disgust is indispensable (Moral Indispensability Thesis), and so has an important part to play in the functioning of a just, well-ordered society (Conservation Thesis). We develop responses and show how they rebut the arguments given in support of each thesis. We conclude that any society free of social disgust would be more just, reasonable and compassionate