Susan Jane Dwyer

In chapter one I consider two arguments for the claim that we ought to attribute linguistic knowledge to speakers of a natural language. The a priori argument has it that a theory of understanding reveals what it is that speakers of a language know about their language. The second argument takes the form of an inference to the best explanation, emphasising the idea that speaking and understanding a language is a rational activity carried on by agents with intention and purpose. Linguistic knowledge is attributed to speakers as a way of making such a practice intelligible. ;In chapter two, I examine the several sceptical worries and substantive objections that have been raised to the idea of linguistic knowledge. None of these objections is fatal; rather they direct our attention to the need to specify what kind of knowledge linguistic knowledge is. ;In chapter three I argue that we do best to think of the notion of implicit linguistic knowledge as a "place-holder". ;In chapter four, I turn to a discussion of implicit belief, drawing a distinction between the way in which the content of a belief might be represented in an agent's brain and the kind of access she has to that content. I argue against an account of implicit belief that is motivated by concerns about representation, and for one that focuses on the kind of access an agent has to her implicit beliefs. ;In chapter five I attempt to sketch an account of implicit linguistic knowledge that fulfills its explanatory agenda while avoiding the objections discussed in earlier chapters. A speaker's implicit linguistic knowledge, understood as a set of articulated psychological states, grounds her full-blooded linguistic dispositions. This analysis of implicit linguistic knowledge is not subject to standard objections to that notion. Furthermore, it provides a "non-reductive" explanation of a speaker's language mastery, since it holds a middle ground between strictly biological, or neurophysiological accounts and purely behavioristic accounts of what makes an agent a speaker of a language. ;Finally, I take up the question of whether Dummett can accept my account of implicit linguistic knowledge.

A nativist moral psychology, modeled on the successes of theoretical linguistics, provides the best framework for explaining the acquisition of moral capacities and the diversity of moral judgment across the species. After a brief presentation of a poverty of the moral stimulus argument, this chapter sketches a view according to which a so-called Universal Moral Grammar provides a set of parameterizable principles whose specific values are set by the child's environment, resulting in the acquisition of a moral idiolect. The principles and parameters approach predicts moral diversity, but does not entail moral relativism.

The manifest dissociation between our capacity to make moral judgments and our ability to provide justifications for them, a phenomenon labeled Moral Dumbfounding, has important implications for the theory and practice of moral psychology. I articulate and develop the Linguistic Analogy as a robust alternative to existing sentimentalist models of moral judgment inspired by this phenomenon. The Linguistic Analogy motivates a crucial distinction between moral acceptability and moral permissibility judgments, and thereby calls into question prevailing methods used in the study of moral judgment. Indeed, the judgments that are the focus of most current empirical work in moral psychology are not proper targets of scientific study.

Depending on how one looks at it, we have been enjoying or suffering a significant empirical turn in moral psychology during this first decade of the 21st century. While philosophers have, from time to time, considered empirical matters with respect to morality, those who took an interest in actual (rather than ideal) moral agents were primarily concerned with whether particular moral theories were ‘too demanding’ for creatures like us (Flanagan, 1991; Williams, 1976; Wolf, 1982). Faithful adherence to Utilitarianism or Kantianism would appear to be inconsistent with other things we value, like personal integrity and flourishing, which depend upon pursuing individually determined projects and ways of life in rather single-minded ways. Maximizing the good is a full-time job, and the impartiality recommended by Kantian theory can get in the way of showing special care for those we know and love. All this is standard philosophical fare. However, more recently, philosophers and psychologists have begun to treat moral psychology as a legitimate branch of cognitive science. They inquire into the evolution of morality (e.g., Joyce, 2007; Nichols 2004), debate the human uniqueness of moral capacities (e.g., deWaal, 2006; Hauser, 2006), investigate the causal etiology of moral judgments (e.g., Haidt & Greene, 2002; Hauser et al., 2006; Prinz, 2006), attempt to map the neuroanatomy of moral reasoning (e.g., Greene et al., 2001; Greene et al., 2004; Moll, et al., 2005), and consider what other affective and cognitive capacities are required by a creature who sees the world in moral terms. (See also Sinnott-Armstrong, 2007, 2008a, 2008b). 1 In this essay, I discuss two issues whose interdependence and central importance for empirically informed moral psychology have not been fully grasped, or so I believe. First is what I call the Explananda Challenge. Let us assume that the primary question for moral psychology is this: How is it possible for human beings to be moral creatures? Deceptively simple, this question obscures a number of rather more difficult ones..

We must admire the ambition of Prinz’s title question. But does he provide a convincing answer to it? Prinz’s own view of morality as “a byproduct – accidental or invented – of faculties that evolved for different purposes (1),” which appears to express a negative reply, does not receive much direct argument here. Rather, Prinz’s main aim is to try to show that the considerations he believes are typically presented by moral nativists are insufficient or inadequate to establish that morality is innate. He discusses, individually, how much evidential weight the (alleged) existence of (1) universal moral norms, (2) universal moral domains, (3) fixed stages in moral development, and (4) precursors to morality among non-human animals lend to nativist claims, and, in addition, he argues that poverty-of-the-moral-stimulus arguments are as yet unconvincing. “[C]urrent evidence,” Prinz claims, “is consistent with the conclusion that children acquire moral competence through experience (22).” It is not my intention here to follow Prinz’s piecemeal criticisms of moral nativism. In their attacks on linguistic nativism (see, e.g., Cowie 1999) and now on moral nativism, empiricists typically deploy the..