Susan Jane Dwyer

At the end of Section III of “Freedom and Resentment,” just after he has drawn our attention to the reactive attitudes, P. F. Strawson remarks, “The object of these commonplaces is to try to keep before our minds something it is easy to forget when we are engaged in philosophy, especially in our cool, contemporary style, viz., what it is actually like to be involved in ordinary inter-personal relationships, ranging from the most intimate to the most casual.” It is striking, then, that the proponent of so thoroughly naturalistic an account of moral responsibility seems himself largely to ignore the fact that moral agents do not spring into existence ab initio. The adult moral agent, who is the central character of normative theory and of accounts of moral responsibility, was once a child. Our juvenile selves get a mention in Strawson’s paper, but only as examples of creatures who are paradigmatically not responsible or who inhabit “a borderline, penumbral area ” with respect to responsibility. Thus it remains a mystery, on Strawson’s account, how we become the morally responsible creatures he takes us to be.

Morality is so steeped in the quotidian details of praise and blame, of do’s and don’t’s, and of questions about the justifiability of certain practices it is no wonder that philosophers and psychologists have devoted relatively little effort to investigating what makes moral life possible in the first place. In making this claim, I neither ignore Kant and his intellectual descendants, nor the large literature in developmental moral psychology from Piaget on. My charge has to do with this fact: morality is an ineliminable feature of human life and human beings are biological creatures. Hence, what wants explaining is how a biological creature – a creature with an evolved mind/brain – can be a normative creature of a particular kind – a creature that cannot help but engage in moral appraisal and evaluation. It does no good to try to wring such an explanation from the ‘very concept’ of agency, as some philosophers attempt to do. Such a strategy merely delays the inevitable: how is it that biological creatures are agents? And while we can understand the practical value of charting the trajectory of babbling infants to toddlers to adolescents to adults, absent an account of the foundations of the capacities whose emergence constitutes this trajectory, we will still not have addressed the central question. Sociobiology and evolutionary ethics fare no better. The apparent puzzle of cooperation amidst competition can and has been addressed via the notions of kin selection and reciprocal altruism. But these accounts are motivated by and hence pitched at the level of overt behavior. However, being a moral creature, in the sense that makes such entities apt subjects for deep intellectual investigation, has very little to do with whether they behave well and everything to do with being capable of a certain kind of cognition.

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.