Are there objective moral truths, i.e. things that are morally right, wrong, good, or bad independently of what anybody thinks about them? To answer this question more and more scholars have recently turned to evidence from psychology, neuroscience, cultural anthropology, and evolutionary biology. This book investigates this novel scientific approach in a comprehensive, empirically-focused, and partly meta-theoretical way. It suggests that while it is possible for the empirical sciences to contribute to the moral realism/anti-realism debate, most arguments that have so (...) far been proposed fail (because they misrepresent, cherry-pick, or overlook the invalidity of (parts of) the available scientific evidence). The book’s main chapters address five prominent science-based arguments for or against the existence of objective moral truths: the argument from moral disagreement, the evolutionary debunking argument, the sentimentalist argument, the presumptive argument, and the projectivist argument. Thomas Pölzler investigates in which sense the underlying empirical hypotheses would have to be true in order for these arguments to work, and then shows how the available scientific evidence fails to support them. Finally, he makes suggestions as to how to test these hypotheses in a more valid way. Moral Reality and the Empirical Sciences is an important contribution to the moral realism/anti-realism debate that will appeal to philosophers and scientists interested in moral psychology and metaethics. (shrink)

Are there things that are objectively right, wrong, good, bad, etc.: moral properties that are had independently of what we ourselves, our culture, God or any other subjects think about them? Philosophers have traditionally addressed this question from the “armchair.” In recent years, however, more and more participants of the debate have begun to appeal to evidence from science as well. This thesis examines such novel approaches. In particular, it asks what the empirical sciences can contribute to the moral realism/anti-realism (...) debate. My first aim is to show that it is possible for scientific evidence to bear on the question of the existence of objective moral properties. To see whether such contributions are also likely, I will then consider various prominent particular realist and anti-realist arguments: arguments based on hypotheses about ordinary people’s moral experience, the prevalence and persistence of moral disagreement, the evolution of morality, the relation of moral judgements to emotions, and the projection of values. If true, some of these empirical hypotheses would have metaethical implications. The problem with the arguments is, however, that the available scientific evidence does not support, or even contradicts these hypotheses. Only in ways other than have been suggested so far does the evidence considered in this thesis allow for a substantial metaethical conclusion. Finally, I will show that the relation between the empirical sciences and the question of the reality of moral values is actually much closer than commonly assumed. Not only do scientific hypotheses bear on metaethics, metaethical issues bear on the investigation of scientific hypotheses about morality as well. In order to further increase our understanding of what morality is, philosophers and scientists should therefore join forces and work together more closely than they have done so far. (shrink)

Rationalists about the psychology of moral judgment argue that moral cognition has a rational foundation. Recent challenges to this account, based on findings in the empirical psychology of moral judgment, contend that moral thinking has no rational basis. In this book, Hanno Sauer argues that moral reasoning does play a role in moral judgment—but not, as is commonly supposed, because conscious reasoning produces moral judgments directly. Moral reasoning figures in the acquisition, formation, maintenance, and reflective correction of moral intuitions. Sauer (...) proposes that when we make moral judgments we draw on a stable repertoire of intuitions about what is morally acceptable, which we have acquired over the course of our moral education—episodes of rational reflection that have established patterns for automatic judgment foundation. Moral judgments are educated and rationally amenable moral intuitions. -/- Sauer engages extensively with the empirical evidence on the psychology of moral judgment and argues that it can be shown empirically that reasoning plays a crucial role in moral judgment. He offers detailed counterarguments to the anti-rationalist challenge (the claim that reason and reasoning play no significant part in morality and moral judgment) and the emotionist challenge (the argument for the emotional basis of moral judgment). Finally, he uses Joshua Greene's Dual Process model of moral cognition to test the empirical viability and normative persuasiveness of his account of educated intuitions. Sauer shows that moral judgments can be automatic, emotional, intuitive, and rational at the same time. (shrink)