The question whether ethical behavior is biologically determined may refer either to the capacity for ethics (i.e., the proclivity to judge human actions as either right or wrong), or to the moral norms accepted by human beings for guiding their actions. I herein propose: (1) that the capacity for ethics is a necessary attribute of human nature; and (2) that moral norms are products of cultural evolution, not of biological evolution. Humans exhibit ethical behavior by nature because their biological makeup (...) determines the presence of three necessary conditions for ethical behavior: (i) the ability to anticipate the consequences of one’s own actions; (ii) the ability to make value judgments; and (iii) the ability to choose between alternative courses of action. Ethical behavior came about in evolution not because it is adaptive in itself, but as a necessary consequence of man’s eminent intellectual abilities, which are an attribute directly promoted by natural selection. That is, morally evolved as an exaptation, not as an adaptation. Since Darwin’s time there have been evolutionists proposing that the norms of morality are derived from biological evolution. Sociobiologists represent the most recent and most subtle version of that proposal. The sociobiologists' argument is that human ethical norms are sociocultural correlates of behaviors fostered by biological evolution. I argue that such proposals are misguided and do not escape the naturalistic fallacy. The isomorphism between the behaviors promoted by natural selection and those sanctioned by moral norms exist only with respect to the consequences of the behaviors; the underlying causations are completely disparate. (shrink)

The dominant theory of the evolution of moral cognition across a variety of fields is that moral cognition is a biological adaptation to foster social cooperation. This chapter argues, to the contrary, that moral cognition is likely an evolutionary exaptation: a form of cognition where neurobiological capacities selected for in our evolutionary history for a variety of different reasons—many unrelated to social cooperation—were put to a new, prosocial use after the fact through individual rationality, learning, and the development and transmission (...) of social norms. This chapter begins with a brief overview of the emerging behavioral neuroscience of moral cognition. It then outlines a novel theory of moral cognition that I have previously argued explains these findings better than alternatives. Finally, it shows how the evidence for this theory of moral cognition and human evolutionary history together suggest that moral cognition is likely not a biological adaptation. Instead, like reading sheet music or riding a bicycle, moral cognition is something that individuals learn to do—in this case, in response to sociocultural norms created in our ancestral history and passed down through the ages to enable cooperative living. (shrink)

This paper offers a descriptive account of the transition in evolutionary ethics with reference to some major works from ethics, sociobiology, moral psychology, and primatology. The causes and nature of the transition are discussed by making a distinction between traditional and recent trends in evolutionary ethics enabling us to understand the significance of contemporary evolutionary ethics. The study is gradually directed toward a crucial question of ethics that is the place of reason in morality and what evolutionary ethics implies for (...) Kantian ethics in the question of reason. Many advocates of evolutionary ethics and evolutionary moral psychology claim that reason plays no role or plays a very insignificant role in morality. Such assertion often leads to a rejection of Kantian ethics in particular and cognitivism in general. In this backdrop, the scope of reconciling evolutionary ethics with Kantian ethics as proposed by Frederick Rauscher is analyzed. This paper is thus an attempt to expose the significance of evolutionary ethics with reference to the relation of reason and morality. (shrink)

Many hope that our values, purged of messy human contingency, could aspire to correspond with mind-independent, rationally obligatory, and eternal ethical facts. But if the arguments of this thesis are on the right track, we should reject the search for non-natural and mind-independent moral truths.

Recent discussions about moral enhancement presuppose and recommend sets of values that relate to both the Western tradition of moral philosophy and contemporary empirical results of natural and social sciences, including moral psychology. It is argued here that this is a typology of thought that requires a fundamental interrogation. Proponents of moral enhancement do not account for important critical analyses of moral discourse, beginning with that of Friedrich Nietzsche and continuing with more prominent twentieth century thinkers such as the poststructuralist (...) Michel Foucault, the deconstructionist Jacques Derrida, and the moral philosopher Alasdair MacIntyre. In this paper, such analyses are taken into account to highlight the need for more fundamental philosophical interrogation of the project of moral enhancement. (shrink)

This paper addresses an important issue that has been commonly debated in moral psychology, namely the normative and metaethical implications of our differing intuitive responses to morally indistinguishable dilemmas. The prominent example of the asymmetry in our responses is that people often intuitively accept pulling a switch and deny pushing as a morally permissible way of sacrificing an innocent person to save more innocent people. Joshua Greene traces our negative responses to actions involving “up close and personal” harm back to (...) our evolutionary past and argues that this undermines the normative power of deontological judgments. I reject Greene’s argument by arguing that our theoretical moral intuitions, as opposed to concrete and mid-level ones, are independent of direct evolutionary influence because they are the product of autonomous moral reasoning. I then explain how both consequentialist and deontological theoretical intuitions, which enable us to make important moral distinctions and grasp objective moral facts, are produced by the exercise of autonomous moral reasoning and the process of cultural evolution. My conclusion will be that Greene is not justified in his claim that deontology is normatively inferior to consequentialism. (shrink)

What does human evolutionary theory reveal about the origins of human nature and the constraints it imposes on human cognition, behavior, and society? “The whole field of human evolution is pregnant with philosophical questions of great interest”, Michael Ruse concludes in the final passage of The Philosophy of Human Evolution. This engaging and eminently readable romp through the philosophical landscape of human evolution fills a significant niche in the existing literature. There are numerous scientific texts surveying historical and contemporary problems (...) in the field of human evolution, and there are many philosophical texts exploring conceptual and methodological problems in evolutionary theory. Ruse interweaves scientific and philosophical work on human evolution with the latest work in biological theory to produce a unique and timely book, one that addresses a range of important topics that rarely find their way into works of this genre. With a relentless lucidity and charming, f .. (shrink)

An increasing number of scholars argue that moral judgements are adaptations, i.e., that they have been shaped by natural selection. Is this hypothesis true? In this paper I shall not attempt to answer this important question. Rather, I pursue the more modest aim of pointing out three difficulties that anybody who sets out to determine the adaptedness of moral judgments should be aware of (though some so far have not been aware of). First, the hypothesis that moral judgements are adaptations (...) has been advocated in various different specificities and scopes, and on various different levels. Second, the three kinds of evidence that have most often been appealed to by discussants of this hypothesis require additional arguments. And third, there is significant reasonable disagreement about what moral judgements essentially are. (shrink)

What is the significance of empirical moral psychology for metaethics? In this article we take up Michael Ruse’s evolutionary debunking argument against moral realism and reassess it in the context of the empirical state of the art. Ruse’s argument depends on the phenomenological presumption that people generally experience morality as objective. We demonstrate how recent experimental findings challenge this widely-shared armchair presumption and conclude that Ruse’s argument fails. We situate this finding in the recent debate about Carnapian explication and argue (...) that it illustrates the necessary role that empirical moral psychology plays in explication preparation. Moral psychology sets boundaries for reasonable desiderata in metaethics and, therefore, it is necessary for metaethics. (shrink)

I examine three kinds of criticism directed at philosophical genealogy. I call these substantive, performative, and semantic. I turn my attention to a particular substantive criticism that one may launch against essay two of On the Genealogy of Morals that turns on how Nietzsche answers “the time-crunch problem”. On the surface, there is evidence to suggest that Nietzsche accepts a false scientific theory, namely, Lamarck’s Inheritability Thesis, in order to account for the growth of a new human “organ”—morality. I demonstrate (...) that the passages interpreted by some scholars to prove that Nietzsche is a Lamarckian can be reinterpreted along Darwinian lines. I demonstrate that Nietzsche hits upon the right drivers of phenotypical change in humans, namely, torture and enclosures (e.g., walls of early states), but misinterprets their true impact. Nietzsche believes that these technologies are responsible for producing what I call “culture-serving memory” and the bad conscience by causing emotions that once were expressed outwardly to turn inward causing the “psychological digestion” of the human animal. In reality, however, these mechanisms are conducive to breeding a particular type of individual, namely, one who is docile, by introducing artificial and unconscious selective pressures into the environment of early humans. In showing that Nietzsche’s genealogical account of memory and bad conscience is not underpinned on a false scientific theory and is consistent with Neo-Darwinism, I deflect a potentially fatal blow regarding the veracity of Nietzsche’s genealogies. -/- . (shrink)

The Internalization Hypothesis (I.H.), as expressed in GM II 16 of On the Genealogy of Morals, is the essential albeit under-theorized principle of Nietzsche’s psychology. In the following essay, I investigate the purpose I.H. serves concerning Nietzsche’s theory of drives as well as the Hypothesis’s epistemic warrant. I demonstrate that I.H. needs a Neo-Darwinian underpinning for two reasons: 1) to answer the Time-Crunch Problem of Transformation, and 2) in order to render it coherent with Nietzsche’s physiological determinism as articulated in (...) Twilight of the Idols. My re-examination of I.H., then, serves to underwrite the Hypothesis on solid empirical footing. In addition, my analysis provides further evidence to think that Brian Leiter’s initial (but naïve) type-fact reading of Nietzsche’s philosophy of psychology is accurate, deterministic warts and all. (shrink)

Most moral philosophers work under the assumption that ordinary folk morality is committed to objectivism—that ordinary folk view morality in absolute terms. This datum serves to constrain and shape philosophical metaethics, since those working in this field feel compelled to make sense of it. In this chapter, I discuss why philosophers take on this commitment. I also outline the relevant experimental research exploring whether, and to what extent, ordinary folk think of morality in absolute terms. Finally, I turn toward a (...) more general discussion of what implications this work may have for philosophical ethics. (shrink)