SummaryCross-sectional studies in Australia and the Philippines and a longitudinal prospective study in a selected Australian sample of breast-feeding mothers have shown that basal serum prolactin concentrations are elevated during 15–21 months of lactational amenorrhoea.A predictive model of serum PRL levels and return of cyclic ovarian activity during full breast-feeding, partial breast-feeding and weaning has been developed from the results of breast-feeding behaviour and serum PRL, gonadotrophin and oestradiol measurements in 34 mothers breast-feeding on demand for a mean of 67 (...) weeks.Breast-feeding patterns influence serum PRL levels. Important factors during full breast-feeding are the age of the baby, the longest interval between feeds at night and total 24-hr suckling time, and following the introduction of supplements, the mean interval between feeds, together with the total 24-hr suckling time and the number of solid supplements per day.The precise mechanisms whereby breast-feeding regulates cyclic ovarian activity remain unknown. Gonadotrophin secretion appears to be quantitatively normal, but qualitative changes, secondary to altered hypothalamic activity, may be the most important factor. A direct inhibitory effect of PRL on ovarian follicular development and steroidogenesis remains possible.Ovulation with a normal luteal phase is probable for 30% of breast-feeding mothers before the first menses, but is unlikely before 6 months, provided breast-feeding is frequent day and night.Measurement of serum PRL is a sensitive index of the return of menstruation and fertility during lactation in the population studied. (shrink)

“What do you see when you look at your face in the mirror?” asks J. David Velleman in introducing his philosophical theory of action. He takes this simple act of self-scrutiny as a model for the reflective reasoning of rational agents: our efforts to understand our existence and conduct are aided by our efforts to make it intelligible. Reflective reasoning, Velleman argues, constitutes practical reasoning. By applying this conception, _Practical Reflection_ develops philosophical accounts of intention, free will, and the (...) foundation of morals. This new edition of _Practical Reflection_ contains the original 1989 text along with a new introduction and is the latest entry in The David Hume Series of Philosophy and Cognitive Science Reissues, which keeps in print previously published indispensable works in the area of cognitive science. _ _ _ _. (shrink)

What happens when someone acts? A familiar answer goes like this. There is something that the agent wants, and there is an action that he believes conducive to its attainment. His desire for the end, and his belief in the action as a means, justify taking the action, and they jointly cause an intention to take it, which in turn causes the corresponding movements of the agent's body. I think that the standard story is flawed in several respects. The flaw (...) that will concern me in this paper is that the story fails to include an agent-or, more precisely, fails to cast the agent in his proper role. (shrink)

The agent portrayed in much philosophy of action is, let's face it, a square. He does nothing intentionally unless he regards it or its consequences as desirable. The reason is that he acts intentionally only when he acts out of a desire for some anticipated outcome; and in desiring that outcome, he must regard it as having some value. All of his intentional actions are therefore directed at outcomes regarded sub specie boni: under the guise of the good. This agent (...) is conceived as being capable of intentional action—and hence as being an agent—only by virtue of being a pursuer of value. I want to question whether this conception of agency can be correct. Surely, so general a capacity as agency cannot entail so narrow a cast of mind. Our moral psychology has characterized, not the generic agent, but a particular species of agent, and a particularly bland species of agent, at that. It has characterized the earnest agent while ignoring those agents who are disaffected, refractory, silly, satanic, or punk. I hope for a moral psychology that has room for the whole motley crew. I shall begin by examining why some philosophers have thought that the attitudes motivating intentional actions involve judgments of value. I shall then argue that their conception of these attitudes is incorrect. Finally, I shall argue that practical reason should not be conceived as a faculty for pursuing value. (shrink)

Existing accounts of shared intention (by Bratman, Searle, and others) do not claim that a single token of intention can be jointly framed and executed by multiple agents; rather, they claim that multiple agents can frame distinct, individual intentions in such a way as to qualify as jointly intending something. In this respect, the existing accounts do not show that intentions can be shared in any literal sense. This article argues that, in failing to show how intentions can be literally (...) shared, these accounts fail to resolve what seems problematic in the notion of shared intention. It then offers an account in which the problem of shared intention is resolved, because intention can indeed be literally shared. This account is derived from Margaret Gilbert’s notion of a “pool of wills,” to which it applies Searle’s definition of intention. (shrink)

A story does more than recount events; it recounts events in a way that renders them intelligible, thus conveying not just information but also understanding. We might therefore be tempted to describe narrative as a genre of explanation. When the police invite a suspect to “tell his story,” they are asking him to explain the blood on his shirt or his absence from home on the night of the murder; and whether he is judged to have a “good story” will (...) depend on its adequacy as an explanation. Can we account for the explanatory force of narrative with the models of explanation available in the philosophy of science? Or does narrative convey a different kind of understanding, which requires a different model and perhaps even a term other than ‘explanation’? (shrink)

Images of myself being Napoleon can scarcely merely be images of the physical figure of Napoleon.... They will rather be images of, for instance, the desolation at Austerlitz as viewed by me vaguely aware of my short stature and my cockaded hat, my hand in my tunic.

Abstract I argue that meaning in life is importantly influenced by bioloical ties. More specifically, I maintain that knowing one's relatives and especially one's parents provides a kind of self-knowledge that is of irreplaceable value in the life-task of identity formation. These claims lead me to the conclusion that it is immoral to create children with the intention that they be alienated from their bioloical relatives?for example, by donor conception.

As a philosopher of action, I might be expected to believe that the will is a good thing. Actually, I believe that the will is a great thing - awesome, in fact. But I'm not thereby committed to its being something good. When I say that the will is awesome, I mean literally that it is a proper object of awe, a response that restrains us from abusing the will and moves us rather to use it respectfully, in a way (...) that does it justice. To say that the will is a good thing, however, would imply that having a will is better than not having one, or that using it is better than not using it - neither of which I am prepared to assert as a general rule. Speaking metaphorically, I would say that the will is like a magic wand. In fairy tales, the character who looks upon a magic wand as an unalloyed good is destined to be sadder but wiser in the end. Being a magician isn't better than being an ordinary human, just different; and a magician must value his powers by respecting them and therefore using them appropriately, even sparingly, not by using them as much as possible. (shrink)

The terms `endurance' and `perdurance' are commonly thought to denote distinct ways for an object to persist, but it is surprisingly hard to say what these are. The common approach, defining them in terms of temporal parts, is mistaken, because it does not lead to two coherent philosophical alternatives: endurance so understood becomes conceptually incoherent, while perdurance becomes not just true but a conceptual truth. Instead, we propose a different way to articulate the distinction, in terms of identity rather than (...) temporal parts: an object endures if its identity is determined at every moment at which it exists. We make precise what it means for the identity of an object to be determined at a moment. We also discuss what role the endurance / perdurance distinction, so understood, should play in the debates about time, material objects and personal identity. (shrink)

How a "right to die" may become a "coercive option".

Harry Frankfurt's philosophy of action as a prolegomenon to the Zhuangzi.

Epistemic freedom is the freedom to affirm anyone of several incompatible propositions without risk of being wrong. We sometimes have this freedom, strange as it seems, and our having it sheds some light on the topic of free will and determinism. This paper sketches a potential explanation for our feeling of freedom. The freedom that I postulate is not causal but epistemic (in a sense that I shall define), and the result is that it is quite compatible with determinism. I (...) therefore claim that insofar as we feel metaphysically free-free in a sense that would be incompatible with determinism-we are mistaking the epistemic freedom that we have for a kind of freedom that we may lack. This claim will lead me, at the end of the paper, to a projectivist account of moral responsibility. Ascriptions of moral responsibility, I shall suggest, should be treated in the same way as ascriptions of color or other secondary qualities. (shrink)

I offer an account of how ideals motivate us. My account suggests that although emulating an ideal is often rational, it can lead us to do irrational things. * This is the third in a series of four papers on narrative self-conceptions and their role in moral motivation. In the first paper, “The Self as Narrator” (to appear in Autonomy and the Challenges to Liberalism: New Essays, ed. Joel Anderson and John Christman), I explore the motivational role of narrative self-conceptions, (...) drawing on Daniel Dennett’s notion of the self as a “center of narrative gravity”. In the second paper, “Willing the Law” (in Practical Conflicts, ed. Monika Betzler and Peter Baumann [Cambridge: Cambridge University Press, forthcoming]), I explore the role of selfconceptions in Kantian “conflicts in the will”, drawing on Christine Korsgaard’s notion of “practical identities”. In a fourth paper, “A Sense of Self” (ms), I explore the role of narrative self-con-ceptions in Kantian “conflicts in conception”, drawing on the work of Thomas Nagel and John Perry on the self. (shrink)

I have therefore decided to venture out of the philosophical armchair in order to examine the empirical evidence, as gathered by psychologists aiming to prove or disprove motivational conjectures like mine. By and large, this evidence is indirect in relation to my account of agency, since it is drawn from cases in which the relevant motive has been forced into the open by the manipulations of an experimenter. The resulting evidence doesn’t tend to show the mechanism of agency humming along (...) in accordance with my specifications; it tends to show the knocks and shudders that such a mechanism emits when put under stress. But we often learn about the normal workings of things by subjecting them to abnormal conditions; and viewed in this light, various programs of psychological research offer indirect support to my account of agency. I’ll begin by reviewing the relevant research, leaving its relevance to my account of agency for the final section of the paper. (shrink)

I reconstruct Kant's derivation of the Categorical Imperative (CI) as an argument that deduces what the voice of conscience must say from how it must sound - that is, from the authority that is metaphorically attributed to conscience in the form of a resounding voice. The idea of imagining the CI as the voice of conscience comes from Freud; and the present reconstruction is part of a larger project that aims to reconcile Kant's moral psychology with Freud's theory of moral (...) development. As I reconstruct it, Kant's argument yields an imperative commanding us to act for reasons whose validity we can consistently will to be common knowledge among all agents. Universalizing a maxim thus turns out to consist in willing, not that there be some universally quantified rule of conduct, but rather that a principle of practical reasoning be common knowledge - as a principle of reasoning ought to be. (shrink)

The view that something's being good for a person depends on his capacity to care about it – sometimes called internalism about a person’s good – is here derived from the principle that 'ought' implies 'can'. In the course of this derivation, the limits of internalism are discussed, and a distinction is drawn between two senses of the phrase "a person's good".

This paper examines the most influential naturalist theory of health, Christopher Boorse’s ‘biostatistical theory’ . I argue that the BST is an unsuitable candidate for the rôle that Boorse has cast it to play, namely, to underpin medicine with a theoretical, value-free science of health and disease. Following the literature, I distinguish between “real” changes and “mere Cambridge changes” in terms of the difference between an individual’s intrinsic and relational properties and argue that the framework of the BST essentially implies (...) a Cambridge-change criterion. The examination reveals that this implicit criterion commits the BST to the troubling view that an individual could go from being diseased to healthy, or vice versa, without any physiological change in that individual. Two problems follow: the current framework of the BST is ill-equipped to formally embrace Cambridge changes and it is theoretically dubious. The arguments advanced here are not limited to the BST; I suggest they extend to any naturalist claim to underpin medical practice with a value-free theory of health and disease defined in terms of an evolutionary view of biological fitness. (shrink)

Just when philosophers of science thought they had buried Freud for the last time, he has quietly reappeared in the writings of moral philosophers. Two analytic ethicists, Samuel Scheffler and John Deigh, have independently applied Freud’s theory of the superego to the problem of moral motivation. Scheffler and Deigh concur in thinking that although Freudian theory doesn’t entirely solve the problem, it can nevertheless contribute to a solution.

This is the second of three papers on issues of personal identity, existence, and nonexistence. Here I argue that the birth of a child leads us to before and after value judgments that appear to be inconsistent. Consider, for example, a 14-year-old girl who decides to have a baby. We tend to think that the birth of a child to a 14-year-old would be a very unfortunate event, and hence that she should not decide to have a child. But once (...) the child has been born, we are loath to say that it shouldn't have been born. This conundrum is one of several that Derek Parfit considers in Part IV of Reasons and Persons. I suggest a solution that Parfit doesn't consider. Parfit's discussion is predicated on the assumption that our value judgments must be consistent, in the sense that they could be satisfied by some possible distribution of value across the possibilities. As we would say in logic, there must be a model of our value judgments, consisting in a distribution of value. I think that the present case gives us reason to reject this assumption. (shrink)

Just as our scientific inquiries are framed by our prior conception of what can be observed ? that is, of observables ? so our practical deliberations are framed by our prior conception of what can be done, that is, of doables. And doables are socially constructed, with the result that they vary between societies. I explore how doables are constructed and conclude with some remarks about the implications for moral relativism.

J. David Archibald explores how Darwin first came to the conclusion that species had evolved in different regions throughout the world. Carefully retracing Darwin's gathering of evidence and the evolution of his thinking, Origins of Darwin's Evolution achieves a new understanding of how Darwin crafted his transformative theory.

Die medizinischen Interventionen bei Intersexualität basieren auf den vorherrschenden gesellschaftlichen Geschlechtsnormen, die das intersexuelle Kind als behandlungsbedürftige Abweichung sehen. Aus diesem Blickwinkel wird unter „Heilung“ die erfolgreiche Integration des intersexuellen Individuums in ein eindeutig abgegrenztes Geschlecht verstanden, das durch eine medizinische Behandlung hergestellt wird. Dabei wird einerseits vorausgesetzt, dass unbehandelte intersexuelle Individuen nicht erfolgreich „heilen“ können, und andererseits, dass behandelte Individuen medizinische Interventionen als „Heilungsmaßnahmen“ erleben. Die Exploration der medizinischen Fachliteratur und der Berichte aus erster Hand sowohl von behandelten als (...) auch von unbehandelten Menschen mit Intersexualität lassen diese Vorannahmen fragwürdig erscheinen. In der Literatur wird nämlich belegt, dass als grundlegende Mittel, die tatsächlich bei diesen Menschen zu einer „Heilung“ führen, zentrale Werte wie Selbstakzeptanz der Andersartigkeit, Überwindung der Isolation durch Austausch mit anderen in ähnlichen Situationen und Wahrhaftigkeit von Bedeutung sind. Dies würde bedeuten, dass eine medizinische Intervention zur Überwindung der sozialen Ausgrenzung in Fällen von Intersexualität möglicherweise nicht die effektivste „Heilungsmaßnahme“ ist. Die medizinische Behandlung muss vielmehr darauf ausgerichtet werden, die Reaktion auf Intersexualität zu überwinden, als diesen Zustand selbst als pathologisch anzusehen. (shrink)