When patients have progressive and incurable dementia, should their advance directives always be followed? Contra Dworkin, Dresser argues that when patients remain able to enjoy and participate in their lives, directives to hasten death should sometimes be disregarded.

Misconceived Consent: Miguel has stage IV lung cancer. He has nearly exhausted his treatment options when his oncologist, Dr. Llewellyn, tells him about an experimental vaccine trial that may boost his immune response to kill cancer cells. Dr. Llewellyn provides Miguel with a consent form that explains why the study is being conducted, what procedures he will undergo, what the various risks and benefits are, alternative sources of treatment, and so forth. She even sits down with him, carefully talks through (...) the most important points, and gives him time to ask questions. Though it is a Phase 1 study and the chance that he will benefit is very low, Miguel happily agrees to take part. A week later, after the first experimental injection, she asks him if he is worried about the risks. “Risks?” he asks. “I’m sure this is safe—you’re a doctor, after all!”. (shrink)

I begin my analysis of consent by agreeing with Professor Hurd that consent functions as a “moral transformative” by altering the obligations and permissions that determine the Tightness of others' actions. I further agree with her that consent is intimately related to the capacity for autonomous action; one who cannot alter others' obligations through consent is not fully autonomous. I cannot improve on her elaboration of these points.

In Wrongs and Crimes, Victor Tadros clarifies the debate about whether consent needs to be communicated by separating the question of whether consent requires expressive behaviour from the question of whether it requires “uptake” in the form of comprehension by the consent-receiver. Once this distinction is drawn, Tadros argues both that consent does not require uptake and that consent does not require expressive behaviour that provides evidence to the consent-receiver. As a result, Tadros takes the view that consent requires an (...) attempt to communicate, but nothing more. While I have found Tadros’s arguments for this conclusion intriguing and challenging, I am yet to be persuaded by them. In this essay, I try to say why. (shrink)

Why is consent revocable? In other words, why must we respect someone's present dissent at the expense of her past consent? This essay argues against act-based explanations and in favor of a rule-based explanation. A rule prioritizing present consent will serve our interests the best, in light of our interests in having flexibility over our consent and in minimizing the possibility of error in people's judgments about whether we consent.

There is an ongoing debate about the “ontology” of consent. Some argue that it is a mental act, some that it is a “hybrid” of a mental act plus behaviour that signifies that act; others argue that consent is a performative, akin to promising or commanding. Here it is argued that all these views are mistaken—though some more so than others. We begin with the question whether a normatively efficacious act of consent can be completed in the mind alone. Standard (...) objections to this “mentalist” account of consent can be rebutted. Here we identify a much deeper problem for mentalism. Normatively transformative acts of consent change others’ reasons for acting in a distinctive—“robust”—way. Robust reason-changing involves acts aimed at fulfilling a distinctive kind of reflexive and recognition-directed intention. Such acts cannot be coherently performed in the mind alone. Consent is not a mental act, but nor is it the signification of such an act. Acts of consent cannot be “completed” in the mind, and it is a mistake to view consent behaviour as making known a completed act of consent. The robust reason-changing account of consent developed here shares something with the performative theory, but is not saddled with a label whose home is philosophy of language. Certain kinds of performative utterance may change reasons robustly, but not all robust reason-changing involves or requires acts of speech, and consent can be effected by a wide range of behavioural acts. (shrink)