Centre for Applied Philosophy and Public Ethics University of Melbourne, Parkville, 3010, Australia and.

Whatever its implications for the other features of human agency at its best — for moral responsibility, reasons-responsiveness, self-realization, flourishing, and so on—addiction is universally recognized as impairing autonomy. But philosophers have frequently misunderstood the nature of addiction, and therefore have not adequately explained the manner in which it impairs autonomy. Once we recognize that addiction is not incompatible with choice or volition, it becomes clear that none of the Standard accounts of autonomy can satisfactorily explain the way in which (...) it undermines fully autonomous agency. In order to understand to what extent and in what ways the addicted are autonomy-impaired, we need to understand autonomy as consisting, essentially, in the exercise of the capacity forextended agency.It is because addiction undermines extended agency, so that addicts are not able to integrate their lives and pursue a Single conception of the good, that it impairs autonomy. (shrink)

There continues to be a debate on whether addiction is best understood as a brain disease or a moral condition. This debate, which may influence both the stigma attached to addiction and access to treatment, is often motivated by the question of whether and to what extent we can justly hold addicted individuals responsible for their actions. In fact, there is substantial evidence for a disease model, but the disease model per se does not resolve the question of voluntary control. (...) Recent research at the intersection of neuroscience and psychology suggests that addicted individuals have substantial impairments in cognitive control of behavior, but this "loss of control" is not complete or simple. Possible mechanisms and implications are briefly reviewed. (shrink)

It is often claimed that the autonomy of heroin addicts is compromised when they are choosing between taking their drug of addiction and abstaining. This is the basis of claims that they are incompetent to give consent to be prescribed heroin. We reject these claims on a number of empirical and theoretical grounds. First we argue that addicts are likely to be sober, and thus capable of rational thought, when approaching researchers to participate in research. We reject behavioural evidence purported (...) to establish that addicts lack autonomy. We present an argument that extrinsic forces must be irresistible in order to make a choice non-autonomous. We argue that heroin does not present such an irresistible force. We make a case that drug-oriented desires are strong regular appetitive desires, which do not compromise consent. Finally we argue that an addict’s apparent desire to engage in a harmful act cannot be construed as evidence of irrational or compulsive thought. On these arguments, a sober heroin addict must be considered competent, autonomous and capable of giving consent. More generally, any argument against legalisation of drugs or supporting infringement of the liberty of those desiring to take drugs of addiction must be based on considerations of harm and paternalism, and not on false claims that addicts lack freedom of the will. (shrink)