In his recent article “Even if the fetus is not a person, abortion is immoral: The Impairment Argument,” Perry Hendricks sets out to sidestep thorny metaphysical questions regarding human fetuses and present a new argument against abortion – if impairing a fetus with fetal alcohol syndrome is immoral, then killing the fetus is immoral. Hendricks takes inspiration from Judith Jarvis Thomson’s defense of abortion – that even if fetuses are persons with a right to life, the right to life is (...) not the right to use others, so it is acceptable to induce abortion. Together with Bruce Blackshaw, Hendricks set out to strengthen the impairment argument by appealing to Don Marquis’s future like ours (FLO) account of the wrongness of killing. Here I argue the impairment argument falls short in three ways. First, Hendricks and Blackshaw fail to assume fetuses aren’t persons, broadly construed. Second, they fail to show that impairing a fetus is immoral. Third, they overlook abortions that (merely) let the fetus die. Finally, I argue Thomson’s defense of abortion preempts the significance of the impairment argument; Thomson seems to show that even if killing a fetus is prima facie immoral, women still have the right to induce abortion. (shrink)

Inflicting harm is generally preferable to inflicting death. If you must choose between the two, you should generally choose to harm. But prenatal harm seems different. If a mother must choose between harming her fetus or aborting it, she may choose either, at least in many cases. So it seems that prenatal harm is particularly objectionable, sometimes on a par with death. This paper offers an explanation of why prenatal harm seems particularly objectionable by drawing an analogy to the all-or-nothing (...) problem. It then argues that this analogy offers independent support for the ‘voluntarist’ view that at least some parental role obligations are grounded in the choice to be a parent. (shrink)

I argue here that the impairment principle requires clarification. It needs to explain what makes one impairment greater than another, otherwise we will be unable to make the comparisons it requires, the ones that enable us to determine whether b really is a greater impairment than a, and as a result, whether causing b is immoral because causing a is. I then develop two of what I think are the most natural accounts of what might make one impairment greater than (...) another. The quantitative understanding of greater impairment is problematic because it leaves the impairment principle vulnerable to counterexamples; just because impairment b impairs a larger number of abilities or the same number of abilities but for a longer period or to a higher degree does not mean that b is a greater impairment than a. The qualitative understanding of greater impairment is problematic because it does not explain examples of greater impairment used in the literature, means that an abortion is always a qualitatively more severe impairment than causing fetal alcohol syndrome regardless of how the organism is affected, and/or entails that lethal impairment is always greater than nonlethal impairment. (shrink)

Hendricks’ The Impairment Argument (TIA) claims that it is immoral to impair a fetus by causing it to have fetal alcohol syndrome (FAS). Since aborting a fetus impairs it to a greater degree than causing it to have FAS, then abortion is also immoral. In this article, I argue that TIA ought to be rejected. This is because TIA can only succeed if it explains why causing an organism to have FAS impairs it to a morally objectionable degree, entails that (...) abortion impairs an organism to a morally objectionable and greater degree than causing FAS, and satisfies The Impairment Principle’s ceteris paribus clause. In order to do all three things, TIA must presuppose some theory of well-being. Even then, no theory of well-being accomplishes all three tasks that TIA must in order to succeed. However, even if this is false and TIA can meet all three objectives by presupposing some theory of well-being, it would not do very much to advance the debate about the morality of abortion. As I argue, TIA would essentially restate well-established arguments against abortion based on whatever theory of well-being it must presuppose in order to be successful. (shrink)

Perry Hendricks’ original ‘impairment argument’ against abortion relied on ‘the impairment principle’ (TIP): ‘if it is immoral to impair an organism O to the nth degree, then,ceteris paribus, it is immoral to impair O to the n+1 degree.’ Since death is a bigger impairment than fetal alcohol syndrome (FAS), Hendricks reasons that, by TIP, if causing FAS is immoral, then,ceteris paribus, abortion is immoral. Several authors have argued that this conclusion is uninteresting, since theceteris paribusclause is not satisfied in actual (...) cases of abortion: women have reasons for wanting abortions which do not apply to drinking during pregnancy, so all else is not equal, and the conclusion is irrelevant to the morality of actual abortions. In a recent article in this journal, Hendricks and Bruce Blackshaw try to evade this criticism by replacing TIP with the ‘modified impairment principle’ (MIP): ‘if it is immoral to impair an organism O to the nth degree for reason R, then, provided R continues to hold (or is present), it is immoral to impair O to the n+1 degree.’ MIP allows us to derive theultima faciewrongness of abortion (not just itsceteris paribuswrongness) because MIP lacks aceteris paribusclause. But I argue that this lack also renders MIP false: MIP faces counterexamples and implausibly produces genuine moral dilemmas. Since the moral principle on which it relies is false, the modified impairment argument fails. I close by considering what a principle would need to do for the impairment argument to succeed. (shrink)

In response to criticism of the impairment argument for the immorality of abortion, Bruce Blackshaw and Perry Hendricks appeal to Don Marquis’s future-like-ours (FLO) account of the wrongness of killing to explain why knowingly causing fetal impairments is wrong. I argue that wedding the success of the impairment argument to FLO undermines all claims that the impairment argument for the immorality of abortion is novel. Moreover, I argue that relying on FLO when there are alternative explanations for the wrongness of (...) causing FAS begs the question. I conclude, therefore, that the impairment argument remains unsuccessful. (shrink)

Perry Hendricks’ impairment argument for the immorality of abortion is based on two premises: first, impairing a fetus with fetal alcohol syndrome is immoral, and second, if impairing an organism to some degree is immoral, then ceteris paribus, impairing it to a higher degree is also immoral. He calls this the impairment principle. Since abortion impairs a fetus to a higher degree than FAS, it follows from these two premises that abortion is immoral. Critics have focussed on the ceteris paribus (...) clause of TIP, which requires that the relevant details surrounding each impairment be sufficiently similar. In this article, we show that the ceteris paribus clause is superfluous, and by replacing it with a more restrictive condition, the impairment argument is considerably strengthened. There are no data in this work. (shrink)

I provide an updated version of The Impairment Argument against abortion and respond to numerous objections that can be (and have been) raised to it.