Brain imaging studies suggest that truth telling constitutes the default of the human brain and that lying involves intentional suppression of the predominant truth response. By manipulating the truth proportion in the Sheffield lie test, we investigated whether the dominance of the truth response is malleable. Results showed that frequent truth telling made lying more difficult, and that frequent lying made lying easier. These results implicate that the accuracy of lie detection tests may be improved by increasing the dominance of (...) the truth response and that habitual lying makes the lie response more dominant. (shrink)

Aquinas held that lying is always a sin, an evil action. In later terminology it falls under what would be called an intrinsically evil action. Under no circumstances can it be a good action. Following Augustine, Aquinas held that even if others must die, one must still never tell a lie. Yet when it comes to self-defense and capital punishment Aquinas’s reasoning seems at odds with itself. One may kill a man in self-defense. Similarly, just as a diseased limb may (...) be cut off for the sake of the good of the whole, so too may an evildoer who is dangerous to the community be killed for the sake of the good of the whole community. Herein lies the tension: why does Aquinas hold that it is licit to kill in self-defense or in capital punishment on account of the common good, but that one may never tell a lie on account of the common good? I argue that Aquinas does indeed have a consistent account. Killing and lying are not analogous, despite the prima facie temptation to lump them together. (shrink)

This article explores Dietrich Bonhoeffer’s writings on truth telling with reference to the problem of medical error in the US, the UK, and other developed nations, with particular attention to physicians’ resistance to disclosing their own mistakes to injured patients and their families. The brief essay ‘What Is Meant by “Telling the Truth”?’ and its historical context — Bonhoeffer’s imprisonment and interrogation in 1943 — is proposed as a text for medical ethicists and others seeking to overcome the barrier of (...) the ‘hidden curriculum’ within the culture of medicine, which encourages medical students and physicians to conceal their errors and to fear disclosure. (shrink)

Against theses of Bernard Williams and Bas C. van Fraassen, it is argued that there are no facts about moral dilemmas, characterizable independently of any moral theory. It is further argued that any adequate theory which denies that there are genuine moral dilemmas must provide a convincing account of how and why moral agents take themselves to be in dilemmatic situations. The ability of rationalist theories, which deny that genuine moral dilemmas occur, to provide such account is examined. Aquinas's contribution (...) receives particular attention. (shrink)

Like several prominent moral philosophers before him, such as St Augustine and St Thomas Aquinas, Kant held that it is never morally permissible to tell a lie. Although a great deal has been written on why and how he argued for this conclusion, comparatively little has been written on what, precisely, Kant considered a lie to be, and on how he differentiated between being truthful and being candid, between telling a lie and being reticent, and between telling a lie and (...) other forms of linguistic deception. That is to say, very little has been written on the scope of Kant's prohibition against lying. In this article I will argue that the scope of the prohibition against lying is narrower than it is commonly supposed to be. (shrink)

One of the great difficulties with Kant’s moral philosophy is that it seems to imply that our moral obligations leave us powerless in the face of evil. Kant’s theory sets a high ideal of conduct and tells us to live up to that ideal regardless of what other persons are doing. The results may be very bad. But Kant says that the law "remains in full force, because it commands categorically" (G, 438-39/57).* The most weI1—known example of...