In Italy, a judge reduced the sentence of a defendant by 1 year in response to evidence for a genetic predisposition to violence. The best characterized of these genetic differences, those in the monoamine oxidase A (MAOA), were cited as especially relevant. Several months previously in the USA, MAOA data contributed to a jury reducing charges from 1st degree murder (a capital offence) to voluntary manslaughter. Is there a rational basis for this type of use of MAOA evidence in criminal (...) court? This paper will review in context recent work on the MAOA gene–environment interaction in predisposing individuals to violence and address the relevance of such findings to murder trials. Interestingly, the MAOA genetic variants impact future violence and aggression only when combined with the adverse environmental stimuli of childhood maltreatment. Thus nature and nurture interact to determine the individual’s risk. Based on current evidence, I argue there is a weak case for mitigation. But should future experiments confirm the hypothesis that individual differences in impulse control and response to provocation found in MAOA-L men (without abuse) are significantly magnified when combined with childhood maltreatment, the case could turn into a stronger one. (shrink)

The aim of this paper is to critically discuss the plausibility of legal moralism with an emphasis on some central and recent versions. First, this paper puts forward and defends the thesis that recently developed varieties of legal moralism promoted by Robert P. George, John Kekes and Michael Moore are more plausible than Lord Devlin's traditional account. The main argument for this thesis is that in its more modern versions legal moralism is immune to some of the forceful challenges made (...) to Devlin by Hart, Dworkin and Feinberg among others. Second, however, the paper challenges the new generation of legal moralists and suggests some areas for further development. Although Devlin's position has been scrutinized thoroughly in the literature on the philosophy of law, there has, to my knowledge, been no comparable, systematic critique of these different proponents of legal moralism. (shrink)

In several papers, I have argued for a theory of distributive justice and considered its implications. This theory includes a principle of responsibility that was endorsed by others within an account of defensive force (self-defense and defense of others). Whitley Kaufman criticizes this account which he refers to as the "distributive justice theory of self-defense" (DJ theory). In this paper, I respond to this criticism. I argue that Kaufman presents the theory inaccurately, that his standard of evaluation of the theory (...) is inadequate and that his claim that the theory should be rejected is unconvincing. (shrink)

According to a famous maxim, ignorance or mistake of law is no excuse. This maxim is supposed to represent both the standard and the proper rule of law. In fact, this maxim should be qualified in both respects: ignorance and mistake of law sometimes are, and (perhaps even more often) should be, excused. But this dual qualification only reinforces the fundamental and ubiquitous assumption which underlies the discussions of the subject, namely, that the only ground of exculpation relevant to ignorance (...) or mistake of law is excuse due to lack of (sufficient) culpability. The paper challenges this consensus. I argue that, according to the best conception of justification, ignorance and mistake, including ignorance and mistake of law, could be justified. Generally, ignorance and mistake are justified when based on a rational analysis of the information the agent has and should have. The conceptual possibility of justified ignorance or mistake is demonstrated mainly with respect to ignorance or mistake of law due to reliance on the guidance of public officials or private lawyers. (shrink)

Can the state, as opposed to its individual human members in their personal capacity, intelligibly seek to avoid blame for unjustified wrongdoing by invoking excuses (as opposed to justifications)? Insofar as it can, should such claims ever be given moral and legal recognition? While a number of theorists have denied it in passing, the question remains radically underexplored. -/- In this article (in its penultimate draft version), I seek to identify the main metaphysical and moral objections to state excuses, and (...) begin to investigate their strength. I work from the ecumenical assumption that general understandings of modern states as group moral agents proper or as mere fictional points of imputation for individual behaviour are both plausible, and that the question of state excuses should be asked in terms of both paradigms. Issues addressed include: the lack of state consciousness/affect, the nature and relevance of developmental and executive defects in group agents, the value of state interests and how interests relate to plausible claims of excuses, the shortfall of responsibility argument for group responsibility and its interface with state excuses, the symbolic and consequential (dis)value that state excuses may have, as well as concerns that states are entities that should live up to outstandingly high virtuous standards of impartiality and equanimity. -/- I conclude that even if the range of excuses available to states does not overlap neatly with excuses available to ordinary individuals, some excuses may still be morally available to states. More generally, I emphasize the need for a systematic discussion of group excuses writ large, and of their relationship with the wider question of when group entities may legitimately be singled out to bear adverse normative consequences for wrongdoing. (shrink)

This is a review essay of Gardner, John. 2007, Offences and Defences: Selected Essays in the Philosophy of Criminal Law, Oxford: Oxford University Press, 288 pp.

Whether we understand it descriptively or normatively, the slogan that ignorance of the law is no excuse is false. Our legal system sometimes excuses those who are ignorant of the law on those grounds and should. Still, the slogan contains a grain of truth; mistakes of law excuse less readily than mistakes of fact, and ought to. This paper explains the asymmetry by identifying a principle of excuse of the form “If defendant D has a false belief that p and (...) _____, then D is excused”, which has the following feature: it is true frequently when p is a non-legal proposition, but it is false often when p is a proposition about the law. Under this principle of excuse, mistakes excuse by showing the agent to have acceptable commitments for recognizing, weighing, and responding to reasons. Many mistakes of fact show this; they show that the agent’s deliberation led to objectionable action because of faulty inputs and not to fault in the deliberation itself. Mistakes of law, by contrast, frequently indicate that the agent has faulty commitments when it comes to legal reasons; they therefore do not provide excuse under the proposed principle of excuse. It is argued that this explanation of the asymmetry between mistakes of fact and law takes us a great distance towards explaining the relevance of mental state to responsibility, an issue of great importance to moral philosophy. (shrink)