Not so long ago, many economists and philosophers felt that their disciplines had no use for experimental methods. An experimental study was, by its nature, ‘not economics’ or ‘not philosophy’ – psychology maybe. Opinion has changed dramatically. This issue of Economics and Philosophy represents a collection of recent contributions to experimental research that explicitly deal with empirical findings or methodological questions in the intersection of the two disciplines. To the best of our knowledge, it is the first such collection dedicated to addressing these common interests.

This article illustrates how axiomatic social choice theory can be used in the evaluation of measures of group fitness for a biological hierarchy, thereby contributing to the dialogue between the philosophy of biology and social choice theory. It provides an axiomatic characterization of the ordering underlying the Michod–Viossat–Solari–Hurand–Nedelcu index of group fitness for a multicellular organism. The MVSHN index has been used to analyse the germ-soma specialization and the fitness decoupling between the cell and organism levels that takes place during the evolutionary transition to multicellularity. It is argued that some of the axioms satisfied by the MVSHN group fitness ordering are not appropriate for all stages in this transition.

Gerald Allen (‘Jerry’) Cohen was one of the most influential political philosophers of the latter half of the twentieth century. When he died in 2009 Cohen left behind not only a short book and various unpublished papers but an intellectual legacy that will remain alive for many years. Economics and Philosophy initially planned to organize a review symposium devoted to Cohen's posthumous publications (Cohen 2009, 2011, 2012). However, the reviews became articles and the original project turned into a larger symposium in memory of Cohen. The editors would like to thank Ian Carter, Paula Casal, Serena Olsaretti and Andrew Williams for working with us on that project as it gradually took shape. We all believe that this is a fitting way to honour a remarkable philosophical career inspired by an unrelenting political passion.

G. A. Cohen proposes to eradicate inequality without loss of efficiency or freedom by relying on an egalitarian ethos requiring us to undertake socially useful occupations we would rather not take, and work hard at them, without requesting differential incentive payments. Since the ethos is not legally enforced, Cohen denies it threatens our occupational freedom. Drawing on the work of Joseph Raz, the paper argues that Cohen's proposal threatens our occupational autonomy even if it leaves our legal freedom intact. It also proposes a revised ethos which respects occupational autonomy.

We present an experiment designed to investigate three different mechanisms to achieve impartiality in distributive justice. We consider a first-person procedure, inspired by the Rawlsian veil of ignorance, and two third-party procedures, an involved spectator and a detached observer. First-person veiled stakeholders and involved spectators are affected by an initially unfair distribution that, in the stakeholders’ case, is to be redressed. We find substantial differences in the redressing task. Detached observers propose significantly fairer redistributions than veiled stakeholders or involved spectators. Risk preferences partly explain why veiled stakeholders propose less egalitarian redistributions. Surprisingly, involved spectators, who are informed about their position in society, tend to favour stakeholders holding the same position as they do after the initial distribution.

In traditional decision theory, utility is regarded as a mathematical representation of preferences to be inferred from agents’ choices. In the recent literature at the interface between economics, psychology and neuroscience, several authors argue that economists could develop more predictive and explanatory models by incorporating insights concerning individuals’ hedonic experiences. Some go as far as to contend that utility is literally computed by specific neural areas and urge economists to complement or substitute their notion of utility with some neuro-psychological construct. In this paper, I distinguish three notions of utility that are frequently mentioned in debates about decision theory and examine some critical issues regarding their definition and measurability. Moreover, I provide various empirical and conceptual reasons to doubt that economists should base decision theoretic analyses on some neuro-psychological notion of utility.

John Rawls argues that it is possible to describe a suitably defined initial situation from which to form reliable judgements about justice. In this initial situation, rational persons are deprived of information that is ‘irrelevant from the standpoint of justice’. It is rational, Rawls argues, for persons choosing principles of justice from this standpoint to be guided by the maximin rule. Critics, however, argue that (i) the maximin rule is not the appropriate decision rule for Rawls's choice position; (ii) the maximin argument relies upon an imprecise account of the satisfactory minimum to be secured under the maximin rule; or that (iii) Rawls relies upon unrealistic assumptions about diminishing marginal value. These critics, I will suggest, argue from a number of assumptions that are confused or false. The satisfactory minimum that choosers in the original position – employing the maximin rule – seek to achieve is not a minimum level of primary goods, nor is the satisfactory minimum sought under the maximin rule supplied by the difference principle. I will argue that the maximin argument is more robust than has generally been recognized and that this argument performs a number of important functions in clarifying the nature and implications of Rawls's argument for justice as fairness.

Using an economic bargaining game, we tested for the existence of two phenomena related to social norms, namely norm manipulation – the selection of an interpretation of the norm that best suits an individual – and norm evasion – the deliberate, private violation of a social norm. We found that the manipulation of a norm of fairness was characterized by a self-serving bias in beliefs about what constituted normatively acceptable behaviour, so that an individual who made an uneven bargaining offer not only genuinely believed it was fair, but also believed that recipients found it fair, even though recipients of the offer considered it to be unfair. In contrast, norm evasion operated as a highly explicit process. When they could do so without the recipient's knowledge, individuals made uneven offers despite knowing that their behaviour was unfair.

The nature of basic equality (what it is that makes us all equals) can have implications not only for the question of the currency of egalitarian justice but also for that of its ‘site’. The latter question is raised by G. A. Cohen in his critique of John Rawls's theory of justice. In this paper I argue that Rawlsian liberals might provide an answer to Cohen's critique by establishing two distinct kinds of basic equality, thus providing a ‘twofold account’ of basic equality. A first kind of basic equality gains moral relevance in the context of respectful relations between individuals, and establishes egalitarian duties between them. A second kind of basic equality gains moral relevance in the context of respectful relations between the state and individual citizens, and establishes egalitarian duties of the state toward citizens. The strength of Cohen's critique depends, in part, on the fact that Rawls identified only one kind of basic equality while at the same time wishing to defend a dualist account of individual and state duties.

Research on moral cleansing and moral self-licensing has introduced dynamic considerations in the theory of moral behaviour. Past bad actions trigger negative feelings that make people more likely to engage in future moral behaviour to offset them. Symmetrically, past good deeds favour a positive self-perception that creates licensing effects, leading people to engage in behaviour that is less likely to be moral. In short, a deviation from a ‘normal state of being’ is balanced with a subsequent action that compensates the prior behaviour. We model the decision of an individual trying to reach the optimal level of moral self-worth over time and show that under certain conditions the optimal sequence of actions follows a regular pattern which combines good and bad actions. To explore this phenomenon we conduct an economic experiment where subjects play a sequence of giving decisions (dictator games). We find that donations in the previous period affect present decisions and the sign is negative: participants' behaviour in every round is negatively correlated to what they did in the past. Hence donations over time seem to be the result of a regular pattern of self-regulation: moral licensing (being selfish after altruistic) and cleansing (altruistic after selfish).

Lists of paid registrants at Pacific Division meetings of the American Philosophical Association from 2006–2008 were compared with lists of people appearing as presenters, commentators or chairs on the meeting programme those same years. These were years in which fee payment depended primarily on an honour system rather than on enforcement. Seventy-four per cent of ethicist participants and 76% of non-ethicist participants appear to have paid their meeting registration fees: not a statistically significant difference. This finding of no difference survives scrutiny for several possible confounds. Thus, professional ethicists seem no less likely to free-ride in this context than do philosophers not specializing in ethics. These data fit with other recent findings suggesting that on average professional ethicists behave no morally better than do professors not specializing in ethics.

One of the central motifs of G. A. Cohen's work was his opposition to capitalism in the name of justice. This motif was fully in view in Cohen's work on Robert Nozick's libertarianism: Cohen carefully reconstructed and relentlessly criticized Nozick's apologetics of the free market, which, he thought, was internally coherent but unconvincing. This article suggests that Cohen's opposition to libertarianism did not, however, go far enough, and identifies two respects in which Cohen's position could and should have been more critical of that philosophy.

The first concerns Cohen's negative agenda, that is, his critique of Nozick's libertarianism, the second Cohen's more positive agenda, the formulation of his egalitarian view. With regard to the first, this article argues that Cohen did not subject to full critical pressure the idea of self-ownership libertarians endorse, and consequently accorded it greater inequality-engendering power than libertarians may claim for it. With regard to the second point, this article suggests that Cohen implicitly assumed a market-friendly answer to the question of what consequences people who make choices should be held responsible for, which he could and should have questioned.

This paper examines G. A. Cohen's final criticism of Ronald Dworkin's theory of equality of resources, which targets its treatment of inequalities that arise when some individuals make luckier choices than others make. Rebutting Cohen's argument that such option luck inequalities fail to be just in an unqualified sense, the paper argues that choice does not merely render inequality legitimate but instead can sometimes make inequality just. It also examines the relationship between Cohen's criticism and the conception of equality developed in his earlier influential paper, ‘On the Currency of Egalitarian Justice’.

This paper examines the increasingly popular view that new insights from the science of subjective well-being (SSWB) should play a prominent role in the determination of public policy. Though there are instrumental reasons for caring about societal happiness too, these political aspirations of the SSWB appear to be mostly intrinsically motivated. As the intrinsic value of happiness is endorsed across the political–philosophical spectrum, there is some initial plausibility to the expectation that it should not be too difficult to develop intrinsically motivated policies that can count on widespread support. This paper argues, however, that intrinsically motivated policies based on SSWB findings will always be highly controversial. This is because, although happiness is widely held to be intrinsically valuable, it is usually not deemed unconditionally valuable. By exploring the policy implications of three different views of this conditionality – happiness as a fitting response to the state of the world, authenticity, and merit – it is shown that different views of the conditionality of the intrinsic value of happiness have widely diverging policy implications, which greatly undermines the political aspirations of the SSWB.

There is a long-standing debate in philosophy about whether it is morally permissible to harm one person in order to prevent a greater harm to others and, if not, what is the moral principle underlying the prohibition. Hypothetical moral dilemmas are used in order to probe moral intuitions. Philosophers use them to achieve a reflective equilibrium between intuitions and principles, psychologists to investigate moral decision-making processes. In the dilemmas, the harms that are traded off are almost always deaths. However, the moral principles and psychological processes are supposed to be broader than this, encompassing harms other than death. Further, if the standard pattern of intuitions is preserved in the domain of economic harm, then that would open up the possibility of studying behaviour in trolley problems using the tools of experimental economics. We report the results of two studies designed to test whether the standard patterns of intuitions are preserved when the domain and severity of harm are varied. Our findings show that the difference in moral intuitions between bystander and footbridge scenarios is replicated across different domains and levels of physical and non-physical harm, including economic harms.

The contemporary theory of epistemic democracy often draws on the Condorcet Jury Theorem to formally justify the ‘wisdom of crowds’. But this theorem is inapplicable in its current form, since one of its premises – voter independence – is notoriously violated. This premise carries responsibility for the theorem's misleading conclusion that ‘large crowds are infallible’. We prove a more useful jury theorem: under defensible premises, ‘large crowds are fallible but better than small groups’. This theorem rehabilitates the importance of deliberation and education, which appear inessential in the classical jury framework. Our theorem is related to Ladha's (1993) seminal jury theorem for interchangeable (‘indistinguishable’) voters based on de Finetti's Theorem. We also prove a more general and simpler such jury theorem.

How to rank distributions of benefits and harms? In this book, Larry Temkin addresses this question in detail. Its core claims are two. First, the goodness of a distribution is sometimes ‘essentially comparative’ – it sometimes depends on which alternative distribution(s) it is compared to. Second, there are many cases in which our intuitions are at odds with the transitivity of ‘all things considered better than’ and these cases give us reason to doubt that this relation is transitive. (Transitivity holds that if some alternative a3 is better than a2, and a2 is better than a1, then a3 is better than a1.)

Retributivist accounts of punishment maintain that it is right to punish wrongdoers, even if the punishment has no future benefits. Research in experimental economics indicates that people are willing to pay to punish defectors. A complementary line of work in social psychology suggests that people think that it is right to punish wrongdoers. This work suggests that people are retributivists about punishment. However, all of the extant work contains an important potential confound. The target of the punishment is expected to be aware of the punitive act. Thus, it's possible that people punish because they want to communicate something to the wrongdoer, e.g. disapproval, the presence of a norm, etc. In three studies, we examine whether people will punish even when the punishee will be ignorant. We find that people are no less likely to punish when the punishee will be ignorant. This finding emerges both in a survey study and in a monetized behavioural decision study.

Epistemic arguments play a significant role in the foundations of market liberalism as exemplified, in particular, by the work of F. A. Hayek. Competition in free markets is claimed to be the most effective device both to utilize the knowledge dispersed throughout society as well as create new knowledge through innovation competition. The fast pace with which new economic opportunities are discovered and costs are reduced is considered proof of the benefits of free markets to the common good. However, with its inherently unpredictable consequences, innovation competition is actually ambiguous in this respect. This feature raises questions over the stringency of market liberal pleas that oppose quests for redistribution and environmental concerns in an absolute fashion.