The trolley problem, first described by Foot (1967) and Thomson (The Monist, 59, 204–217, 1976), is one of the most famous and influential thought experiments in deontological ethics. The general story is that a runaway trolley is threatening the lives of five people. Doing nothing will result in the death of those persons, but acting in order to save those persons would unavoidably result in the death of another, sixth person. It appears that, depending on the situation, we have different (...) moral judgments about the permissibility of action. We will review and systematize all the proposals in the literature of the past 35 years that have attempted to grasp our moral intuitions in a simple deontological principle. In particular, seventeen proposals will be classified: six algorithmic, seven psychological, and four other invalid accounts. This review and classification sheds light on some subtle differences and clarify a few issues. (shrink)

Recent experimental research has revealed surprising patterns in people's intuitions about free will and moral responsibility. One limitation of this research, however, is that it has been conducted exclusively on people from Western cultures. The present paper extends previous research by presenting a cross-cultural study examining intuitions about free will and moral responsibility in subjects from the United States, Hong Kong, India and Colombia. The results revealed a striking degree of cross-cultural convergence. In all four cultural groups, the majority of (...) participants said that (a) our universe is indeterministic and (b) moral responsibility is not compatible with determinism. (shrink)

Experimental philosophy is a comparatively new field of research, and it is only natural that many of the key methodological questions have not even been asked, much less answered. In responding to the comments of our critics, we therefore find ourselves brushing up against difficult questions about the aims and techniques of our whole enterprise. We will do our best to address these issues here, but the field is progressing at a rapid clip, and we suspect that it will be (...) possible to provide more adequate answers a few years down the line. (shrink)

An empirical study of people's intuitions about freedom of the will. We show that people tend to have compatiblist intuitions when they think about the problem in a more concrete, emotional way but that they tend to have incompatiblist intuitions when they think about the problem in a more abstract, cognitive way.

In three experiments involving 104 children and 86 adults we investigated the extent to which harm brought about by physical contact is judged to be worse than harm caused by impersonal, no-contact actions. In Experiment 1, Italian monolingual children aged 4 to 6 were asked to indicate whether they would prioritize saving five persons through contact over saving three persons without contact with both courses of action involving harm to a single victim. A preference for saving more persons did not (...) emerge until the age of 6 years. By contrast, in Experiment 2, children with a Slovenian-Italian linguistic and cultural background judged that to save five with contact was preferable even at the age of 4 and 5 years. In Experiment 3, Slovenian-Italian adults were also significantly more likely than Italian-only speakers to advocate using contact, although in a direct comparison, both groups prioritized saving five over three persons, regardless of the means. Moral diversity is discussed in terms of cultural and linguistic constraints that may serve to mediate the use of considerations of contact in an intuitive moral psychology. (shrink)

In this article, I provide a guide to some current thinking in empirical moral psychology on the nature of moral intuitions, focusing on the theories of Haidt and Narvaez. Their debate connects to philosophical discussions of virtue theory and the role of emotions in moral epistemology. After identifying difficulties attending the current debate around the relation between intuitions and reasoning, I focus on the question of the development of intuitions. I discuss how intuitions could be shaped into moral expertise, outlining (...) Haidt’s emphasis on innate factors and Narvaez’s account in terms of a social-cognitive model of personality. After a brief discussion of moral relativism, I consider the implications of the account of moral expertise for our understanding of the relation between moral intuitions and reason. I argue that a strong connection can be made if we adopt a broad conception of reason and a narrow conception of expertise. (shrink)

Our interest in this paper is to drive a wedge of contention between two different programs that fall under the umbrella of “experimental philosophy”. In particular, we argue that experimental philosophy’s “negative program” presents almost as significant a challenge to its “positive program” as it does to more traditional analytic philosophy.

Means-based harms are frequently seen as forbidden, even when they lead to a greater good. But, are there mitigating factors? Results from five experiments show that judgments about means-based harms are modulated by: 1) Pareto considerations (was the harmed person made worse off?), 2) the directness of physical contact, and 3) the source of the threat (e.g. mechanical, human, or natural). Pareto harms are more permissible than non-Pareto harms, Pareto harms requiring direct physical contact are less permissible than those that (...) do not, and harming someone who faces a mechanical threat is less permissible than harming someone who faces a non-mechanical threat. These results provide insight into the rich representational structure underlying folk-moral computations, including both the independent and interacting roles of the inevitability, directness and source of harm. (shrink)

Thought experimental methods play a central role in empirical moral psychology. Against the increasingly common interpretation of recent experimental data, I argue that such methods cannot demonstrate that moral intuitions are produced by reflexive computations that are implicit, fast, and largely automatic. I demonstrate, in contrast, that evaluating thought experiments occurs at a near-glacial pace relative to the speed at which reflexive information processing occurs in a human brain. So, these methods allow for more reflective and deliberative processing than has (...) commonly been assumed. However, these methods may still provide insight into some human strategies for navigating unfamiliar moral dilemmas. (shrink)

The traditional philosophical doctrine of double effect claims that agents’ intentions affect whether acts are morally wrong. Our behavioral study reveals that agents’ intentions do affect whether acts are judged morally wrong, whereas the temporal order of good and bad effects affects whether acts are classified as killings. This finding suggests that the moral judgments are not based on the classifications. Our results also undermine recent claims that prior moral judgments determine whether agents are seen as causing effects intentionally rather (...) than as side effects. (shrink)

Developmental psychologists have long argued that the capacity to distinguish moral and conventional transgressions develops across cultures and emerges early in life. Children reliably treat moral transgressions as more wrong, more punishable, independent of structures of authority, and universally applicable. However, previous studies have not yet examined the role of these features in mature moral cognition. Using a battery of adult-appropriate cases (including vehicular and sexual assault, reckless behavior, and violations of etiquette and social contracts) we demonstrate that these features (...) also distinguish moral from conventional transgressions in mature moral cognition. Each hypothesized moral transgressions was treated as strongly and clearly immoral. However, our data suggest that although the majority of hypothesized conventional transgressions also form an obvious cluster, social conventions seem to lie along a continuum that stretches from mere matters of personal preference (e.g., getting tattoos or wearing black shoes with a brown belt) to transgressions that are treated as matters for legitimate social sanction (e.g., violating traffic laws or not paying your taxes). We use these findings to discuss issues of universality, domain-specificity, and the importance of using a well-studied set of moral scenarios to examine clinical populations and the underlying neural architecture of moral cognition. (shrink)

I argue for three central theses: ‘intuition’ is ambiguous, in material object metaphysics ‘intuition’ refers to pre-theoretical beliefs, and these pre-theoretical beliefs are generated by an innate physical reasoning system. I begin by outlining the relevant background discussions on the nature of intuitions and their role in philosophy to motivate the need for a more careful investigation of the meaning of ‘intuition’ and the role of intuitions in specific sub-disciplines of philosophy. In chapters one and two I argue that ‘intuition’ (...) is ambiguous between an inflationary and deflationary sense. In the inflationary sense, ‘intuition’ refers to a priori intellectual seemings with a special phenomenology, conceptual etiology, and modal content. In the deflationary sense, ‘intuition’ refers to beliefs or inclinations to believe. In chapter three I specifically examine the use of intuitions in material object metaphysics and conclude that in this sub-community ‘intuition’ is used in the deflationary sense to refer to pre-theoretical beliefs. Drawing from research on infant cognition, in the final chapter I argue that intuitions regarding material object metaphysics are those judgments that arise from an innate physical reasoning system. Based on this empirical observation, I argue that metaphysicians ought to give preference to abstract intuitions over intuitions regarding concrete cases because these abstract intuitions reflect the innate structure of our physical reasoning mechanisms. (shrink)