The book develops, defends, and applies a "Dual Scale" model of weighing reasons to resolve various issues in ethics. It tells you everything you ever wanted to know about weighing reasons and probably a lot of stuff you didn't want to know too. It addresses, among other things, what the general issue of weighing reasons is; what it is to weigh reasons correctly; whether reasons have more than one weight value (e.g., justifying, requiring, and/or commending weight); whether weight values are (...) context sensitive; how to tell what the weights of reasons are; how reasons for are related to reasons against; and how the weights of reasons aggregate. After addressing such issues, it explains a number of puzzling phenomena in ethics, such as the All or Nothing Problem, the normative significance of small improvements, and the intransitivity of the makes-it-permissible-to-act-against relation. (shrink)

Scale-based models of weighing reasons face challenges concerning the context sensitivity of weight, the aggregation of weight, and the methodology for determining what the weights of reasons are. I resolve these challenges.

How do multiple reasons combine to support a conclusion about what to do or believe? This question raises two challenges: How can we represent the strength of a reason? How do the strengths of multiple reasons combine? Analogous challenges about confirmation have been answered using probabilistic tools. Can reductive and nonreductive theories of reasons use these tools to answer their challenges? Yes, or more exactly: reductive theories can answer both challenges. Nonreductive theories, with the help of a result in confirmation (...) theory, can answer one, and there are grounds for optimism that they can answer the other. (shrink)

The metaphor of weighing reasons brings to mind a single (double-pan balance) scale. The reasons for φ go in one pan and the reasons for ~φ go in the other. The relative weights, as indicated by the relative heights of the two pans of the scale, determine the deontic status of φ. This model is simple and intuitive, but it cannot capture what it is to weigh reasons correctly. A reason pushes the φ pan down toward permissibility (has justifying weight) (...) only insofar as it pushes the ~φ pan up toward impermissibility (has requiring weight). Thus, Single Scale is committed to Single Proportion (first pass): all reasons have the same proportion of justifying and requiring weight. Many normative theories reject Single Proportion, and they are not thereby confused about how to weigh reasons. One can be mistaken about the weight of a reason without being confused about how reasons are to be weighed. Single Scale is problematic, not because it appeals to the image of a scale, but because it appeals to the image of a single scale. We need two scales to capture what it is to weigh reasons correctly. (shrink)

Situations are powerful: the evidence from experimental social psychology suggests that agents are hugely influenced by the situations they find themselves in, often without their knowing it. In our paper, we evaluate how situational factors affect our reasons-responsiveness, as conceived of by John Fischer and Mark Ravizza, and, through this, how they also affect moral responsibility. We argue that the situationist experiments suggest that situational factors impair, among other things, our moderate reasons-responsiveness, which is plausibly required for moral responsibility. However, (...) even though we argue that situational factors lower the degree of our reasons-responsiveness, we propose that agents remain moderately reasons-responsive to the degree required for moral responsibility. Nonetheless, those affected by situational factors are arguably less morally responsible than those who are not subject to similar situational factors. We further evaluate an understanding of reasons-responsiveness which relativizes reasons-responsiveness to agents’ circumstances. We argue that the situationist data do not warrant this kind of divergence from Fischer’s and Ravizza’s account. We conclude by discussing what situationist experiments tell us about our relationship to non-reasons. (shrink)

According to epistemic reductionism about practical reasons, facts about practical reasons can be reduced to facts about evidence for ought-judgements. We argue that this view misconstrues practical conflicts. At least some conflicts between practical reasons put us in a position to know that an action ϕ is optional, i.e. that we neither ought to perform nor ought to refrain from performing the action. By understanding conflicts of practical reasons as conflicts of evidence about what one ought to do, epistemic reductionism (...) fails to account for this. In conflict cases in which ϕ-ing is optional, epistemic reductionism suggests that we have equally strong evidence for and against assuming that we ought to ϕ, and thus cannot be in a position to know that it is not the case that we ought to ϕ. This is a serious flaw. (shrink)

This paper develops the Value-Based Theory of Reasons in some detail. The central part of the paper introduces a number of theoretically puzzling features of normative reasons. These include weight, transmission, overlap, and the promiscuity of reasons. It is argued that the Value-Based Theory of Reasons elegantly accounts for these features. This paper is programmatic. Its goal is to put the promising but surprisingly overlooked Value-Based Theory of Reasons on the table in discussions of normative reasons, and to draw attention (...) to a number of areas for fruitful further research. (shrink)

Situationism is, roughly, the thesis that normatively irrelevant environmental factors have a great impact on our behaviour without our being aware of this influence. Surprisingly, there has been little work done on the connection between situationism and moral luck. Given that it is often a matter of luck what situations we find ourselves in, and that we are greatly influenced by the circumstances we face, it seems also to be a matter of luck whether we are blameworthy or praiseworthy for (...) our actions in those circumstances. We argue that such situationist moral luck, as a variety of circumstantial moral luck, exemplifies a distinct and interesting type of moral luck. Further, there is a case to be made that situationist moral luck is perhaps more worrying than some other well-discussed cases of moral luck. (shrink)

We use normative reasons in a bewildering variety of different ways. And yet, as many recent theorists have shown, one can discern systematic distinctions underlying this complexity. This paper is a contribution to this project of constructive normative metaphysics. We aim to bring a black sheep back into the flock: the balancing model of weighing reasons. This model is threatened by a variety of cases in which distinct reasons overlap, in the sense that they do not contribute separate weight for (...) or against an option. Our response is to distinguish between derivative reasons and load-bearing reasons, only the latter of which contribute non-overlapping weight to an option. This distinction is close at hand for analyses of reasons in terms of the promotion of significant outcomes. But we also develop an account of this distinction for fundamentalist theories of normative reasons. (shrink)

This thesis is about what a normative reason is and how reasons relate to oughts. I argue that normative reasons are to be understood as relational properties of favouring or disfavouring. I then examine the question: What is the relation between reasons, so understood, and what we ought to do, believe, or feel? I argue that the relation is an explanatory one. We should explain what we ought to do in terms of reasons, and not the other way around. This (...) view faces a number of difficulties, in particular in accounting for supererogatory acts and the distinction between an action being required and an action being recommended. The analysis that I provide explains how we can solve these problems. In providing such an analysis, this thesis aims to be a contribution to the discussion of how we might elucidate the structure of what is sometimes called normativity. (shrink)