Jennifer McKitrick

According to most views of dispositions or powers, they have “triggers” or activation conditions. Fragile things break when they are struck; explosive things explode when ignited. The notion of an activation event, or “trigger,” is central to the notion of a disposition. Dispositions are defined not only by their manifestations, but also by their triggers. Not everyone who grumbles and complains counts as irritable—just those who do so with little inducement. Not everything that can be broken counts as fragile—just things that can be broken with relatively little force. The idea that triggers are part of the identity conditions of powers is evident in conditional analyses of powers, and even in the claim that certain conditionals are typically true of things with certain powers. The antecedent of the conditional corresponds to a trigger of that power: “If it’s struck, it will break” is true of a fragile thing, and “being struck” is the trigger. In this chapter, I explore the nature of activation events and their relation to the powers they activate. In particular, I will consider what triggers would look like if all properties were powers, as the dispositional monist or pandispositionalist tells us they are. While many have expressed worries about manifestations involving instantiations of only dispositional properties, it is also worth noting that, on a pandispositionalist scenario, the activation event must be equally dispositional. If all properties are powers, it seems that a triggering event must be an acquisition of a power. But how does something acquiring a power activate another power to produce its manifestation? I suggest and evaluate possible answers. I will argue that, as with the case of manifestations, a vicious regress threatens the pandispositionalist picture of power activation. I go on to consider several possible pandispositionalist responses

According to some philosophers, gender is a social role or pattern of behavior in a social context. I argue that these accounts have problematic implications for transgender. I suggest that gender is a complex behavioral disposition, or cluster of dispositions. Furthermore, since gender norms are culturally relative, one’s gender is partially constituted by extrinsic factors. I argue that this has advantages over thinking of gender as behavior, and has the added advantage of accommodating the possibility of an appearance/reality dissonance with respect to one’s gender

Reid offers an under-appreciated account of the primary/secondary quality distinction. He gives sound reasons for rejecting the views of Locke, Boyle, Galileo and others, and presents a better alternative, according to which the distinction is epistemic rather than metaphysical. Primary qualities, for Reid, are qualities whose intrinsic natures can be known through sensation. Secondary qualities, on the other hand, are unknown causes of sensations. Some may object that Reid's view is internally inconsistent, or unacceptably relativistic. However, a deeper understanding shows that it is consistent, and relative only to normal humans. To acquire this deeper understanding, one must also explore the nature of dispositions, Reid's rejection of the theory of ideas, his distinction between sensation and perception, and his distinction between natural and acquired perceptions

Dispositionality and causation are both modal concepts which have implications not just for how things are, but for how they will be or, in some sense, must be. Some philosophers are suspicious of modal concepts and would like to make do with fewer of them.1 But what are our reductive options, and how viable are they? In this paper, I try to shut down one option: I argue that dispositions are not reducible to causes. In doing so, I try not to prejudice the issue by assuming a particular analysis of causation or dispositions. I make the following minimal assumptions about dispositions: they are properties of objects which have characteristic manifestations that occur in certain circumstances, and an object can have a disposition outside of the circumstances of manifestation and hence without the manifestation occurring. I think of causation primarily as a relation between events, though there can be true causal generalizations, and objects might be causes. In Section 1, I will try to clarify what it means for one kind of thing to reduce to another. I will then argue in Section 2 that dispositions do not conceptually reduce to causes, and in Section 3 that dispositions do not metaphysically reduce to causes. In Section 4, I explore other reductive possibilities, in particular that causes reduce to dispositions