Analyzing causation in terms of Woodward's interventionist theory and describing the structure of the world in terms of causal powers are usually regarded as quite different projects in contemporary philosophy. Interventionists aim to give an account of how causal relations can be empirically discovered and described, without committing themselves to views about what causation really is. Causal powers theorists engage in precisely the latter project, aiming to describe the metaphysical structure of the world. In this paper, I argue that interventionism (...) can benefit from incorporating considerations about causal powers. I describe a previously undiscussed problem for Woodward's definition of an intervention variable that arises when interventionist causal models include disjunctive variables. This problem is solved not by excluding disjunctive (or logically compound) variables per se, but by excluding variables whose values represent disjunctions of too different causal powers. This suggests that interventionism and causal powers theories may be less distant from each other than is often assumed. (shrink)

The paper critiques two recent suggestions, by Lei Zhong and Thomas Kroedel, about how to apply the interventionist theory of causation to cases where supervenient properties, particularly mental properties, are involved. According to both suggestions, we should hold variables corresponding to supervenient properties fixed when intervening on the subvenient properties with respect to a putative effect variable and vice versa. The paper argues that both suggestions are problematic. Zhong’s suggestion ultimately requires ad hoc exemptions from the holding-fixed requirement. Kroedel’s suggestion (...) entails severe constraints on the construction of causal models. Overall, retaining the holding-fixed requirements of interventionism for cases of supervenient properties comes at a significant price. (shrink)