The Properties of Mental Causation

Recent discussions of mental causation have focused on three principles: (1) Mental properties are (sometimes) causally relevant to physical effects; (2) mental properties are not physical properties; (3) every physical event has in its causal history only physical events and physical properties. Since these principles seem to be inconsistent, solutions have focused on rejecting one or more of them. But I argue that, in spite of appearances, (1)–(3) are not inconsistent. The reason is that 'properties' is used in different senses in the principles. In (1) and (3), 'properties' should be read as 'tropes' (properties here are particulars), while in (2) 'properties' should read as 'types' (properties here are universals or classes). Although mental types are distinct from physical types, every mental trope is a physical trope. This allows mental properties to be causally relevant to physical effects without violating the closed character of the physical world.     

Parallelism, Interactionism, and Causation

One may gather from the arguments of two of the last papers¹ published before his death that J. L. Mackie held the following three theses concerning the mind/body problem:

• (1)

  There is a distinct realm of mental properties, so a dualism of properties at least is true and materialism false.
• (2)

  All bodily movements probably have sufficient causes in physical facts and properties, but mental facts and properties are not causally irrelevant to human action.
• (3)

  At the same time, the view that there are not sufficient causes in the physical realm alone for all bodily movements has no good and adequate empirical or philosophical reasons against it.

In this paper I wish (1) to register my strong agreement with the first thesis by way of simply taking it for granted, (2) to defend the second thesis in greater detail and in a manner somewhat different from Mackie's, and (3) to show the third thesis to be false.     

Perception, Causation, and Supervenience

What relation between an experience and a physical object makes the experience a perception of the object?¹ One common answer is that it is a certain kind of causal relation. The idea is that to perceive an object is just to undergo an experience appropriately caused by the object. This answer is incorrect. The reason is that perceiving an object does not supervene on the causal connection the object bears to the perceiver's experience. Whether or not a person perceives an object depends, in part, on conditions that could obtain or fail to obtain without variation in the causal processes (if any) by which the object causes the person's experience. In what follows, I explain and defend these claims.     

Causation, coincidence, and commensuration

What does it take to solve the exclusion problem? An ingenious strategy is Stephen Yablo’s idea that causes must be commensurate with their effects. Commensuration is a relation between events. Roughly, events are commensurate with one another when one contains all that is required for the occurrence of the other, and as little as possible that is not required. According to Yablo, one event is a cause of another only if they are commensurate. I raise three reasons to doubt that this account solves the exclusion problem successfully. First, it leaves a mystery about what determines a particular’s causal capacities. Second, because there are two ways of construing coincidence between particulars, a dilemma arises: either the solution to the exclusion problem is threatened, or the account of coincidence loses an attractive feature concerning ontological economy. Third, even if we assume the commensuration constraint, a plausible principle about overdetermination seems to regenerate the exclusion problem.     

Mental Causation and the Metaphysics of Causation

The paper argues for four claims: (1) The problem of mental causation and the argument for its solution in terms of the identity of mental with physical causes are independent of the theory of causation one favours. (2) If one considers our experience of agency as described by folk psychology to be veridical, one is committed to an anti-Humean metaphysics of causation in terms of powers that establish necessary connections. The same goes for functional properties in general. (3) A metaphysics of causation in terms of powers is compatible with physics. (4) If combined with the argument for mental causes being identical with physical causes, that metaphysics leads to a conservative reductionism.     

Cause,Effect, And Fake Causation

The possibility of apparently negative causation has been discussed in a number of recent works on causation, but the discussion has suffered from beingscattered. In this paper, the problem of apparently negative causation and its attemptedsolutions are examined in more detail. I discuss and discard three attempts that have beensuggested in the literature. My conclusion is negative: Negative causation shows that thetraditional cause & effect view is inadequate. A more unified causal perspective is needed.     

Interpretation,Reasons, and Facts

Donald Davidson argues that his interpretivist approach to meaning shows that accounting for the intentionality and objectivity of thought does not require an appeal, as John McDowell has urged it does, to a specifically rational relation between mind and world. Moreover, Davidson claims that the idea of such a relation is unintelligible. This paper takes issue with these claims. It shows, first, that interpretivism, contra Davidson's express view, does not depend essentially upon an appeal to a causal relation between events in the world and speakers' beliefs. Second, it shows that interpretivism essentially, if implicitly, depends upon interpreters' appealing to facts taken in in perception, and that such facts are suited to provide a rational connection between mind and world. The paper then argues that none of Davidson's legitimate epistemological arguments tell against the idea that experience, in the form of the propositional contents of perception, can play a role in doxastic economy. Finally, it argues that granting experience such a role is consistent with Davidson's coherentist slogan that nothing can count as a reason for holding a belief except another belief.     

Physicalism,Emergence and Downward Causation

The development of a defensible and fecund notion of emergence has been dogged by a number of threshold issues neatly highlighted in a recent paper by Jaegwon Kim. We argue that physicalist assumptions confuse and vitiate the whole project. In particular, his contention that emergence entails supervenience is contradicted by his own argument that the ‘microstructure’ of an object belongs to the whole object, not to its constituents. And his argument against the possibility of downward causation is question-begging and makes false assumptions about causal sufficiency. We argue, on the contrary, for a rejection of the deeply entrenched assumption, shared by physicalists and Cartesians alike, that what basically exists are things (entities, substances). Our best physics tells us that there are no basic particulars, only fields in process. We need an ontology which gives priority to organization, which is inherently relational. Reflection upon the fact that all biological creatures are far-from-equilibrium systems, whose very persistence depend upon their interactions with their environment, reveals incoherence in the notion of an ‘emergence base’.