Functionalism and Mental Causation

The aim of the present work is to demonstrate that physicalism and a priori knowledge are epistemologically incompatible. The possibility of a priori knowledge on physicalism will be considered in the light of Edmund Gettier’s insight regarding knowledge. In the end, it becomes apparent that physicalism entails an unavoidable disconnect between a priori beliefs and their justificatory grounds; thus precluding the possibility of a priori knowledge. Consequently, a priori knowledge and physicalism are epistemologically incompatible.

Functionalist theories have been proposed for just about everything: mental states, dispositions, moral properties, truth, causation, and much else. The time has come for a functionalist theory of nothing. Or, more accurately, a role functionalist theory of those absences that are causes and effects.

This dissertation aims to examine whether John Searle’s biological naturalism is a more viable alternative to current physicalist and functionalist positions in dealing with the issue of free will. Thus, my strategy is to identify the assumptions of these lines of thought and their philosophical consequences. In order to accomplish this goal the concept of intrinsic intentionality is taken as a guide. I begin by defining what is meant by free will and go on to broadly characterize physicalist and functionalist (...) positions in philosophy of mind. Then, I go on to show how the question of free will arises and can be crucial to such currents of thought. Subsequently, I summarize the biological naturalist position (especially regarding the ontology of consciousness and the question of intentionality) and oppose it to physicalism and functionalism in order to examine the possibility of free will. In this opposition, each theory is decomposed into its main tenets so that they can be critically analyzed. In this analysis, it appears that free will does not seem to find any room in the scenario presented by physicalism and functionalism. It is argued that Searlean biological naturalism is able to explain – better than the other two positions – how free action can be motivated by something that is external to the mental state which is itself performing the action. I then evaluate the ethical implications of these findings, articulating the issues of intrinsic intentionality, free will, strong artificial intelligence in order to conclude that current machines cannot be assigned moral responsibility, since they are not capable of intrinsic intentionality. Then, I argue for the evolutionary origin of intentionality and therefore morality. Finally, I argue that neuroscience does not eliminate moral responsibility since it does not prove that free will is an illusion, i.e., that this branch of science does not contradict John Searle’s biological naturalism. (shrink)

Given their physical realization, what causal work is left for functional properties to do? Humean solutions to the exclusion problem (e.g. overdetermination and difference-making) typically appeal to counterfactual and/or nomic relations between functional property-instances and behavioural effects, tacitly assuming that such relations suffice for causal work. Clarification of the notion of causal work, I argue, shows not only that such solutions don't work, but also reveals a novel solution to the exclusion problem based on the relations between dispositional properties at (...) different levels of mechanism, which involves three central claims: (i) the causal work of properties consists in grounding dispositions, (ii) functional properties are dispositions, and (iii) the dispositions of mechanisms are grounded in the dispositions of their components. Treating functional mental properties as dispositions of components in psychological mechanisms, I argue that such properties do the causal work of grounding agent-level dispositions. These dispositions, while ultimately grounded in the physical realizers of mental properties, are indirectly so grounded, through a hierarchy of grounding relations that extends upwards, of necessity, through the mental domain. (shrink)

This is a critical study of Sydney Shoemaker's, Physical Realization (Oxford University Press, 2007). It focuses on (i) the relationship between his subset theory of realization and the higher-order property theory of realization, and (ii) his attempt to solve the problem of mental causation.

Attempts to provide a thoroughly naturalized reading of the doctrine of karma have raised important issues regarding its role in the overall economy of the Buddhist soteriological project. This paper identifies some of the most problematic aspects of a naturalized interpretation of karma: (1) the strained relationship between retributive action and personal identity, and (2) the debate concerning mental causation in modern reductionist accounts of persons. The paper explores the benefits of a phenomenological approach in which reductionist accounts of karma (...) are replaced with accounts that interpret virtuous and compassionate actions as emergent properties of consciousness that can be further enhanced through socialization. (shrink)

The recent literature on mental causation has not been kind to nonreductive, materialist functionalism (‘functionalism’, hereafter, except where that term is otherwise qualified). The exclusion problem2 has done much of the damage, but the epiphenomenalist threat has taken other forms. Functionalism also faces what I will call the ‘problem of metaphysically necessary effects’ (Block, 1990, pp. 157-60, Antony and Levine, 1997, pp. 91-92, Pereboom, 2002, p. 515, Millikan, 1999, p. 47, Jackson, 1998, pp. 660-61). Functionalist mental properties are individuated partly (...) by their relation to the very effects those properties’ instantiations are thought to cause. Consequently, functionalist causal generalizations would seem to have the following problematical structure: The state of being, among other things, a cause of e (under such-andsuch conditions) causes e (under those conditions).3 The connection asserted lacks the contingency one would expect of a causal generalization. Mental states of the kind in question are, by metaphysical necessity, causes of e; any state that does not cause e is thereby a different kind of state. Yet, a mental state’s being the sort of state it is must play some causal role if functionalism is to account for mental causation.4 In what follows, I first articulate more fully the problem of metaphysically necessary effects. I then criticize three functionalist attempts to solve the problem directly. Given the failure of functionalist efforts to meet the problem head-on, I consider less direct strategies: these involve formulating functionalism or its causal claims in such a way that they appear not to generate the problem of metaphysically necessary effects. I argue against these indirect solutions, in each case concluding either that the problem still arises or that avoiding it requires the adoption of an unorthodox form of functionalism (itself a surprising result). In the final.. (shrink)

This paper presents an irreducibly inductive argument for physicalism based on the causal closure of the physical (for which it argues), and defends it against various detractors.

The origins and development of the problem of mental causation are outlined. The underlying presuppositions which give rise to the problem are identified. Possible strategies for solving, or dissolving the problem are examined.

The Problems of Mental Causation. Functionalism in the philosophy of mind identifies mental states with their dispositional connections with other mental states, perceptions and actions. Many theories of the mind have sailed under the Functionalist flag. But what I take to be essential to Functionalism is that mental states are individuated causally: the reality of mental states depends essentially on their causal efficacy.