Online research in philosophy

I argue that intentional psychology does not stand in need of vindication by a lower-level implementation theory from cognitive science, in particular the representational theory of mind (RTM), as most famously Jerry Fodor has argued. The stance of the paper is novel in that I claim this holds even if one, in line with Fodor, views intentional psychology as an empirical theory, and its theoretical posits as as real as those of other sciences. I consider four metaphysical arguments for the idea that intentional psychological states, such as beliefs, must be seen as requiring in-the-head mental representations for us to be able to understand their characteristic causal powers and argue that none of them validly generate their desired conclusions. I go on to argue that RTM, or some computational version thereof, is not motivated by appeal to the nature of cognitive science research either. I conclude that intentional psychology, though an empirical theory, is autonomous from details of lower level mechanism in a way that renders RTM unwarranted.

Philosophers of mind have recently sought to establish a theoret- ical use for nonconceptual content. Although there is disagreement about what nonconceptual content is supposed to be, this much is clear. A state with nonconceptual content is mental. Hence, while one may deny that refrigerators and messy rooms have conceptual capacities, their states, as physical and not mental, do not have nonconceptual content. A state with nonconceptual content is also intentional, which is to say that it represents a feature of the world for a subject. It may be tempting to think of qualitative states as having nonconceptual content since they can be experienced by indi- viduals independently of their possession of the requisite concepts, e.g. someone could experience pains, itches or tingles without possessing the concept pain, itch or tingle. But on such a view, one would have to assume that qualitative states are representational since mental states cannot be candidates for nonconceptuality unless they have intentional properties.2.

In everyday life, we typically explain what people do by attributing mental states such as beliefs and desires. Such mental states belong to a class of mental states that are _intentional_, mental states that have content. Hoping that Johnny will win, and believing that Johnny will win are of course rather different mental states that can lead to very different behaviour. But they are similar in that they both have the same content : what is being hoped for and believed is the very same thing. According to the thesis of externalism that has been defended most notably by Hilary Putnam and Tyler Burge, not all of the contents of our mental states are determined by our intrinsic properties. Instead, the contents of our beliefs and desires are often determined in part by our relations to the environment. They are, so to speak, "wide" contents that are "not in our heads." Although externalism is accepted by most philosophers, many have argued that mental states with wide contents must also have a kind of content wholly determined by the intrinsic properties of the individuals who are in those states. This kind of content is called "narrow content". The aim of this paper is to distinguish between three rather different motivations for postulating narrow content. I argue that, given a certain conception of narrow content that I shall explain below, none of these three motivations succeed in establishing the existence of narrow content.

Jerry Fodor now holds (1990) that the content of mental state types opaquely taxonomized (de dicto content: DDC) is determined by the 'orthographical' syntax + the computational/functional role of such states. Mental states whose tokens are both orthographically and truth-conditionally identical may be different with regard to the computational/functional role played by their respective representational cores. This make them tantamount to different contentful states, i.e. states with different DDCs, insofar as they are opaquely taxonomized. Indeed they cannot both be truthfully ascribed to a single subject at the same time. Some years ago (1987), Fodor postulated a notion of mental content which also went beyond that of a mental state's truth-conditions. States whose tokens differ in their truth-conditions, or broad content, might, he claimed, still share a narrow content (NC), which was causally responsible for the shared behavior of the subjects of these states. For instance, two molecularly identical individuals, living in environments in all respects the same, except for the chemical substance of the phenomenically indistinguishable liquids filling their respective lakes and rivers, would behave similarly when having truth-conditionally different thoughts regarding those liquids. According to Fodor, this sameness of behavior was causally dependent on the sameness of the NC of the two individuals' truth-conditionally different thoughts. Now, this way of individuating mental states is still of interest for semantics. Indeed, NC allows one contextually to fix the broad content of a mental state token. Echoing Kaplan's notion of character,1 Fodor explained NC as a function that mapped contexts (of thought) onto broad contents. NC was thus invoked by Fodor mainly in order to account for sameness of intentional behavior. But DDC also plays a role in explaining intentional behavior, precisely by explaining why a subject whose thought-tokens have identical truthconditions may behave differently..

Recent philosophy of psychology has seen the rise of so-called "dual-component" and "two-dimensional" theories of mental content as what I call a "Middle Way" between internalism (the view that contents of states like belief are "narrow") and externalism (the view that by and large, such contents are "wide"). On these Middle Way views, mental states are supposed to have two kinds of content: the "folk-psychological" kind, which we ordinarily talk about and which is wide; and some non-folk-psychological kind which is narrow. Jerry Fodor is responsible for one of the most influential arguments that we need to believe in some such non-folk-psychological kind of content. In this paper I argue that the ideas behind Fodor's premises are mutually inconsistent - so it would be irrational to believe in a Middle Way theory of mental content no matter how many of Fodor's premises you find plausible. Common opinion notwithstanding, we have to choose between internalism and externalism, full-stop.

What we do, intentionally, depends upon the intentional contents of our thoughts. For about ten years Fodor has argued that intentional behavior causally depends upon the narrow intentional content of thoughts (not broad). His main reason is a causal powers argument—brains of individuals A and B may differ in broad content, but, if A and B are neurophysically identical, their thoughts cannot differ in causal power, despite differences in broad content. Recently Fodor (Fodor, 1991) presents a new 'modal' version of this causal powers argument. I argue that Fodor's argument (in old or new dress) is a non sequitur. It neither establishes the existence of narrow content nor the need for a content other than broad content to explain intentional behavior.