Online research in philosophy

If psychology requires a taxonomy that categorizes mental states according to their causal powers, the common sense method of individuating mental states (a taxonomy by intentional content) is unacceptable because mental states can have different intentional content, but identical causal powers. This difference threatens both the vindication of belief/desire psychology and the viability of scientific theories whose posits include intentional states. To resolve this conflict, Fodor has proposed that for scientific purposes mental states should be classified by their narrow content. Such a classification is supposed to correspond to a classification by causal powers. Yet a state's narrow content is also supposed to determine its (broad) intentional content whenever that state is 'anchored' to a context. I examine the two most plausible accounts of narrow content implicit in Fodor's work, arguing that neither account can accomplish both goals.

Fodor’s Informational Semantics states that the content of a representation depends on the counterfactual relation between the representation and the represented. However, his theory suffers from the psychological explanation problem and the indeterminacy problem raised by twin cases. In response to these problems, Fodor has introduced narrow content and a mixed theory of content that combines a historical account with the counterfactual account. In The Elm and the Expert, he drops both of them for the reason that twin cases are nomologically impossible. I argue that Fodor underestimates the persistence of the problems raised by twin cases. Consequently, I contend that Fodor has to keep both the narrow content and the historical account.

In his latest book, The Elm and the Expert (1994), Fodor notoriously rejects the notion of narrow content as superfluous. He envisions a scientific intentional psychology that adverts only to broad content properties in its explanations. I argue that Fodor's change in view is only apparent and that his previous position (1985-1991) is extensionally equivalent to his "new" position (1994). I show that, despite what he says narrow content is for in his (1994), Fodor himself has previously never appealed to the notion of narrow content in explaining Frege cases and cases involving the so-called deferential concepts. And for good reason: his notion of narrow content (1985-91) couldn't explain them. The only apparent change concerns his treatment of Twin Earth cases. However, I argue that the notion of broad content that his purely informational semantics delivers is, in some interesting sense, equivalent to the mapping notion of narrow content he officially gave up. For his pure informational semantics fails to avoid assigning disjunctive content to twins, since nomic covariations take care not only actual but also counterfactual contexts into account. I show that none of the attempts made by Fodor to block this consequence of his theory works. The present notion of broad content he now operates with is therefore in a position to take over all the important jobs that his previous notion of narrow content could do.

Jerry Fodor argues for individualism and for narrow content by way of rejecting an argument based on the conceptual connections between reason-properties and action-properties. In this paper I show that Fodor’s argument fails. He is right that there is a New Logical Connections Argument to be made, and that it does show that water thoughts and XYZ thoughts are not different causal powers with respect to intentional properties of behaviors. However, the New Logical Connections Argument also shows that they are not causal powers at all with respect to intentional properties ofbehaviors, and so Fodor’s argument to individualism and narrow content is unsound. Along the way I show that Fodor’s version of the New Logical Connections argument has serious problems of overkill.

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.