Wayne Martin Arne Naess Alastair Hannay Matthew Bennett Jeffrey Byrnes Naomi van Steenbergen Paul M. Churchland, University of California, San Diego Stephen R. L. Clark, University of Liverpool Hub...

Editor Wayne Martin Founded by Arne Naess Editor Emeritus Alastair Hannay Editorial Assistants Matthew Bennett Jeffrey Byrnes William Meakins Editorial Board Paul M. Churchland, University of Calif...

It is a widely-held thesis that the content of intentions can be characterized in terms of the truth of a proposition. In this paper I try to reject this idea. First, I argue that, at least for ordinary cases of intention, there cannot be any proposition such that the intention is fulfilled if, and only if, such a proposition is true. After that, I propose an alternative account for the content of intentions. I argue that this content must ultimately involve (...) a particular acting by the agent. (shrink)

I discuss the issue whether the kind of nonobservational knowledge about our intentional actions that can be detected in ideal, paradigmatic cases can also be present when the agent is not confident enough to believe she will succeed in fulfilling her intention. It might be tempting to assume that if the agent’s confidence about what she is doing is relevantly increased after some observation, then the acquired practical knowledge has to be observational. I argue that this is a wrong reaction. (...) On the one hand, I defend that practical knowledge is non-perceptual even in those cases. On the other hand, I insist that the rejection of certain common assumptions about the difference between those cases and the more ideal ones gives us a better understanding of what is going on in the latter. (shrink)

ABSTRACTA widespread view in the philosophy of mind and action holds that intentions are propositional attitudes. Call this view ‘Propositionalism about Intention’. The key alternative holds that intentions have acts, or do-ables, as their contents. Propositionalism is typically accepted by default, rather than argued for in any detail. By appealing to a key metaphysical constraint on any account of intention, I argue that on the contrary, it is the Do-ables View which deserves the status of the default position, and Propositionalism (...) which bears the burden of proof. I go on to show that this burden has not been met in the literature. (shrink)

Blindsight is the term commonly used to describe visually guided behaviour elicited by a stimulus falling within the scotoma (blind area) caused by a lesion of the striate cortex. Such is normally held to be unconscious and to be mediated by subcortical pathways involving the superior colliculus. Blindsight is of considerable theoretical importance since it suggests that destriate man is more like destriate monkey than had been previously believed and also because it supports the classical notion of two visual systems. (...) It is also of potential clinical importance, since it has been claimed recently that systematic practice in blindsight can lead to the recovery of normal visual function in patients with cortical lesions. From a review of the literature it is concluded that all of the phenomena of blindsight can be attributed either to light scatter into unimpaired parts of the visual field or to residual vision resulting from spared striate cortex. The possible contribution f other factors is also considered. It is concluded that blindsight studies have generally failed to control for such nonblindsight interpretations partly because of poor methodology and partly because of difficulties in defining the term. (shrink)

According to a widely accepted constraint on the content of intentions, here called the exclusivity constraint, one cannot intend to perform another agent’s action, even if one might be able to intend that she performs it. For example, while one can intend that one’s guest leaves before midnight, one cannot intend to perform her act of leaving. However, Deborah Tollefsen’s (2005) account of joint activity requires participants to have intentions-in-action (in John Searle’s (1983) sense) that violate this constraint. I argue (...) that the exclusivity constraint should not be accepted as an unconditional constraint on the contents of intentions-in-action: one may intend to perform a basic action that belongs both to oneself and to another agent. Based on the phenomenology of tool use, I first argue that intentions-in-action of one’s basic actions may be technologically extended, meaning that their contents are not restricted to concern the agent’s bodily movements. In analogy with this, I then argue that the phenomenology of some skillful joint activities supports the idea that one’s basic intentions-in-action may be socially extended, in violation of the widely accepted exclusivity constraint. Tollefsen’s account is specifically constructed to account for the joint activities of infants and toddlers who lack the capacity to think of others as planning agents and grasp their plan-like intentions (a capacity required by Michael Bratman’s (1992, 1993, 2009a, b) influential account of joint activity). At the end of the paper, I raise some doubts regarding the extent to which infants and toddlers have socially extended intentions-in-action. (shrink)

Popper gives the concept of social situation the role of key term in the method ology of situational analysis. The important characteristics of the social situation are aims and knowledge, which are attributed to the actor and are part of the situation. Furthermore, the elements of the situation create or are, as social institutions, obstacles to the actor. But more complex situations exist which here are called actor specific situations and are much more structured by the actor. The aims and (...) knowledge of the actors vary widely, so they cannot be attributed to the actors without a serious loss of information. The elements have social meanings and meanings which are ascribed to them by the actors. The concept of dual methodology tries to grasp these complex situations for the purpose of empirical research by combining causal explanation of analytical methodology with intentional explanation of a methodology of understanding. The interface between these methodologies is formed by the concept of generative mecha nisms. These are part of the causal theory as well as data gathered for the intentional explanation. The ideal result of research is achieved if the hypothesis cannot be rejected and the two kinds of generative mechanisms coincide. In this case, the hypothesis is a proven causal statement. Finally, the aptitude of the interpretative methodology for gathering the generative mechanisms is dis cussed. (shrink)

This essay is a sustained attempt to bring new light to some of the perennial problems in philosophy of mind surrounding phenomenal consciousness and introspection through developing an account of sensory and phenomenal concepts. Building on the information-theoretic framework of Dretske (1981), we present an informational psychosemantics as it applies to what we call sensory concepts, concepts that apply, roughly, to so-called secondary qualities of objects. We show that these concepts have a special informational character and semantic structure that closely (...) tie them to the brain states realizing conscious qualitative experiences. We then develop an account of introspection which exploits this special nature of sensory concepts. The result is a new class of concepts, which, following recent terminology, we call phenomenal concepts: these concepts refer to phenomenal experience itself and are the vehicles used in introspection. On our account, the connection between sensory and phenomenal concepts is very tight: it consists in different semantic uses of the same cognitive structures underlying the sensory concepts, such as the concept of red. Contrary to widespread opinion, we show that information theory contains all the resources to satisfy internalist intuitions about phenomenal consciousness, while not offending externalist ones. A consequence of this account is that it explains and predicts the so-called conceivability arguments against physicalism on the basis of the special nature of sensory and phenomenal concepts. Thus we not only show why physicalism is not threatened by such arguments, but also demonstrate its strength in virtue of its ability to predict and explain away such arguments in a principled way. However, we take the main contribution of this work to be what it provides in addition to a response to those conceivability arguments, namely, a substantive account of the interface between sensory and conceptual systems and the mechanisms of introspection as based on the special nature of the information flow between them. (shrink)

What psychological and philosophical significance should we attach to recent efforts at computer simulations of human cognitive capacities? In answering this question, I find it useful to distinguish what I will call "strong" AI from "weak" or "cautious" AI. According to weak AI, the principal value of the computer in the study of the mind is that it gives us a very powerful tool. For example, it enables us to formulate and test hypotheses in a more rigorous and precise fashion. (...) But according to strong AI, the computer is not merely a tool in the study of the mind; rather, the appropriately programmed computer really is a mind, in the sense that computers given the right programs can be literally said to. (shrink)

According to one influential philosophical view of human agency, for an agent to perform an action intentionally is essentially for her to manifest a kind of self-knowledge: An agent is intentionally φ-ing if and only if she has a special kind of practical and non-observational knowledge that this is what she is doing. I here argue that this self-knowledge view faces serious problems when extended to account for intentional actions performed by several agents together as a result of a joint (...) decision. This suggests that practical and non-observational knowledge is not essential to intentional action as such, since a theory of intentional action ought to be able to make sense of such paradigm cases of joint intentional action as well as cases of singular intentional action. Existing attempts to extend the self-knowledge view to joint intentional action face an unfortunate trilemma. These attempts must (i) require that participants have non-observational knowledge of each other’s non-observational knowledge, which in turn requires that the participants are either really one and the same agent, or that they are, for all relevant purposes, clones of each other; (ii) limit their explanatory scope to intentional actions performed by groups with a single decision maker at the top of an organisational hierarchy, which arguably are not really shared or jointly performed; or (iii) require that the intention of the group is the result of a public representational act that the group members will have observational knowledge of in a way that is incompatible with a core commitment of the self-knowledge view. I argue that each of these options is unacceptable given a self-knowledge view of intentional action. (shrink)

Experimental studies investigating the contribution of conscious intention to the generation of a sense of agency for one’s own actions tend to rely upon a narrow definition of intention. Often it is operationalized as the conscious sensation of wanting to move right before movement. Existing results and discussion are therefore missing crucial aspects of intentions, namely intention as the conscious sensation of wanting to move in advance of the movement. In the present experiment we used an intentional binding paradigm, in (...) which we distinguished between immediate intention, as usually investigated, and longer standing intention. The results showed that the binding effect was significantly enhanced for distal intentions compared to proximal intentions, indicating that the former leads to stronger sense of agency. Our finding provides empirical support for a crucial distinction between at least two types of intention when addressing the efficacy of conscious intentions. (shrink)

This paper explores R. W. Sperry's view that consciousness is ?causally? effective in directing voluntary human behaviour. This view, formulated in the course of his split brain research, presupposes an earlier theory that motor behaviour is the sole output of the brain and that mental phenomena were developed for regulation of overt response. His view of the ?causal? effectiveness of consciousness is shown to be based on a theory of emergent properties like that of Bunge. It is also shown that (...) Sperry, like Bunge, is a materialist; appearances to the contrary are due to occasional use of standard terms such as ?materialism? and ?interaction? in unusual senses. It is argued, with specific reference to Chisholm and Searle, that Sperry's hypothesis is helpful towards elucidating the structure and dynamics of action. It is also argued that it is not, as Sperry thinks, a consequence of his position that moral values are part of brain science. (shrink)