Online research in philosophy

Perspectivalism is a semantic theory according to which the contents of utterances and mental states (perhaps of a particular kind) have a truth-value only relative to a particular perspective (or standard) determined by the context of the speaker or bearer of the mental state. I have defended this view for epistemic terms, moral terms and predicates of personal taste elsewhere (Brogaard 2008a, 2008b, forthcoming). The main aim of this paper is to defend perspectivalism about color perception and color discourse. The content of color perception and color discourse, I will argue, has a truth-value only relative to a centered world containing an appropriate viewing condition and the perceiver, or a perceiver that is deferred to.

Roderick Chisholm appears to agree with <span class='Hi'>Kant</span> on the question of the existence of synthetic a priori knowledge. But Chisholm’s conception of the a priori is a traditional Aristotelian conception and differs markedly from <span class='Hi'>Kant</span>’s. Closer scrutiny reveals that their agreement on the question of the synthetic a priori is merely verbal: what <span class='Hi'>Kant</span> meant to affirm, Chisholm denies. Curiously, it looks as if Chisholm agreed on all substantive issues with the empiricist rejection of <span class='Hi'>Kant</span>’s synthetic a priori. In the end, it turns out that Chisholm disagrees with empiricism and Kantianism over a fundamental question: whether mere understanding of the contents of our thoughts must always remain within the circle of our own ideas or can provide us with genuine knowledge of matters of fact.

Attitude reports are reports about people’s states of mind. They are reports about what people think, believe, know, know a priori, imagine, hate, wish, fear, and the like. So, for example, I might report that s knows p, or that she imagines p, or that she hates p, where p specifies the content to which s is purportedly related. One lively current debate centers around the question of what sort of specification is involved when such attitude reports are successful. Some hold that it is specification of the precise content of a mental state; others hold that it is specification of the content of a mental state only relative to a mode of presentation; yet others hold that it is merely a description or characterization of the content of a mental state. After providing a brief introduction to the traditional debate on attitude reports, this entry argues that for certain kinds of knowledge reports and for so-called de re attitude reports, descriptive theories emerge as the most plausible. The entry concludes with a discussion of how the characterizing relation between attitude reports and mental states might be construed.

Seeking whether our perception produces knowledge which is not only relative or subjective perspective on things, is to be engaged in the realist/anti-realist debate regarding perception. In this article I pursue the naturalistic approach according to which the question whether perception delivers objective knowledge about the external world is inseparable from empirical investigation into mechanisms of perception. More precisely, I have focused on the dual aspect theory of perception, one of the most influential recent theories of perception which unifies two traditionally opposite approaches to perception: ecological and constructivist. I have tried to show that the dualistic model of human vision does not support the majority of realist theses aimed at non-relativism, but supports only pragmatic realism about observational reports (dorsal system) and the moderate realism about observational reports (ventral system).

Questions about perception remain some of the most difficult and insoluble in both epistemology and the philosophy of mind. Perception provides a highly accessible introduction to the area, exploring the philosophical importance of those questions by re-examining the sense-datum theory, once the most popular theory of perception. Howard Robinson surveys the history of arguments for and against the sense-datum theory, from Descartes to Husserl. Robinson contends that the objections to the theory, particularly Wittgenstein's attack on privacy and those of the physicalists, have been unsuccessful. He argues for returning to the theory in order to understand perception. In doing so, he seeks to overturn a consensus that has dominated the philosophy of perception for nearly half a century.

Doctors must now take a fifth vital sign from their patients: pain reports. I use this as a case study to discuss how different schools of psychology (introspectionism, behaviorism, cognitive psychology) have treated verbal reports about the contents of consciousness. After examining these differences, I suggest that, with new methods of mapping data about neurobiological states with behavioral data and with verbal reports about conscious experience, we should reconsider some of the introspectionists' goals and methods. I discuss examples from cognitive psychology, including pain researchers' attempts to develop self-reports of pain so that they can be, like other vital signs, reliable indicators of internal states.

A number of philosophers are committed to the view that sense experiences, in so far as they have contents, have propositional contents, but this is more often tacitly accepted than argued for in the literature. This paper explains the propositional account and presents a basic case in support of it in a simple and straightforward way which does not involve commitment to any specific philosophical theory of perception.

In discussions of perception and its relation to knowledge, it is common to distinguish what one comes to believe on the basis of perception from the distinctively perceptual basis of one's belief. The distinction can be drawn in terms of propositional contents: there are the contents that a perceiver comes to believe on the basis of her perception, on the one hand; and there are the contents properly attributed to perception itself, on the other. Consider the content.

In discussions of perception and its provision of knowledge, it is common to distinguish what one comes to believe on the basis of perception from the distinctively perceptual basis of one's belief. The distinction can be drawn in terms of propositional contents: there are the contents that a perceiver would normally come to believe on the basis of her perception, on the one hand; and there are the contents properly attributed to perception itself, on the other. Consider the content.