Laudan constructs a fresh approach to a longtime problem for the philosopher of science: how to explain the simultaneous and widespread presence of both agreement and disagreement in science. Laudan critiques the logical empiricists and the post-positivists as he stresses the need for centrality and values and the interdependence of values, methods, and facts as prerequisites to solving the problems of consensus and dissent in science.

One of the most notable aspects of Fodor's work is that it articulates features not only of speculative cognitive architectures but also of current research in ...

Several arguments are considered which purport to demonstrate the impossibility of theory-neutral observation. The most important of these infers the continuity of observation with theory from the presumed continuity of perception with cognition, a doctrine widely espoused in recent cognitive psychology. An alternative psychological account of the relation between cognition and perception is proposed and its epistemological consequences for the observation/theory distinction are then explored.

Churchland's paper "Perceptual Plasticity and Theoretical Neutrality" offers empirical, semantical and epistemological arguments intended to show that the cognitive impenetrability of perception "does not establish a theory-neutral foundation for knowledge" and that the psychological account of perceptual encapsulation that I set forth in The Modularity of Mind "[is] almost certainly false". The present paper considers these arguments in detail and dismisses them.

The doctrine that the character of our perceptual knowledge is plastic, and can vary substantially with the theories embraced by the perceiver, has been criticized in a recent paper by Fodor. His arguments are based on certain experimental facts and theoretical approaches in cognitive psychology. My aim in this paper is threefold: to show that Fodor's views on the impenetrability of perceptual processing do not secure a theory-neutral foundation for knowledge; to show that his views on impenetrability are almost certainly (...) false; and to provide some additional arguments for, and illustrations of, the theoretical character of all observation judgments. (shrink)

This study synthesizes current information from the various fields of cognitive science in support of a new and exciting theory of mind. Most psychologists study horizontal processes like memory and information flow; Fodor postulates a vertical and modular psychological organization underlying biologically coherent behaviors. This view of mental architecture is consistent with the historical tradition of faculty psychology while integrating a computational approach to mental processes. One of the most notable aspects of Fodor's work is that it articulates features not (...) only of speculative cognitive architectures but also of current research in artificial intelligence. (shrink)

The dissertation sketches a solution to the problem of pictorial representation. By appealing to the visual system as an information processing system, we understand how it is that certain sorts of pictures are seen as representing their subjects. ;The first chapter introduces the problem and discusses existing philosophical treatment of pictorial representation. Conventionalist arguments against the possibility of a naturalist account are refuted, thus clearing the way for a naturalist, realist, "resemblance" view of pictorial representation. ;The second chapter discusses the (...) notion of the modularity of mind. Aspects of perceptual holism are criticized. I support the modularist claim that one can make a useful distinction between observation and inference without suffering familiar positivist problems. I suggest that much of vision can fruitfully be studied in isolation from other mental processes. ;The third and fourth chapters provide a contemporary account of human vision. A model of the neural circuitry of vision is provided. Similar treatment is given to mathematical modeling of spatial vision. Also, some attention is paid to lower level biological details and to higher level functional attributes of the system. Research methodologies are discussed, as are the connections between the various levels of investigation. ;The concluding chapter begins with a theoretical and methodological comparison of experimental work cited as empirical foundation for various forms of conventionalism with that supporting modularity. The questions of Chapter I are then reconsidered in light of the vision science of Chapters III and IV. It is shown that current understanding of vision elucidates many of the problems of pictorial representation. Especially relevant is the observation that human spatial vision functions by abstracting certain features from the environment, features that are preserved in certain sorts of pictures. It turns out that many of the conventionalist claims about mind, vision and pictorial representation are unsupportable, given current understanding of mind and vision. (shrink)