This article described three heuristics that are employed in making judgements under uncertainty: representativeness, which is usually employed when people are asked to judge the probability that an object or event A belongs to class or process B; availability of instances or scenarios, which is often employed when people are asked to assess the frequency of a class or the plausibility of a particular development; and adjustment from an anchor, which is usually employed in numerical prediction when a relevant value (...) is available. These heuristics are highly economical and usually effective, but they lead to systematic and predictable errors. A better understanding of these heuristics and of the biases to which they lead could improve judgements and decisions in situations of uncertainty. (shrink)

What ecological advantages do animals gain by being able to detect, extract and exploit wavelength information? What are the advantages of representing that information as hue qualities? The benefits of adding chromatic to achromatic vision, marginal in object detection, become apparent in object recognition and receiving biological signals. It is argued that this improved performance is a direct consequence of the fact that many animals' visual systems reduce wavelength information to combinations of four basic hues. This engenders a simple categorical (...) scheme that permits a rich amount of sensory information to be rapidly and efficiently employed by cognitive machinery of limited capacity. (shrink)

As Aristotle stated, scientific explanation is based on deductive argument--yet, Wesley C. Salmon points out, not all deductive arguments are qualified explanations. The validity of the explanation must itself be examined. _Four Decades of Scientific Explanation_ provides a comprehensive account of the developments in scientific explanation that transpired in the last four decades of the twentieth century. It continues to stand as the most comprehensive treatment of the writings on the subject during these years. Building on the historic 1948 essay (...) by Carl G. Hempel and Paul Oppenheim, "Studies in the Logic of Explanation,” which introduced the deductive-nomological model on which most work on scientific explanation was based for the following four decades, Salmon goes beyond this model's inherent basis of describing empirical knowledge to tells us “not only _what,_ but also _why_.” Salmon examines the predominant models in chronological order and describes their development, refinement, and criticism or rejection. _Four Decades of Scientific Explanation_ underscores the need for a consensus of approach and ongoing evaluations of methodology in scientific explanation, with the goal of providing a better understanding of natural phenomena. (shrink)

Common sense and philosophical tradition agree that mind makes a difference. What we do depends not only on how our bodies are put together, but also on what we think. Explaining how mind can make a difference has proved challenging, however. Some have urged that the project faces an insurmountable dilemma: either we concede that mentalistic explanations of behavior have only a pragmatic standing or we abandon our conception of the physical domain as causally autonomous. Although each option has its (...) advocates, most theorists have sought a middle way that accommodates both the common-sense view of mind and the metaphysical conviction about the physical world. This volume presents a collection of new, specially written essays by a diverse group of philosophers, each of whom is widely known for defending a particular conception of minds and their place in nature. Contributors include Robert Audi, Lynne Rudder Baker, Tyler Burge, Donald Davidson, Fred Dretske, Ted Honderich, Jennifer Hornsby, Frank Jackson, Jaegwon Kim, Brian P. McLaughlin, Ruth Garrett Millikan, H. W. Noonan, Philip Pettit, Ernest Sosa, and Robert Van Gulick. (shrink)