Mental Structures

An ongoing philosophical discussion concerns how various types of mental states fall within broad representational genera—for example, whether perceptual states are “iconic” or “sentential,” “analog” or “digital,” and so on. Here, I examine the grounds for making much more specific claims about how mental states are structured from constituent parts. For example, the state I am in when I perceive the shape of a mountain ridge may have as constituent parts my representations of the shapes of each peak and saddle of the ridge. More specific structural claims of this sort are a guide to how mental states fall within broader representational kinds. Moreover, these claims have significant implications of their own about semantic, functional, and epistemic features of our mental lives. But what are the conditions on a mental state's having one type of constituent structure rather than another? Drawing on explanatory strategies in vision science, I argue that, other things being equal, the constituent structure of a mental state determines what I call its distributional properties—namely, how mental states of that type can, cannot, or must co‐occur with other mental states in a given system. Distributional properties depend critically on and are informative about the underlying structures of mental states, they abstract in important ways from aspects of how mental states are processed, and they can yield significant insights into the variegation of psychological capacities

Should the Internet Exempt the Media Sector from the Antitrust Laws?

This article examines whether the old media and the new media , including the Internet, should be considered to be within the same relevant market for antitrust purposes. To do this the article first demonstrates that proper antitrust consideration of the role of non-price competition necessitates that “news” and “journalism” be analyzed in two distinct ways. First, every part of the operations of a newspaper (or other type of media source), including its investigative reporting and local coverage, should be assessed separately. We present empirical evidence collected for this study which demonstrates that the old media continues to win the vast majority of journalism awards. This and other evidence shows that the quality and variety of a number of specific old media functions are often so much better they should be considered distinct markets for antitrust purposes. Second, the evidence shows that the totality of what newspapers (or other media sources) do should be analyzed as a whole. This is because newspapers constitute a valuable form of “one stop shopping” for a diverse array of bundled journalism. For both reasons newspapers often should continue to constitute separate markets for antitrust purposes. If antitrust decision makers accept arguments that the Internet should routinely be included within the same market as the traditional media, however, the media sector would become virtually exempt from the antitrust laws. This would be a prescription for disaster.. The appendices for this paper are available at the following URL: http://scholarworks.law.ubalt.edu/all_fac/1748

Should the Internet Exempt the Media Sector from the Antitrust Laws?

This article examines whether the old media and the new media , including the Internet, should be considered to be within the same relevant market for antitrust purposes. To do this the article first demonstrates that proper antitrust consideration of the role of non-price competition necessitates that “news” and “journalism” be analyzed in two distinct ways. First, every part of the operations of a newspaper (or other type of media source), including its investigative reporting and local coverage, should be assessed separately. We present empirical evidence collected for this study which demonstrates that the old media continues to win the vast majority of journalism awards. This and other evidence shows that the quality and variety of a number of specific old media functions are often so much better they should be considered distinct markets for antitrust purposes. Second, the evidence shows that the totality of what newspapers (or other media sources) do should be analyzed as a whole. This is because newspapers constitute a valuable form of “one stop shopping” for a diverse array of bundled journalism. For both reasons newspapers often should continue to constitute separate markets for antitrust purposes. If antitrust decision makers accept arguments that the Internet should routinely be included within the same market as the traditional media, however, the media sector would become virtually exempt from the antitrust laws. This would be a prescription for disaster.. The appendices for this paper are available at the following URL: http://scholarworks.law.ubalt.edu/all_fac/1748

Should the Internet Exempt the Media Sector from the Antitrust Laws?

Suppose the twenty largest traditional news media companies in the United States, including the Wall Street Journal, New York Times, Washington Post, ABC, NBC, CBS, Fox, and CNN, announced the merger of their news operations. They would likely claim that this merger would result in tremendous cost savings by eliminating duplicative news gathering expenses. They would be correct. They also would argue that prices would not be affected. After all, they compete for advertising dollars and personnel with many other TV and radio shows that are not in the news business. It would be difficult to demonstrate an adverse effect on the price of anything. However, just in case the antitrust enforcers argue that some prices might be affected, suppose the media companies also announced that, if allowed to merge, they’d agree never to raise the price of anything—not of advertising rates, not of newspapers, not of anything

Should the Internet Exempt the Media Sector from the Antitrust Laws?

Suppose the twenty largest traditional news media companies in the United States, including the Wall Street Journal, New York Times, Washington Post, ABC, NBC, CBS, Fox, and CNN, announced the merger of their news operations. They would likely claim that this merger would result in tremendous cost savings by eliminating duplicative news gathering expenses. They would be correct. They also would argue that prices would not be affected. After all, they compete for advertising dollars and personnel with many other TV and radio shows that are not in the news business. It would be difficult to demonstrate an adverse effect on the price of anything. However, just in case the antitrust enforcers argue that some prices might be affected, suppose the media companies also announced that, if allowed to merge, they’d agree never to raise the price of anything—not of advertising rates, not of newspapers, not of anything

Recent Journalism Awards Won by Old, New, and Hybrid Media

This compares the quality of the old media to that of the new media by determining how often each type of media source wins major journalism awards. It divides media sources into three categories: old, new and hybrid. New media is limited to publications that were started purely as online news publications. Old media is classified in the traditional sense to include such newspapers as the New York Times. Hybrid media combines elements of both new and old media. Our research compares the number of Pulitzer Prizes and other major journalism awards won by these three types of media sources since 2005 (or the dates these awards first opened to non-traditional types of media). The results demonstrate that traditional media still wins the vast majority of journalism awards (225 of 307 awards (73%), including 24 of 37 Pulitzer Prizes), while the new media won only 36 of 307 awards, and only 4 Pulitzer Prizes). The results are especially striking for awards for investigatory journalism (traditional media won 65 of 86 awards - 76%) and for local journalism (traditional media won 23 of 32 awards - 77%). This is evidence that the reporting by the traditional media is often of a significantly higher quality than that of the new or hybrid media. This quality difference has implications for Antitrust analysis and for many other policy issues. This document serves as the appendix to an article: Thomas J. Horton & Robert H. Lande, Should the Internet Exempt the Media Sector from the Antitrust Laws? 65 Florida Law Review 1521 (2013), available at: http://scholarworks.law.ubalt.edu/all_fac/1747

Ecological and genetic effects of introduced species on their native competitors

Species introductions to new habitats can cause a decline in the population size of competing native species and consequently also in their genetic diversity. We are interested in why these adverse effects are weak in some cases whereas in others the native species declines to the point of extinction. While the introduction rate and the growth rate of the introduced species in the new environment clearly have a positive relationship with invasion success and impact, the influence of competition is poorly understood. Here, we investigate how the intensity of interspecific competition influences the persistence time of a native species in the face of repeated and ongoing introductions of the nonnative species. We analyze two stochastic models: a model for the population dynamics of both species and a model that additionally includes the population genetics of the native species at a locus involved in its adaptation to a changing environment. Counterintuitively, both models predict that the persistence time of the native species is lowest for an intermediate intensity of competition. This phenomenon results from the opposing effects of competition at different stages of the invasion process: With increasing competition intensity more introduction events are needed until a new species can establish, but increasing competition also speeds up the exclusion of the native species by an established nonnative competitor. By comparing the ecological and the eco-genetic model, we detect and quantify a synergistic feedback between ecological and genetic effects.Comment: version accepted at Theoretical Population Biolog

Implications of long tails in the distribution of mutant effects

Long-tailed distributions possess an in nite variance, yet a nite sample that is drawn from such a distribution has a nite variance. In this work we consider a model of a population subject to mutation, selection and drift. We investigate the implications of a long-tailed distribution of mutant allelic e¤ects on the distribution of genotypic e¤ects in a model with a continuum of allelic e¤ects. While the analysis is confined to asexual populations, it does also have implications for sexual populations. We obtain analytical results for a selectively neutral population as well as one subject to selection. We supplement these analytical results with numerical simulations, to take into account genetic drift. We nd that a long-tailed distribution of mutant e¤ects may a¤ect both the equilibrium and the evolutionary adaptive behaviour of a population