This paper introduces a special issue of Cognitive Science initiated on the 25th anniversary of the publication of Parallel Distributed Processing (PDP), a two-volume work that introduced the use of neural network models as vehicles for understanding cognition. The collection surveys the core commitments of the PDP framework, the key issues the framework has addressed, and the debates the framework has spawned, and presents viewpoints on the current status of these issues. The articles focus on both historical roots and contemporary (...) developments in learning, optimality theory, perception, memory, language, conceptual knowledge, cognitive control, and consciousness. Here we consider the approach more generally, reviewing the original motivations, the resulting framework, and the central tenets of the underlying theory. We then evaluate the impact of PDP both on the field at large and within specific subdomains of cognitive science and consider the current role of PDP models within the broader landscape of contemporary theoretical frameworks in cognitive science. Looking to the future, we consider the implications for cognitive science of the recent success of machine learning systems called “deep networks”—systems that build on key ideas presented in the PDP volumes. (shrink)

In this prcis we focus on phenomena central to the reaction against similarity-based theories that arose in the 1980s and that subsequently motivated the approach to semantic knowledge. Specifically, we consider (1) how concepts differentiate in early development, (2) why some groupings of items seem to form or coherent categories while others do not, (3) why different properties seem central or important to different concepts, (4) why children and adults sometimes attest to beliefs that seem to contradict their direct experience, (...) (5) how concepts reorganize between the ages of 4 and 10, and (6) the relationship between causal knowledge and semantic knowledge. The explanations our theory offers for these phenomena are illustrated with reference to a simple feed-forward connectionist model. The relationships between this simple model, the broader theory, and more general issues in cognitive science are discussed. (shrink)

The commentaries reflect three core themes that pertain not just to our theory, but to the enterprise of connectionist modeling more generally. The first concerns the relationship between a cognitive theory and an implemented computer model. Specifically, how does one determine, when a model departs from the theory it exemplifies, whether the departure is a useful simplification or a critical flaw? We argue that the answer to this question depends partially upon the model's intended function, and we suggest that connectionist (...) models have important functions beyond the commonly accepted goals of fitting data and making predictions. The second theme concerns perceived in-principle limitations of the connectionist approach to cognition, and the specific concerns these perceived limitations raise for our theory. We argue that the approach is not in fact limited in the ways our critics suggest. One common misconception, that connectionist models cannot address abstract or relational structure, is corrected through new simulations showing directly that such structure can be captured. The third theme concerns the relationship between parallel distributed processing (PDP) models and structured probabilistic approaches. In this case we argue that there the difference between the approaches is not merely one of levels. Our PDP approach differs from structured statistical approaches at all of Marr's levels, including the characterization of the goals of cognitive computations, and of the representations and algorithms used. (shrink)

The development of ethical and practice guidelines related to mental health service on the Internet has lagged behind the movement of practitioners into this area. Even for clinicians who are not offering services on the Web, the Internet has led to confusion and concern about proper roles and responsibilities. This article discusses an actual experience we had with a self-described rationally suicidal man with multiple sclerosis. After presenting some background on MS, we report initial interactions with the man verbatim and (...) summarize subsequent correspondence in an analysis of the man's claim that his decision to die was well reasoned and that he should be allowed a physician's assistance. (shrink)

The inaugural collection in an exciting new exchange between philosophers and geographers, this volume provides interdisciplinary approaches to the environment as space, place, and idea. Never before have philosophers and geographers approached each other's subjects in such a strong spirit of mutual understanding. The result is a concrete exploration of the human-nature relationship that embraces strong normative approaches to environmental problems.

Michael A. PetersBeijing Normal UniversityMy deepest condolences to Pepe, Dom and Marcus and to Jim’s grandchildren. Tina and I spent a lot of time at the Marshall family home, often attending dinn...

This special section of Contemporary Pragmatism is about John Dewey's book The Public and Its Problems, published in 1927. Scholars consistently turn to this work when assessing Dewey's conception of democracy and what might be imagined for democracy in our own time. This special section contains four articles by James Bohman, Eric MacGilvray, Eddie Glaude, and myself.

In Black Bodies, White Gazes, George Yancy investigates how the experiences of blacks both come into view and are simultaneously distorted by the racialized gaze of whites. In the process of distortion by whites, often unbeknownst to themselves, they are continually implicated in the oppression of blacks that reflexively reinvests "whiteness as the transcendental norm" (xxiii). Precisely because whiteness is tied to socially embedded historical power and privilege that functions on multiple levels of social life, undoing its ill effects, to (...) borrow from James Baldwin, is an ongoing process of entering "into battle with the historical creation, Oneself, and attempt[ing] to re[-]create oneself according to a .. (shrink)

In contemporary forms of psychoanalysis, particularly intersubjective systems theory, the turn towards contextualism has permitted the development of new ways of thinking and practicing that have dispensed with the notion of isolated individuality. For many who embrace this "post-subjectivist" way of thinking and practicing, the recognition that all human experience is fundamentally immersed in the world makes the question of individuality seem confusing, even anachronistic. Yet the challenge of individuality remains an important and pressing issue for contemporary theory and practice; (...) many clinicians are left to wonder about the role of "individual" experience and how to approach it conceptually or clinically. This volume of original essays gives the problem of individuality its due, without losing sight of the importance of contextualized experience. Drawing on a variety of disciplinary backgrounds - philosophical, developmental, biological, and neuroscientific - the contributors address the tension that exists between individuality and the emergence of contextualism as a dominant mode of psychoanalytic theory and practice, thereby providing unique insights into the role and place of individuality both in and out of the clinical setting. Ultimately, these essays demonstrate that individuality, no matter how it may be defined, always occurs within a contextual web that forms the basis of human experience. _Contributors:_ William J. Coburn, Philip Cushman, James L. Fosshage, Roger Frie, Frank M. Lachmann, Jack Martin, Donna Orange, Robert D. Stolorow, Jeff Sugarman. (shrink)

The most pressing issues of the twenty-first century—climate change and persistent hunger in a world of food surpluses, to name only two—are not problems that can be solved from within individual disciplines, nation-states, or cultural perspectives. They are predicaments that can only be resolved by generating sustained and globally robust coordination across value systems. The scale of the problems and necessity for coordinated global solutions signal a world historical transit as momentous as the Industrial Revolution: a transition from the predominance (...) of technical knowledge to that of ethical deliberation. This volume brings together leading thinkers from around the world to deliberate on how best to correlate worth (value) with what is worthwhile (values), pairing human prosperity with personal, environmental, and spiritual flourishing in a world of differing visions of what constitutes a moral life. Especially in the aftermath of what is now being called the Great Recession, awareness has mounted of the imperative to question the modern divorce of economics from ethics. While the domains of economics and ethics were from antiquity through at least the eighteenth century understood in many cultures to be coterminous and mutually entailing, the modern assumption has been that the goal of maximizing human prosperity and the aim of justly enhancing our lives as persons and as communities were functionally and practically distinct. Working from a wide array of perspectives, the contributors to this volume offer a set of challenges to the assumed independence of the quantitative and qualitative dimensions of human and planetary well-being. Reflecting on the complex interrelationship among economics, justice, and equity, the book resists "one size fits all" approaches and struggles to revitalize the marriage of economics and ethics by activating cultural differences as the basis of mutual contribution to shared human flourishing. The publication of this important collection will stimulate or extend critical debates among scholars and students working in a number of disciplines in the social sciences and humanities, including philosophy, history, environmental studies, economics, and law. Contributors: Roger T. Ames, James Behuniak Jr., Steve Bein, Nalini Bhushan, Purushottama Bilimoria, Steven Burik, Amita Chatterjee, Baoyan Cheng, Gordon Davis, Jay L. Garfield, Steven F. Geisz, Peter D. Hershock, Larry A. Hickman, Kathleen M. Higgins, Heidi M. Hurd, Thomas P. Kasulis, Workineh Kelbessa, Lori Keleher, Oliver Leaman, James McRae, Jin Y. Park, James Peterman, Naoko Saito, May Sim, Robert Smid, Paul Standish, Kenneth W. Stikkers, Karsten J. Struhl, Meera Sushila Viswanathan, Wu Shiu- Ching, Xu Di, T. Yamauchi, Yang Liuxin. (shrink)

In this interview, James L. McClelland responds to questions regarding connectionist models of cognition, a theory inspired by information processing in the brain. McClelland explains the distinction between symbolic and non-symbolic processing for a better understanding of mental processes. He argues that connectionist models can perform the computations which we know the brain can perform. In addition, he responds to several general questions on the perspectives of computational models of cognition.

Anthropology is a complex, wide-ranging, and ever-changing field. This clear, coherent, and well-crafted book is a revised version of a very successful text first published in 1986, designed to supplement standard textbooks and monographs. It covers the central concepts, distinctive methodologies, and philosophical as well as practical issues of cultural anthropology, and it is accessible to the anthropological novice, and of value to the professional. The updated version covers current issues in cultural anthropology, and includes topics such as globalization, gender, (...) post-modernism and public issues, and reflects changes in perspective and language. (shrink)

This paper examines the general prospects for conceptual role expressivism, expressivist theories that embrace conceptual role semantics. It has two main aims. The first aim is to provide a general characterisation of the view. The second aim is to raise a challenge for the general view. The challenge is to explain why normative concepts are not a species of defective concepts, where defective concepts are those that cannot meaningfully embed and participate in genuine inference. After rejecting existing attempts to answer (...) the challenge, I propose an alternative solution. However, the solution leaves conceptual role expressivism a far less distinctive and interesting position than its proponents claim. I conclude that we should be sceptical about how much expressivists gain by appealing to conceptual role semantics. (shrink)

Mental health professionals rightfully experience significant anxiety regarding their duty to protect when working with potentially dangerous individuals. This work dispels myths and provides readers with a resource addressing the situations where a duty to protect may apply.

A PERSONAL PHILOSOPHY FOR WAR TIME BY THE AUTHOR OF STREAMLINE YOUR MIND A Personal Philosophy for War Time JAMES L. MURSELL Professor of Education Teachers ...