In this review essay, numerous historical errors in The Cognitive Revolution in Psychology by Bernard J. Baars are discussed. Approximately one-half of the book is devoted to interviews of people who have been important in the cognitive revolution, but several of the interviews are less informative than they might have been. Many of the interviews involved a minimum of interaction between Baars and the interviewees. Additionally, interesting topics, the nature of representation for example, are introduced but not considered in sufficient (...) detail to make a contribution to either cognitive science or the history of psychology. (shrink)

We suggest that the phenomenon of uncertainty monitoring in nonhuman animals contributes richly to the conception of nonhuman animals' self-monitoring. We propose that uncertainty may play a role in the emergence of new forms of behavior that are adaptive. We recommend that Smith et al. determine the extent to which the uncertain response transfers immediately to other test paradigms.

This book is a manuscript that was virtually complete when James W. Cornman died. Most of the chapters were in final form, and all but the last had been revised by the author. The last chapter was in handwritten form, and the concluding remarks were not finished. Swain took charge of the proofreading and John L. Thomas compiled the indices with the assistance of Lehrer. It is our opinion that this manuscript, like the other books Cornman published, is one (...) of exceptional scholarly and philo sophical importance. As do all of his philosophical publications, this work reflects Cornman's great love for philosophy and his commitment to the search for truth. Every serious student and author of epistemology will benefit from and admire the thorough scholarship and rigorous argumentation they will find herein. It has been our privilege to partici pate in the preparation of the manuscript for the philosophical public. KEITH LEHRER MARSHALL SWAIN IX INTRODUCTION INTRODUCTION TO EPISTEMOLOGICAL SKEPTICISM Many philosophers try to refute skepticism, but few try to give a precise characterization of the thesis they attack. My first aim, consequently, is to characterize skepticism, or, more precisely, several species of skepticism. Then I shall choose those species I wish to consider and justify my choice. To begin, let me distinguish what I shall call "epistemological skepticism" from the thesis I shall call "ontological nihilism" and from what is believed by someone whom I shall call an "ontological skeptic". (shrink)

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be (...) preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

Given the portion of his life spent at military schools, it is striking that Ender and his peers apparently never study military ethics. The ethical lessons Ender and his peers might have learned are so obviously relevant to operations against the buggers that you cannot help but ask how the I.F.'s leadership could have failed to teach military ethics at all. This chapter presents some highlights of Western thinking on the ethics of war and analyzes Ender's education and actions in (...) light of those moral traditions. Ender's Game teaches powerful lessons for students of just war theory and the just war tradition because it asks questions that matter to everyone, from national decision‐makers all the way down to individual soldiers. Genocide and xenocide are extreme in their quantity of killing, but not necessarily in their moral magnitude. (shrink)

The definition of death is one of the oldest and most enduring problems in biophilosophy and bioethics. Serious controversies over formally defining death began with the invention of the positive-pressure mechanical ventilator in the 1950s. For the first time, physicians could maintain ventilation and, hence, circulation on patients who had sustained what had been previously lethal brain damage. Prior to the development of mechanical ventilators, brain injuries severe enough to induce apnea quickly progressed to cardiac arrest from hypoxemia. Before the (...) 1950s, the loss of spontaneous breathing and heartbeat were perfect predictors of death because the functioning of the brain and of all other organs ceased rapidly and nearly simultaneously thereafter, producing a unitary death phenomenon. In the pretechnological era, physicians and philosophers did not have to consider whether a human being who had lost certain “vital functions” but had retained others was alive, because such cases were technically impossible. (shrink)

The distinction between the "permanent" (will not reverse) and "irreversible" (cannot reverse) cessation of functions is critical to understand the meaning of a determination of death using circulatory–respiratory tests. Physicians determining death test only for the permanent cessation of circulation and respiration because they know that irreversible cessation follows rapidly and inevitably once circulation no longer will restore itself spontaneously and will not be restored medically. Although most statutes of death stipulate irreversible cessation of circulatory and respiratory functions, the accepted (...) medical standard is their permanent cessation because permanence is a perfect surrogate indicator for irreversibility, and using it permits a more timely declaration. Therefore, patients properly declared dead in donation after circulatory death (DCD) protocols satisfy the requirements of death statutes and do not violate the dead donor rule. The acronym DCD should represent organ "donation after circulatory death" to clarify that the death standard is the permanent cessation of circulation, not heartbeat. Heart donation in DCD does not retroactively negate the donor's death determination because circulation has ceased permanently. (shrink)

A combination of emerging life support technologies and entrenched organ donation practices are complicating the physician's task of determining death. On the one hand, technologies that support or replace ventilation and circulation may render the diagnosis of death ambiguous. On the other, transplantation of vital organs requires timely and accurate declaration of death of the donor to keep the organs as healthy as possible. These two factors have led to disagreements among physicians and scholars on the precise moment of death. (...) In this article, I suggest that the debate about exactly when a person dies can benefit from distinguishing the strict biological concept of death from the medical standards for determining human death, and I show how an appreciation of the difference between the permanent and irreversible cessation of circulation is helpful in understanding the reasons for the two approaches to determining when death should be declared. (shrink)

The publicity surrounding the recent McMath and Muñoz cases has rekindled public interest in brain death: the familiar term for human death determination by showing the irreversible cessation of clinical brain functions. The concept of brain death was developed decades ago to permit withdrawal of therapy in hopeless cases and to permit organ donation. It has become widely established medical practice, and laws permit it in all U.S. jurisdictions. Brain death has a biophilosophical justification as a standard for determining human (...) death but remains poorly understood by the public and by health professionals. The current controversies over brain death are largely restricted to the academy, but some practitioners express ambivalence over whether brain death is equivalent to human death. Brain death remains an accepted and sound concept, but more work is necessary to establish its biophilosophical justification and to educate health professionals and the public. (shrink)

After his father passed away, James Nolan's mother gave him a box of materials that his dad had kept private. To Nolan's complete surprise, the contents revealed the role his grandfather had played as a doctor in the Manhattan Project. Dr. Nolan, it turned out, had been a significant figure. A talented radiologist, he cared for the scientists on the Project, helped organize the safety and evacuation plans for the Trinity Test at Alamogordo, escorted the "Little Boy" bomb from (...) Los Alamos to Japan, and was one of the first Americans to enter the irradiated ruins of Hiroshima and Nagasaki. The documents set Nolan on a hunt for more information about his grandfather and more generally about the conflicted role that medical personnel played in the early years of atomic testing. The result is a compelling history of the dawn of the atomic age as seen through the eyes of men and women torn between their duty and desire to win the war and their oath to protect life. Nolan follows his grandfather and medical colleagues as they seek to maximize safety while serving leaders determined to minimize delays, and as they consider the ethics of ending the deadliest of all wars with the most lethal of all weapons. The result, Nolan shows, was a very human pattern of caution, co-optation, and complicity. A vital and vivid account of a largely unknown chapter in atomic history, Delivering Little Boy is also a profound meditation on the professional and moral dilemmas that ordinary people face in extraordinary times. (shrink)

Ariane Lewis provided an insightful review of several controversial cases of death by neurologic criteria (“brain death”) in the UK, focusing on Archie Battersbee, a boy whose tragic illness provok...

Nair-Collins and Joffe (2023) highlighted the noncongruence between the language of the Uniform Determination of Death Act (UDDA) and the accepted brain death bedside testing standard by showing th...

Notwithstanding these wise pronouncements, my project here is to characterize the biological phenomenon of death of the higher animal species, such as vertebrates. My claim is that the formulation of “whole- brain death ” provides the most congruent map for our correct understanding of the concept of death. This essay builds upon the foundation my colleagues and I have laid since 1981 to characterize the concept of death and refine when this event occurs. Although our society's well-accepted program of multiple (...) organ procurement for transplantation requires the organ donor first to be dead, the concept of brain death is not merely a social contrivance to permit us to obtain the benefits of organ procurement. Rather, the concept of whole- brain death stands independently as the most accurate biological representation of the demise of the human organism. (shrink)

To students and practitioners of anamorphic art, the name of Jean-François Niceron is more than preeminent; it has become iconic. La Perspective Curieuse was first published in 1638. An augmented version was then translated into Latin by Mersenne in 1646. A newly amended and augmented version was retranslated into French by Roberval in 1652. This book is an English translation of the 1652 text, with reference to the 1638 and 1646 versions. Considering the continued high reputation of the book, the (...) mathematics have been checked for correctness and consistency, and the authors have provided a full commentary, pointing out the most difficult turns of the 17th-century French, the respective contributions of Niceron, Mersenne and Roberval, and explaining Niceron's greatest insights and weaknesses. (shrink)

The locked-in syndrome is a state of profound paralysis with preserved awareness of self and environment who typically results from a brain stem stroke. Although patients in LIS have great difficulty communicating, their consciousness, cognition, and language usually remain intact. Medical decision-making by LIS patients is compromised, not by cognitive impairment, but by severe communication impairment. Former systems of communication that permitted LIS patients to make only “yes” or “no” responses to questions was sufficient to validate their consent for simple (...) medical decisions but not for consequential medical decisions such as whether to refuse further life-sustaining therapy. Emerging technologies including computer-tracking assistance of retained partial motor function and brain-computer interfaces promise to improve the communication ability of LIS patients and, when better developed, will allow them to fully exercise their right to actively participate in consequential medical decisions about their own medical care. Although so-called “covert cognition” patients clinically diagnosed as vegetative state that are shown to be aware by functional neuroimaging maybe metaphorically considered locked-in, it is nosologically more coherent not to categorize them formally as LIS. (shrink)

Over the past quarter century, organ donation after the circulatory determination of death (DCD) has grown in acceptance and prevalence throughout the world (Domínguez-Gil et al. 2021). Notwithstan...

Despite the popularity, success, and growth of programs of organ donation after the circulatory determination of death (DCDD), a long‐standing controversy persists over whether the organ donor is truly dead at the moment physicians declare death, usually following five minutes of circulatory and respiratory arrest. Advocates of the prevailing death determination standard claim that the donor is dead when declared because of permanent cessation of respiration and circulation. Critics of this standard argue that while the cessation of respiration and circulation (...) may be permanent, it may not be irreversible at the moment death is declared because, if cardiopulmonary resuscitation were performed, it might succeed. And because irreversibility of cessation of respiration and circulation is required by both the statute and the biological concept of death, the donor must be alive. Who is correct?Making two related distinctions clarifies the cause of the disagreement over whether the DCDD donor is dead and points to a possible resolution. First, in a determination of death, there is an important distinction between the permanent and the irreversible cessation of circulation and respiration—two associated phenomena that are often confounded. Second, there is an important distinction between the medical practice standard for death determination, in which physicians certify the permanent cessation of vital functions as sufficient for death declaration, and the underlying biological concept of death that requires the irreversible cessation of vital functions because death, by definition, is an irreversible event. (shrink)

The most controversial issue in organ donation after the circulatory determination of death is whether the donor was truly dead at the moment death is declared. My colleagues and I further analyzed this issue by showing the relevance of the distinction between the “permanent” and the “irreversible” loss of circulatory functions. Permanent cessation means that circulatory function will not return because it will not be restored spontaneously and medical attempts to restore it will not be conducted. By contrast, irreversible cessation (...) means that circulatory function cannot be restored using currently available technology. In this issue of the Report, Kevin Munjal and colleagues criticize the unjustified application of the permanent‐irreversible distinction, which my colleagues and I developed for cDCDD, to their well‐designed and carefully conducted experimental protocol of uncontrolled DCDD (uDCDD) in New York City, for which our analysis was not targeted. They claimed that to determine a donor's death in uDCDD, it is unnecessary to show that permanence is a valid surrogate indicator of irreversibility because the unsuccessful attempt to resuscitate the patient comprises prima facie evidence of circulatory irreversibility. Ironically, that potent justification defending death determination in uDCDD yields limitations that are similar to those created when our permanent‐irreversible distinction is applied to death determination in cDCDD. (shrink)

In a seminal 1977 article, Rumelhart argued that perception required the simultaneous use of multiple sources of information, allowing perceivers to optimally interpret sensory information at many levels of representation in real time as information arrives. Building on Rumelhart's arguments, we present the Interactive Activation hypothesis—the idea that the mechanism used in perception and comprehension to achieve these feats exploits an interactive activation process implemented through the bidirectional propagation of activation among simple processing units. We then examine the interactive activation (...) model of letter and word perception and the TRACE model of speech perception, as early attempts to explore this hypothesis, and review the experimental evidence relevant to their assumptions and predictions. We consider how well these models address the computational challenge posed by the problem of perception, and we consider how consistent they are with evidence from behavioral experiments. We examine empirical and theoretical controversies surrounding the idea of interactive processing, including a controversy that swirls around the relationship between interactive computation and optimal Bayesian inference. Some of the implementation details of early versions of interactive activation models caused deviation from optimality and from aspects of human performance data. More recent versions of these models, however, overcome these deficiencies. Among these is a model called the multinomial interactive activation model, which explicitly links interactive activation and Bayesian computations. We also review evidence from neurophysiological and neuroimaging studies supporting the view that interactive processing is a characteristic of the perceptual processing machinery in the brain. In sum, we argue that a computational analysis, as well as behavioral and neuroscience evidence, all support the Interactive Activation hypothesis. The evidence suggests that contemporary versions of models based on the idea of interactive activation continue to provide a basis for efforts to achieve a fuller understanding of the process of perception. (shrink)

I consider the role of cognitive modeling in cognitive science. Modeling, and the computers that enable it, are central to the field, but the role of modeling is often misunderstood. Models are not intended to capture fully the processes they attempt to elucidate. Rather, they are explorations of ideas about the nature of cognitive processes. In these explorations, simplification is essential—through simplification, the implications of the central ideas become more transparent. This is not to say that simplification has no downsides; (...) it does, and these are discussed. I then consider several contemporary frameworks for cognitive modeling, stressing the idea that each framework is useful in its own particular ways. Increases in computer power (by a factor of about 4 million) since 1958 have enabled new modeling paradigms to emerge, but these also depend on new ways of thinking. Will new paradigms emerge again with the next 1,000‐fold increase? (shrink)

The study of human intelligence was once dominated by symbolic approaches, but over the last 30 years an alternative approach has arisen. Symbols and processes that operate on them are often seen today as approximate characterizations of the emergent consequences of sub- or nonsymbolic processes, and a wide range of constructs in cognitive science can be understood as emergents. These include representational constructs (units, structures, rules), architectural constructs (central executive, declarative memory), and developmental processes and outcomes (stages, sensitive periods, neurocognitive (...) modules, developmental disorders). The greatest achievements of human cognition may be largely emergent phenomena. It remains a challenge for the future to learn more about how these greatest achievements arise and to emulate them in artificial systems. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:The Veterans Affairs National Center for Clinical EthicsJames L. Bernat (bio)The veterans health administration is the largest health care system in the United States and, indeed, is larger that the health care system of many foreign countries. In February 1991 the Department of Veterans Affairs (V.A.) in Washington, D.C. awarded a contract to the clinical ethics group at the Veterans Affairs Medical Center in White River Junction, Vermont to (...) establish the V.A. National Center for Clinical Ethics. In this article I describe the organizational context, mission, operation, and future direction of the Center, which William A. Nelson, Ph.D., and I co-direct.The Veterans Health AdministrationThe Department of Veterans Affairs operates 171 hospitals providing services ranging from primary, secondary, and tertiary medical care to psychiatric hospitals, rehabilitation centers, and nursing homes. The V.A. also provides outpatient services at all hospitals and at dozens of free-standing outpatent clinics. V.A. medical centers employ over 14,000 physicians and serve approximately 4.5 million veteran patients (Hollingsworth and Bondy 1990; Mirvis 1990).The V.A. serves an important educational function, providing training sites for medical students, postgraduate physicians, and trainees in other health-related fields. Approximately 78 percent of V.A. medical centers are affiliated with medical schools. Over one-third of all American medical students and over 40 percent of interns and residents spend a portion of their training in V.A. medical centers. More than 100,000 students in all health-related fields train in V.A. facilities annually (Hollingsworth and Bondy 1990).Research is another mission of the V.A. Many academic physicians and scientists derive their research and salary funding from V.A contracts and awards. The V.A. Research Career Development Program provides the means for many medical school faculty members to achieve successful careers as scientists and clinical investigators. Although research accounts for only slightly more than 1 percent of the V.A. medical budget, two V.A. researchers have been awarded the Nobel Prize (Hollingsworth and Bondy 1990). [End Page 385]In comparison to other medical care settings, the average V.A. patient is likely to be older, poorer, male, less well-educated, more chronically ill, and more expensive to care for. Many patients first patronize the V.A. system after they have been bankrupted by the costs of a major illness. Unlike young, healthy patients ideally favored by health maintenance organizations, these patients immediately require large expenditures for hospitalizations, medications, and other treatments. Additional burdens have been placed on V.A. facilities by a record of chronic federal underfunding over the past decade, despite expanded patient censuses at every facility.Bioethical issues arise in V.A. facilities with great frequency for several reasons. Older and poorer patients are often sicker, have fewer home-support resources, and have completed fewer advance directives for health care. Chronic operational underfunding requires explicit health care rationing systemwide. Academic physicians within the V.A. system have multiple professional duties that have the potential for conflict. Although their primary duty is to their patients, they also must serve the federal government and their medical school academic supervisors. The practice of medical care rationing pits the physician's professional duty to his patient against his duty to the system (Mirvis 1990).The V.A. has responded to these bioethical demands with several initiatives. Hospital ethics advisory committees have been developed in nearly every V.A. medical center. The V.A. National Bioethics Committee has been empaneled to encourage uniform policies across the V.A. system concerning bioethical issues. Most recently, funds were provided for the V.A. National Center for Clinical Ethics.Functions of the National Center for Clinical Ethics (NCCE)The NCCE has a fourfold mission: 1) to enhance the quality of clinical ethics programs at all 171 V.A. medical centers nationwide; 2) to staff the V.A. National Bioethics Committee; 3) to assist administrators and planners in the V.A. Central Office on policy development concerning bioethical issues; and 4) to study, organize, and coordinate clinical, educational, and research bioethics programs throughout the system.Enhancing the quality of clinical ethics programs at V.A. medical centers is largely an... (shrink)