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.

Scepticism about ought simpliciter is the view that there is no such thing as what one ought simpliciter to do. Instead, practical deliberation is governed by a plurality of normative standpoints, each authoritative from their own perspective but none authoritative simpliciter. This paper aims to resist such scepticism. After setting out the challenge in general terms, I argue that scepticism can be resisted by rejecting a key assumption in the sceptic’s argument. This is the assumption that standpoint-relative ought judgments bring (...) with them a commitment to act in accordance with those judgments. Instead, I propose an alternative account of our normative concepts according to which only ought simpliciter judgments commit one to acting in accordance with those judgments. In addition to answering the sceptical challenge, the proposal offers an independently motivated account of what makes a concept normatively authoritative. (shrink)

The question whether epistemological concepts are closed under deduction is an important one since many skeptical arguments depend on closure. Such skepticism can be avoided if closure is not true of knowledge (or justification). This response to skepticism is rejected by Peter Klein and others. Klein argues that closure is true, and that far from providing the skeptic with a powerful weapon for undermining our knowledge, it provides a tool for attacking the skeptic directly. This paper examines various arguments in (...) favor of closure and Klein's attempted use of closure to refute skepticism. Such a refutation of skepticism is mistaken. But the closure principle is in any case false, so the skepticism that depends on it is undermined. The appeal of the closure principle derives from a failure to recognize an important feature of our epistemological concepts, namely, their context relativity. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy and Rhetoric 35.2 (2002) 138-152 [Access article in PDF] Respecting the Rupture: Not Solving the Problem of Unity in Plato's Phaedrus James L. Kastely Plato's Phaedrus is a particularly instructive example of the double nature and status of rhetoric, for it embodies a tension at the heart of rhetoric. The first half of the dialogue presents three examples of rhetorical practice, while the second develops a theoretical (...) justification of rhetoric as an art. Thus, the dialogue would seem to offer a productive negotiation of the practice/theory tension. What makes the dialogue interesting, however, is the fact that this negotiation does not occur. The dialogue does not bring theory and practice into a harmonious relation, for there is a troubling discontinuity between its two halves, and rhetorical practice feels fractured. The exploration of eros that had occupied the first half of the dialogue is abandoned before the beginning of the second half, and then, following a logic that is at best associational, Socrates and Phaedrus explore the standards that should govern the practice of rhetoric. The infelicity of this transition raises a question: why did Plato structure the Phaedrus in such a way that it emphasized the dissonance between the two halves of the dialogue? To pose the question this way, however, is to go in a direction different from many of the best contemporary interpretations of the dialogue, which either argue that the dialogue is unified (Griswold 164) or suggest that the dissonance between its two halves reflects a shift in Plato's approach to philosophy (Kahn 373; Nehamas 352). In contrast, I will argue that the rupture in the dialogue is thematically purposive, for it points to an inescapable schism within rhetoric that makes rhetoric philosophically interesting.Socrates' second speech, his palinode to Eros, is a rhetorical tour de force that closes the first half of the dialogue. The importance of the palinode, however, is not limited to its role as an exemplary rhetorical performance, [End Page 138] for it also plays a crucial role in resolving the problem of erotic madness that organizes the intellectual drama of the first half. It would seem reasonable to expect that such an important and powerful moment in the dialogue would, at the very least, play a significant role in the philosophical discussion that composes the dialogue's second half. But that doesn't happen. While Socrates does refer to the palinode in his theoretical discussion of rhetoric, he makes little use of it, and, more important, he is silent on the subject of eros. Both the dramatic organization of the second half of the dialogue and its theoretical discussion cooperate to turn the rhetorical triumph of the palinode into a problem. Why has eros been abandoned as a philosophic topic, and what does this abandoning imply about the erotically grounded rhetoric that Socrates practiced and defended?To make matters worse, Socrates himself dismisses the palinode as a serious effort. He characterizes the speech as little more than a pleasant game, one that is not without value only because "these two certain forms (of gathering and dividing) were stated by chance" (265c). Far from viewing the palinode as possessing philosophical significance, Socrates appears to value it principally for its being a so-so example of a work of rhetoric that has been shaped by dialectic. While it is hard not to take Socrates' dismissal of the seriousness of the speech as partially disingenuous (just prior to his dismissal, he refers to the palinode as serious and reverent [265b]), he also does seem to mean what he says. Whether he is being straightforward or ironic does not finally matter because in either case the problem that occupies him and Phaedrus in the first half has disappeared from the dialogue. And that creates a problem: for if the philosophic issues of the first half of the dialogue drop out, then the dialogue is not coherent.This incoherence is especially troubling given Socrates' explicit endorsement of coherence as an important rhetorical value. In fact, when he begins his... (shrink)

Metaethical expressivism is typically characterised as the view that normative statements express desire-like attitudes instead of beliefs. However, in this paper I argue that expressivists should claim that normative statements express beliefs in normative propositions, and not merely in some deflationary sense but in a theoretically robust sense explicated by a theory of propositional attitudes. I first argue that this can be achieved by combining an interpretationist understanding of belief with a nonfactualist view of normative belief content. This results in (...) a view I call ‘interpretative expressivism’. I then argue that traditional arguments employed by expressivists that normative statements express noncognitive attitudes can just as well support the claim that normative statements express nonfactual or nonrepresentational beliefs. Finally, I argue that this view has a number of advantages to versions of expressivism that deny that normative statements express non-deflationary normative beliefs. (shrink)

Organ donation after the circulatory determination of death requires the permanent cessation of circulation while organ donation after the brain determination of death requires the irreversible cessation of brain functions. The unified brain-based determination of death connects the brain and circulatory death criteria for circulatory death determination in organ donation as follows: permanent cessation of systemic circulation causes permanent cessation of brain circulation which causes permanent cessation of brain perfusion which causes permanent cessation of brain function. The relevant circulation that (...) must cease in circulatory death determination is that to the brain. Eliminating brain circulation from the donor ECMO organ perfusion circuit in thoracoabdominal NRP protocols satisfies the unified brain-based determination of death but only if the complete cessation of brain circulation can be proved. Despite its medical and physiologic rationale, the unified brain-based determination of death remains inconsistent with the Uniform Determination of Death Act. (shrink)

The concept of whole‐brain death is under attack again. Scholars are arguing that the concept of brain death per se—regardless of the focus on “higher,” “stem” or “whole”—is fundamentally flawed. These scholars have identified what they believe are serious discrepancies between the definition and criterion of brain death, and have pointed out that medical professionals and lay persons remain confused about its meaning. Yet whole‐brain death remains the standard for determining death in much of the Western world and its defenders (...) believe this concept best maps onto our everyday conception of death. (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)

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.

In lieu of an abstract, here is a brief excerpt of the content:Contemplating the Beautiful: The Practical Importance of Theoretical Excellence in Aristotle’s EthicsJames L. Wood (bio)Aristotle, unlike plato, famously distinguishes φρόνησις from, practical from theoretical wisdom, in Book VI of the Nicomachean Ethics. He distinguishes them on the basis of both their objects and their psychic spheres: is the excellence or virtue (ἀρετή) of the scientific faculty, τὸ ἐπιστημονικόν, “by which we contemplate [θεωρου̑μεν] the sort of beings whose principles (...) [ἀρχαί] do not admit of being otherwise,” while φρόνησις is an excellence of the calculative faculty, τὸ λογιστικόν, by which we contemplate “the sort of beings that admit of being otherwise” (VI.1, 1139a6–8).1 Φρόνησις is skilled and experienced deliberation about human action and emotion, and in particular about “the sort of things that relate to (πρός) living well in general” (VI.5,1140a28); so φρόνησις guides right action, and as it turns out, directly entails excellence of character, ἠθική ἀρετή (VI.13, 1145a1–2)., on the other hand, while necessary for complete happiness (VI.12, 1144a1–6), “contemplates none of the things that make a human being happy” (VI.12, 1143b19–20), because it contemplates not changeable human affairs, circumstances, and actions, but eternal and unchanging realities (VI.6–7; X.7–8; cf. On the Soul, III.9, 432b26–433a1). Θεωρία, contemplation itself, is defined with reference to in Book X, where contemplation is made the basis of the highest human happiness as the excellent activity of intellect (νου̑ς) by which “beautiful and divine” realities are apprehended (X.7, 1177a15–18 and following). In contrast, the excellence of practical activity (both φρόνησις and ἠθική ἀρετή) is explicitly distinguished from the excellent theoretical activity of νου̑ς in θεωρία and relegated to a merely “secondary” importance (X.8, 1178a9 and following).2 [End Page 391]We might well conclude from this account that theoretical activity has nothing to do with practical activity, even if each is independently necessary for complete human happiness, and even if, as Aristotle says, practical excellence is somehow necessary to prepare the way for theoretical excellence (cf. VI.13, 1145a6–11). I wish to counter this impression, however, by showing that there is a theoretical dimension to excellent practical activity.3 More precisely, I will argue that theoretical activity contributes to practical excellence by furnishing the principles (ἀρχαί) of practical reasoning to the calculative faculty and the motivating end (τέλος) of action to the irrational-appetitive (τὸ; ἄλογον) part of the soul. The intellectual faculty that performs this theoretical activity is νου̑ς; the principles that νου̑ς apprehends are the first premises of ethical and political deliberation; and the τέλος that νου̑ς holds up to the appetitive soul as an orienting and motivating object is το καλόν.4 What distinguishes this activity from the theoretical activity that furnishes the principles of scientific reasoning (ἐπιστήμη) for the sake of knowledge is both the kinds of objects studied and the purpose of the study. One typically studies mathematics or astronomy in order to gain knowledge, not to act virtuously; however, one can certainly study the principles of human nature for the sake of virtuous action (as well as knowledge), as Aristotle himself does in the Ethics and other treatises (cf. II.2, 1103b27–29).5 Moreover, the theoretical study of the most “beautiful and divine” realities, described in Book X of the Ethics and Book XII of the Metaphysics, raises the possibility of a direct contribution of θεωρία at the highest levels to πρα̑ξις through the mediating activity of νου̑ς in the contemplation of the highest beauty and divinity.In what follows I will develop and defend these points through a close examination of Aristotle’s discussion of these concepts. My argument has three main parts. The first examines the role of thought in excellent action, the second brings out [End Page 392] the significance of το καλόν as the universal object of practical excellence, and the third argues in three subsections for the contribution in different ways of theoretical to practical excellence.1. The Dependence of Desire on Thought in Excellent ActionAs is clear from his concluding remarks in Book VI, where he declares that the possession of φρόνησις entails the possession of all the virtues of character (VI.13, 1145a1–2), Aristotle holds that the ἀρεταί of practical thought and character, φρόνησις and ἠθική ἀρετή, are interdependent and mutually implicating in virtuous choice and action. Thought needs desire in order to be practically effective... (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)

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)

Expressivists about normative thought and discourse traditionally deny that there are nondeflationary normative propositions. However, it has recently been suggested that expressivists might avoid a number of problems by providing a theory of normative propositions compatible with expressivism. This paper explores the prospects for developing an expressivist theory of propositions within the framework of cognitive act theories of propositions. First, I argue that the only extant expressivist theory of cognitive propositions—Michael Ridge's ‘ecumenical expressivist’ theory—fails to explain identity conditions for normative (...) propositions. Second, I argue that this failure motivates a general constraint—the ‘unity requirement’—that any expressivist theory of propositions must provide a unified nonrepresentational explanation of that in virtue of which propositional attitudes have the content that they have. Third, I argue that conceptual role accounts of content provide a promising framework in which to develop an expressivist theory of cognitive propositions. (shrink)

Abstract:Disturbing cases continue to be published of patients declared brain dead who later were found to have a few intact brain functions. We address the reasons for the mismatch between the whole-brain criterion and brain death tests, and suggest solutions. Many of the cases result from diagnostic errors in brain death determination. Others probably result from a tiny amount of residual blood flow to the brain despite intracranial circulatory arrest. Strategies to lessen the mismatch include improving brain death determination training (...) for physicians, mandating a test showing complete intracranial circulatory arrest, or revising the whole-brain criterion. (shrink)

The overall purpose of this paper is to clarify the physical meaning and epistemological status of the term 'measurement' as used in quantum theory. After a review of the essential logical structure of quantum physics, Part I presents interpretive discussions contrasting the quantal concepts observable and ensemble with their classical ancestors along the lines of Margenau's latency theory. Against this background various popular ideas concerning the nature of quantum measurement are critically surveyed. The analysis reveals that, in addition to internal (...) mathematical difficulties, all the so-called quantum theories of measurement are grounded in unjustifiable, classical presuppositions. (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)

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)

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...

This paper compares the preface of Columella’s Res rustica with that of the earliest fully extant Chinese agricultural treatise, the Qimin yaoshu (‘Essential Techniques for the Common People’) of Jia Sixie. I argue that both prefaces have a similar function: to present to the reader the social world in which the author wishes his agricultural work to be understood. By drawing on authoritative literary and historical traditions, each author projects an idealized vision of farming in which the discipline acquires a (...) deep moral significance. Granting these striking similarities, the authors’ views also diverge in certain illuminating respects: these include the moral agency of agriculture, the social location of expertise, and the historical development of agriculture in relation to society. (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)

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...

In lieu of an abstract, here is a brief excerpt of the content:Buddhist-Christian Studies 22.1 (2002) 251-254 [Access article in PDF] James Fredericks Interview The 2002 winner of the Frederick J.Streng Book Award is James Fredericks, professor ofTheological Studies at Loyola Marymount University in Los Angeles, California. Professor Fredericks received the award for his book, Faith Among Faiths: Christian Theology and the Non-Christian Religions, published by Paulist Press (New York) in 2001. Buddhist-Christian Studies asked James about his (...) writing of the volume.Buddhist-Christian Studies: Why did you write Faith Among Faiths?James Fredericks: I wanted to help Christians think about the problems that the "pluralist" view of religious diversity poses for inter-religious dialogue.How does the book do that?By making a sustained criticism of the claim that religions are differing interpretations of the same transcendent "Reality." This notion is a problem for a religion of revelation, like Christianity, but also for a religion like Buddhism that has a sophisticated critique of metaphysics. Pluralist thinkers impose a meta-religious grand narrative on all the religions and demand that the religions conform to this grand narrative in the name of "tolerance."This kind of thinking has roots in the European Enlightenment and has affinities with some strands of Hindu thought, especially the "neo-Hindu" thinkers. I do not think that this approach fosters dialogue in depth. If Buddhism and Christianity are varying interpretations of the same ultimate "Reality," then what does Buddhism have to teach Christians that is of genuine theological importance? The obvious differences that distinguish Buddhism from Christianity are of little theological interest to Christians because they are of no soteriological consequence. The pluralist approach is a dead end for dialogue.And the way forward?What I call "comparative theology." I think of this as an alternative to what Christians call the "theology of religions."What's the difference?Theologies of religion interpret the meaning of other religious traditions from within the perspective of Christian tradition. Karl Rahner's theology of the anonymous Christian and Karl Barth's rejection of all religions as "unbelief" are both examples of a theology of religion. John Hick's pluralist model of religions is also a kind of theology of religions. This entire project has reached an impasse within Christianity. As an alternative, I propose that Christians recognize that Buddhism and Christianity [End Page 251] are linked by some significant similarities and distinguished from each other by significant differences.How does that break the impasse?Christians have something of genuine value to learn by entering humbly into dialogue with Buddhists. By taking differences seriously, dialogue becomes a way for Christians to do their own theology collaboratively with Buddhists. In the medieval period, Christians did theology in dialogue with Aristotle and Plato. Today, I want Christians to do theology in dialogue with Nagarjuna and Dogen. Therefore doing theology comparatively is to step beyond the notion of a theology of religions. Comparative theology does not begin with the assumption that Buddhism is a relatively obscured form of the same truth Christians affirm (Rahner) or that Buddhism and Christianity are relatively equal expressions of a truth that transcends them both (Hick). The purpose of dialogue is not to show how we are all really trying to say the same thing. ForChristians, at least, dialogue with Buddhists is a genuinely demanding way of doing theology.Any other reasons for the book?Yes. To promote friendships among Buddhists and Christians. These "inter-religious friendships" are a good way for Christians to practice their faith. My own friendships with Buddhists, both here in the USA and in Asia, are central to my spirituality and my work as a theologian. In a sense, I have never been in dialogue with "Buddhism." All my dialogues have been with actual Buddhists, with all their personal strengths and weaknesses, successes and failures. I am happy to say that, over the years, I have had some skillful teachers who have taught me not only the Dharma, but also taught me new ways to think about Christianity.Was it a difficult book to write?My book was written after years of dialogue with Buddhists and much research and... (shrink)

The shape of a life hypothesis holds that the temporal sequence of good or bad times in a life can itself be a valuable feature of that life. This is generally thought to be incompatible with additivism about lifetime well-being, which holds that lifetime well-being is fully determined by momentary well-being. This discussion examines Dale Dorsey’s recent argument that these views are in fact compatible. I argue that accepting the conjunction of these views requires stronger commitments than Dorsey recognizes. After (...) arguing that these commitments are problematic, I conclude that we should reject the compatibility claim. (shrink)

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)

Pre-existing medical conditions and co-infections are common to all human populations, although the natures of the pre-existing conditions and the types of co-infections vary. For these reasons, among others, the arrival of a highly infectious pathogenic agent may differentially affect the disease burden in different sub-populations, as a function of varying combinations of endemic disease, chronic disease, genetic or epigenetic vulnerabilities, compromised immunological status, and socially determined risk exposure. The disease burden may also vary considerably by age cohort and socio-economic (...) status. The social consequences of infection, the medical sequelae, and the paths of recovery from infection may also vary, according to these variables. As a result, different sub-populations may have different experiences of a disease process, including when and how an epidemic comes to an end. This essay suggests that historians' engagement with path-breaking biological and medical anthropological research will allow new approaches to understanding disease processes that will enrich the study of epidemics and their endings. It is organized in three sections. The first discusses some general approaches to and assumptions about epidemics that are used by many historians. The second introduces new perspectives on the study of historical epidemics opened up by the medical anthropological concept of syndemic disease interactions and by an engagement with biological scientific perspectives. It briefly discusses two rural epidemics-one of anemia caused by the syndemic interaction of hookworm and malaria co-infections in early 20th-century British Malaya, and the other of rebound infections caused by the loss of acquired immunity to falciparum malaria in mid-20th-century Liberia-that illustrate, respectively, the utility of the concept of syndemic disease interactions and the centrality of immunological status in understanding epidemic outbreaks in these discrete populations. The third section addresses some of the research considerations involved in moving beyond the single pathogen model of epidemic disease. (shrink)

Case studies and first-person stories about decision-making, written by professionals in the field, bring a uniquely personal touch to this valuable text.