Motivation has been the subject of much research in the sport psychology literature, whereas athlete mental health has received limited attention. Motivational complexities in elite sport are somewhat reflected in the mental health literature, where there is evidence for both protective and risk factors for athletes. Notably, few studies have linked motivation to mental health. Therefore, the key objective of this study was to test four mental health outcomes in the motivational sequence posited by the Hierarchical Model of Intrinsic and (...) Extrinsic Motivation: motivational climate  basic psychological needs  motivation  mental health outcomes. Elite team-sport athletes (140 females, 75 males) completed seven psychometric inventories of motivation-related and mental health variables. Overall, the athletes reported positive motivational patterns, with autonomous motivation and task climate being more prevalent than their less adaptive counterparts. Elevated depressive symptoms and poor sleep quality affected nearly half of the cohort. Structural equation modelling supported pathways between motivational climate, basic needs, motivation, and mood, depressive symptoms, sleep quality, and trait anxiety. Specifically, a task climate was positively associated with the three basic psychological needs, and an ego climate was positively associated with competence. Autonomy and relatedness had positive and negative associations with autonomous and controlled forms of motivation, respectively. Controlled motivation regulations were positively associated with the four mental health outcomes. Integrated regulation had a negative association with anxiety, and intrinsic regulation had a positive association with depressive symptoms. These findings highlight the complexities of and interrelations between motivation and mental health among athletes, and support the importance of considering mental health as an outcome of motivation. (shrink)

Ethical decision-making in public health rarely involves simply avoiding a bad choice in favor of a good choice. Instead, it requires policymakers to strike a balance among conflicting goals that are all good—goals such as the health of populations and individuals, knowledge gained through scientific research, autonomy, social justice, and the efficient use of limited resources. This balance can be elusive, and perfect examples are the legal instruments governing dual-use research, a term describing scientific endeavors meant to produce beneficial knowledge (...) or technology, but that could also be misapplied. Dual-use research of concern policies were implemented... (shrink)

The development of a defensible and fecund notion of emergence has been dogged by a number of threshold issues neatly highlighted in a recent paper by Jaegwon Kim. We argue that physicalist assumptions confuse and vitiate the whole project. In particular, his contention that emergence entails supervenience is contradicted by his own argument that the ‘microstructure’ of an object belongs to the whole object, not to its constituents. And his argument against the possibility of downward causation is question-begging and makes (...) false assumptions about causal sufficiency. We argue, on the contrary, for a rejection of the deeply entrenched assumption, shared by physicalists and Cartesians alike, that what basically exists are things (entities, substances). Our best physics tells us that there are no basic particulars, only fields in process. We need an ontology which gives priority to organization, which is inherently relational. Reflection upon the fact that all biological creatures are far-from-equilibrium systems, whose very persistence depend upon their interactions with their environment, reveals incoherence in the notion of an ‘emergence base’. (shrink)

Virgil, in his description of the establishment of a new city by Aeneas for those Trojans who wished to remain in Sicily, is thinking of the Roman practice of colonial foundation: ‘Meanwhile Aeneas marked out the city with the plough and allocated the houses ’. We may note the personal role of the founder, the ploughing of the ritual first furrow, the organized grants to the settlers and the equality of treatment implied in the use of lot . Virgil was (...) writing at the end of the first century B.C. at a time of great activity in land distribution, but the Romans had been founding colonies from the mid fourth century. Each colony involved the creation of an urban area and the settlement of people on the surrounding agricultural land, and so perpetuated the city state, which was central to ancient life and culture. Indeed a colony was a smaller image of Rome itself. In the early Republic, colonies, either of Latins or of Roman citizens, were established on the periphery of Roman territory, largely for military and strategic reasons. Between 200 and 173 B.C. more than 40,000 may have received plots of land, amounting to about 1,000 square miles of territory. Later, the motives for colonial foundations became more complex, being closely connected with increasing economic and political problems. There can have been few more important aspects in the development of colonies than the need to find land for discharged troops. These in the main were rank and file soldiers who would expect equal shares in land allocations. (shrink)

Virgil, in his description of the establishment of a new city by Aeneas for those Trojans who wished to remain in Sicily, is thinking of the Roman practice of colonial foundation: ‘Meanwhile Aeneas marked out the city with the plough and allocated the houses ’. We may note the personal role of the founder, the ploughing of the ritual first furrow, the organized grants to the settlers and the equality of treatment implied in the use of lot. Virgil was writing (...) at the end of the first century B.C. at a time of great activity in land distribution, but the Romans had been founding colonies from the mid fourth century. Each colony involved the creation of an urban area and the settlement of people on the surrounding agricultural land, and so perpetuated the city state, which was central to ancient life and culture. Indeed a colony was a smaller image of Rome itself. In the early Republic, colonies, either of Latins or of Roman citizens, were established on the periphery of Roman territory, largely for military and strategic reasons. Between 200 and 173 B.C. more than 40,000 may have received plots of land, amounting to about 1,000 square miles of territory. Later, the motives for colonial foundations became more complex, being closely connected with increasing economic and political problems. There can have been few more important aspects in the development of colonies than the need to find land for discharged troops. These in the main were rank and file soldiers who would expect equal shares in land allocations. (shrink)

Stereological techniques allow biologists to create quantitative, three-dimensional descriptions of biological structures from two- dimensional images of tissue viewed under the microscope. For example, they can accurately estimate the size of a particular organelle, the total length of a mass of capillaries, or the number of neurons or synapses in a particular region of the brain. This book provides a practical guide to designing and critically evaluating stereological studies of the nervous system and other tissues. It explains the basic concepts (...) behind design-based stereology and how to get started. Also included are detailed descriptions of how to prepare tissue appropriately, perform pilot studies and decide on the appropriate sampling strategy, and account for phenomena such as tissue shrinkage. Numerous examples of applications of stereological methods that are applicable to studies of the central system and a wide variety of other tissues are explained. The book is therefore essential reading for neurobiologists and cell biologists interested in generating accurate representations of cell and tissue architecture. (shrink)

The concepts of time and identity seem at once unproblematic and frustratingly difficult. Time is an intricate part of our experience -- it would seem that the passage of time is a prerequisite for having any experience at all -- and yet recalcitrant questions about time remain. Is time real? Does time flow? Do past and future moments exist? Philosophers face similarly stubborn questions about identity, particularly about the persistence of identical entities through change. Indeed, questions about the metaphysics of (...) persistence take on many of the complexities inherent in philosophical considerations of time. This volume of original essays brings together these two essentially related concepts in a way not reflected in the available literature, making it required reading for philosophers working in metaphysics and students interested in these topics. The contributors, distinguished authors and rising scholars, first consider the nature of time and then turn to the relation of identity, focusing on the metaphysical connections between the two, with a special emphasis on personal identity. The volume concludes with essays on the metaphysics of death, issues in which time and identity play a significant role. This groundbreaking collection offers both cutting-edge epistemological analysis and historical perspectives on contemporary topics. Contributors:_ _Harriet Baber, Lynne Rudder Baker, Ben Bradley, John W. Carroll, Reinaldo Elugardo, Geoffrey Gorham, Mark Hinchliff, Jenann Ismael, Barbara Levenbook, Andrew Light, Lawrence B. Lombard, Ned Markosian, Harold Noonan, John Perry, Harry S. Silverstein, Matthew H. Slater, Robert J. Stainton, Neil A. Tognazzini The hardcover edition does not include a dust jacket. (shrink)

THIS PAPER CONCERNS A CONTROVERSY about priorities between J. D. Forbes, Professor of Natural Philosophy at the University of Edinburgh, and the noted Swiss scientist Louis Agassiz, later to be a distinguished teacher at Harvard. Its origins lie in the visit which Forbes made at Agassiz' invitation to the Unteraar glacier in Switzerland, in the summer of 1841, during which a major topic of interest was their observations of the bandes bleues, markings in the ice previously little discussed. Both men, (...) in independent later publications, were to establish the importance of the bandes in the theory of glacial ice and its movement. The question of credit for the discovery, and priority in its publication, was unclear at the time and has remained so despite bitter debate. Examination of surviving papers in Great Britain and in Switzerland suggests that previous discussions have not closed the question,' and our purpose is to review the evidence and if possible to clarify the issue. (shrink)

A foundational human attraction to mammalian neoteny may be crucial for preservation of our own species, but it can be counterproductive in relationships between humans and other animals. The deeply rooted human psychological attraction to and preference for anthropomorphically viewed neotenic characteristics explains why some animals, whether endangered or not, receive far more public attention and scientific study than others. An understanding of the neoteny barrier makes it possible to find ways around it: The barrier may not be possible to (...) break, but it can be modified by scientific awareness of its existence and an alteration of public perception of value to include animals who would not, in neotenic terms, be considered cute. (shrink)

We investigate differences between a simple Dominance Principle applied to sums of fair prices for variables and dominance applied to sums of forecasts for variables scored by proper scoring rules. In particular, we consider differences when fair prices and forecasts correspond to finitely additive expectations and dominance is applied with infinitely many prices and/or forecasts.

In studies of early Christian thought, 'philosophy' is often a synonym for 'Platonism', or at most for 'Platonism and Stoicism'. Nevertheless, it was Aristotle who, from the sixth century AD to the Italian Renaissance, was the dominant Greek voice in Christian, Muslim and Jewish philosophy. Aristotle and Early Christian Thoughtis the first book in English to give a synoptic account of the slow appropriation of Aristotelian thought in the Christian world from the second to the sixth century. Concentrating on the (...) great theological topics - creation, the soul, the Trinity, and Christology - it makes full use of modern scholarship on the Peripatetic tradition after Aristotle, explaining the significance of Neoplatonism as a mediator of Aristotelian logic. While stressing the fidelity of Christian thinkers to biblical presuppositions which were not shared by the Greek schools, it also describes their attempts to overcome the pagan objections to biblical teachings by a consistent use of Aristotelian principles, and it follows their application of these principles to matters which lay outside the purview of Aristotle himself. This volume offers a valuable study not only for students of Christian theology in its formative years, but also for anyone seeking an introduction to the thought of Aristotle and its developments in Late Antiquity. by a consistent use of Aristotelian principles, and it follows their application of these principles to matters which lay outside the purview of Aristotle himself. This volume offers a valuable study not only for students of Christian theology in its formative years, but also for anyone seeking an introduction to the thought of Aristotle and its developments in Late Antiquity. (shrink)

Debates over health care have focused for so long on economics that the proper goals for medicine seem to be taken for granted; yet problems in health care stem as much from a lack of agreement about the goals and priorities of medicine as from the way systems function. This book asks basic questions about the purposes and ends of medicine and shows that the answers have practical implications for future health care delivery, medical research, and the education of medical (...) students. The Hastings Center coordinated teams of physicians, nurses, public health experts, philosophers, theologians, politicians, health care administrators, social workers, and lawyers in fourteen countries to explore these issues. In this volume, they articulate four basic goals of medicine — prevention of disease, relief of suffering, care of the ill, and avoidance of premature death — and examine them in light of the cultural, political, and economic pressures under which medicine functions. In reporting these findings, the contributors touch on a wide range of diverse issues such as genetic technology, Chinese medicine, care of the elderly, and prevention and public health. The Goals of Medicine clearly demonstrates the importance of clarifying the purposes of medicine before attempting to change the economic and organizational systems. It warns that without such examination, any reform efforts may be fruitless. (shrink)

This paper defends an in principle understanding of the authority of persons over themselves and, in consequence, argues for significant limits on morally permissible state authority. It also defends an account of the limits of permissible state action that distinguishes between the ability of persons to convey authority to common projects and what may be judged virtuous, good, safe, or proper to do. In terms of organ transplantation policy, it concludes that it is morally acceptable, and should be legally permissible, (...) for individuals to sell one of their kidneys while living, pocketing the cash to use as that person sees fit to advance their own understanding of their own best interests. Morally objectionable policy proposals, I argue, are not those that encourage individuals to sell a redundant kidney while living or families to sell the organs of a recently deceased loved one, but those that seek coercively to confiscate the organs of the recently deceased. Recognizing the authority of persons over themselves, and their ability to convey moral authority to common projects, including the sale of human organs for transplantation, would shed light on the medical marketplace and clarify public policy, while increasing the efficiency and effectiveness of procuring human organs for transplantation. (shrink)

Seeing and hearing God in the Old Testament -- Seeing and hearing God in the New Testament -- Word and image in classical Greek philosophy -- Philosophers and sophists of the early Roman era -- Image, text and incarnation in the second century -- Image, text and incarnation in the third century -- Neoplatonism and the arts -- Image, text and incarnation in the fourth century -- Myth and text in proclus -- Christianity of Christian Platonism.

Jerry Fodor is one of the most important philosophers of mind in recent decades. He has done much to set the agenda in this field and has had a significant influence on the development of cognitive science. Fodor's project is that of constructing a physicalist vindication of folk psychology and so paving the way for the development of a scientifically respectable intentional psychology. The centrepiece of his engagement in this project is a theory of the cognitive mind, namely, the computational (...) theory of mind, which postulates the existence of a language of thought. Fodor: Language, Mind and Philosophy is a comprehensive study of Fodor's writings. Individual chapters are devoted to each of the major issues raised by his work and contain extensive discussion of his relationships to key developments in cognitive science and to the views of such philosophical luminaries as Dennett, Davidson and Searle. (shrink)

The legal basis of informed consent in Texas may on first examination suggest an unqualified affirmation of persons as the source of authority over themselves. This view of individuals in the practice of informed consent tends to present persons outside of any social context in general and outside of their families in particular. The actual functioning of law and medical practice in Texas, however, is far more complex. This study begins with a brief overview of the roots of Texas law (...) and public policy regarding informed consent. This surface account is then contrasted with examples drawn from the actual functioning of Texas law: Texas legislation regarding out-of-hospital do-not-resuscitate (DNR) orders. As a default approach to medical decision-making when patients lose decisional capacity and have failed to appoint a formal proxy or establish their wishes, this law establishes a defeasible presumption in favor of what the law characterizes as “qualified relatives” who can function as decision-makers for those terminal family members who lose decisional capacity. The study shows how, in the face of a general affirmation of the autonomy of individuals as if they were morally and socially isolated agents, space is nevertheless made for families to choose on behalf of their own members. The result is a multi-tier public morality, one affirming individuals as morally authoritative and the other recognizing the decisional standing of families. (shrink)

It has long been known that the practice of testing all hypotheses at the same level , regardless of the distribution of the data, is not consistent with Bayesian expected utility maximization. According to de Finetti’s “Dutch Book” argument, procedures that are not consistent with expected utility maximization are incoherent and they lead to gambles that are sure to lose no matter what happens. In this paper, we use a method to measure the rate at which incoherent procedures are sure (...) to lose, so that we can distinguish slightly incoherent procedures from grossly incoherent ones. We present an analysis of testing a simple hypothesis against a simple alternative as a case‐study of how the method can work. (shrink)

This paper defends an in principle understanding of the authority of persons over themselves and, in consequence, argues for significant limits on morally permissible state authority. It also defends an account of the limits of permissible state action that distinguishes between the ability of persons to convey authority to common projects and what may be judged virtuous, good, safe, or proper to do. In terms of organ transplantation policy, it concludes that it is morally acceptable, and should be legally permissible, (...) for individuals to sell one of their kidneys while living, pocketing the cash to use as that person sees fit to advance their own understanding of their own best interests. Morally objectionable policy proposals, I argue, are not those that encourage individuals to sell a redundant kidney while living or families to sell the organs of a recently deceased loved one, but those that seek coercively to confiscate the organs of the recently deceased. Recognizing the authority of persons over themselves, and their ability to convey moral authority to common projects, including the sale of human organs for transplantation, would shed light on the medical marketplace and clarify public policy, while increasing the efficiency and effectiveness of procuring human organs for transplantation. (shrink)

The essays in this issue of The Journal of Medicine and Philosophy explore an innovative voucher program for encouraging kidney donation. Discussions cluster around a number of central moral and political/theoretical themes: What are the direct and indirect health care costs and benefits of such a voucher system in human organs? Do vouchers lead to more effective and efficient organ procurement and allocation or contribute to greater inequalities and inefficiencies in the transplantation system? Do vouchers contribute to the inappropriate commodification (...) of human body parts? Is there a significant moral difference between such a voucher system and a market in human organs for transplantation? This paper argues that while kidney vouchers constitute a step in the right direction, fuller utilization of market-based incentives, including, but not limited to, barter exchanges, would save more lives and further reduce human suffering. (shrink)

This paper critically explores key aspects of the gulf between traditional Christian bioethics and the secular moral reflections that dominate contemporary bioethics. For example, in contrast to traditional Christian morality, the established secular bioethics judges extramarital sex acts among consenting persons, whether of the same or different sexes, as at least morally permissible, affirms sexual freedom for children to develop their own sexual identity, and holds the easy availability of abortion and infanticide as central to the liberty interests of women. (...) Secular bioethics seeks to separate children from the authority of their parents, placing children themselves as in authority to make their own judgments about appropriate lifestyle choices, including sexual behaviors. As I argue, however, absent God, there exists no standpoint outside of our own cultural sociohistorically conditioned understanding from which to communicate any deeper perspective of reality or the bioethics that such a perspective would secure. Consequently, rather than discerning moral truth, secular bioethics merely affirms its own particular cultural sociohistorically conditioned ideological perspective. It is a social and political worldview bereft of definitive moral foundation, independent moral authority, or unambiguous content. (shrink)

Several axiom systems for preference among acts lead to a unique probability and a state-independent utility such that acts are ranked according to their expected utilities. These axioms have been used as a foundation for Bayesian decision theory and subjective probability calculus. In this article we note that the uniqueness of the probability is relative to the choice of whatcounts as a constant outcome. Although it is sometimes clear what should be considered constant, in many cases there are several possible (...) choices. Each choice can lead to a different "unique" probability and utility. By focusing attention on statedependent utilities, we determine conditions under which a truly unique probability and utility can be determined from an agent's expressed preferences among acts. Suppose that an agent's preference can be represented in terms of a probability P and a utility U.That is, the agent prefers one act to another iff the expected utility of that act is higher than that of the other. There are many other equivalent representations in terms of probabilities Q, which are mutually absolutely continuous with P, and state-dependent utilities V, which differ from U by possibly different positive affine transformations in each state of nature. We describe an example in which there are two different but equivalent state-independent utility representations for the same preference structure. They differ in which acts count as constants. The acts involve receiving different amounts of one or the other of two currencies, and the states are different exchange rates between the currencies. It is easy to see how it would not be possible for constant amounts of both currencies to have simultaneously constant values across the differentstates. Savage (1954, sec. 5.5) discovered a situation in which two seemingly equivalent preference structures are represented by different pairs of probability and utility. He attributed the phenomenon to the construction of a "small world." We show that the small world problem is just another example of two different, but equivalent, representations treating different actsas constants. Finally, we prove a theorem (similar to one of Karni 1985) that shows how to elicit a unique state-dependent utility and does not assume that there are prizes with constant value. To do this, we define a new hypothetical kind of act in which both the prize to be awarded and the state of nature are determined by an auxiliary experiment. (shrink)

Organ procurement policy from the recently deceased recasts families into gatekeepers of a scarce medical resource. To the frustration of organ procurement teams, families do not always authorize organ donation. As a result, efforts to increase the number of organs available for transplantation often seek to limit the authority of families to refuse organ retrieval. For example, in some locales if a deceased family member has satisfied the legal conditions for first-person prior assent, a much looser and easier standard to (...) satisfy than informed consent, organ retrieval may proceed despite the family’s objections. Some countries have replaced voluntary consent to organ donation with forms of organ conscription. Often referred to under the misnomer “presumed consent,” such policies legalize the harvesting of organs at death, unless individuals exercise official options to opt out. As this article explores, however, there are good grounds for affirming the authority of the family to consent to or to deny organ donation on behalf of recently deceased family members, as well as to reject first-person assent and “presumed consent” policies of organ procurement. Insofar as individuals have failed clearly and competently to provide informed consent to organ donation, moral authorization for the use of the person and his body ought to be grounded on the foundational authority of the family, rather than the state’s supposed interests in obtaining organs for transplantation. (shrink)

This paper challenges the foundational claim that the human family is no more than a social construction. It advances the position that the family is a central category of experience, being, and knowledge. Throughout, the analysis argues for the centrality of the family for human flourishing and, consequently, for the importance of sustaining family-oriented practices within social policy, such as more family-oriented approaches to consent to medical treatment. Where individually oriented approaches to medical decision-making accent an ethos of isolated personal (...) autonomy family-oriented approaches acknowledge the central social and moral reality of the family. I argue that the family ought to be appreciated as more than a mere network of personal relations and individual undertakings; the family possesses a being that is social and moral such that it realizes a particular structure of human good and sustains the necessary conditions for core areas of human flourishing. Moreover, since the family exists as a nexus of face-to-face relationships, the consent of persons, including adults, to be members of a particular family, subject to its own respective account of family sovereignty, is significantly more amply demonstrated than the consent of citizens to be under the authority of a particular state. As a result, in the face of a general Western bioethical affirmation of the autonomy of individuals, as if adults and children were morally and socially isolated agents, this paper argues that social space must nevertheless be made for families to choose on behalf of their own members. (shrink)

Medicalization was the theme of the 29th European Conference on Philosophy of Medicine and Health Care that included a panel session on the DSM and mental health. Philosophical critiques of the medical model in psychiatry suffer from endemic assumptions that fail to acknowledge the real world challenges of psychiatric nosology. The descriptive model of classification of the DSM 3-5 serves a valid purpose in the absence of known etiologies for the majority of psychiatric conditions. However, a consequence of the “atheoretical” (...) approach of the DSM is rampant epistemological confusion, a shortcoming that can be ameliorated by importing perspectives from the work of Jaspers and McHugh. Finally, contemporary psychiatry’s over-reliance on neuroscience and pharmacotherapy has led to a reductionist agenda that is antagonistic to the inherently pluralistic nature of psychiatry. As a result, the field has suffered a loss of knowledge that may be difficult to recover. (shrink)

This study explores the ways in which adolescents, even so-called “mature minors”, lack adequate development of the intellectual, affective, and emotional capacities necessary morally to consent to medical research on their own behalf. The psychological and neurophysiological data regarding brain maturation supports the conclusion that adolescents are qualitatively different types of agents than mature adults. They lack full adult maturity and personal agency. As a result, in addition to the usual requirements for IRB approval, one or both parents, or a (...) legal guardian, should provide informed consent for minor children to participate in medical research. (shrink)

In recent decades cognitive science has revolutionised our understanding of the workings of the human mind. Philosophy has made a major contribution to cognitive science and has itself been hugely influenced by its development. This dynamic book explores the philosophical significance of cognitive science and examines the central debates that have enlivened its history. In a wide-ranging and comprehensive account of the topic, philosopher M.J. Cain discusses the historical origins of cognitive science and its philosophical underpinnings; the nature and role (...) of representations in cognition; the architecture of the mind and the modularity thesis; the nature of concepts; knowledge of language and its acquisition; perception; and the relationship between the brain and cognition. Cain draws upon an extensive knowledge of empirical developments and their philosophical interpretation. He argues that although the field has generated some challenging new views in recent years, many of the core ideas that initiated its birth are still to be taken seriously. Clearly written and incisively argued, The Philosophy of Cognitive Science will appeal to any student or researcher interested in the workings of the mind. (shrink)

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The biotechnology industry's intellectual property claims contribute to a subtle but not insignificant encroachment of commodification within health care. Drawing on the conceptual framework of Margaret Jane Radin, I argue that patent claims on human biological materials may commodify that with which our personhood and individuality is intertwined but that such commodification is broad and incomplete. Patents on nonhuman biological organisms contribute to a more materialistic understanding of them but do not significantly change our relationship to them. The systemic effects (...) of biotechnology's commodification within health care are various and may compromise the goal of good health. The morally problematic aspects of patent claims entail certain obligations to inhibit commodification from becoming more egregious, but on balance, those aspects are currently insufficient to justify denying the benefits the patent system promotes. (shrink)

While many have suggested that to withdraw medical interventions is ethically equivalent to withholding them, the moral complexity of actually withdrawing life supportive interventions from a patient cannot be ignored. Utilizing interplay between expository and narrative styles, and drawing upon our experiences with patients, families, nurses, and physicians when life supports have been withdrawn, we explore the changeable character of boundaries in end-of-life situations. We consider ways in which boundaries imply differences – for example, between cognition and performance – and (...) how the encounter with boundaries can generate altered meanings important for understanding decisions and actions in these contexts. We conclude that the reliance on mere roles to support the moral weight of withdrawing medical interventions is inadequate. Roles that lead us to such moments are exceeded by the responsibility encountered in such moments. And here, we suggest, is the momentous character of withdrawal: it presents the grave astonishment, the trembling awe, in the not-being-there of the other in death. (shrink)

Political metaphors do more than punch up messages; they can systematically bias observers’ attitudes toward the issue at hand. What, then, is an effective strategy for counteracting a metaphor’s influence? One could ignore or criticize the metaphor, emphasizing strong counterarguments directly pertaining to the target issue. Yet if observers rely on it to understand a complicated issue, they may be reluctant to abandon it. In this case, a “metaphor extension” strategy may be effective: Encourage observers to retain the metaphor but (...) reinterpret its meaning by considering other, less obvious implications. The current studies support this claim. Under conditions where participants gained a strong epistemic benefit from a rhetorical metaphor, they were more persuaded by a rebuttal that extended that metaphor. The studies use converging operational definitions of epistemic benefit and offer insight into how political attitudes are made and unmade. (shrink)