Clinical trials of xenotransplantation may begin early in the next decade, with kidneys from genetically modified pigs transplanted into adult humans. If successful, transplanting pig hearts into children with advanced heart failure may be the next step. Typically, clinical trials have a specified end date, and participants are aware of the amount of time they will be in the study. This is not so with XTx. The current ethical consensus is that XTx recipients must consent to lifelong monitoring. While this (...) presents challenges to the right to withdraw in the adult population, additional and unanswered questions also linger in the paediatric population. In paediatric XTx, parents or guardians consent not only to the initial treatment of the child but also to lifelong monitoring, thus making a decision whose consequences will remain present as the child develops the capacity for assent, and finally the capacity for informed consent or refusal. This article presents and evaluates unanswered paediatric ethical questions in regard to the right to withdraw from XTx follow-up in the paediatric population. (shrink)

This book provides practical and research-based chapters that offer greater clarity about the particular kinds of teacher reflection that matter and avoids talking about teacher reflection generically, which implies that all kinds of reflection are of equal value.

Before God created did God have ideas in mind for particular things, kinds of things, properties of things, particular events, and laws of nature? At least since Augustine, theists have proposed differing answers. This paper is about a relatively recent theory, which holds that God constructs them when he creates the universe. James Ross, Brian Leftow, and Hugh McCann are its primary advocates. Since the shared features of their views do not pertain to the so-called “abstract objects” or to (...) the “necessary truths” of mathematics and logic, let us call this “divine possibility constructivism”, differentiating it from the theistic activism of Christopher Menzel and Thomas Morris and from the voluntarism of René Descartes—both of which could otherwise be construed as “constructivist”. According to Ross, Leftow, and McCann, God had nothing in mind before he created—which is to say that, before God created, God was not aware of possibilities for a universe. Rather, God’s being aware of any such possibilities is grounded only in God’s having constructed them ex nihilo. This paper shows that DPC is incoherent. (shrink)

This is a book about how we see: the environment around us (its surfaces, their layout, and their colors and textures); where we are in the environment; whether or not we are moving and, if we are, where we are going; what things are good for; how to do things (to thread a needle or drive an automobile); or why things look as they do.The basic assumption is that vision depends on the eye which is connected to the brain. The (...) author suggests that natural vision depends on the eyes in the head on a body supported by the ground, the brain being only the central organ of a complete visual system. When no constraints are put on the visual system, people look around, walk up to something interesting and move around it so as to see it from all sides, and go from one vista to another. That is natural vision—and what this book is about. (shrink)

Both the psychology of perception and the philosophy of perception seem to show a new face when the process is considered at its own level, distinct from that of sensation. Unfamiliar conceptions in physics, anatomy, physiology, psychology, and phenomenology are required to clarify the separation and make it plausible. But there have been so many dead ends in the effort to solve the theoretical problems of perception that radical proposals may now be acceptable. Scientists are often more conservative than philosophers (...) of science. I end, therefore, as I began, with a plea for help. (shrink)

This authoritative volume provides a comprehensive road map of the important and rapidly growing field of emotion regulation.

A provocative work by medical ethicist James Hughes, Citizen Cyborg argues that technologies pushing the boundaries of humanness can radically improve our quality of life if they are controlled democratically. Hughes challenges both the technophobia of Leon Kass and Francis Fukuyama and the unchecked enthusiasm of others for limitless human enhancement. He argues instead for a third way, "democratic transhumanism," by asking the question destined to become a fundamental issue of the twenty-first century: How can we use new cybernetic (...) and biomedical technologies to make life better for everyone? These technologies hold great promise, but they also pose profound challenges to our health, our culture, and our liberal democratic political system. By allowing humans to become more than human - "posthuman" or "transhuman" - the new technologies will require new answers for the enduring issues of liberty and the common good. What limits should we place on the freedom of people to control their own bodies? Who should own genes and other living things? Which technologies should be mandatory, which voluntary, and which forbidden? For answers to these challenges, Citizen Cyborg proposes a radical return to a faith in the resilience of our democratic institutions. (shrink)

Modern emotion theories emphasise the adaptive value of emotions. Emotions are by no means always helpful, however. They often must be regulated. The study of emotion regulation has its origins in the psychoanalytic and stress and coping traditions. Recently, increased interest in emotion regulation has led to crucial boundary ambiguities that now threaten progress in this domain. It is argued that distinctions need to be made between (1) regulation of emotion and regulation by emotion; (2) emotion regulation in self and (...) emotion regulation in others; and (3) conscious and nonconscious emotion regulation. Using a process model of emotion generation, this review considers promising research on basic processes and individual differences in emotion regulation and poses five theoretical challenges. (shrink)