Context: The dominant approach to the study of perception is representational/computational, with an emphasis on the achievements of the brain and the nervous system, which are taken to construct internal models of the world. Alternatives include ecological, embedded, embodied, and enactivist approaches, all of which emphasize the centrality of action in understanding perception. Problem: Despite sharing many theoretical commitments that lead to a rejection of the classical approach, the alternatives are characterized by important contrasts and points of divergence. Here we (...) focus on the enactive and ecological approaches, in particular, on how they construe the status of the environment and the content of perception. Method: We begin with a review of James Gibson’s ecological psychology, highlighting it as a psychology for all organisms not just humans. Against this backdrop, we consider enactivist arguments against direct perception - a central assertion of the ecological approach - and in favor of interpreting the activity of perceptual agents as a kind of construction of a perceptually meaningful world. Results: We assess the merits of this interpretation and we conclude that it cannot be grounded on fundamental principles such as thermodynamics and organism-environment mutuality. Implications: As a consequence, enactivism remains close to representationalism and entails a form of dualism. Constructivist content: We advance a criticism of the constructivist foundations of the enactive approach to perception. Perception-action mutuality at the heart of enactivism does not require mental construction; indeed, perception-action mutuality obviates construction. (shrink)

Upshot: Gibsonian and enactivist thinkers appear to diverge primarily with respect to the emphasis placed on the contributions of the organism to perception-action. Enactivists claim that a fundamental asymmetry in the organism-environment relationship should be credited for the existence of meaning in the world. Gibsonians counter that theory must reckon with both the asymmetry and symmetry between organism and environment as well as with the role of specificational information in underwriting their coordination.

In moral case deliberation (MCD), healthcare professionals meet to reflect upon their moral questions supported by a structured conversation method and non-directive conversation facilitator. An increasing number of Dutch healthcare institutions work with MCD to (1) deal with moral questions, (2) improve reflection skills, interdisciplinary cooperation and decision-making, and (3) develop policy. Despite positive evaluations of MCD, organization and implementation of MCD appears difficult, depending on individuals or external experts. Studies on MCD implementation processes have not yet been published. The (...) aim of this study is to describe MCD implementation processes from the perspective of nurses who co-organize MCD meetings, so called ‘ local coordinators ’. Various qualitative methods were used within the framework of a responsive evaluation research design. The results demonstrate that local coordinators work hard on the pragmatic implementation of MCD. They do not emphasize the ethical and normative underpinnings of MCD, but create organizational conditions to foster a learning process, engagement and continuity. Local coordinators indicate MCD needs firm back-up from management regulations. These pragmatic action-oriented implementation strategies are as important as ideological reasons for MCD implementation. Advocates of clinical ethics support should pro-actively facilitate these strategies for both practical and ethical reasons. (shrink)

Hooglands commentaar op mijn ‘Pluralisme’ komt hierop neer dat levensbeschouwelijke neutraliteit niet mogelijk is, noch voor de overheid, noch voor de individuele burger. We kunnen geen radicale buitenstaanderspositie innemen tegenover de levensbeschouwing die we erop nahouden. Dat zou een vorm van hybris zijn. Wie niettemin levensbeschouwelijke neutraliteit bepleit en deze identificeert met tolerantie voor de levensbeschouwingen van anderen, pretendeert in feite dat het eigen tolerante standpunt moreel superieur is aan het standpunt van al diegenen die aan hun levensbeschouwing vastgeklonken zitten. (...) Dat is moreel verwerpelijk. (shrink)

Moral case deliberation (MCD) is a form of clinical ethics support in which the ethicist as facilitator aims at supporting professionals with a structured moral inquiry into their moral issues from practice. Cases often affect clients, however, their inclusion in MCD is not common. Client participation often raises questions concerning conditions for equal collaboration and good dialogue. Despite these questions, there is little empirical research regarding client participation in clinical ethics support in general and in MCD in particular. This article (...) aims at describing the experiences and processes of two MCD groups with client participation in a mental healthcare institution. A responsive evaluation was conducted examining stakeholders’ issues concerning client participation. Findings demonstrate that participation initially creates uneasiness. As routine builds up and client participants meet certain criteria, both clients and professionals start thinking beyond ‘us-them’ distinctions, and become more equal partners in dialogue. Still, sentiments of distrust and feelings of not being safe may reoccur. Client participation in MCD thus requires continuous reflection and alertness on relational dynamics and the quality of and conditions for dialogue. Participation puts the essentials of MCD (i.e., dialogue) to the test. Yet, the methodology and features of MCD offer an appropriate platform to introduce client participation in healthcare institutions. (shrink)

High-dose chemotherapy and autologous stem cell transplantation is used to treat some advanced malignancies. It is a traumatic procedure, with a high complication rate and significant mortality. ASCT patients and their carers draw on many sources of information as they seek to understand the procedure and its consequences. Some seek information from beyond orthodox medicine. Alternative beliefs and practices may conflict with conventional understanding of the theory and practice of ASCT, and ‘contested understandings’ might interfere with patient adherence to the (...) strict and demanding protocols required for successful ASCT.The present study, conducted in Sydney, Australia, examines narrative-style interviews with 10 sequentially recruited ASCT patients and nine of their carers conducted at the time of transplant and three months later. Transcripts were read for instances of mention of alternative advice, and for instances of contested understanding of information relevant to the transplant.Patients and carer pairs expressed closely concordant views about alternative advice. Five pairs were consulting alternative practitioners. Contested understanding was expressed in four domains—understandings of the transplant itself and its underlying theory, of the relationship between the components of the ‘transplant’, of the nature and role of stem cells, and of beliefs about bodily function and life-style. Contested understandings of the transplant treatment were expressed as predominantly personal interpretations of orthodox informationPatients and carers seemed to recognise that alternative and conventional systems were discordant, yet they were able to separate the two, and adhere to each practice without prejudicing their medical treatment. A single case of late, post-transplant repudiation of Western medicine is discussed to emphasise some of the possible determinants of dissonance when it does occur. (shrink)

Patients in a vegetative state/ unresponsive wakefulness syndrome (VS/UWS) pose ethical dilemmas to those involved. Many conflicts occur between professionals and families of these patients. In the Netherlands physicians are supposed to withdraw life sustaining treatment once recovery is not to be expected. Yet these patients have shown to survive sometimes for decades. The role of the families is thought to be important. The aim of this study was to make an inventory of the professional perspective on conflicts in long-term (...) care of patients in VS/UWS. A qualitative study of transcripts on 2 Moral Deliberations (MD’s) in 2 cases of patients in VS/UWS in long-term care facilities. Six themes emerged: 1) Vision on VS/UWS; 2) Treatment and care plan; 3) Impact on relationships; 4) Feelings/attitude; 5) Communication; 6) Organizational aspects. These themes are related to professionals and to what families had expressed to the professionals. We found conflicts as well as contradictory feelings and thoughts to be a general feature in 4 of these themes, both in professionals and families. Conflicts were found in several actors: within families concerning all 6 themes, in nurse teams concerning the theme treatment and care plan, and between physicians concerning all 6 themes. Different visions, different expectations and hope on recovery, deviating goals and contradictory feelings/thoughts in families and professionals can lead to conflicts over a patient with VS/UWS. Key factors to prevent or solve such conflicts are a carefully established diagnosis, clarity upon visions, uniformity in treatment goals and plans, an open and empathic communication, expertise and understanding the importance of contradictory feelings/thoughts. Management should bridge conflicts and support their staff, by developing expertise, by creating stability and by facilitating medical ethical discourses. Shared compassion for the patient might be a key to gain trust and bridge the differences from non-shared to shared decision making. (shrink)

This paper develops an incomplete information model of extended deterrence relationships. It postulates players who are fully informed about the costs of war and all other relevant variables, save for the values their opponents place on the issues at stake, i.e., the pawn. We provide consistent and intuitively satisfying parallel definitions for two types of players, Hard and Soft, in terms of the parameters of our model. We also answer several particular questions about the strategy choices of players in an (...) extended deterrence relationship and, by identifying all the Perfect Bayesian Equilibria of the game model we construct, specify typical behavior patterns.Our most general finding is that an Extended Deterrence Game always has a unique Perfect Bayesian Equilibrium with a rather simple form. A challenger initiates for certain if the pawn is valuable enough to it and never challenges otherwise, Likewise, a defender always resists if the pawn is valuable enough and never resists otherwise. (shrink)

Vascular calcifications are the consequence of several pathological conditions such as atherosclerosis, diabetes, hypercholesterolemia and chronic renal insufficiency. They are associated with risks of amputation, ischemic heart disease, stroke and increased mortality. A growing body of evidence indicates that vascular smooth muscle cells (VSMCs) undergo chondrogenic commitment eventually leading to vascular calcification, by mechanisms similar to those governing ossification in the cartilage growth plate. Our knowledge of the formation of cartilage growth plate can therefore help us to understand why and (...) how arteries calcify and, consequently, develop new therapeutic strategies. Reciprocally, thorough consideration of the events leading to ectopic chondrocyte differentiation appears crucial to further increase our understanding of growth plate formation. In this context, we will review the effects of known or suspected factors that promote chondrogenic differentiation in growth plate and arteries. BioEssays 27:708–716, 2005. © 2005 Wiley Periodicals, Inc. (shrink)