This book provides an overview of behavioral decision theory and related research findings. In brief, behavioral decision theory is a general term for descriptive theories to explain the psychological knowledge related to decision-making behavior. It is called a theory, but actually it is a combination of various psychological theories, for which no axiomatic systems, such as the utility theory widely used in economics, have been established; it is often limited to qualitative knowledge. However, as suggested in (...) the studies of H. A. Simon, who won the Nobel Prize for Economics in 1978, and D. Kahneman, who won the prize in 2002, the psychological methodology and knowledge of behavioral decision theory have been applied widely in such fields as economics, business administration, and engineering, and are expected to become more useful in the future. This book explains various behavioral decision theories related to decision-making processes. Numerous models have been proposed to explain the psychological processes related to such a selection of decision strategies, and this book also introduces some new models that are useful to explain decision-making processes. The book concludes with speculation about the future of modern behavioral decision theories while referring to their relation to fields associated with neuroscience, such as neuroeconomics, that have been developed in recent years. In addition, each chapter includes a bibliography that can be referred to when studying more details related to behavioral decision theory. Reading this book requires no advanced expertise; nonetheless, an introductory knowledge of psychology, business administration, and economics, and approximately a high school graduate’s level of mathematics should facilitate the reader’s comprehension of the content. (shrink)

Decision theory has at its core a set of mathematical theorems that connect rational preferences to functions with certain structural properties. The components of these theorems, as well as their bearing on questions surrounding rationality, can be interpreted in a variety of ways. Philosophy’s current interest in decision theory represents a convergence of two very different lines of thought, one concerned with the question of how one ought to act, and the other concerned with the question of what (...) action consists in and what it reveals about the actor’s mental states. As a result, the theory has come to have two different uses in philosophy, which we might call the normative use and the interpretive use. It also has a related use that is largely within the domain of psychology, the descriptive use. This essay examines the historical development of decision theory and its uses; the relationship between the norm of decision theory and the notion of rationality; and the interdependence of the uses of decision theory. (shrink)

Causal decision theory (CDT) cares only about the effects of a contemplated act, not its causes. The article constructs a case in which CDT consequently recommends a bet that the agent is certain to lose, rather than a bet that she is certain to win. CDT is plainly giving wrong advice in this case. It therefore stands refuted. 1 The Argument2 The Argument in More Detail2.1 The betting mechanism2.2 Soft determinism2.3 The content of P 2.4 The argument again3 The (...) Descriptive Premise3.1 Causal decision theory3.2 Causal decision theory prefers A14 The Normative Premise5 Objections5.1 Table 1 and Table 2 are misleading5.2 The agency theory of causation5.3 The payment mechanism5.4 Newcomb’s problem5.5 Against the normative premise5.6 Drop soft determinism. (shrink)

This paper is about two requirements on wish reports whose interaction motivates a novel semantics for these ascriptions. The first requirement concerns the ambiguities that arise when determiner phrases, such as definite descriptions, interact with ‘wish’. More specifically, several theorists have recently argued that attitude ascriptions featuring counterfactual attitude verbs license interpretations on which the determiner phrase is interpreted relative to the subject’s beliefs. The second requirement involves the fact that desire reports in general require decision-theoretic notions for their (...) analysis. The current study is motivated by the fact that no existing account captures both of these aspects of wishing. I develop a semantics for wish reports that makes available belief-relative readings but also allows decision-theoretic notions to play a role in shaping the truth conditions of these ascriptions. The general idea is that we can analyze wishing in terms of a two-dimensional notion of expected utility. (shrink)

This up-to-date introduction to decision theory offers comprehensive and accessible discussions of decision-making under ignorance and risk, the foundations of utility theory, the debate over subjective and objective probability, Bayesianism, causal decision theory, game theory, and social choice theory. No mathematical skills are assumed, and all concepts and results are explained in non-technical and intuitive as well as more formal ways. There are over 100 exercises with solutions, and a glossary of key terms and concepts. An emphasis (...) on foundational aspects of normative decision theory (rather than descriptive decision theory) makes the book particularly useful for philosophy students, but it will appeal to readers in a range of disciplines including economics, psychology, political science and computer science. • Has over 100 end of chapter review questions and exercises with solutions • Includes a chapter on how to draw a decision matrix • Explains the link between individual decision making, game theory and social choice theory Contents Preface; 1. Introduction; 2. The decision matrix; 3. Decisions under ignorance; 4. Decisions under risk; 5. Utility; 6. The mathematics of probability; 7. The philosophy of probability; 8. Why should we accept the preference axioms; 9. Causal vs. evidential decision theory; 10. Bayesian vs. non-Bayesian decision theory; 11. Game theory I: basic concepts and zero sum games; 12. Game theory II: nonzero sum and co-operative games; 13. Social choice theory; 14. Overview of descriptive decision theory; Appendix A. Glossary; Appendix B. Proof of the von Neumann-Morgenstern theorem; Further reading; Index. (shrink)

In this paper we discuss how Causal Decision Theory should be modified to handle a class of problematic cases involving deterministic laws. Causal Decision Theory, as it stands, is problematically biased against your endorsing deterministic propositions (for example it tells you to deny Newtonian physics, regardless of how confident you are of its truth). Our response is that this is not a problem for Causal Decision Theory per se, but arises because of the standard method for assessing (...) the truth of certain counterfactuals. The truth of deterministic laws is `modally fragile' on the standard semantics for counterfactuals: if determinism is true and you were to do otherwise, the laws would be different. We provide two ways of avoiding this problem: 1) supplement the standard semantics for counterfactuals with impossible worlds, or 2) introduce rigid designators into the description of problematic decision situations. We argue that both of these approaches are well-motivated and can be readily incorporated into Lewisian Causal Decision Theory. (shrink)

The existence of a transitive, complete, and weakly independent relation on the full set of gambles implies the existence of a non-Ramsey set. Therefore, each transitive and weakly independent relation on the set of gambles either is incomplete or does not have an explicit description. Whatever tools decision theory makes available, there will always be decision problems where these tools fail us. In this sense, decision theory remains incomplete.

This chapter contains sections titled: The Theory of von Neumann and Morgenstern Rational Choice Theory Prescription and Description Ramsey's Theory Dutch Books and the Epistemic Objection Savage's Theory What is Preference and Why is it More Basic than Qualitative Probability? Context Freedom and the Transitivity of Preference The Causal Independence of Acts and Events The Constant Act Problem Allais's and Ellsberg's Examples Conclusion.

:This paper explores the contrast between mentalistic and behaviouristic interpretations of decision theory. The former regards credences and utilities as psychologically real, while the latter regards them as mere representations of an agent's preferences. Philosophers typically adopt the former interpretation, economists the latter. It is argued that the mentalistic interpretation is preferable if our aim is to use decision theory for descriptive purposes, but if our aim is normative then the behaviouristic interpretation cannot be dispensed with.

The evolution of the understanding of evidence-based proof and decision processes in the law, especially criminal law, and standards of proof in this area, has a long-standing and controversial history. Competing accounts cause the legal scholarship to engage in critical and thoughtful exchanges. Some of the divergent views reflect different methodological perspectives similarly recognized in other fields, such as applied psychology and economy, and the broader interdisciplinary research fields of judgment and decision-making, system analysis and decision science. (...) One such methodological perspective asserts that accounts of juridical proof should provide a description and explanation of how the legal system actually works as a whole. Other—more mathematical and analytical accounts—concentrate on how, ideally, legal decision-making under uncertainty ought to be made in order be considered sensible. This paper focuses on the relative plausibility account advocated by Professors Allen and Pardo as an example of the former perspective. Its logical structure and argumentative implications are analysed using elements of decision theory, which is the prime representative of the latter, more mathematical approach to legal proof. Using formal diagrammatic schemes to depict the structural relationships between the core elements of the two accounts, it is demonstrated in what sense they can be considered logically related and congruent. The demonstration shows that the principal disagreements among the proponents of the two examined theories derive from differences in the criteria used to judge the adequacy of competing accounts of legal decision-making, and the level of formalization of the bases of decisions in each candidate account. This structural analysis supports the view that adherence to one or the other of the examined perspectives does not imply a contradiction, but reflects the coverage of different aspects of the same overall decision architecture. Using decision-theoretic notions, our analyses also provide a way to explain RP decisions through an explicit criterion, thus providing a reply to the recurrent critique that RP theory lacks specific means to justify its decisional framework. (shrink)

An alleged counterexample to causal decision theory, put forward by Andy Egan, is studied in some detail. It is argued that Egan rejects the evaluation of causal decision theory on the basis of a description of the decision situation that is different from—indeed inconsistent with—the description on which causal decision theory makes its evaluation. So the example is not a counterexample to causal decision theory. Nevertheless, the example shows that causal decision theory can recommend (...) unratifiable acts which presents a problem in the dynamics of intentions. It is argued that we can defuse this problem if we hold that decision theory is a theory of rational decision making rather than a theory of rational acts. It is shown how decisions can have epistemic side-effects that are not mediated by the act and that there are cases where one can only bring oneself to perform the best act by updating by imaging rather than by conditioning. This provides a pragmatic argument for updating by imaging rather than by conditioning in these cases. (shrink)

Decision theory aims at explaining and predicting rational choice behavior. But ample empirical evidence suggests that descriptively, people’s actual choices do not conform to its predictions in various ways. Some of the counter-evidence, such as anomaly cases proposed by Amartya Sen, challenges even the normative adequacy of decision theory. My dissertation defends it as a normative theory while also offering a novel explanation of why it fails descriptively. Contrary to the Sen-style critique, I argue that decision theory (...) is unimpeachable as a norm or logic of choice. Human decisions do not range over the kinds of objects that philosophers and economists normally assume that they range over. Instead, they range over much finer grained outcomes, what I call “holistic outcomes.” A holistic outcome reflects everything that affects a decision, including the full range of one’s values and the particularities of a choice context. Appreciating that decisions are made over holistic possibilities has important consequences for how we understand decision theory both as a normative and descriptive theory. My dissertation aims at establishing that objects of preference are fine-grained and that human decisions range over holistic outcomes, and then tracing out the consequences of this insight. (shrink)

Ethical decision-making descriptive theoretical models often conflict with each other and typically lack comprehensiveness. To address this deficiency, a revised EDM model is proposed that consolidates and attempts to bridge together the varying and sometimes directly conflicting propositions and perspectives that have been advanced. To do so, the paper is organized as follows. First, a review of the various theoretical models of EDM is provided. These models can generally be divided into rationalist-based ; and non-rationalist-based. Second, the proposed (...) model, called ‘Integrated Ethical Decision Making,’ is introduced in order to fill the gaps and bridge the current divide in EDM theory. The individual and situational factors as well as the process of the proposed model are then described. Third, the academic and managerial implications of the proposed model are discussed. Finally, the limitations of the proposed model are presented. (shrink)

I argue that the Universal Law formulation of the Categorical Imperative is best interpreted as a test or decision procedure of moral rightness and not as a criterion intended to explain the deontic status of actions. Rather, the Humanity formulation is best interpreted as a moral criterion. I also argue that because the role of a moral criterion is to explain, and thus specify what makes an action right or wrong, Kant's Humanity formulation yields a theory of relevant descriptions.

We propose a descriptive version of the classical multi-attribute utility model; to that end, we add a new parameter, momentary salience, to the customary formulation. The addition of this parameter allows the theory to accommodate changes in the decision maker’s mood and circumstances, as the saliencies of anticipated consequences are driven by concerns of the moment. By allowing for the number of consequences given attention at the moment of decision to vary, the new model mutes the criticism (...) that SEU models call for an omniscient decision maker. Use of the model is illustrated with a large-scale longitudinal study showing that adolescent smokers have higher utility for smoking than nonsmokers. We also propose to use the model hierarchically to describe everyday decisions that people deal with repeatedly. Big decisions, which set policy, guide a host of nested little decisions, which in turn lead to action. For a little decision, one of the options will be consistent with the policy, and will inherit its high utility. Accordingly, most little decisions will be made quickly and will follow the policy. However, people do sometimes decide to violate their own policies, and we describe how these lapses can lead to collapse of the policy. (shrink)

Psychological theory and research in ethical decision making and ethical professional practice are presently hampered by a failure to take appropriate account of an extensive background in moral philosophy. As a result, attempts to develop models of ethical decision making are left vulnerable to a number of criticisms: that they neglect the problems of meta-ethics and the variety of meta-ethical perspectives; that they fail clearly and consistently to differentiate between descriptive and prescriptive accounts; that they leave unexplicated (...) the theoretical assumptions derived from the underlying moral theories; and that they fail to accommodate the complexity and comprehensiveness of the processes involved in the making and implementing of ethical decisions. Many of these problems also have implications for the methodological domain. This paper offers an analysis of the difficulties, and makes a number of recommendations for future theory, research and practical applications, including: the need for training in moral philosophy; clarification of the status of Professional Codes in decisional models; the development of theoretically comprehensive prescriptive models; and the testing of these models in ways that do justice to their dimensional scope and theoretical complexity. (shrink)

Normative theories can be useful in developing descriptive theories, as when normative subjective expected utility theory is used to develop descriptive rational choice theory and behavioral game theory. questions are also the essence of theories of moral reasoning, a domain of higher mental processing that could not survive without normative considerations.

Background In the globalizing world, nurses often meet humans from different cultures and values. This fact has led them to make ethical decisions, which do not comply with their own moral jurisdictions at care setting. Objectives The objective of the study was to investigate the relationships between moral development levels of the nurses and their scores of nursing principled thinking and practical consideration during decision making for ethical dilemmas. Methods This was a descriptive correlational study. Nursing Dilemma Test, (...) Moral Development Scale for Professionals and socio-demographic form were used. Study was conducted with 227 nurses. Ethical considerations: An institutional authorization, an ethics approval from non-interventional ethics committee of the respective university, permission from the authors of the scales used and informed consents from the nurses were obtained in order to conduct the study. Results In this study, nurses were found to be at post-conventional level according to Kohlberg’s moral development theory. Sociodemographic and working characteristics of the nurses have not affected their scores of moral development level and their scores of nursing principled thinking, practical consideration and familiarity. Nurses take attention for moral principles during decision making although not at a desirable level, and they are relatively affected by environmental factors Conclusion Although nurses are familiar with ethical problems at scenarios including ethical dilemmas, they cannot make decisions in accordance with their moral development levels during decision making for ethical dilemmas. Nurses should be instructed and supported for ethical decision making by recognizing factors that may be effective on their decision making. (shrink)

Decision-making has traditionally been modelled as a serial process, consisting of a number of distinct stages. The traditional account assumes that an agent first acquires the necessary perceptual evidence, by constructing a detailed inner repre- sentation of the environment, in order to deliberate over a set of possible options. Next, the agent considers her goals and beliefs, and subsequently commits to the best possible course of action. This process then repeats once the agent has learned from the consequences of (...) her actions and subsequently updated her beliefs. Under this interpretation, the agent’s body is considered merely as a means to report the decision, or to acquire the relevant goods. However, embodied cognition argues that an agent’s body should be understood as a proper part of the decision-making pro- cess. Accepting this principle challenges a number of commonly held beliefs in the cognitive sciences, but may lead to a more unified account of decision-making. This thesis explores an embodied account of decision-making using a recent frame- work known as predictive processing. This framework has been proposed by some as a functional description of neural activity. However, if it is approached from an embodied perspective, it can also offer a novel account of decision-making that ex- tends the scope of our explanatory considerations out beyond the brain and the body. We explore work in the cognitive sciences that supports this view, and argue that decision theory can benefit from adopting an embodied and predictive perspective. (shrink)

Thomas Schelling, who wrote the foreword for this book, won the Nobel Prize in economics for "having enhanced our understanding of conflict and cooperation through game-theory analysis." This came after he had taught a course in game theory and rational choice to advanced students and government officials for 45 years. In this book, Robert Dodge provides in language for a broad audience, the concepts that Schelling taught. Armed with Schelling's understanding of game theory methods and his approaches to problems, the (...) general reader can improve daily decision making. Mathematics often make game theory challenging but was not a major part of Schelling's course and is even less of a factor in this book. Along with a summary of the material Schelling presented, included are problems from the course and similar less challenging questions. While considerable analysis is done with the basic game theory tool--the two-by-two matrix--much of the book is descriptive and rational decision-making is explained with stories. Chapter supplements are added to illuminate points presented by Schelling, including writings by Paul Krugman, Thomas Friedman, Steven Levitt, and others. (shrink)

If we know that certain ways of making decisions are associated with real-life success, is this then how we should decide? In this paper the relationship between normative and descriptive theories of decision-making is examined. First, it is shown that the history of the decision sciences ensures that it is impossible to separate descriptive theories from normative ones. Second, recent psychological research implies new ways of arguing from the descriptive to the normative. The paper ends (...) with an evaluation of how this might affect normative theories of decision-making. (shrink)

In computational complexity theory, decision problems are divided into complexity classes based on the amount of computational resources it takes for algorithms to solve them. In theoretical computer science, it is commonly accepted that only functions for solving problems in the complexity class P, solvable by a deterministic Turing machine in polynomial time, are considered to be tractable. In cognitive science and philosophy, this tractability result has been used to argue that only functions in P can feasibly work as (...) computational models of human cognitive capacities. One interesting area of computational complexity theory is descriptive complexity, which connects the expressive strength of systems of logic with the computational complexity classes. In descriptive complexity theory, it is established that only first-order systems are connected to P, or one of its subclasses. Consequently, second-order systems of logic are considered to be computationally intractable, and may therefore seem to be unfit to model human cognitive capacities. This would be problematic when we think of the role of logic as the foundations of mathematics. In order to express many important mathematical concepts and systematically prove theorems involving them, we need to have a system of logic stronger than classical first-order logic. But if such a system is considered to be intractable, it means that the logical foundation of mathematics can be prohibitively complex for human cognition. In this paper I will argue, however, that this problem is the result of an unjustified direct use of computational complexity classes in cognitive modelling. Placing my account in the recent literature on the topic, I argue that the problem can be solved by considering computational complexity for humanly relevant problem solving algorithms and input sizes. (shrink)

"An important contribution to contemporary jurisprudential debate and to legal thought more generally, Just Interpretations is far ahead of currently available work."--Peter Goodrich, author of Oedipus Lex "I was struck repeatedly by the clarity of expression throughout the book. Rosenfeld's description and criticism of the recent work of leading thinkers distinguishes his work within the legal theory genre. Furthermore, his own theory is quite original and provocative."--Aviam Soifer, author of Law and the Company We Keep.

This paper focuses on the normative analysis—in the sense of the classic decision-theoretic formulation—of decision problems that arise in connection with forensic expert reporting. We distinguish this analytical account from other common types of decision analyses, such as descriptive approaches. While decision theory is, since several decades, an extensively discussed topic in legal literature, its use in forensic science is more recent, and with an emphasis on goals such as the analysis of the logical structure (...) of forensic expert conclusions regarding, for example, propositions of common source of evidential and known materials. Typical examples are so-called identification decisions, especially categorical conclusions according to which fingermarks come from a particular a person of interest. We will present and compare ways of stating forensic identification decisions in decision-theoretic terms and explain their underlying rationale. In particular, we will emphasize the importance of viewing this analysis as normative in the sense of providing a reflective rather than a prescriptive reference point against which people in charge of forensic identification decisions may compare their otherwise intuitive and informal reasoning, before acting. Normative decision analysis in forensic science thus provides a vector through which current practice can be articulated, scrutinized and rethought. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviews 85 RUSSELL’S CONTRIBUTION TO PHILOSOPHY OF LANGUAGE James Connelly Philosophy, Trent U. Peterborough, on k9l 1z6, Canada [email protected] Graham Stevens. The Theory of Descriptions: Russell and the Philosophy of Language. Basingstoke, uk: Palgrave Macmillan, 2011. Pp. xiii, 197. isbn: 978-0230 -20116-3. £50; us$85. ver the past decade, Graham Stevens has built his reputation as a lucid, durable, and oftentimes ground-breaking historian of analytic philosophy. His latest book, entitled (...) TheTheory of Descriptions: Russell and the Philosophy of Language, will only add to that burgeoning scholarly legacy. If it has not been established already, this book will doubtless cement Stevens’ place amongst the leading Russell scholars in the world today. It may very well herald Stevens ’ arrival on the scene as a noteworthy contributor to contemporary philosophy of language as well. The central goal of the book is “to bring the historical and purely philosophical analyses of [Russell’s] work into closer alignment” (p. 3). Stevens hopes to overcome a “striking disparity” (p. 2) in the ways that Russell’s contributions to the philosophy of language have been conceived by expositors of his philosophy, on the one hand, versus philosophers of language, on the other. In particular, though contemporary philosophers of language would tend to view Russell’s enormous contribution to that subject as being “undeniable” (p. 1), and to be “bewildered” (p. 94) by any suggestion to the contrary, expositors of Russell’s philosophy have nevertheless been at pains to emphasize that Russell “was not engaged in the philosophical study of language” (p. 2). As Stevens notes, this situation is especially puzzling since “these two groups [of scholars] overlap to a considerable extent” (p. 2). Stevens’ strategy for overcoming this disparity is two-pronged. First he aims to tackle, head on, the fallacious arguments of Monk,1 Dummett,2 and others, to the effect that Russell was not engaged in the philosophy of language. According to Stevens, such arguments have principally appealed to either (1) ______ 1 Ray Monk, “What Is Analytical Philosophy?”. 2 Michael Dummett, Frege: Philosophy of Language. l= 86 Reviews Russell’s dismissal of ordinary language philosophy, (2) his early, non-linguistic, conception of the nature of propositions, or (3) his view that natural language was inherently defective for philosophical purposes, and so called for replacement by a “logically perfect language”. In regards to (1), Stevens argues in a word that “[o]rdinary language philosophy has had its day” (p. 176). Over the past several decades, in other words, leading philosophers of language have come to agree with Russell in viewing ordinary language philosophy as “an outdated, and rather eccentric, relic of mid-twentieth century British philosophy” (ibid.).The classic Russell– Strawson debate over the question whether ordinary language lacks an exact logic3 has been settled decisively in Russell’s favour, as philosophers of language have transformed “the attempt to systematically specify the semantics of large regions of natural language” (ibid.) into a “central project” (ibid.). In regards to (2), moreover, Stevens notes that by this line of reasoning, absurdly, David Kaplan would not qualify as a philosopher of language since he “explicitly invokes the Russellian non-linguistic conception of a proposition as the conception appropriate for providing the content of properly context-situated indexical sentences” (p. 170). And, of course, Kaplan is not at all unique amongst contemporary philosophers of language in appealing to a Russellian conception of propositional content, as the examples of Nathan Salmon,4 Scott Soames,5 and many others show. In regards to (3), finally, Stevens argues that Russell’s dim view of natural language was grounded in his conception of logical form as non-linguistic, and that that conception, in turn, derives simply from the poverty of syntactic theory available to Russell, prior to the Chomskyian revolution in linguistics during the second half of the twentieth century. In light of the conceptual and analytic resources made available by this revolution, however, there exists “no insurmountable obstacle to assimilating Russell ’s notion of logical form to something akin to the modern notion of lf” (p. 172), where lf is conceived as one of four levels of syntactic representation within Chomsky’s Government and Binding Theory... (shrink)

Taking Savage's subjective expected utility theory as a starting point, this thesis distinguishes three types of uncertainty which are incompatible with Savage's theory for small worlds: ambiguity, option uncertainty and state space uncertainty. Under ambiguity agents cannot form a unique and additive probability function over the state space. Option uncertainty exists when agents cannot assign unique consequences to every state. Finally, state space uncertainty arises when the state space the agent constructs is not exhaustive, such that unforeseen contingencies can occur. (...) Chapter 2 explains Savage's notions of small and large worlds, and shows that ambiguity, option and state space uncertainty are incompatible with the small world representation. The chapter examines whether it is possible to reduce these types of uncertainty to one another. Chapter 3 suggests a definition of objective ambiguity by extending Savage's framework to include an exogenous likelihood ranking over events. The definition allows for a precise distinction between ambiguity and ambiguity attitude. The chapter argues that under objective ambiguity, ambiguity aversion is normatively permissible. Chapter 4 gives a model of option uncertainty. Using the two weak assumptions that the status quo is not uncertain, and that agents are option uncertainty averse, we derive status quo bias, the empirical tendency for agents to choose the status quo over other available alternatives. The model can be seen as rationalising status quo bias. Chapter 5 gives an axiomatic characterisation and corresponding representation theorem for the priority heuristic, a heuristic which predicts binary decisions be- tween lotteries particularly well. The chapter analyses the normative implications of this descriptive model. Chapter 6 defends the pluralist view of decision theory this thesis assumes. The chapter discusses possible applications of the types of uncertainty defined in the thesis, and concludes. (shrink)

BackgroundRelatives have no formal position in the practice of euthanasia and physician-assisted suicide (EAS) according to Dutch legislation. However, research shows that physicians often involve relatives in EAS decision-making. It remains unclear why physicians do (not) want to involve relatives. Therefore, we examined how many physicians in the Netherlands involve relatives in EAS decision-making and explored reasons for (not) involving relatives and what involvement entails.MethodsIn a mixed-methods study, 746 physicians (33% response rate) completed a questionnaire, and 20 were (...) interviewed. The questionnaire included two statements on relatives’ involvement in EAS decision-making. Descriptive statistics were used, and multivariable logistic regression analyses to explore characteristics associated with involving relatives. In subsequent interviews, we explored physicians’ views on involving relatives in EAS decision-making. Interviews were thematically analysed.ResultsThe majority of physicians want to know relatives’ opinions about an EAS request (80%); a smaller group also takes these opinions into account in EAS decision-making (35%). Physicians who had ever received an explicit EAS request were more likely to want to know opinions and clinical specialists and elderly care physicians were more likely to take these opinions into account. In interviews, physicians mentioned several reasons for involving relatives: e.g. to give relatives space and help them in their acceptance, to tailor support, to be able to perform EAS in harmony, and to mediate in case of conflicting views. Furthermore, physicians explained that relatives’ opinions can influence the decision-making process but cannot be a decisive factor. If relatives oppose the EAS request, physicians find the process more difficult and try to mediate between patients and relatives by investigating relatives’ objections and providing appropriate information. Reasons for not taking relatives’ opinions into account include not wanting to undermine patient autonomy and protecting relatives from a potential burdensome decision.ConclusionsAlthough physicians know that relatives have no formal role, involving relatives in EAS decision-making is common practice in the Netherlands. Physicians consider this important as relatives need to continue with their lives and may need bereavement support. Additionally, physicians want to perform EAS in harmony with everyone involved. However, relatives’ opinions are not decisive. (shrink)

Ethical decision-making is inherent in nursing practice. Although a definite portion of the nursing literature is devoted to ethics and ethical decision-making, the profession is just beginning to ground its ethics research in the actual experience of nurses. Therefore, the purpose of this phenomenological study was to examine the experience of staff nurses as they engage in ethical decision-making. Interview data were collected from 19 staff nurses in a large, midwestern American metropolitan hospital. Interviews were subse quently (...) transcribed and Giorgi's method of data analysis applied. The emerging descrip tion revealed four common aspects of ethical decision-making among staff nurses: context, trigger, ethical decision-making process (i.e. deliberation and integration), and outcomes. This description provides a foundation for future research regarding a descrip tive theory of ethical decision-making in nursing. (shrink)

A popular model of normative decision-making under uncertainty suggests choosing the option with the maximum expected moral choice-worthiness, where the choice-worthiness values from each moral theory, which are assumed commensurable, are weighted by credence and combined. This study adds descriptive uncertainty about the non-moral facts of a situation into the model by treating choice-worthiness as a random variable. When agents face greater descriptive uncertainty, the choice-worthiness random variable will have a greater spread and a larger standard deviation. (...) MEC, as a decision rule, is sensitive only to the expected value of the random variable and not to its standard deviation. For example, MEC is insensitive to cases where an option with a large degree of descriptive uncertainty may have a higher probability of being below some threshold of impermissibility than does an option with less dispersion, even though the latter has a higher expected choice-worthiness. When applied to the same situation, similar moral theories will have statistically correlated choice-worthiness values. This correlation affects the dispersion of the credence-weighted sum of the random variables but not its expected value. Thus, MEC is insensitive to aspects of the normative situation to which a good decision-rule should be sensitive. (shrink)

From a decision theoretic perspective, arguments stem from decisions made by arguers. Despite some promising results, this approach remains underdeveloped in argumentation theories, mostly because it is assumed to be merely descriptive. This assumption is mistaken: considering arguments as the product of decisions brings into play various normative models of rational choice. The challenge is rather to reconcile strategic rationality with other normative constraints relevant for argumentation, such as inferential validity and dialectical appropriateness.

The problem addressed in this text is the problem of identifying conditions according to which it is possible to distinguish between a descriptive theory and a normative theory. What makes a descriptive theory descriptive and a normative theory normative? Focus is on subjective expected utility theories where it seems open to debate whether the appropriate use is normative or descriptive. My discussion, which takes arguments by Isaac Levi and Hugh Mellor as a point of departure, is (...) mostly negative, showing that there are no obvious distinguishing features of theories qua theories. Rather the theories can be used normatively or descriptively without making them theories of the one kind or the other. I also point to situations in prescriptive decision analysis where one should be observant of in what way theories are used. (shrink)

Medicine is incorporating genetic services into all avenues of health‐care, ranging from the rarest to the most common diseases. Cognitive theories of decision‐making still dominate professionals’ understanding of patient decision‐making about how to use genetic information and whether to have testing. I discovered a conceptual model of decision‐making while carrying out a phenomenological‐hermeneutic descriptive study of a convenience sample of 12 couples who were interviewed while deciding whether to undergo prenatal genetic testing.Thirty‐two interviews were conducted with (...) 12 men and 12 women separately. Interviews were transcribed verbatim and all data were analyzed using three levels of coding that were sorted into 30 categories and then abstracted into three emergent meta‐themes that described men's and women's attempts to make sense and find meaning in how to best use prenatal genetic technology. Their descriptions of how they thought about, communicated, and coped with their decision were so detailed it was possible to discern nine different types of thinking they engaged in while deciding to accept or decline testing.They believed that decision‐making is a process of working through your own personal style of thinking. This might include only one or any combination of the following types of thinking: analytical, ethical, moral, reflective, practical, hypothetical, judgmental, scary, and second sight, as described in detail by these 12 couples. (shrink)

This article examines how people with type 2 diabetes perceive autonomous decision making and which moral capacities they consider important in diabetes nurses' support of autonomous decision making. Fifteen older adults with type 2 diabetes were interviewed in a nurse-led unit. First, the data were analysed using the grounded theory method. The participants described a variety of decision-making processes in the nurse and family care-giver context. Later, descriptions of the decision-making processes were analysed using hermeneutic text (...) interpretation. We suggest first- and second-order moral capacities that nurses specializing in diabetes need to promote the autonomous decision making of their patients. We recommend nurses to engage in ongoing, interactive reflective practice to further develop these moral capacities. (shrink)

Résumé Cet article soutient que la causalité au sens humien (mettant en relief la succession) qui fut la principale cible des critiques du Réalisme Critique de Bhaskar, demeure très présente dans le concept même de “mécanisme”. En effet, le concept de mécanisme implique une abstraction newtonienne du temps ignorée par le Réalisme Critique. Il s’agit cependant d’un problème plus large d’abstraction mécaniste, que cet article analyse simultanément sous l’angle du Réalisme Critique et de la discipline ayant pour objet l’étude des (...) mécanismes, la cybernétique. Comment des descriptions de mécanismes causals peuvent-elles se réconcilier avec leurs propres abstractions? En réponse nous proposons une dissolution du problème du temps au travers de l’expérience vécue. Par ailleurs, nous traitons également des questions liées à la pédagogie de l’enseignement des abstractions, à la mise au point de nouveaux contextes d’interaction et au rôle des technologies dans la mise en place des contextes ludiques. Enfin, nous dégageons des implications plus profondes pour la recherche réaliste, et soulignons la nécessité de traiter conjointement les problèmes d’abstraction et les problèmes pédagogiques et technologiques. (shrink)

A Theory of Shopping offers a highly original perspective on one of our most basic everyday activities - shopping. We commonly assume that shopping is primarily concerned with individuals and materialism. But Miller rejects this assumption and follows the surprising route of analysing shopping by means of an analogy with anthropological studies of sacrificial ritual. He argues that the act of purchasing goods is almost always linked to other social relations, and most especially those based on love and care. The (...) ethnographic sections of the book are based on a year's study of shopping on a street in North London. This provides the basis for a sensitive description of the issues the shopper confronts when making decisions as to what to buy. Miller develops a theory to account for these observations, arguing that shopping typically consists of three major stages which reflect the three key stages of many rites of sacrifice. In both shopping and sacrifice the ultimate intention is to constitute others as desiring subjects. Finally the book examines certain historical shifts in both subjects and objects of devotion, in particular, ideals of gender and love. This treatment of shopping from the perspective of comparative anthropology represents a highly innovative approach to one of the most familiar tasks of our daily lives. Written in a clear and accessible manner, this book will be of interest to students and academics in anthropology, sociology and cultural studies, as well as anybody who wants to consider more deeply the nature of their own everyday activities. (shrink)

A persistent argument against the transitivity assumption of rational choice theory postulates a repeatable action that generates a significant benefit at the expense of a negligible cost. No matter how many times the action has been taken, it therefore seems reasonable for a decision-maker to take the action one more time. However, matters are so fixed that the costs of taking the action some large number of times outweigh the benefits. In taking the action some large number of times (...) on the grounds that the benefits outweigh the costs every time, the decision-maker therefore reveals intransitive preferences, since once she has taken it this large number of times, she would prefer to return to the situation in which she had never taken the action at all. We defend transitivity against two versions of this argument: one in which it is assumed that taking the action one more time never has any perceptible cost, and one in which it is assumed that the cost of taking the action, though (sometimes) perceptible, is so small as to be outweighed at every step by the significant benefit. We argue that the description of the choice situation in the first version involves a contradiction. We also argue that the reasoning used in the second version is a form of similarity-based decision-making. We argue that when the consequences of using similarity-based decision-making are brought to light, rational decision-makers revise their preferences. We also discuss one method that might be used in performing this revision. (shrink)

We have it on the authority of Aristotle that “reason (nous) is the best thing in us” (EN X.7, 1177a20). This idealization of reason permeates his account of eudaimonia, a term commonly translated as ‘happiness’, which Aristotle identifies with living and doing well (EN I.4, 1095a18-20). In harmony with a certain intellectualism peculiar to the mainstream of ancient philosophical accounts of eudaimonia, Aristotle holds that living well requires the unique practical application of rationality of which only humans are capable (EN (...) I.7, 1098a13-15/EE I.7, 1217a25-27). This dissertation investigates Aristotle’s substantive view on the practical application of reason by examining how, according to him, human agents use reason to decide what to do, what kind of person to be, and indeed how to live well. A distinctively human way of making decisions is deliberation (bouleusis), an exercise of practical reason par excellence. The first chapter reconstructs Aristotle’s account of deliberation from a wide range of texts in the corpus. It argues that deliberation is a complex decision-making process that, for the most part, unfolds into four stages: (1) positing a provisional goal; (2) constructing a set of alternatives; (3) identifying the best alternative; (4) forming an intention to do the most proximate action as identified in the penultimate stage. This reading offers a comprehensive representation of Aristotle’s theory while rendering his theory more sophisticated—and indeed more modern—than the alternatives in recent years. Deciding what to do often requires that we confront the question, “Which is preferable (hairetōteron) or better (beltion) between two or more options?” In Topics III, a text widely acknowledged as the inaugural treatment of the logic of preference, Aristotle articulates a set of principles to guide our preference-ranking. While scholars pay historical homage to Aristotle, there is little engagement with his treatment of preference logic. The second chapter addresses the need for a current study and reassessment of Aristotle’s preference-ranking principles. It argues that, despite differences in scope and methodology between the Aristotelian and modern systems, the description inaugural treatment of preference logic comfortably, and accurately, applies to Topics III. When one looks at the role that Aristotle allows reason to play in the production and motivation of action, it is tempting to conclude that Aristotle endorses the Humean division of labor. For Aristotle claims that deliberation is about “the things towards the goal” (EN III.3, 1112b11-16) and that virtue (aretē) makes our goals right (EN VI.12, 1144a7-9). Chapter three seeks to show, against a recent influential quasi-Humean interpretation, that the primary function of practical reason is mapping the landscape of value corresponding to the agent’s reasoned conception of what eudaimonia consists in, as a rational being that she is. Aristotle notoriously defends the political subordination of individuals he believes to have a defective deliberative capacity. In Politics I.13, he claims that the deliberative faculty is undeveloped in children and “ineffectual” (akuron) in women (1260a12). The concluding chapter considers a puzzle about the development of the female’s deliberative faculty: How do women become ineffective in their deliberation, but freemen do not, given that all children have deliberative faculties that are unperfected? Drawing from the theories defended in previous chapters, I argue that the female’s deliberative defect is primarily due to her lack of moral education rather than inalterable sexual, biological differences—a thesis widely endorsed by scholars lately. (shrink)

In the theoretical description of prospect theory, distinct sets of parameters can control the curvature of the value function and the shape of the probability weighting function. There is one for the gain domain and one for the loss domain. However, in most estimations, behaviour over losses is assumed to perfectly reflect behaviour over gains, through a unique set of parameters. We examine the consequences of relaxing this simplifying assumption in the context of Tanaka et al.’s (Am Econ Rev 100(1):557–571, (...) 2010) risk-elicitation procedure based on multiple price lists. We show that subjects’ behaviour for gains is mostly reflected for losses at the aggregate and individual levels, and is consistent with the distinctive prospect theory fourfold pattern. Reflection is only partial as the mean curvature of the value function is slightly less convex for losses than it is concave for gains. These results are robust to a high-stake context. However, we demonstrate that assuming reflection can have huge consequences on loss-aversion measures. Incidentally, we also highlight the existence of a strong, negative and persistent pure loss-frame effect on elicited loss aversion. We recommend that future practitioners and modellers are particularly cautious about the loss-aversion values they obtain or use because these are especially sensitive to parametric assumptions and framing. (shrink)

The view that takes laws of nature to be essentially nothing more than descriptions of facts is still rather popular. The present article, on the contrary, defends the claim that the only real motivation for defending a descriptive view of laws—the quest for ontological parsimony—entails too high a price to pay in philosophical terms. It is argued that nomic primitivism, namely the alternative option that takes laws to be primitive fundamental entities in our ontology, is decisively more appealing, since (...) it is the crucial role assigned to laws that makes a scientific theory of natural phenomena a system rather than a list. Finally, the implications that nomic primitivism might have for the issue of the status of the wave function in that particular formulation of quantum mechanics known as Bohmian mechanics are considered. (shrink)

Our understanding of the decisions made under scenarios where both descriptive and experience-based information are available is very limited. Underweighting of small probabilities was observed in the gain domain when both description and experience were provided. The divergence observed from the prospect theory suggests a need for a separate or modified theory of decision making under risk. Recent studies suggest a possible role of probability weighting in the choice behaviour under risk. We investigated both gain and loss domains (...) with and without feedback for small and large probability conditions. We characterized the shape of the probability weighting function by a two-parameter functional form representing discriminability (concave-convex shape) and attractiveness (level of absolute weights relative to objective probability). We replicated four-fold pattern of risk attitude on non-WEIRD population. We find that feedback leads to underweighting of small probabilities and overweighting of large probabilities in the gain domain and overall underweighting of probabilities in the loss domain. We find that underweighting of small probabilities is driven by changes in discriminability and attractiveness components in the gain domain and changes in the attractiveness component in the loss domain. We have interpreted the results by proposing an updated belief-based account of decisions under uncertainty in which feedback, when available, influences the probability weighting mediating the choice behaviour. (shrink)

The paper argues that Donnellan’s distinction between the referential and attributive uses of definite descriptions, whilst a genuine feature of language, does not count against Russell’s Theory of Descriptions where Russell’s theory is regarded as a theory of the semantics of descriptions and not the pragmatics of individual uses on a particular occasion. The argument I shall present is simple but decisive and ought to resolve once and for all the debate about the significance of Donnellan’s distinction for Russell’s theory, (...) provided of course that Russell’s theory really does concern the semantics of definite descriptions rather than their use on particular occasions. (shrink)

Prospect theory emerged as one of the leading descriptive decision theories that can rationalize a large body of behavioral regularities. The methods for eliciting prospect theory parameters, such as its value function and probability weighting, are invaluable tools in decision analysis. This paper presents a new simple method for eliciting prospect theory’s value function without any auxiliary/simplifying parametric assumptions. The method is applicable both to choice under ambiguity (Knightian uncertainty) and risk (when events are characterized by objective (...) probabilities). Our new elicitation method is implemented in a simple paper-and-pencil experiment (via an iterative multiple price list format). This is one of the first experiments that elicits non-parametric prospect theory’s value function with salient rewards. The collected data generally confirm findings in the existing literature: the value function is S-shaped (concave in the gain domain and convex in the loss domain) though there is a weaker loss aversion on the aggregate level and a substantial heterogeneity in loss aversion on the individual level (41% loss averse, 6% loss neutral and 53% gain seeking). (shrink)

We typically have to act under uncertainty. We can be uncertain about the relevant descriptive facts, but also about the relevant normative facts. However, the search for a theory of decision-making under normative uncertainty is doomed to failure. First, the most natural proposal for what to do given normative uncertainty faces two devastating problems. Second, the motivations for wanting a theory of what to do given descriptive uncertainty do not carry over to normative uncertainty. Descriptive facts (...) may be inaccessible even in principle, and ignorance of them excuses one from blame, but normative facts are in principle accessible, and ignorance of them arguably is no excuse. Normative facts differ from descriptive facts: normative facts affect what we ought to do no matter what, while descriptive facts affect what we ought to do only insofar as we are aware of them. (shrink)

Prior research in judgment and decision making (JDM) has investigated the effect of problem framing on human preferences. Furthermore, research in JDM documented the absence of such reversal of preferences when making decisions from experience. However, little is known about the effect of context on preferences under the combined influence of problem framing and problem format. Also, little is known about how cognitive models would account for human choices in different problem frames and types (general/specific) in the experience format. (...) One of the primary objectives of this research is to investigate the presence of preference reversals under the influence of problem framing (gain/loss), problem format (experience/description), and problem type (general/specific). Another objective of this research is to develop cognitive models to account for human choices across different problem frames and types in the experience format. A total of 320 participants from India were randomly assigned to one of eight between-subjects conditions that differed in problem frame, format, and type. Results revealed preference reversals in the description condition; however, they were absent in the experience condition. Moreover, preference reversals were less pronounced in the general problem framing compared to the specific problem framing. Furthermore, specific problems influenced risk-seeking behavior among participants. We developed cognitive and heuristics models using instance-based learning theory and natural mean heuristic. Results reveal models’ dependency on recent and frequent observations during information sampling. These experience-based cognitive models could help build artificial intelligence models with fewer preference reversals. (shrink)