Agents are often assumed to have degrees of belief (“credences”) and also binary beliefs (“beliefs simpliciter”). How are these related to each other? A much-discussed answer asserts that it is rational to believe a proposition if and only if one has a high enough degree of belief in it. But this answer runs into the “lottery paradox”: the set of believed propositions may violate the key rationality conditions of consistency and deductive closure. In earlier work, we showed that this problem (...) generalizes: there exists no local function from degrees of belief to binary beliefs that satisfies some minimal conditions of rationality and non-triviality. “Locality” means that the binary belief in each proposition depends only on the degree of belief in that proposition, not on the degrees of belief in others. One might think that the impossibility can be avoided by dropping the assumption that binary beliefs are a function of degrees of belief. We prove that, even if we drop the “functionality” restriction, there still exists no local relation between degrees of belief and binary beliefs that satisfies some minimal conditions. Thus functionality is not the source of the impossibility; its source is the condition of locality. If there is any non-trivial relation between degrees of belief and binary beliefs at all, it must be a “holistic” one. We explore several concrete forms this “holistic” relation could take. (shrink)

Computer-simulated scenarios have been part of psychological research on problem solving for more than 40 years. The shift in emphasis from simple toy problems to complex, more real-life oriented problems has been accompanied by discussions about the best ways to assess the process of solving complex problems. Psychometric issues such as reliable assessments and addressing correlations with other instruments have been in the foreground of these discussions and have left the content validity of complex problem solving in the background. In (...) this paper, we return the focus to content issues and address the important features that define complex problems. (shrink)

Behaviourism is the view that preferences, beliefs, and other mental states in social-scientific theories are nothing but constructs re-describing people's behaviour. Mentalism is the view that they capture real phenomena, on a par with the unobservables in science, such as electrons and electromagnetic fields. While behaviourism has gone out of fashion in psychology, it remains influential in economics, especially in ‘revealed preference’ theory. We defend mentalism in economics, construed as a positive science, and show that it fits best scientific practice. (...) We distinguish mentalism from, and reject, the radical neuroeconomic view that behaviour should be explained in terms of brain processes, as distinct from mental states. (shrink)

The Christian does not live in a vacuum, says the author, but in a world of government, politics, labor, and marriage. Hence, Christian ethics cannot exist in a vacuum what the Christian needs, claims Dietrich Bonhoeffer, is concrete instruction in a concrete situation. Although the author died before completing his work, this book is recognized as a major contribution to Christian ethics. The root and ground of Christian ethics, the author says, is the reality of God as revealed in (...) Jesus Christ. This reality is not manifest in the Church as distinct from the secular world such a juxtaposition of two separate spheres, Bonhoeffer insists, is a denial of God's having reconciled the whole world to himself in Christ. On the contrary, God's commandment is to be found and known in the Church, the family, labor, and government. His commandment permits man to live as man before God, in a world God made, with responsibility for the institutions of that world. (shrink)

We introduce a “reason-based” framework for explaining and predicting individual choices. It captures the idea that a decision-maker focuses on some but not all properties of the options and chooses an option whose motivationally salient properties he/she most prefers. Reason-based explanations allow us to distinguish between two kinds of context-dependent choice: the motivationally salient properties may (i) vary across choice contexts, and (ii) include not only “intrinsic” properties of the options, but also “context-related” properties. Our framework can accommodate boundedly rational (...) and sophisticatedly rational choice. Since properties can be recombined in new ways, it also offers resources for predicting choices in unobserved contexts. (shrink)

Which rules for aggregating judgments on logically connected propositions are manipulable and which not? In this paper, we introduce a preference-free concept of non-manipulability and contrast it with a preference-theoretic concept of strategy-proofness. We characterize all non-manipulable and all strategy-proof judgment aggregation rules and prove an impossibility theorem similar to the Gibbard--Satterthwaite theorem. We also discuss weaker forms of non-manipulability and strategy-proofness. Comparing two frequently discussed aggregation rules, we show that “conclusion-based voting” is less vulnerable to manipulation than “premise-based voting”, (...) which is strategy-proof only for “reason-oriented” individuals. Surprisingly, for “outcome-oriented” individuals, the two rules are strategically equivalent, generating identical judgments in equilibrium. Our results introduce game-theoretic considerations into judgment aggregation and have implications for debates on deliberative democracy. (shrink)

Called by Karl Barth the brilliant Ethics of Dietrich Bonhoeffer, this book is finally being recognized as Bonhoeffers magnum opus and one of the most important works of Christian ethics of the last century.

Recently, a number of philosophers of biology have endorsed views about random drift that, we will argue, rest on an implicit assumption that the meaning of concepts such as drift can be understood through an examination of the mathematical models in which drift appears. They also seem to implicitly assume that ontological questions about the causality of terms appearing in the models can be gleaned from the models alone. We will question these general assumptions by showing how the same equation (...) — the simple 2 = p2 + 2pq + q2 — can be given radically different interpretations, one of which is a physical, causal process and one of which is not. This shows that mathematical models on their own yield neither interpretations nor ontological conclusions. Instead, we argue that these issues can only be resolved by considering the phenomena that the models were originally designed to represent and the phenomena to which the models are currently applied. When one does take those factors into account, starting with the motivation for Sewall Wright’s and R.A. Fisher’s early drift models and ending with contemporary applications, a very different picture of the concept of drift emerges. On this view, drift is a term for a set of physical processes, namely, indiscriminate sampling processes. (shrink)

The widely discussed "discursive dilemma" shows that majority voting in a group of individuals on logically connected propositions may produce irrational collective judgments. We generalize majority voting by considering quota rules, which accept each proposition if and only if the number of individuals accepting it exceeds a given threshold, where different thresholds may be used for different propositions. After characterizing quota rules, we prove necessary and sufficient conditions on the required thresholds for various collective rationality requirements. We also consider sequential (...) quota rules, which ensure collective rationality by adjudicating propositions sequentially and letting earlier judgments constrain later ones. Sequential rules may be path-dependent and strategically manipulable. We characterize path-independence and prove its essential equivalence to strategy-proofness. Our results shed light on the rationality of simple-, super-, and sub-majoritarian decision-making. (shrink)

In the theory of judgment aggregation, it is known for which agendas of propositions it is possible to aggregate individual judgments into collective ones in accordance with the Arrow-inspired requirements of universal domain, collective rationality, unanimity preservation, non-dictatorship and propositionwise independence. But it is only partially known (e.g., only in the monotonic case) for which agendas it is possible to respect additional requirements, notably non-oligarchy, anonymity, no individual veto power, or implication preservation. We fully characterize the agendas for which there (...) are such possibilities, thereby answering the most salient open questions about propositionwise judgment aggregation. Our results build on earlier results by Nehring and Puppe (2002), Nehring (2006), Dietrich and List (2007a) and Dokow and Holzman (2010a). (shrink)

The purpose of this study is to elucidate various practices for the structuring of images on an ultrasound monitor during prenatal ultrasound examinations. This study focuses on the practices that healthcare providers employ to invite pregnant women to differentiate a gray-tone image on the ultrasound monitor from the image’s background. In sequential environments in which pregnant women display difficulty in differentiating an image on the screen in response to the healthcare provider’s invitation, the healthcare provider employs practices that require additional (...) bodily involvement to structure the images on the screen. Furthermore, on certain occasions, the healthcare provider also points to a particular abdominal location with the ultrasound transducer, which is held against the abdomen to produce the very image being differentiated. This study demonstrates that the image on the ultrasound monitor is intrinsically embodied and spatially and modally distributed. In addition, the study suggests an interaction-organizational ground for an aspect of the ‘personification of the fetus’ through obstetric ultrasound. (shrink)

This article focuses on referential practices at a Japanese midwife house, where at prenatal examinations, a midwife palpates a pregnant woman’s abdomen with her hands, without any assistance from an ultrasound scanner. The midwife often refers to spots on the abdomen in palpation with locative demonstrative expressions. I demonstrate that ways in which references to spots on the pregnant woman’s abdomen are accomplished are subtly different, depending on the action sequence in which they are embedded. The description of referential practices (...) in which the touching plays an important role has consequences for the re-conceptualization of human interaction in general, and interaction between medical professionals and their clients in modern medical settings in particular. (shrink)

All existing impossibility theorems on judgment aggregation require individual and collective judgment sets to be consistent and complete, arguably a demanding rationality requirement. They do not carry over to aggregation functions mapping profiles of consistent individual judgment sets to consistent collective ones. We prove that, whenever the agenda of propositions under consideration exhibits mild interconnections, any such aggregation function that is "neutral" between the acceptance and rejection of each proposition is dictatorial. We relate this theorem to the literature.

Tomus 1. Schriften zur Intellekttheorie.

_Summary:_ This article is not about red trousers. The title points to a political foolishness that killed more than 100,000 soldiers. The discussion of this foolishness is an introduction to a general discussion of the reasons for political foolishness. – In her book ‘The March of Folly – From Troy to Vietnam’, Barbara Tuchman said that in the last 3,000 years mankind has made large progress, primarily in science, but also in medicine, architecture, economy, agriculture, etc. Only in politics, in (...) the art of managing a state, nearly no progress is visible. Others share this opinion. The Swedish Chancellor in the time of Gustav II Adolph, in the time of the 30 Years’ War, Axel Oxenstierna, said to his son, who was elected for an important political position and had doubts, whether, with his 18 years, he would be able to cope with this difficult task: “If you would know, my son, with what low degree of intelligence the world is governed....” – In surveys about the reputation of professions, politicians normally get low ranks. Why is that so? – In this article we try to give an answer to that question. The answer is very simple. Foolish decisions are reducible firstly to a low or wavering self-esteem. Secondly, they are based on a lack of phantasy; politicians have difficulties in finding new solutions for problems. – This answer is not at all new; already Platon and – nearly at the same time – the ancient Indian Bhagavad Gita gave the same response. In this article we develop a theory about political foolishness. (shrink)

Spanning the course of three millennia, the art of ancient Egypt stands out for its unique continuity. The fundamental rules of Pharaonic art were established around 3000 bc. The proportions of the human body, the style of cubist representation in relief and painting, the division of a tomb or temple wall into strips, and the adaptation of diverse forms into simple hieroglyphic images remained the principle elements of Egyptian art until the Imperial Roman era.

Comparative approaches to language evolution are essential but cannot by themselves resolve the timing and context of evolutionary events since the last common ancestor with chimpanzees. Archaeology can help to fill this gap, but only if properly integrated with evolutionary theory and the ethnographic, ethological, and experimental analogies required to reconstruct the broader social, behavioral, and neurocognitive implications of ancient artifacts. The current contribution elaborates a technological pedagogy hypothesis of language origins by developing the concept of an evolving human technological (...) niche and applying it to investigate two key transitions posited by Arbib’s Mirror System Hypothesis: from complex action recognition and imitation to proto-language, and from proto-language to language. (shrink)

In der 1968 gegründeten Reihe erscheinen Monographien aus den Gebieten der Griechischen und Lateinischen Philologie sowie der Alten Geschichte. Die Bände weisen eine große Vielzahl von Themen auf: neben sprachlichen, textkritischen oder gattungsgeschichtlichen philologischen Untersuchungen stehen sozial-, politik-, finanz- und kulturgeschichtliche Arbeiten aus der Klassischen Antike und der Spätantike. Entscheidend für die Aufnahme ist die Qualität einer Arbeit; besonderen Wert legen die Herausgeber auf eine umfassende Heranziehung der einschlägigen Texte und Quellen und deren sorgfältige kritische Auswertung.

The aims of this paper are: (1) to criticize the traditional conception of understanding in sociology; (2) to show how doing interpreting is achieved within the activity the participant is currently involved in; (3) to show how an individual's special characteristics, e.g., a "strange foreigner," are constructed and used within the actual trajectory of interaction; and (4) to demonstrate how the participants in the so-called intercultural communication 'do cultural differences' within interaction.

Using the methodology of conversation analysis to examine interactions in outdoor activities, this study explores how participants specifically see an object or event in the development of an activity. In particular, the distinction between perception and knowledge is oriented to by the participants as a practical issue that informs their alternative action constructions. This distinction matters as a resource for implementing an action in an interaction. The data are in Japanese with English translations.

Musica Poetica provides an unprecedented examination of the development of Baroque musical thought. The initial chapters, which serve as an introduction to the concept and teachings of musical-rhetorical figures, explore Martin Luther's theology of music, the development of the Baroque concept of musica poetica, the idea of the affections in German Baroque music, and that music's use of the principles and devices of rhetoric. Dietrich Bartel then turns to more detailed considerations of the musical-rhetorical figures that were developed in (...) Baroque treatises and publications. After brief biographical sketches of the major theorists, Bartel examines those theorists' interpretation and classification of the figures. The book concludes with a detailed presentation of the musical-rhetorical figures, in which each theorist's definitions are presented in the original language and in parallel English translations. Bartel's clear, detailed analysis of German Baroque musical-rhetorical figures, combined with his careful translations of interpretations of those figures from a wide range of sources, make this book an indispensable introduction and resource for all students of Baroque music. Dietrich Bartel is an associate professor in the Department of Music at Canadian Mennonite Bible College (affiliated with University of Manitoba). (shrink)