This paper outlines the demographic characteristics of the Baiga tribe, one of the most primitive of the aboriginal tribal groups of Central India. The Baiga population has grown steadily since the first anthropological study of the tribe in the 1930s. Age at menarche, age at marriage, breast-feeding, and time interval between marriage and first conception are natural. There are more females than males. Sub-tribe endogamy is common; consanguineous marriage is favoured (34% of marriages are between first cousins) and marital distance (...) is low (mean 7·1 km). Though the mean menarcheal age is high (15·2 years), mean age at first marriage is low (16·6 years), giving a long reproductive period. (shrink)

George Lakoff (in his book Women, Fire, and Dangerous Things(1987) and the paper "Cognitive semantics" (1988)) champions some radical foundational views. Strikingly, Lakoff opposes realism as a metaphysical position, favoring instead some supposedly mild form of idealism such as that recently espoused by Hilary Putnam, going under the name "internal realism." For what he takes to be connected reasons, Lakoff also rejects truth conditional model-theoretic semantics for natural language. This paper examines an argument, given by Lakoff, against realism and MTS. (...) We claim that Lakoff's argument has very little, if any, impact for linguistic semantics. (shrink)

In the face of environmental crises such as climate change, pollution and biodiversity loss—which all adversely impact on health—Gils-Schmidt and Salloch explore whether physicians can be justified in taking climate issues into account in clinical care.1 While their approach centres on the ‘climate-sensitive’ decisions, physicians can carry out on the micro-level of clinical decision-making, they encourage further discussions on how climate-related issues can be included across different levels of decision-making in healthcare. We propose a list of tasks and a model (...) to assist with navigating the range of factors and structural elements an environmentally sensitive ethics must address. Stephen Gardiner’s notion of a perfect moral storm is central to understanding these issues.2 Gardiner describes how a perfect moral storm occurs in the centre of three overlapping conditions for human action and policymaking in the face of climate change. This storm is driven by: (1) a lack of interest among current generations to meet global needs and accommodate the well-being of future generations, (2) a lack of ecological concerns for other parts of nature than humans and (3) weak ethical and political theories and institutions shaping policy decisions on issues with severe implications across borders and generations. Moreover, these conditions are embedded in the existing, complex world of ethically unjustified power imbalances and social injustice. The growing awareness of healthcare’s climate footprint has amplified and accelerated global, grassroots action to make healthcare more environmentally friendly. This includes incorporating environmental impacts into quality improvement methodologies, building communities of practice to explore how to make …. (shrink)

Ten new graduate speech pathologists recounted their experiences in managing workplace ethical dilemmas in semi-structured interviews. Their stories were analysed for elements that described the nature and management of the ethical dilemmas. Ethical reasoning themes were generated to reflect the participants’ approaches to managing these dilemmas. Finally, a conceptual model, the Dynamic Model of Ethical Reasoning, was developed. This model incorporates the elements of awareness, independent problem solving, supported problem solving, and decision and outcome evaluation. Features of the model demonstrate (...) the complexity of ethical reasoning and the challenges that new graduates encounter when managing ethical dilemmas. The results have implications for preparing new graduates to manage ethical dilemmas in the workplace. (shrink)

The acquisition of a new skill usually proceeds through five stages, from novice to expert, with a sixth stage of mastery available for highly motivated performers. In this chapter, we re-state the six stages of the Dreyfus Skill Model, paying new attention to the transitions and interrelations between them. While discussing the fifth stage, expertise, we unpack the claim that, “when things are proceeding normally, experts don’t solve problems and don’t make decisions; they do what normally works” (Dreyfus & Dreyfus, (...) 1988, pp. 30 – 31). This leads us to offer an account of the “perspectival deliberation” that arises for experts and masters and that is distinct from the calculative deliberation characteristic of the lower stages of skillfulness. (shrink)

This paper evaluates the current use of the Principal Agent Model (PAM) in accounting and finance, focusing on the agent'ss use of private information. The agent'ss behavioral norms in the the PAM deviate from commonly held ethical values in society, from models of man in conventional economic theory, and also from behavioral foundations of related business school fields like corporate strategy, business ethics, and human resource management. Still, it would be unwise to reject the PAM solely because of its distasteful (...) ethical assumptions. The model does appear to have predictive power, but its descriptive or normative qualities remain unexplored. The popularity of the PAM, with its extreme model of man, raises fundamental questions about the impact of this model on business school stakeholders and society at large. (shrink)

The introductory essay to this collection correctly observes that there are many “challenges for rapprochement” between anthropology and (the rest of) cognitive science. Still, the possibilities of fruitful interchanges provide some hope for the parties getting back together, at least on an intermittent basis. This response offers some views concerning the “incompatibility” of psychology and anthropology, reviews why cognitive anthropology drifted away from cognitive science, and notes two areas of contemporary interest within cognitive anthropology that may lead to a re-engagement.

The efficacy criterion of the FPL model wrongly takes the goals of practical inference to be uncontroversial. The robustness criterion is arbitrary; the accommodation criterion is too weak to differentiate between arch rival theories. All three criteria of FPL fail to address the relation between background philosophical theories and other elements of an inferential system.

One of the most troubling aspects of dealing with past injustice in the former East Block is the conflict between positive law and law as the expression of higher principles of justice. In his Die Metaphysik der Sitten, Kant attempts to give content to, and place limitations on, what one may reasonably call "law". The purpose of this paper is to examine Kant's theories of commutative justice in a state of nature and distributive justice in a civil state in an (...) effort to define principles that are binding for every legal system. The paper examines two sets of four cases, namely 1) equity, necessity, pardons and duels; and 2) gifts, loans, bona fide purchasers and oaths, where Kant establishes limitations on state power with respect to the individual and to the society of individuals as a whole. Kant's legal system reveals itself to be a system devoted to liberal individualism and the maximum of protection of individual liberties. Einer der am meisten beunruhigenden Aspekte beim Umgang mit vergangenem Unrecht im früheren Ostblock besteht in dem Konflikt zwischen positivem Recht einerseits und Recht als Ausdruck höherer Prinzipien der Gerechtigkeit andererseits. In seinem Werk Die Metaphysik der Sitten versucht Kant, Inhalt und Grenzen dessen zu bestimmen, was man vernünftigerweise als "Recht" bezeichnen kann. Die Aufgabe dieses Beitrags besteht darin, Kants Theorien kommutativer Gerechtigkeit im Naturzustand sowie distributiver Gerechtigkeit im bürgerlichen Zustand zu untersuchen, um auf diese Weise Prinzipien zu ermitteln, die für jedes Rechtssystem bindend sind. Es werden dabei zwei Gruppen von je vier Fällen näher betrachtet, und zwar 1) Billigkeit, Notstand, Duell und Gnadenerweis sowie 2) Schenkung, Leihe, Gutglaubenserwerb und Eidesleistung, in denen Kant der staatlichen Macht im Hinblick auf das Individuum und die Gesellschaft der Individuen insgesamt Grenzen zieht. Kants Rechtssystem erweist sich hier als ein System, das dem liberalen Individualismus und einem maximalen Schutz individueller Freiheit verpflichtet ist. (shrink)

We present statistical analyses of the large‐scale structure of 3 types of semantic networks: word associations, WordNet, and Roget's Thesaurus. We show that they have a small‐world structure, characterized by sparse connectivity, short average path lengths between words, and strong local clustering. In addition, the distributions of the number of connections follow power laws that indicate a scale‐free pattern of connectivity, with most nodes having relatively few connections joined together through a small number of hubs with many connections. These regularities (...) have also been found in certain other complex natural networks, such as the World Wide Web, but they are not consistent with many conventional models of semantic organization, based on inheritance hierarchies, arbitrarily structured networks, or high‐dimensional vector spaces. We propose that these structures reflect the mechanisms by which semantic networks grow. We describe a simple model for semantic growth, in which each new word or concept is connected to an existing network by differentiating the connectivity pattern of an existing node. This model generates appropriate small‐world statistics and power‐law connectivity distributions, and it also suggests one possible mechanistic basis for the effects of learning history variables (age of acquisition, usage frequency) on behavioral performance in semantic processing tasks. (shrink)

We discuss a recent approach to investigating cognitive control, which has the potential to deal with some of the challenges inherent in this endeavour. In a model-based approach, the researcher defines a formal, computational model that performs the task at hand and whose performance matches that of a research participant. The internal variables in such a model might then be taken as proxies for latent variables computed in the brain. We discuss the potential advantages of such an approach for the (...) study of the neural underpinnings of cognitive control and its pitfalls, and we make explicit the assumptions underlying the interpretation of data obtained using this approach. (shrink)

Johnson-Laird and Byrne present a theory of conditional inference based upon the manipulation of mental models. In the present paper, the theory is critically examined with regard to its ability to account for psychological data, principally with respect to the rate at which people draw the four basic inferences of modus ponens, denial of the antecedent, affirmation of the consequent and modus tollens. It is argued first that the theory is unclear in its definition and in particular with regard to (...) predictions of problem difficulty. Clarification and specification of principles are consequently provided here. Next, it is argued that there are a number of phenomena in the conditional reasoning literature for which the theory cannot account in its present form. Specifically, the relatively frequency of DA and AC inferences on affirmative conditionals is not as predicted by the theory, differences occur between inferences on if then and only if rules beyond the capacity of the theory to explain and there is no account of the “negative conclusion bias” observed when negated components are introduced into the rules. A number of revisions to the mental model theory of conditional reasoning are proposed in order to account for these findings. (shrink)

We present statistical analyses of the large‐scale structure of 3 types of semantic networks: word associations, WordNet, and Roget's Thesaurus. We show that they have a small‐world structure, characterized by sparse connectivity, short average path lengths between words, and strong local clustering. In addition, the distributions of the number of connections follow power laws that indicate a scale‐free pattern of connectivity, with most nodes having relatively few connections joined together through a small number of hubs with many connections. These regularities (...) have also been found in certain other complex natural networks, such as the World Wide Web, but they are not consistent with many conventional models of semantic organization, based on inheritance hierarchies, arbitrarily structured networks, or high‐dimensional vector spaces. We propose that these structures reflect the mechanisms by which semantic networks grow. We describe a simple model for semantic growth, in which each new word or concept is connected to an existing network by differentiating the connectivity pattern of an existing node. This model generates appropriate small‐world statistics and power‐law connectivity distributions, and it also suggests one possible mechanistic basis for the effects of learning history variables (age of acquisition, usage frequency) on behavioral performance in semantic processing tasks. (shrink)

To compute is to execute an algorithm. More precisely, to say that a device or organ computes is to say that there exists a modelling relationship of a certain kind between it and a formal specification of an algorithm and supporting architecture. The key issue is to delimit the phrase of a certain kind. I call this the problem of distinguishing between standard and nonstandard models of computation. The successful drawing of this distinction guards Turing's 1936 analysis of computation against (...) a difficulty that has persistently been raised against it, and undercuts various objections that have been made to the computational theory of mind. (shrink)

Open peer commentary on the article “Circularity and the Micro-Macro-Difference” by Manfred Füllsack. Upshot: The target article is criticised because it conflates models of causation with causation itself. The arguments used in the target article to avoid a straightforward distinction between fine-grained measurements and the abstractions used to model them are discussed. The value of using the word “causation” to refer to atemporal models is questioned.

We prove the Main Gap for the class of a -models (sufficiently saturated models) of an arbitrary stable 1-based theory T . We (i) prove a strong structure theorem for a -models, assuming NDOP, and (ii) roughly compute the number of a -models of T in any given cardinality. The analysis uses heavily group existence theorems in 1-based theories.

In the context of the motor skill literature on observational learning and hierarchical skill structuring, Byrne & Russon's findings call into question their standpoint that great apes imitate the behaviour of role models at the programme level. The authors impose a hierarchical model on their observations without properly considering alternative explanations. One such possibility, which stems from a constraints perspective that they dismiss, is put forward.

The approach to teaching employed in the Dictionary of Medical Ethics (1) provides a model which might be adopted in other media. Most of the 150 authors were medical, but many represented other disciplines, and they wrote for similar professionals and for the general public. Medical ethics is derived from medical science and practice, moral philosophy, sociology, theology, the law and other disciplines, all of which make essential, distinctive and complementary contributions to knowledge and to teaching. Medical practitioners must play (...) the primary role, because they are responsible for clinical ethical decisions, but they need the co-operation and guidance of others. All who are concerned should work towards the development of a general moral consensus among the profession and public, which keeps abreast of scientific and technical advances and to which all are committed. (shrink)

Open peer commentary on the article ““Black Box” Theatre: Second-Order Cybernetics and Naturalism in Rehearsal and Performance” by Tom Scholte. Upshot: My aim is to show that “truthful” acting that emerges through improvisation is equivalent to the development of mutual forward models in the actors. If these models match those of the audience members, this is perceived as “truthful.”.

Context: Although there are rich descriptive accounts of skill acquisition in the literature, there are no satisfactory explanatory models of the cognitive processes involved. Problem: The aim of the paper is to explain some key phenomena frequently observed in the acquisition of motor skills: the loss of conscious access to knowledge of the structure of a skill and the awareness that an error has been made prior to the receipt of knowledge of results. Method: In the 1970s, the first author (...) implemented a computer program model of the cognitive processes involved in learning and skill acquisition, based on a series of empirical investigations. Recently, with assistance from the second author, the model has been reviewed, updated and re-implemented. Result: The model provides a constructivist account of skill acquisition and associated phenomena. Implications: The model adds to the understanding of motor skill acquisition and will be of interest to researchers and practitioners in physical therapy and sports science. It is also provides a constructivist cognitive architecture that can be fruitfully contrasted with non-constructivist cognitive architectures well-known in cognitive science. (shrink)

Rogers & McClelland (R&M) criticize models that rely on structured representations such as categories, taxonomic hierarchies, and schemata, but we suggest that structured models can account for many of the phenomena that they describe. Structured approaches and parallel distributed processing (PDP) approaches operate at different levels of analysis, and may ultimately be compatible, but structured models seem more likely to offer immediate insight into many of the issues that R&M discuss.

One usually identifies a particular collection of geometric objects with the models of general relativity. But within this standard collection lurk ‘physically unreasonable’ models of spacetime. If such models are ruled out, attention can be restricted to some sub-collection of ‘physically reasonable’ models which can be considered a variant theory of general relativity. Since we have yet to identify a privileged sub-collection of ‘physically reasonable’ models, it is helpful to think of ‘general relativity’ in a pluralistic way; we can study (...) a collection of such ‘physically reasonable’ collections of models. (shrink)

Individuals with body integrity identity disorder seek to address a non-delusional incongruity between their body image and their physical embodiment, sometimes via the surgical amputation of healthy body parts. Opponents to the provision of therapeutic healthy-limb amputation in cases of BIID make appeals to the envisioned harms that such an intervention would cause, harms such as the creation of a lifelong physical disability where none existed before. However, this concept of harm is often based on a normative biomedical model of (...) health and disability, a model which conflates amputation with impairment, and impairment with a disability. This article challenges the prima facie harms assumed to be inherent in limb amputation and argues in favour of a potential treatment option for those with BIID. To do this, it employs the social model of disability as a means to separate the concept of impairment and disability and thereby separate the acute and chronic harms of the practice of therapeutic healthy-limb amputation. It will then argue that provided sufficient measures are put in place to ensure that those with atypical bodily constructions are not disadvantaged, the chronic harms of elective amputation would cease to be. (shrink)

Individuals with body integrity identity disorder seek to address a non-delusional incongruity between their body image and their physical embodiment, sometimes via the surgical amputation of healthy body parts. Opponents to the provision of therapeutic healthy-limb amputation in cases of BIID make appeals to the envisioned harms that such an intervention would cause, harms such as the creation of a lifelong physical disability where none existed before. However, this concept of harm is often based on a normative biomedical model of (...) health and disability, a model which conflates amputation with impairment, and impairment with a disability. This article challenges the prima facie harms assumed to be inherent in limb amputation and argues in favour of a potential treatment option for those with BIID. To do this, it employs the social model of disability as a means to separate the concept of impairment and disability and thereby separate the acute and chronic harms of the practice of therapeutic healthy-limb amputation. It will then argue that provided sufficient measures are put in place to ensure that those with atypical bodily constructions are not disadvantaged, the chronic harms of elective amputation would cease to be. (shrink)

We analyse the effect of the regulatory T cells (Tregs) in the local control of the immune responses by T cells. We obtain an explicit formula for the level of antigenic stimulation of T cells as a function of the concentration of T cells and the parameters of the model. The relation between the concentration of the T cells and the antigenic stimulation of T cells is an hysteresis, that is unfold for some parameter values. We study the appearance of (...) autoimmunity from cross-reactivity between a pathogen and a self antigen or from bystander proliferation. We also study an asymmetry in the death rates. With this asymmetry we show that the antigenic stimulation of the Tregs is able to control locally the population size of Tregs. Other effects of this asymmetry are a faster immune response and an improvement in the simulations of the bystander proliferation. The rate of variation of the levels of antigenic stimulation determines if the outcome is an immune response or if Tregs are able to maintain control due to the presence of a transcritical bifurcation for some tuning between the antigenic stimuli of T cells and Tregs. This behavior is explained by the presence of a transcritical bifurcation. (shrink)

In this book Emma Ruttkamp demonstrates the power of the full-blown employment of the model-theoretic paradigm in the philosophy of science. Within this paradigm she gives an account of sciences as process and product. She expounds the "received statement" and the "non-statement" views of science, and shows how the model-theoretic approach resolves the spurious tension between these views. In this endeavour she also engages the views of a number of contemporary philosophers of science with affinity to model theory. This text (...) can be read by specialists working in philosophy of science or formal semantics, by logicians working on the structure of theories, and by students in philosophy of science - this text offers a thorough introduction to non-statement accounts of sciences as well as a discussion of the traditional statement account of science. (shrink)