Norms provide a valuable mechanism for establishing coherent cooperative behaviour in decentralised systems in which there is no central authority. One of the most influential formulations of norm emergence was proposed by Axelrod :1095–1111, 1986). This paper provides an empirical analysis of aspects of Axelrod’s approach, by exploring some of the key assumptions made in previous evaluations of the model. We explore the dynamics of norm emergence and the occurrence of norm collapse when applying the model over extended durations. It (...) is this phenomenon of norm collapse that can motivate the emergence of a central authority to enforce laws and so preserve the norms, rather than relying on individuals to punish defection. Our findings identify characteristics that significantly influence norm establishment using Axelrod’s formulation, but are likely to be of importance for norm establishment more generally. Moreover, Axelrod’s model suffers from significant limitations in assuming that private strategies of individuals are available to others, and that agents are omniscient in being aware of all norm violations and punishments. Because this is an unreasonable expectation, the approach does not lend itself to modelling real-world systems such as online networks or electronic markets. In response, the paper proposes alternatives to Axelrod’s model, by replacing the evolutionary approach, enabling agents to learn, and by restricting the metapunishment of agents to cases where the original defection is observed, in order to be able to apply the model to real-world domains. This work can also help explain the formation of a “social contract” to legitimate enforcement by a central authority. (shrink)

Paul E. Griffiths argues that most research on the emotions has been as misguided as Aristotelian efforts to study "superlunary objects" - objects...

Several authors have argued that causes differ in the degree to which they are ‘specific’ to their effects. Woodward has used this idea to enrich his influential interventionist theory of causal explanation. Here we propose a way to measure causal specificity using tools from information theory. We show that the specificity of a causal variable is not well-defined without a probability distribution over the states of that variable. We demonstrate the tractability and interest of our proposed measure by measuring the (...) specificity of coding DNA and other factors in a simple model of the production of mRNA. (shrink)

Advances in medicine in the latter half of the twentieth century have dramatically altered human bodies, expanding choices around what we do with them and how they connect to other bodies. Nowhere is this more so than in the area of reproductive technologies. Reproductive medicine and the laws surrounding it in the UK have reconfigured traditional boundaries surrounding parenthood and the family. Yet culture and regulation surrounding RTs have combined to try to ensure that while traditional boundaries may be pushed, (...) they are reconstructed in similar ways. This paper looks at the most recent RT to be permitted in the UK, mitochondria replacement therapy. Despite controversial media headlines surrounding the technique, MRT is in fact an example of how science and regulation seek to expand models of traditional relatedness in a way that doesn’t challenge the existing order. Yet, like other RTs, while attempts are made to ensure it doesn’t push traditional boundaries too far, fissures and inconsistencies appear in law and culture, which give interesting insights into how genetics, parentage and identity are being mediated in new but familiar ways. (shrink)

ABSTRACTMany philosophers have suggested that disagreement is good grounds for scepticism. One response says that disagreement-motivated scepticism can be mitigated to some extent by the thesis that philosophical disputes are often verbal, not genuine. I consider the implications of this anti-sceptical strategy, arguing that it trades one kind of scepticism for others. I conclude with suggestions for further investigation of the epistemic significance of the nature of philosophical disagreement.

David Papineau (2003; 2005) has discussed the relationship between social learning and the family of postulated evolutionary processes that includes ‘organic selection’, ‘coincident selection’, ‘autonomisation’, ‘the Baldwin effect’ and ‘genetic assimilation’. In all these processes a trait which initially develops in the members of a population as a result of some interaction with the environment comes to develop without that interaction in their descendants. It is uncontroversial that the development of an identical phenotypic trait might depend on an interaction with (...) the environment in one population and not in another. For example, some species of passerine songbirds require exposure to species-typical songs in order to reproduce those songs whilst others do not. Hence we can envisage a species beginning with one type of developmental pathway and evolving the other type. If, however, the successive evolution of these two developmental pathways were a mere coincidence, selection first favoring the ability to acquire the trait and later, quite independently, favoring the ability to develop it autonomously, then this would not be a distinctive kind of evolutionary process, but merely two standard instances of natural selection. George Gaylord Simpson pointed this out in the paper that gave us the term ‘Baldwin effect’ (Simpson, 1953). The real interest of the Baldwin effect and its relatives lies in the mechanisms which might link the evolution of the two developmental pathways, so that acquiring the trait through interaction with the environment makes it more likely that later generations will evolve the ability to acquire the same trait without that interaction. (shrink)

Information changes as it is passed from person to person, with this process of cultural transmission allowing the minds of individuals to shape the information that they transmit. We present mathematical models of cultural transmission which predict that the amount of information passed from person to person should affect the rate at which that information changes. We tested this prediction using a function-learning task, in which people learn a functional relationship between two variables by observing the values of those variables. (...) We varied the total number of observations and the number of those observations that take unique values. We found an effect of the number of observations, with functions transmitted using fewer observations changing form more quickly. We did not find an effect of the number of unique observations, suggesting that noise in perception or memory may have affected learning. (shrink)

In many learning or inference tasks human behavior approximates that of a Bayesian ideal observer, suggesting that, at some level, cognition can be described as Bayesian inference. However, a number of findings have highlighted an intriguing mismatch between human behavior and standard assumptions about optimality: People often appear to make decisions based on just one or a few samples from the appropriate posterior probability distribution, rather than using the full distribution. Although sampling-based approximations are a common way to implement Bayesian (...) inference, the very limited numbers of samples often used by humans seem insufficient to approximate the required probability distributions very accurately. Here, we consider this discrepancy in the broader framework of statistical decision theory, and ask: If people are making decisions based on samples—but as samples are costly—how many samples should people use to optimize their total expected or worst-case reward over a large number of decisions? We find that under reasonable assumptions about the time costs of sampling, making many quick but locally suboptimal decisions based on very few samples may be the globally optimal strategy over long periods. These results help to reconcile a large body of work showing sampling-based or probability matching behavior with the hypothesis that human cognition can be understood in Bayesian terms, and they suggest promising future directions for studies of resource-constrained cognition. (shrink)

Languages are transmitted from person to person and generation to generation via a process of iterated learning: people learn a language from other people who once learned that language themselves. We analyze the consequences of iterated learning for learning algorithms based on the principles of Bayesian inference, assuming that learners compute a posterior distribution over languages by combining a prior (representing their inductive biases) with the evidence provided by linguistic data. We show that when learners sample languages from this posterior (...) distribution, iterated learning converges to a distribution over languages that is determined entirely by the prior. Under these conditions, iterated learning is a form of Gibbs sampling, a widely-used Markov chain Monte Carlo algorithm. The consequences of iterated learning are more complicated when learners choose the language with maximum posterior probability, being affected by both the prior of the learners and the amount of information transmitted between generations. We show that in this case, iterated learning corresponds to another statistical inference algorithm, a variant of the expectation-maximization (EM) algorithm. These results clarify the role of iterated learning in explanations of linguistic universals and provide a formal connection between constraints on language acquisition and the languages that come to be spoken, suggesting that information transmitted via iterated learning will ultimately come to mirror the minds of the learners. (shrink)

This chapter analyzes the notion of human nature and the concept of inner nature from the perspective of developmental systems theory. It explores the folkbiology of human nature and looks at three features associated with traits that are expressions of the inner nature that organisms inherit from their parents: fixity, typicality, teleology.

It is argued that while quantum mechanics contains nonlocal or entangled states, the instantaneous or nonlocal influences sometimes thought to be present due to violations of Bell inequalities in fact arise from mistaken attempts to apply classical concepts and introduce probabilities in a manner inconsistent with the Hilbert space structure of standard quantum mechanics. Instead, Einstein locality is a valid quantum principle: objective properties of individual quantum systems do not change when something is done to another noninteracting system. There is (...) no reason to suspect any conflict between quantum theory and special relativity. (shrink)

The air of consensus in these reviews is, as McNaughton notes, methodological. The future of philosophical emotion theory is in synthesising what a wide range of science has to tell us and using this to reflect on the nature of mind in general. In this respect the philosophy of emotion has been seriously out of step with the rest of a very exciting contemporary scene in the philosophy of mind. Whatever the shortcomings of my own attempt to bring the philosophy (...) of emotion into contact with the rest of the discipline, I predict that this ‘reclaimed land’ will prove fertile. (shrink)

This article offers a prolegomenon for an African feminist philosophy. The prompt for this as an interrogation of Oluwole’s claim that an African feminist philosophy cannot develop until identifiable African worldviews that guide the relationship between men and women have been established. She argues that until there is general agreement about the nature of African philosophy itself, African feminist philosophy will remain impoverished. I critique this claim, unpacking Oluwole’s argument, and examine the contested nature of both African and Western philosophy. (...) Drawing from the work of Mignolo and decolonial thinking, I then argue for the possibility of “epistemic disobedience” concerning the emergence of an African feminist philosophy. Engaging with precolonial African examples which disrupt modern normative gender assumptions and looking at the project of decoloniality, I issue a call for an African feminist philosophy unfettered by the falsely universal claims of modernity/coloniality. My call is for an African feminist philosophy from African loci of enunciation, rooted in the epistemes and experiences of African women. (shrink)

The interventionist account of causation offers a criterion to distinguish causes from non-causes. It also aims at defining various desirable properties of causal relationships, such as specificity, proportionality and stability. Here we apply an information-theoretic approach to these properties. We show that the interventionist criterion of causation is formally equivalent to non-zero specificity, and that there are natural, information-theoretic ways to explicate the distinction between potential and actual causal influence. We explicate the idea that the description of causes should be (...) proportional to that of their effects. Then we draw a distinction between two ideas in the existing literature, the range of invariance of a causal relationship and its stability. The range of invariance is related to specificity and range of causal values. Stability concerns the effect of additional variables on the relationship between some focal pair of cause and effect variables. We show how to distinguish and measure the direct influence of background variables on the effect variable, and their influence on the relationship between the focal cause and the effect variable. Finally, we discuss the limitations of the information-theoretic approach, and offer prospects for complementary approaches. (shrink)

Dobzhansky argued that biology only makes sense if life on earth has a shared history. But his dictum is often reinterpreted to mean that biology only makes sense in the light of adaptation. Some philosophers of science have argued in this spirit that all work in ‘proximal’ biosciences such as anatomy, physiology and molecular biology must be framed, at least implicitly, by the selection histories of the organisms under study. Others have denied this and have proposed non-evolutionary ways in which (...) biologists can frame these investigations. This paper argues that an evolutionary perspective is indeed necessary, but that it must be a forward-looking perspective informed by a general understanding of the evolutionary process, not a backward-looking perspective informed by the specific evolutionary history of the species being studied. Interestingly, it turns out that there are aspects of proximal biology that even a creationist cannot study except in the light of a theory of their effect on future evolution. (shrink)

While a growing body of scholarship identifies urban agriculture’s broad suite of benefits and drivers, it remains unclear how motivations to engage in urban agriculture (UA) interrelate or how they differ across cities and types of organizations. In this paper, we draw on survey responses collected from more than 250 UA organizations and businesses from 84 cities across the United States and Canada. Synthesizing the results of our quantitative analysis of responses (including principal components analysis), qualitative analysis of textual data (...) excerpted from open-ended responses, and a review of existing literature, we describe six motivational frames that appear to guide organizations and businesses in their UA practice: Entrepreneurial, Sustainable Development, Educational, Eco-Centric, DIY Secessionist, and Radical. Identifying how practitioners stack functions and frame their work is a first step in helping to differentiate the diverse and often contradictory efforts transforming urban food environments. We demonstrate that a wide range of objectives drive UA and that political orientations and discourses differ by geography, organizational type and size, and funding regime. These six paradigms provide a basic framework for understanding UA that can guide more in-depth studies of the gap between intentions and outcomes, while helping link historically and geographically specific insights to wider social and political economic processes. (shrink)

In the years leading up to the Second World War the ethologists Konrad Lorenz and Nikolaas Tinbergen, created the tradition of rigorous, Darwinian research on animal behavior that developed into modern behavioral ecology. At first glance, research on specifically human behavior seems to exhibit greater discontinuity that research on animal behavior in general. The 'human ethology' of the 1960s appears to have been replaced in the early 1970s by a new approach called ‘sociobiology’. Sociobiology in its turn appears to have (...) been replaced by an approach calling itself Evolutionary Psychology. Closer examination, however, reveals a great deal of continuity between these schools. At present, whilst Evolutionary Psychology is the most visible form of evolutionary psychology, empirical and theoretical research on the evolution of mind and behavior is marked by a diversity of ideas and approaches and it is far from clear which direction(s) the field will take in future. (shrink)

In this article Morwenna Griffiths argues that teacher education policies should be predicated on a proper and full understanding of pedagogical relations as contingent, responsive, and adaptive over the course of a career. Griffiths uses the example of the recent report on teacher education in Scotland, by Graham Donaldson, to argue that for all the report's considerable merits, it remains deficient because it does not attend to the complexity and contingency of pedagogical relations. The complexity arises from the (...) existence of (at least) four analytically distinguishable pedagogical relations, each of which interacts with the others. These relations are contingent on the embodiment of teacher and students and on the political and sociocultural context of the class. Therefore they are also contingent on time, as teachers age and as the political and sociocultural context changes. Griffiths concludes the article with suggestions for creating a teaching profession in which teachers are reflectively and critically adaptive during the course of their careers. (shrink)

Developmental systems theory is a general theoretical perspective on development, heredity and evolution. It is intended to facilitate the study of interactions between the many factors that influence development without reviving `dichotomous' debates over nature or nurture, gene or environment, biology or culture. Several recent papers have addressed the relationship between DST and the thriving new discipline of evolutionary developmental biology. The contributions to this literature by evolutionary developmental biologists contain three important misunderstandings of DST.

AbstractClimate change is a complex, multilevel challenge with implications of failure unimaginable for current and future generations. However, despite the Paris Agreement supporting the imperative for action in an atmosphere of scientific consensus, organisations are failing to take the decisive action required. We argue that this lack of organisational action needs to be addressed by examining the cognitive foundations of managerial decisions on climate change and sustainability. A systematic review of research on cognition, sensemaking and managerial interpretation where it is (...) linked to climate change or sustainability is presented within this article. The results detail a multilevel analysis highlighting key themes and the core concepts from the literature including factors shaping the cognitive process, to elucidate reasons for inaction and potential for promoting change. Through this research, an integrated model is presented demonstrating the interaction of factors, cognitive processes and outcomes. Based on this analysis, potential reasons for inaction are proposed and countered by three potential solutions linked to leadership, social norms and structural reform. (shrink)

This volume represents an important contribution to Peirce’s work in mathematics and formal logic. An internationally recognized group of scholars explores and extends understandings of Peirce’s most advanced work. The stimulating depth and originality of Peirce’s thought and the continuing relevance of his ideas are brought out by this major book.

There remains a division between the work of philosophers who draw on the sciences of the mind to understand emotion and those who see the philosophy of emotion as more self-sufficient. This article examines this methodological division before reviewing some of the debates that have figured in the philosophical literature of the last decade: whether emotion is a single kind of thing, whether there are discrete categories of emotion, and whether emotion is a form of perception. These questions have been (...) addressed by both sides of the methodological divide and the integration of these two approaches would have clear benefits. (shrink)

The widely cited Nuffield Council on Bioethics ‘Intervention Ladder’ structurally embodies the assumption that personal autonomy is maximized by non-intervention. Consequently, the Intervention Ladder encourages an extreme ‘negative liberty’ view of autonomy. Yet there are several alternative accounts of autonomy that are both arguably superior as accounts of autonomy and better suited to the issues facing public health ethics. We propose to replace the one-sided ladder, which has any intervention coming at a cost to autonomy, with a two-sided ‘Balanced Intervention (...) Ladder,’ where intervention can either enhance or diminish autonomy. We show that not only the alternative, richer accounts of autonomy but even Mill’s classic version of negative liberty puts some interventions on the positive side of the ladder. (shrink)

Biological sexes (male, female, hermaphrodite) are defined by different gametic strategies for reproduction. Sexes are regions of phenotypic space which implement those gametic reproductive strategies. Individual organisms pass in and out of these regions – sexes - one or more times during their lives. Importantly, sexes are life-history stages rather than applying to organisms over their entire lifespan. This fact has been obscured by concentrating on humans, and ignoring species which regularly change sex, as well as those with non-genetic or (...) facultatively genetic sex determination systems. But the general point applies equally to humans. Assigning sexes to pre-reproductive life history stages involves ‘prospective narration’ – classifying the present in terms of its anticipated future. Assigning sexes to adult stages of non-reproductive castes or non-reproductive individuals is a complex matter whose biological meaning differs from case to case. The chromosomal and phenotypic ‘definitions’ of biological sex that are contested in philosophical discussions of sex are actually operational definitions which track gametic sex more or less effectively in some species or group of species. Neither ‘definition’ can be stated for species in general except by defining them in terms of gametic sex. The gametic definition of sex also features in widely accepted models which explain why two biological sexes – either in separate individuals or combined in hermaphroditic individuals - are almost universal in multicellular species. Finally, the fact that a species has only two biological sexes does not imply that every member of the species is either male, female or hermaphroditic, or that the sex of every individual organism is clear and determinate. The idea of biological sex is critical for understanding the diversity of life, but ill-suited to the job of determining the social or legal status of human beings as men or women. (shrink)

We argue that philosophical and historical research can constitute a ‘Biohumanities’ which deepens our understanding of biology itself; engages in constructive 'science criticism'; helps formulate new 'visions of biology'; and facilitates 'critical science communication'. We illustrate these ideas with two recent 'experimental philosophy' studies of the concept of the gene and of the concept of innateness conducted by ourselves and collaborators.

Especially insightful are articles on ethics and gender, autonomy and pornography, feelings, and a responsible and democratic epistemology." —Choice The essays in this book introduce to American readers the work of a group of British ...

Identifying sporting talent remains a difficult task due to the complex nature of sport. Technical skill assessments are used throughout the talent pathway to monitor athletes in an attempt to more effectively predict future performance. These assessments however, largely focus on the isolated execution of key skills devoid of any game context. When assessments are representative of match-play and applied in a setting where all four components of competition (i.e., technical, tactical, physiological and psychological) are assessed within an integrated approach, (...) prediction of talent is more likely to be successful. This article explores the current talent identification technical skill assessments, with a particular focus on Australian Football, and proposes a 5-level performance assessment model for athlete assessment. The model separates technical game skill on a continuum from Level-1 (i.e., laboratory analysis) to Level-5 (i.e., match-play). These levels, using the assumptions of the expert performance model and representative learning design theory, incorporate a step-wise progression of performance demands to more closely represent match-play conditions. The proposed model will provide researchers and practitioners with a structured framework to consider when assessing, or developing, new assessments of technical game-based skill. (shrink)

There is a diversity of ‘ethical practices’ within medicine as an institutionalised profession as well as a need for ethical specialists both in practice as well as in institutionalised roles. This Brief offers a social perspective on medical ethics education. It discusses a range of concepts relevant to educational theory and thus provides a basic illumination of the subject. Recent research in the sociology of medical education and the social theory of Pierre Bourdieu are covered. In the end, the themes (...) of Bourdieuan Social Theory, socio-cultural apprenticeships and the ‘characterological turn’ in medical education are draw together the context of medical ethics education. ​. (shrink)

-/- Professor Hick's recent contribution to Religious Studies, ‘On Grading Religions’, is, like all his work, lucidly written and full of philosophical meat. A complete discussion of his paper in the light of his earlier work would require a lengthy study for which there is no space here; the intention of this short reply to Professor Hick is different. We feel that the view expressed in this and other works of Professor Hick's is in danger of becoming the conventional wisdom (...) about the functions of reason in assessing religious truth-claims among philosophers of religion on both sides of the Atlantic, and that this should not be permitted to happen without some wider ventilation of the extremely important philosophical issues at stake. This reply is thus an attempt to stimulate controversy and to explore alternatives. (shrink)

The phenomenological starting point of this paper is the world of the bioethical subject, the person engaged in moral deliberation about practices of intervention on living bodies. This paper develops a perspective informed by the hermeneutic tradition in phenomenology, approaching bioethical thinking as situated within specific contexts of meaning and conceptuality, frameworks through which the phenomena of the world are interpreted and made sense of by the reasoning subject. It focuses on one dimension of the hermeneutic world of contemporary bioethics, (...) that of the relation between bioethics and biological science. This paper shows how taking a phenomenological-hermeneutic perspective can highlight an important but often overlooked way in which biology helps to structure spaces of bioethical sense-making, with substantive consequences for moral judgement. Bioscientific discourse provides us with interpretive resources for making sense of the living world around us and within us. Different interpretive resources reflect different assumptions about the ontology of living beings, humans included. Since, as is argued here, judgements about moral significance in bioethics can depend upon suppositions about the ontology of life, the way that scientific discourse interpretively constitutes the phenomena of life as intentional objects can thereby channel moral thinking in particular ways. The central thesis of this paper is that critical engagement with this ‘hermeneutics of biology’ is vital for contemporary bioethics. To illustrate, the paper explores the hermeneutic constitution of the genome and its relationship to issues of human identity in the context of genetic technology. Alternative interpretations of the genome—as ‘programme’ or as ‘developmental resource’—differently shape bioethical reasoning in this context. Choices of description in bioscience are in this way partly ethical questions, questions about how we ought to comport ourselves towards each other and the living world beyond. (shrink)

Although some doctors celebrated when the Court of Appeal overturned Hadiza Bawa-Garba’s erasure from the medical register, it is argued here that in many ways the ruling is by no means good news for the medical profession. Doctors’ interests are served by transparent professional tribunals but the Court of Appeal’s approach to the GMC Sanctions Guidance risks increasing opacity in decision-making. Close attention to systemic factors in the criminal trial protects doctors yet the Court of Appeal states that the structural (...) circumstances surrounding Bawa-Garba’s failings were only of peripheral relevance to her conviction. Public confidence in the profession is undermined when convicted doctors return to work because the public de facto do not understand the nuance of gross negligence manslaughter law. Rather than changing the law to make the regulator more lenient towards doctors, it would be better to ensure that doctors are only convicted of gross negligence manslaughter when their conduct is so serious that they ought to be struck off. (shrink)

We show that there is a limit lemma for enumeration reducibility to 0 e ', analogous to the Shoenfield Limit Lemma in the Turing degrees, which relativises for total enumeration degrees. Using this and `good approximations' we prove a jump inversion result: for any set W with a good approximation and any set X< e W such that W≤ e X' there is a set A such that X≤ e A< e W and A'=W'. (All jumps are enumeration degree jumps.) (...) The degrees of sets with good approximations include the Σ0 2 degrees and the n-CEA degrees. (shrink)