A general framework for analysing the effects of variability and the effects of interruptions on foraging is presented. The animal is characterised by its level of energetic reserves, x. We consider behaviour over a period of time [0,T]. A terminal reward function R(x) determines the expected future reproductive success of an animal with reserves x at time T. For any state x at a time in the period, we give the animal a choice between various options and then constrain it (...) to follow a background strategy. The best option is the one that maximizes expected future reproductive success. Using this framework, we show that sensitivity to variability in amount of energy gained is logically distinct from sensitivity to variability in the time at which food is obtained. We also show that incorporating interruptions results in both a preference for variability in time and a preference for a reward followed by a delay as opposed to the same delay before the reward. (shrink)

We present a general framework for analyzing the contribution to reproductive success of a behavioural action. An action may make a direct contribution to reproductive success, but even in the absence of a direct contribution it may make an indirect contribution by changing the animal's state. We consider actions over a period of time, and define a reward function that characterizes the relationship between the animal's state at the end of the period and its future reproductive success. Working back from (...) the end of the period using dynamic programming, the optimal action as a function of state and time can be found. The procedure also yields a measure of the cost, in terms of future reproductive success, of a suboptimal action. These costs provide us with a common currency for comparing activities such as eating and drinking, or eating and hiding from predators. The costs also give an indication of the robustness of the conclusions that can be drawn from a model. We review how our framework can be used to analyze optimal foraging decisions in a stochastic environment. We also discuss the modelling of optimal daily routines and provide an illustration based on singing to attract a mate. We use the model to investigate the features that can produce a dawn song burst in birds. State is defined very broadly so that it includes the information an animal has about its environment. Thus, exploration and learning can be included within the framework. (shrink)

It is shown that in a range of models, the probability that a forager dies from starvation is, to a good approximation, an exponential function of energy reserves. Using a time and energy budget for a 19g passerine, we explore the consequences, in terms of starvation and predation, of various levels of energy reserves. It is shown that there exists an optimal level L of reserves at which total mortality (starvation plus predation) is minimized. L increases when the environment deteriorates (...) as a result of a decrease in either temperature or mean gross gain or an increase in the mean search time. The effect of combined deteriorations is greater than the sum of their individual effects. At L, the probability of predation is much higher than the probability of starvation. A simple analytic model suggests that this result will be fairly general, but also indicates conditions under which the result might not hold. (shrink)

Matrix population models provide a natural tool to analyse state-dependent life-history strategies. Reproductive value and the intrinsic rate of natural increase under a strategy, and the optimal life-history strategy can all be easily characterised using projection matrices. The resultant formulae, however, are not directly comparable with the corresponding formulae for age structured populations such as Lotka's equations and Fisher's formula for reproductive value. This is because formulae involving projection matrices lose track of what happens to an individual over its lifetime (...) and are only concerned with expected numbers of descendants one time step in the future. In contrast the usual age-dependent formulae explicitly followed a single individual through from birth to death.In this paper I show how the state-dependent formulae can be rewritten to be directly comparable with the standard age-structured formulae. Although the formulae are intuitively obvious the decomposition into current and future reproductive success differs from that previously given and is, I suggest, a more natural definition. The derivation of appropriate equations for optimal life-histories relies on results from dynamic programming theory; and is much more general and easier than previous derivations. (shrink)

John Maynard Smith was the founder of evolutionary game theory. He has also been the major influence on the direction of this field, which now pervades behavioural ecology and evolutionary biology. In its original formulation the theory had three components: a set of strategies, a payoff structure, and a concept of evolutionary stability. These three key components are still the basis of the theory, but what is assumed about each component is often different to the original assumptions. We review (...) modern approaches to these components. We emphasis that if a game is considered in isolation, and arbitrary payoffs are assumed, then the payoffs may not be consistent with other components of the system which are not modelled. Modelling the whole system, including not only the focal game, but also the future behaviour of the players and the behaviour of other population members, allows a consistent model to be constructed. We illustrate this in the case of two models of parental care, showing how linking a focal game to other aspects of the system alters what is predicted. (shrink)

Rolls discusses various adaptive explanations of physiological processes and the emotions. We give a critical analysis of some of these from the perspective of behavioural ecology. While agreeing with the approach adopted by Rolls, we identify topics that could have been better presented by making use of the existing literature.

In this volume, John Warner grapples with one of Jean-Jacques Rousseau’s chief preoccupations: the problem of self-interest implicit in all social relationships. Not only did Rousseau never solve this problem, Warner argues, but he also believed it was fundamentally unsolvable—that social relationships could never restore wholeness to a self-interested human being. This engaging study is founded on two basic but important questions: what do we want out of human relationships, and are we able to achieve what we are after? (...) Warner traces his answers through the contours of Rousseau’s thought on three distinct types of relationships—sexual love, friendship, and civil or political association—as well as alternate interpretations of Rousseau, such as that of the neo-Kantian Rawlsian school. The result is an insightful exploration of the way Rousseau inspires readers to imbue social relations with purpose and meaning, only to show the impossibility of reaching wholeness through such relationships. While Rousseau may raise our hopes only to dash them, Rousseau and the Problem of Human Relations demonstrates that his ambitious failure offers unexpected insight into the human condition and into the limits of Rousseau’s critical act. (shrink)

What's a one-time bishop of Hippo got to do with the third millennium? -- The foundations of Augustine's moral Empiricism: truth, love and sin -- Scientific philosophy and first-person confession -- Against autonomy: ought and can -- The state: persecution, war, justice and regret -- Against political panaceas -- Utilitarians and Kantians: a parallel journey to triviality -- Rights theory -- The inevitable irrelevance of most contemporary theology -- Austin's brag: conventional relativism, nihilism or the Catholic tradition -- Transcript of (...) a radio interview with Bishop Austin Redivivus: 1.4.2016. (shrink)

Scientists and 'anti-scientists' alike need a more realistic image of science. The traditional mode of research, academic science, is not just a 'method': it is a distinctive culture, whose members win esteem and employment by making public their findings. Fierce competition for credibility is strictly regulated by established practices such as peer review. Highly specialized international communities of independent experts form spontaneously and generate the type of knowledge we call 'scientific' - systematic, theoretical, empirically-tested, quantitative, and so on. Ziman shows (...) that these familiar 'philosophical' features of scientific knowledge are inseparable from the ordinary cognitive capabilities and peculiar social relationships of its producers. This wide-angled close-up of the natural and human sciences recognizes their unique value, whilst revealing the limits of their rationality, reliability, and universal applicability. It also shows how, for better or worse, the new 'post-academic' research culture of teamwork, accountability, etc. is changing these supposedly eternal philosophical characteristics. (shrink)

Why believe in the findings of science? John Ziman argues that scientific knowledge is not uniformly reliable, but rather like a map representing a country we cannot visit. He shows how science has many elements, including alongside its experiments and formulae the language and logic, patterns and preconceptions, facts and fantasies used to illustrate and express its findings. These elements are variously combined by scientists in their explanations of the material world as it lies outside our everyday experience. (...) class='Hi'>John Ziman’s book offers at once a valuably clear account and a radically challenging investigation of the credibility of scientific knowledge, searching widely across a range of disciplines for evidence about the perceptions, paradigms and analogies on which all our understanding depends. (shrink)

In this 1976 volume, Professor Ziman paints a broad picture of science, and of its relations to the world in general. He sets the scene by the historical development of scientific research as a profession, the growth of scientific technologies out of the useful arts, the sources of invention and technical innovation, and the advent of Big Science. He then discusses the economics of research and development, the connections between science and war, the nature of science policy and the moral (...) dilemmas of social responsibility in science. Each topic is introduced by reference to easily understandable particular examples, with a large number of illustrations chosen to bring out the concreteness and reality of science as a human activity. Professor Ziman gives a chapter-by-chapter list of suggested topics for oral and written discussion, intended to provoke critical, sceptical attitudes to simplified solutions to real issues, and comments briefly on relevant books and other sources. (shrink)

This book is a provocative contribution to contemporary ethical theory challenging foundational conceptions of character that date back to Aristotle. John Doris draws on behavioral science, especially social psychology, to argue that we misattribute the causes of behavior to personality traits and other fixed aspects of character rather than to the situational context. More often than not it is the situation not the nature of the personality that really counts. The author elaborates the philosophical consequences of this research for (...) a whole array of ethical theories and shows that, once rid of the misleading conception of motivation, moral psychology can support more robust ethical theories and more humane ethical practices. (shrink)

The purpose of this book is to give a coherent account of the different perspectives on science and technology that are normally studied under various disciplinary heads such as philosophy of science, sociology of science and science policy. It is intended for students embarking on courses in these subjects and assumes no special knowledge of any science. It is written in a direct and simple style, and technical language is introduced very sparingly. As various perspectives are sketched out in this (...) book, the reader moves towards a consistent conception of contemporary science as a rapidly changing social institution that has already grown out of its traditional forms and plays a central role in society at large. It will appeal to students in a wide range of scientific disciplines and complement well Professor Ziman's earlier books. (shrink)

Do we know what we're doing, and why? Psychological research seems to suggest not: reflection and self-awareness are surprisingly uncommon and inaccurate. John M. Doris presents a new account of agency and responsibility, which reconciles our understanding of ourselves as moral agents with empirical work on the unconscious mind.

Is the science of moral cognition usefully modelled on aspects of Universal Grammar? Are human beings born with an innate 'moral grammar' that causes them to analyse human action in terms of its moral structure, with just as little awareness as they analyse human speech in terms of its grammatical structure? Questions like these have been at the forefront of moral psychology ever since John Mikhail revived them in his influential work on the linguistic analogy and its implications for (...) jurisprudence and moral theory. In this seminal book, Mikhail offers a careful and sustained analysis of the moral grammar hypothesis, showing how some of John Rawls' original ideas about the linguistic analogy, together with famous thought experiments like the trolley problem, can be used to improve our understanding of moral and legal judgement. (shrink)

In this book John Ziman seeks the answers to crucial questions facing scientists who need to change the direction of their careers.

Literature on the Stoa usually concentrates on historical accounts of the development of the school and on Stoicism as a social movement. In this 1977 text, Professor Rist's approach is to examine in detail a series of philosophical problems discussed by leading members of the Stoic school. He is not concerned with social history or with the influence of Stoicism on popular beliefs in the Ancient world, but with such questions as the relation between Stoicism and the thought of Aristotle, (...) the meaning and purpose of such Stoic paradoxes as 'all sins are equal', and the philosophical interrelation of Stoic physics and ethics. There are chapters on aspects of Stoic logic and on the thought of particular thinkers such as Panaetius and Posidonius, but ethical problems occupy the centre of the stage. (shrink)

A discussion of the human side of science, originally published in 1981.

The Moral Psychology Handbook offers a survey of contemporary moral psychology, integrating evidence and argument from philosophy and the human sciences.

This article presents and discusses transcripts of some 270 explanations subjects provided subsequently for recognition memory decisions that had been associated with remember, know, or guess responses at the time the recognition decisions were made. Only transcripts for remember responses included reports of recollective experiences, which seemed mostly to reflect either effortful elaborative encoding or involuntary reminding at study, especially in relation to the self. Transcripts for know responses included claims of just knowing, and of feelings of familiarity. These transcripts (...) indicated that subjects were often quite confident of the accuracy of their decisions, compared with those for guess responses. Transcripts for decisions associated with guess responses also expressed feelings of familiarity but additionally revealed various strategies and inferences that did not directly reflect memory for studied items. The article concludes with a historical and theoretical overview of some interpretations of the states of awareness measured by these responses. (shrink)

In this paper we open up the topic of ethical corporate identity: what we believe to be a new, as well as highly salient, field of inquiry for scholarship in ethics and corporate social responsibility. Taking as our starting point Balmer’s (in Balmer and Greyser, 2002) AC2ID test model of corporate identity – a pragmatic tool of identity management – we explore the specificities of an ethical form of corporate identity. We draw key insights from conceptualizations of corporate social responsibility (...) and stakeholder theory. We argue ethical identity potentially takes us beyond the personification of the corporation. Instead, ethical identity is seen to be formed relationally, between parties, within a community of business and social exchange. Extending the AC2ID test model, we suggest the management of ethical identity requires a more socially, dialogically embedded kind of corporate practice and greater levels of critical reflexivity. (shrink)

This major work constitutes a significant attempt to provide a detailed and accurate account of the character and effects of Augustine's thought as a whole. It describes the transformation of Greco-Roman philosophy into the version that was to become the most influential in the history of Western thought. Augustine weighed some of the major themes of classical philosophy and ancient culture against the truth he found in the Bible and Catholic tradition, and reformulated these in Christian dress.

Plato is associated with the idea that the body holds us back from knowing ultimate reality and so we should try to distance ourselves from its influence. This sentiment appears is several of his dialogues including Theaetetus where the flight from the physical world is compared to becoming like God. In some major dialogues of Plato's later career such as Philebus and Laws, however, the idea of becoming like God takes a different turn. God is an intelligent force that tries (...) to create order in the physical world. I argue that likeness to God in these dialogues involves imitating God's effort by trying to order our bodies, souls, and societies as intelligence directs. Becoming like Plato's God is not to abandon the world. It is to improve it. (shrink)

John M. Doris has been a leading proponent of interdisciplinary approaches to moral psychology for decades. His work has transformed the way in which philosophers approach questions of character, virtue, and agency. This selection of his work focuses on the ways in which human personality orders moral cognition and behaviour.

The author attempts to chart Aristotle's philosophical progress, using the techniques of both philology and philosophical analysis. His aim is to see where Aristotle came from philosophically and what impelled him to develop his ideas in particular directions. The first chapter is an overall account of Aristotle's philosophical activities as his life progressed; the remaining sections discuss in detail the development of such key themes as the possibility of metaphysics, activity and potentiality, categories, mind, substance, God, human nature and happiness, (...) and the nature of society, including the proper role for women and the phenomenon of slavery. (shrink)

With an inside view from an expert in the field and a clear and engaging writing style, Asian Philosophies, Seventh Edition invites students and professors to think along with the great minds of the Asian traditions. Eminent scholar and teacher John M. Koller has devoted his life to understanding and explaining Asian thought and practice. He wrote this text to give students access to the rich philosophical and religious ideas of both South and East Asia. New to this seventh (...) edition: Added material on Confucianism, including focused coverage of (1) the Analects and society and (2) ren and nature; Additional information on Theravada Buddhism, Vajrayana Buddhism, and Zen Buddhism as well as new in-depth coverage of ecological attitudes in Buddhism; Expanded coverage of ecological attitudes in all of the Asian traditions; Brief excerpts from primary sources to help better explain the key concepts; Added timelines for essential texts in each tradition; Improved Glossary and Pronunciation Guide; Additional text boxes, to help students quickly understand key ideas, texts, and concepts; Updated Further Reading sections. (shrink)

Malthus' theological ideas were most clearly presented in the final two chapters of the first edition of his Essay on the Principle of Population. They can be classified under eight main headings. He admitted that the pressure of population causes much misery and evil, but he did not accept that this in any way impugned the benevolence of the Creator. He situated the population problem within the general context of the problem of evil, and argued that population pressure is permitted (...) and ordained by the Creator as a means of stimulating mankind to attain a higher good. He opposed the traditional Christian notion that this world is a state of trial, with population pressure being one aspect of that trial. He believed that this notion of a state of trial is inconsistent with the notion of an omniscient Creator, and that it is therefore necessary to reject the notion of a state of trial in order to save the notion of Divine omniscience. Instead of viewing this world as a state of trial, he viewed it ‘as the mighty process of God, not for the trial, but for the creation and formation of mindr. This notion of the growth of mind is the central aspect of Malthus' theology. He expressed doubts about the omnipotence of the Creator, arguing that God did not have the power to create perfect human beings instantaneously, but required a certain process or a certain time to form beings with ‘exalted qualities of mind’. Malthus seemed to argue that Divine omnipotence and Divine benevolence are incompatible – because a truly benevolent creator would not have subjected mankind to the miseries of this world if He had the power to create a perfect world. Malthus was prepared to sacrifice the notion of Divine omnipotence in order to save the notion of Divine benevolence. He saw the principle of population as part of the Divine plan for the replenishment of the earth, i.e. its full cultivation and peopling. His attitude to worldly pleasures and comforts was distinctly unpuritanical, and leaning towards hedonism. His ethics were world-enhancing, rather than world-denying and retreatist. He gave a naturalistic interpretation of the Biblical doctrine of original sin, describing original sin as the original state of torpor and sluggishness of every human being at the moment of birth. The purpose of the principle of population, and of the other difficulties encountered in life, is to stimulate man to raise himself out of this original state. Finally, Malthus' theology included the doctrine of annihilationism , according to which eternal life is not an essential part of the human soul at birth, but is granted only to those who attain during life on earth an adequate growth of mind. The others are, at death, not condemned to eternal suffering, but are annihilated, body and soul. (shrink)

The Road to Reality John M. Rist. 13 THE ORIGINALITY OF PLOTINUS ' It is necessary to take the notable opinions of the ancients and consider whether any of them agree with ours.' (Enneads 3.7.7.15) It will not have escaped the reader's  ...