The conjunction fallacy occurs whenever probability compounds are thought of as more likely than its component probabilities alone. In the experiment we present, subjects chose between simple and compound lotteries after some practice. Depending on the condition, they were given more or less information about the nature of probability compounds. The conjunction fallacy was surprisingly robust. There was, however, a puzzling dissociation between verbal and behavioral learning: verbal responses were sensitive, but actual choices entirely insensitive, to the amount of verbal (...) instructions being provided. This might reflect a dichotomy between implicit and explicit learning. Caution must be exercised in generalizing results from what people say to what people do. (shrink)

Hertwig and Ortmann (H&O) rightly criticize the usage of deception. However, stationary replication may often have no ecological validity. Many economic experiments are not interactive; when they are, there is not much specifically validating H&O's psychological views on script enactment. Incentives in specific market structures may scaffold even zero rational decision-making, but this says very little about individual psychology.

The beliefs, preferences, and constraints framework provides a language that economists, and possibly others, may largely share. However, it has got so many levels of indeterminacy that it is otherwise almost meaningless: when no evidence can ever be a problem for scientific construct Z, then there is a problem for Z, for nothing can also be considered supportive of Z. (Published Online April 27 2007).

“Economic man” assumes not only self-interest, but also rationality of choices. The finding that ultimatum game offers can be explained by ambiguity aversion as well as pessimism, plus other findings, suggests the usefulness of taking bounded rationality more into account. Neurodevelopmental and heritability research supports the authors' emphasis on the importance of social learning and socialization.

This work aims to clarify the nature of the philosophy of education, intending to indicate both the limits and the uses of philosophical criticism of educational aims and concepts. It is based upon the fact that education is a subject full of unexamined presumptions.

Stanovich & West's target article undervalues the power of implicit learning (particularly reinforcement learning). Implicit learning may allow the learning of more rational responses–and sometimes even generalisation of knowledge–in contexts where explicit, abstract knowledge proves only of limited value, such as for economic decision-making. Four other comments are made.

Whether or not trait affiliation correlates with human behaviour needs investigating. One should be careful generalizing neuropsychological mechanisms for affiliation, and generalizing an analysis based on one or two neuropsychological mechanisms and mostly studies on rodents, to complex human social interactions. Serotonin is an example of a neurotransmitter playing an important role in cooperation and interacting with the dopaminergic system.

This essay addresses a serious question in theistic bioethics—what those of faith ought to make of transhumanism. In it, I argue for two theses: (1) Humanity—having slain Pestilence, War, and Famine—will slay Death as well. (In other words, the transhumanists are descriptively right.) (2) It is not death that really torments us. (In other words, the transhumanists are normatively wrong.) In doing so, I’ll suggest a theological solution to the Fermi Paradox: maybe we have not encountered any other technological civilizations (...) because, while intelligent animals are fairly common in our galaxy, none of the others are driven by the restlessness that would drive us to sail the stars. In other words, maybe none of the others are fallen. (shrink)

The role of the facilitator within Communities of Philosophical Inquiry has often been allocated to structuring group interactions and/or affirming participants' contributions. In this paper, however, it will be argued that facilitators must take a far more active role in dialogue than has hereto been recognized. This is the case because, when left to its own devices, CPI dialogue often devolves into mere opinion tourism, becomes obscure, and/or is drowned by an excess of irrelevant content. It will be argued that (...) these effects, in turn, pose a serious threat to agent investment. That is, by muddying dialogue, these effects can sever the link between agents' motivational sets and the subject matter at hand and, consequently, may cause agents to internally disengage from the discussion underway. Given the danger that unchecked dialogue poses to agent investment, it will be argued that facilitators must be vigilant in attending to the health of the linguistic environment that both they themselves and participants occupy. That is, it will be argued that facilitators have a responsibility to care for participants by intervening in dialogue and pushing for rigour and clarity. This ecocentric model of care, interestingly, often directly contends with the more intuitive, or biocentric position, that a facilitator must directly care for participants affective or emotional welfare by celebrating their contributions for contribution's sake. Instead, it suggests that facilitators can indirectly care for participants by strategically prompting them to make their contributions logically sound, concise and clear. Moreover, this ecocentric perspective also conflicts with the often purported view that a facilitator is a temporary figure that should eventually become obsolete in a CPI. To the contrary, the ecocentric perspective suggests that a facilitator's role is indispensable to a CPI's success, insofar as it helps create and maintain the necessary conditions for agent investment, and helps ensure the continued health of the linguistic ecosystem, upon which everybody's welfare crucially depends. (shrink)

For many years, philosophers have argued about the Trolley Problem – but they've also argued about whether the problem ought to interest us. According to some, the artificiality of the situations means that they involve no complicating factors – and so we ought to take our intuitions about them especially seriously. According to others, though, the artificiality of the situations means that our intuitions about them are meaningless. I hereby name the puzzle of why our intuitions about this differ the (...) ‘Trolley Meta-Problem’. The story that follows illustrates this problem – and the Trolley Problem itself – in a humorous way. (shrink)

Rachlin rightly highlights behavioural reinforcement, conditional cooperation, and framing. However, genes may explain part of the variance in altruistic behaviour. Framing cannot be used to support his theory of altruism. Reinforcement of acts is not identical to reinforcement of patterns of acts. Further, many patterns of acts could be reinforced, and Rachlin's altruism is not the most likely candidate.

Self-experimentation is uncommon in the decision sciences, but mental experiments are common; for example, intuition and introspection are often used by theoretical economists as justifications for their models. While introspection can be useful for the generation of ideas, it can also be overused and become a comfortable illusion for the theorist and an obstacle for science.

My dissertation has two main aims. The first is to show how some of the central parts of Bernard Williams' conception of ethics fit together. The second is to criticize and develop Williams' thought and, by doing so, to illustrate why it offers such an important and fruitful starting point for contemporary moral philosophy. ;Much of the importance of Williams' work stems from his rich and ambivalent engagement with moral skepticism. His work forcefully engages both with philosophical and wider cultural (...) concerns about the 'status' and authority of moral values and with questions over how to understand and sustain the deliberative priority traditionally accorded to moral concerns. His conception of reasons for action, which I consider in Chapter One, threatens the appealing view that moral judgements always give reasons for action to those to whom they apply. His exploration of what it is to have a deep commitment to a person or project suggests, as I explain in Chapter Two, that moral obligations do not necessarily have priority over other concerns. His doubts about moral objectivity, which I explore in Chapter Three and Chapter Four, lead him to a deeply problematic conception of the relationship between ethical reflection and ethical practice. ;All of these views of Williams' incorporate varying degrees of skepticism. But Williams does not aim to be an outright moral skeptic. Indeed, I reveal how his work can be read as containing a response to outright skepticism: what he shows is that ethics need neither be as exacting nor as saddled with metaphysical ambition as the skeptic thinks. However, the elements of Williams' work that tell against outright skepticism, I argue, give one reason to go further and to be less skeptical about morality than he is. (shrink)

Available in paperback for the first time, this landmark volume examines the course of Western philosophy over the past 2,500 years. A Critical History of Western Philosophy focuses on the most significant thinkers and philosophical movements while emphasizing key ideas of permanent interest and relevance. Arranged chronologically from early Greece to the twentieth century, this comprehensive work includes expert histories of all major figures from Socrates and Plato to G.E. Moore and Bertrand Russell, and of every important school from the (...) Epicureans to the Existentialists. (shrink)

This essay offers a critique of the nonfoundational theoretical framework which undergirds a number of approaches to contemporary missiology. In its place, it proposes a particularist approach to the study of Christian mission. On this approach, we do not try to glue our missiological reflection on the top of a theory such as Thomas Kuhn’s paradigm shifts. On the contrary, this epistemological orientation requires us to begin with what we think we already know about both (a) the context and (b) (...) the gospel before (c) evaluating how all that knowledge fits together. (shrink)

We describe a first experiment on whether product complexity affects competition and consumers in retail markets. We are unable to detect a significant effect of product complexity on prices, except insofar as the demand elasticity for complex products is higher. However, there is qualified evidence that complex products have the potential to induce consumers to buy more than they would otherwise. In this sense, consumer exploitability in quantities cannot be ruled out. We also find evidence for shaping effects: consumers’ preferences (...) are shaped by past experience with prices, and firms may in principle exploit this to sell more. (shrink)

As a stress test of experimenter demand effects, we run an experiment where subjects can physically destroy coupons awarded to them. About one subject out of three does. Giving money back to the experimenter is possible in a separate task but is more consistent with an experimenter demand effect than an explanation based on altruism towards the experimenter. A measure of sensitivity to social pressure helps predict destruction when social information is provided.

As a result of recent legislative developments and greater ease of accessibility, the Human Resources Manager (HRM) faces the challenge of not only maintaining records but also that of protecting employees from misuse of personal information contained in their individual personnel files. The widespread use of computers for maintaining employee records has resulted in new ethical dimensions and/or challenges for the HRM. Serious questions regarding accessibility to and dissemination of such personal information now confront the HRM. Unless policies are developed (...) by organizations for dealing with such questions, eventually government will mandate such policies in order to protect employee rights. (shrink)

We report the results of an experiment on how individual risk taking clusters together when subjects are informed of peers’ previous risk taking decisions. Subjects are asked how much of their endowment they wish to allocate in a lottery in which there is a 50% chance the amount they invest will be tripled and a 50% chance their investment will be lost. We use a 2 × 2 factorial design varying: (i) whether the subjects initially observed high or low investment (...) social anchors, (ii) whether information about the investment decisions of other subjects in their social group is provided. We find strong evidence that individuals' risk taking decisions are malleable to that of their peers, which in turn leads to social clustering of risk taking. Social anchors shape initial risk taking, with mean investment then converging to a high level across treatments. (shrink)

We consider the notions of static and dynamic reasonableness of requests by an authority in a trust game experiment. The authority, modeled as the experimenter, systematically varies the experimental norm of what is expected from trustees to return to trustors, both in terms of the level of each request and in terms of the sequence of the requests. Static reasonableness matters in a self-biased way, in the sense that low requests justify returning less, but high requests tend to be ignored. (...) Dynamic reasonableness also matters, in the sense that, if requests keep increasing, trustees return less compared to the same requests presented in random or decreasing order. Requests never systematically increase trustworthiness but may decrease it. (shrink)

Many important regulatory decisions are taken by professionals employing limited and conflicting evidence. We conduct an experiment in a merger regulation setting, identifying the role of different standards of proof, volumes of evidence, cost of error and professional or lay decision making. The experiment was conducted on current practitioners from 11 different jurisdictions, in addition to student subjects. Legal standards of proof significantly affect decisions. There are specific differences because of professional judgment, including in how error costs and volume of (...) evidence are taken into account. We narrow the range of explanations for why professional decision making matters. (shrink)

This article examines, experimentally, whether inequality affects the social capital of trust in non-market and market settings. We consider three experimental treatments, one with equality, one with inequality but no knowledge of the income of other agents, and one with inequality and knowledge. Inequality, particularly when it is known, has a corrosive effect on trusting behaviours in this experiment. Agents appear to be less sensitive to known relative income differentials in markets than they are in the non-market settings, but trust (...) in markets appears generally more vulnerable to the introduction of inequality than in the non-market setting. (shrink)

As is well known, Aristotelian natural philosophy, and many other systems of natural philosophy since, have relied heavily on teleology and teleological causation. Somehow, the purpose or end of an obj ect can be used to predict and explain what that object does: once you know that the end of an acorn is to become an oak, and a few things about what sorts of circumstances are conducive to the attainment of this end, you can predict a lot about the (...) sprouting of the acorn and the subsequent behaviour of the piece of vegetation that results. Once you know that a rock seeks to move towards the centre of the Earth, you gain some insight into why it falls when released, and why it deforms the carpet or foot that it lands on. Once you know that the rabbit seeks to preserve itself, you can predict it will run from the fox. And so on. There are at least three features of Aristotle’s teleology, and more generally of an Aristotelian frame of mind about teleology, that may induce suspicion. One is that an end can serve as a "cause": as well as the sort of causation we all recognize, efficient causation, there are other forms, one of which is teleological causation. However, this can look less odd if we think of causes as things that figure in "because" answers to "why" questions. Whether or not self-preservation, or the rabbit’s continued existence, or something similar, causes the rabbit to run, the reply "because it seeks to continue in existence" certainly makes sense as an answer, or part of an answer, to a question about why it ran from the fox. (At present we are only. (shrink)

Conceptualism is the thesis that, for any perceptual experience E, (i) E has a Fregean proposition as its content and (ii) a subject of E must possess a concept for each item represented by E. We advance a framework within which conceptualism may be defended against its most serious objections (e.g., Richard Heck's argument from nonveridical experience). The framework is of independent interest for the philosophy of mind and epistemology given its implications for debates regarding transparency, relationalism and representationalism, demonstrative (...) thought, phenomenal character, and the speckled hen objection to modest foundationalism. (shrink)

In an experiment on markets for services, we find that consumers are likely to stick to default tariffs and achieve suboptimal outcomes. We find that inattention to the task of choosing a better tariff is likely to be a substantial problem in addition to any task and tariff complexity effect. The institutional setup on which we primarily model our experiment is the UK electricity and gas markets, and our conclusion is that the new measures by the UK regulator Ofgem to (...) improve consumer outcomes are likely to be of limited impact. (shrink)

This is a formal and systematic study of the logical foundations of speech act theory. The study of speech acts has been a flourishing branch of the philosophy of language and linguistics over the last two decades, and John Searle has of course himself made some of the most notable contributions to that study in the sequence of books Speech Acts, Expression and Meaning and Intentionality. In collaboration with Daniel Vanderveken he now presents the first formalised logic of a (...) general theory of speech acts, dealing with such things as the nature of an illocutionary force, the logical form of its components, and the conditions of success of elementary illocutionary acts. The central chapters present a systematic exposition of the axioms and general laws of illocutionary logic. (shrink)

We propose a triple test to evaluate the usefulness of behavioral economics models for public health policy. Test 1 is whether the model provides reasonably new insights. Test 2 is on whether these have been properly applied to policy settings. Test 3 is whether they are corroborated by evidence. We exemplify by considering the cases of social interactions models, self-control models and, in relation to health message framing, prospect theory. Out of these sets of models, only a correctly applied prospect (...) theory fully passes the tests at present. Specifically, in broad agreement with the evidence, a gain frame has positive implications for welfare encourages disease prevention activity, though this does not apply if the perceived probability of the bad health outcome is large enough. We see our tests as being useful to identify how much health policy weight policy makers should assign to specific behavioral economic models; they are also useful to verify what next steps would be most useful in further research. (shrink)

A person is said to be ‘trust responsive’ if she fulfils trust because she believes the truster trusts her. The experiment we report was designed to test for trust responsiveness and its robustness across payoff structures, and to discriminate it from other possible factors making for trustworthiness, including perceived kindness, perceived need and inequality aversion. We elicit the truster’s confidence that the trustee will fulfil, and the trustee’s belief about the truster’s confidence after the trustee receives evidence relevant to this. (...) We find evidence of strong trust responsiveness. We also find that perceptions of kindness and of need increase trust responsiveness, and that they do so only in conjunction with trust responsiveness. (shrink)

In current American medical practice, autonomy is assumed to be more valuable than human life: if a patient autonomously refuses lifesaving treatment, the doctors are supposed to let him die. In this paper we discuss two values that might be at stake in such clinical contexts. Usually, we hear only of autonomy and best interests. However, here, autonomy is ambiguous between two concepts—concepts that are tied to different values and to different philosophical traditions. In some cases, the two values (that (...) of agency and that of authenticity) entail different outcomes. We argue that the comparative value of these values needs to be assessed. (shrink)

Compatibilist libertarianism claims that alternate possibilities for action at the agential level are consistent with determinism at the physical level. Unlike traditional compatibilism about alternate possibilities, involving conditional or dispositional accounts of the ability to act, compatibilist libertarianism offers us unqualified modalities at the agential level, consistent with physical determinism, a potentially big advance. However, I argue that the account runs up against two problems. Firstly, the way in which the agential modalities are generated talks past the worries of the (...) incompatibilist in the traditional free will problem. As such, it fails to dispel the worries that determinism generates for the incompatibilist. Secondly, in spite of the ingenious use of the supervenience thesis and multiple realizability, the position still allows us to generate the old worry that determinism at the physical level would mean no alternate possibilities at the level of agency. In particular, I develop a new example, the ‘atomic slit case’ that demonstrates how physical level information is salient to what is possible at the agential level, motivating incompatibilism. (shrink)

Ed. Daniel Greenberger, 750pp May 1995 164.95.

This article examines, experimentally, whether inequality affects the social capital of trust in non-market and market settings. We consider three experimental treatments, one with equality, one with inequality but no knowledge of the income of other agents, and one with inequality and knowledge. Inequality, particularly when it is known, has a corrosive effect on trusting behaviours in this experiment. Agents appear to be less sensitive to known relative income differentials in markets than they are in the non-market settings, but trust (...) in markets appears generally more vulnerable to the introduction of inequality than in the non-market setting. (shrink)

This article connects the previously isolated literatures on corporate citizenship and corporate political activity to explain how firms construct political influence in the public sphere. The public engagement of firms as political actors is explored empirically through a discursive analysis of a public debate between the mining industry and the Australian government over a proposed tax. The findings show how the mining industry acted as a corporate citizen concerned about the common good. This, in turn, legitimized corporate political activity, which (...) undermined deliberation about the common good. The findings explain how the public sphere is refeudalized through corporate manipulation of deliberative processes via what we term corporate citizenspeak—simultaneously speaking as corporate citizens and for individual citizens. Corporate citizenspeak illustrates the duplicitous engagement of firms as political actors, claiming political legitimacy while subverting deliberative norms. This contributes to the theoretical development of corporations as political actors by explaining how corporate interests are aggregated to represent the common good and how corporate political activity is employed to dominate the public sphere. This has important implications for understanding how corporations undermine democratic principles. (shrink)

It is tempting to posit an intimate relationship between belief and assertion. The speech act of assertion seems like a way of transferring the speaker’s belief to his or her audience. If this is right, then you might think that the evidential warrant required for asserting a proposition is just the same as the warrant for believing it. We call this thesis entitlement equality. We argue here that entitlement equality is false, because our everyday notion of belief is unambiguously a (...) weak one. Believing something is true, we argue, is compatible with having relatively little confidence in it. Asserting something requires something closer to complete confidence. Specifically, we argue that believing a proposition merely requires thinking it likely, but that thinking that a proposition is likely does not entitle one to assert it. This conclusion conflict with a standard view that ‘full belief’ is the central commonsense non-factive attitude. (shrink)

We have synthesized a 582,970-base pair Mycoplasma genitalium genome. This synthetic genome, named M. genitalium JCVI-1.0, contains all the genes of wild-type M. genitalium G37 except MG408, which was disrupted by an antibiotic marker to block pathogenicity and to allow for selection. To identify the genome as synthetic, we inserted "watermarks" at intergenic sites known to tolerate transposon insertions. Overlapping "cassettes" of 5 to 7 kilobases (kb), assembled from chemically synthesized oligonucleotides, were joined by in vitro recombination to produce intermediate (...) assemblies of approximately 24 kb, 72 kb ("1/8 genome"), and 144 kb ("1/4 genome"), which were all cloned as bacterial artificial chromosomes in Escherichia coli. Most of these intermediate clones were sequenced, and clones of all four 1/4 genomes with the correct sequence were identified. The complete synthetic genome was assembled by transformation-associated recombination cloning in the yeast Saccharomyces cerevisiae, then isolated and sequenced. A clone with the correct sequence was identified. The methods described here will be generally useful for constructing large DNA molecules from chemically synthesized pieces and also from combinations of natural and synthetic DNA segments. 10.1126/science.1151721. (shrink)