Diverse micro‐organisms populate a global deep biosphere hosted by rocks and sediments beneath land and sea, containing more biomass than any other biome except forests. This paper reviews an emerging palaeobiological archive of these dark habitats: microfossils preserved in ancient pores and fractures in the crust. This archive, seemingly dominated by mineralized filaments (although rods and coccoids are also reported), is presently far too sparsely sampled and poorly understood to reveal trends in the abundance, distribution, or diversity of deep life (...) through time. New research is called for to establish the nature and extent of the fossil record of Earth's deep biosphere by combining systematic exploration, rigorous microanalysis, and experimental studies of both microbial preservation and the formation of abiotic pseudofossils within the crust. It is concluded that the fossil record of Earth's largest microbial habitat may still have much to tell us about the history of life, the evolution of biogeochemical cycles, and the search for life on Mars. (shrink)

The identity theory’s rise to prominence in analytic philosophy of mind during the late 1950s and early 1960s is widely seen as a watershed in the development of physicalism, in the sense that whereas logical behaviourism proposed analytic and a priori ascertainable identities between the meanings of mental and physical-behavioural concepts, the identity theory proposed synthetic and a posteriori knowable identities between mental and physical properties. While this watershed does exist, the standard account of it is misleading, as it is (...) founded in erroneous intensional misreadings of the logical positivists’—especially Carnap’s—extensional notions of translation and meaning, as well as misinterpretations of the positivists’ shift from the strong thesis of translation-physicalism to the weaker and more liberal notion of reduction-physicalism that occurred in the Unity of Science programme. After setting the historical record straight, the essay traces the first truly modern identity theory to Schlick’s pre-positivist views circa 1920 and goes on to explore its further development in Feigl, arguing that the fundamental difference between the Schlick-Feigl identity theory and the more familiar and influential Place-Smart-Armstrong identity theory has resurfaced in the deep and seemingly unbridgeable gulf in contemporary philosophy of consciousness between inflationary mentalism and deflationary physicalism. (shrink)

According to Russellianism (or Millianism), the two sentences ‘Ralph believes George Eliot is a novelist’ and ‘Ralph believes Mary Ann Evans is a novelist’ cannot diverge in truth-value, since they express the same proposition. The problem for the Russellian (or Millian) is that a puzzle of Kaplan’s seems to show that they can diverge in truth-value and that therefore, since the Russellian holds that they express the same proposition, the Russellian view is contradictory. I argue that the standard Russellian appeal (...) to “ways of thinking” or “propositional guises” is not necessary to solve the puzzle. Rather than this retrograde concession to Fregeanism, appeal should be made to second-order belief. The puzzle is solved, and the contradiction avoided, by maintaining that both sentences are indeed true in addition to the sentence ‘Ralph (mistakenly) believes that he does not believe Mary Ann Evans/George Eliot is a novelist’. (shrink)

Public reason liberals claim that legitimate rules must be justifiable to diverse perspectives. This Public Justification Principle threatens that failing to justify rules to reprehensible agents makes those rules illegitimate. Although public reason liberals have replies to this objection, they cannot avoid the challenge of powerful deceivers. Powerful deceivers trick people who are purportedly owed public justification into considering otherwise good rules to be unjustified. Avoiding this challenge requires discounting some failures of justification, according to what caused people’s beliefs. I (...) offer a conception of public justification that accommodates these externalist considerations while positioning Public Reason Liberalism to provide insight into real cases of deception. (shrink)

Propositionalism is the view that intentional attitudes, such as belief, are relations to propositions. Propositionalists argue that propositionalism follows from the intuitive validity of certain kinds of inferences involving attitude reports. Jubien (2001) argues powerfully against propositions and sketches some interesting positive proposals, based on Russell’s multiple relation theory of judgment, about how to accommodate “propositional phenomena” without appeal to propositions. This paper argues that none of Jubien’s proposals succeeds in accommodating an important range of propositional phenomena, such as the (...) aforementioned validity of attitude-report inferences. It then shows that the notion of a predication act-type, which remains importantly Russellian in spirit, is sufficient to explain the range of propositional phenomena in question, in particular the validity of attitude-report inferences. The paper concludes with a discussion of whether predication act-types are really just propositions by another name. (shrink)

The Public Justification Principle requires that coercive institutions be justified to all who live under them. I argue that this principle often cannot be satisfied without persons depending on the pure informative testimony of others, even under realistically idealized situations. Two main results follow. First, the sense of justification relevant to this principle has a strongly externalist component. Second, normative expectations of trust are essential to public justification. On the view I propose, whether the Public Justification Principle is satisfied depends (...) on the features of the network of testifiers in which persons are embedded. I consider several such networks to show which features are plausibly relevant. The importance of testimony for public justification ultimately suggests that we should moderate our expectations about the kind of conciliation we can achieve with the social order in which we live. (shrink)

Quine introduced a famous distinction between the ‘notional’ sense and the ‘relational’ sense of certain attitude verbs. The distinction is both intuitive and sound but is often conflated with another distinction Quine draws between ‘dyadic’ and ‘triadic’ (or higher degree) attitudes. I argue that this conflation is largely responsible for the mistaken view that Quine’s account of attitudes is undermined by the problem of the ‘exportation’ of singular terms within attitude contexts. Quine’s system is also supposed to suffer from the (...) problem of ‘suspended judgement with continued belief’. I argue that this criticism fails to take account of a crucial presupposition of Quine’s about the connection between thought and language. The aim of the paper is to defend the spirit of Quine’s account of attitudes by offering solutions to these two problems. (shrink)

The Pneumatist school of medicine has the distinction of being the only medical school in antiquity named for a belief in a part of a human being. Unlike the Herophileans or the Asclepiadeans, their name does not pick out the founder of the school. Unlike the Dogmatists, Empiricists, or Methodists, their name does not pick out a specific approach to medicine. Instead, the name picks out a belief: the fact that pneuma is of paramount importance, both for explaining health and (...) disease, and for determining treatments for the healthy and sick. In this paper, we re-examine what our sources say about the pneuma of the Pneumatists in order to understand what these physicians thought it was and how it shaped their views on physiology, diagnosis and treatment. (shrink)

Athenaeus of Attalia distinguishes two types of exercise or training (γυμνασία) that are required at each stage of life: training of the body and training of the soul. He says that training of the body includes activities like physical exercises, eating, drinking, bathing and sleep. Training of the soul, on the other hand, consists of thinking, education, and emotional regulation (in other words, 'philosophy'). The notion of 'training of the soul' and the contrast between 'bodily' and 'psychic' exercise is common (...) in the Academic and Stoic traditions Athenaeus is drawing from; however, he is the earliest extant medical author to distinguish these kinds of training and to treat them as equally important aspects of regimen. In this paper, I propose some reasons why he found this distinction useful, and I examine how he justified incorporating it into his writings on regimen, namely by attributing Plato's beliefs about regimen to Hippocrates, a strategy Galen would adopt well over a century later. (shrink)

Bhaskar's "Spiritual turn" : logical and conceptual problems -- Meta-reality, critical realism, and Marxism -- Secularism, agnosticism, and theism -- Critical realism, transcendence, and God -- Humanism, spiritualism, and critical theory.

Prominent defenders of the Enlightenment, like Jürgen Habermas, are beginning to recognize that the characterization of human beings in entirely rational and secular terms leaves out something important. Religion, they admit, plays an important role in human existence. But the return to a traditional monotheistic religion seems sociologically difficult after the death of God. We argue that Homeric polytheism retains a phenomenologically rich account of the sacred, and a similarly rich understanding of human existence in its midst. By opening ourselves (...) up to the moods of wonder and gratitude at the root of Homer's sense of the sacred, we can re-appropriate a polytheistic understanding of the sacred that allows us to recover and revive the intensity and meaningfulness that Homer's polytheists enjoyed. (shrink)

The received view in the history of the philosophy of psychology is that the logical positivists—Carnap and Hempel in particular—endorsed the position commonly known as “logical” or “analytical” behaviourism, according to which the relations between psychological statements and the physical-behavioural statements intended to give their meaning are analytic and knowable a priori. This chapter argues that this is sheer legend: most, if not all, such relations were viewed by the logical positivists as synthetic and knowable only a posteriori. It then (...) traces the origins of the legend to the logical positivists’ idiosyncratic extensional or at best weakly intensional use of what are now considered crucially strongly intensional semantic notions, such as “translation,” “meaning” and their cognates, focussing on a particular instance of this latter phenomenon, arguing that a conflation of explicit definition and analyticity may be the chief source of the legend. (shrink)

We develop the theory of layered posets and use the notion of layering to prove a new iteration theorem is κ-cc, as long as direct limits are used sufficiently often. This iteration theorem simplifies and generalizes the various chain condition arguments for universal Kunen iterations in the literature on saturated ideals, especially in situations where finite support iterations are not possible. We also provide two applications:1 For any n≥1, a wide variety of <ωn−1-closed, ωn+1-cc posets of size ωn+1 can consistently (...) be absorbed by quotients of saturated ideals on ωn.2 For any n∈ω, the tree property at ωn+3 is consistent with Chang’s conjecture ↠. (shrink)

This paper is about the history of a question in ancient Greek philosophy and medicine: what holds the parts of a whole together? The idea that there is a single cause responsible for cohesion is usually associated with the Stoics. They refer to it as the synectic cause (αἴτιον συνεκτικόν), a term variously translated as ‘cohesive cause,’ ‘containing cause’ or ‘sustaining cause.’ The Stoics, however, are neither the first nor the only thinkers to raise this question or to propose a (...) single answer. Many earlier thinkers offer their own candidates for what actively binds parts together, with differing implications not only for why we are wholes rather than heaps, but also why our bodies inevitably become diseased and fall apart. This paper assembles, up to the time of the Stoics, one part of the history of such a cause: what is called ‘the synechon’ (τὸ συνέχον) – that which holds things together. Starting with our earliest evidence from Anaximenes (sixth century BCE), the paper looks at different candidates and especially the models and metaphors for thinking about causes of cohesion which were proposed by different philosophers and doctors including Empedocles, early Greek doctors, Diogenes of Apollonia, Plato and Aristotle. My goal is to explore why these candidates and models were proposed and how later philosophical objections to them led to changes in how causes of cohesion were understood. (shrink)

The paper presents a new theory of perceptual demonstrative thought, the property-dependent theory. It argues that the theory is superior to both the object-dependent theory (Evans, McDowell) and the object-independent theory (Burge).

We prove a variety of theorems about stationary set reflection and concepts related to internal approachability. We prove that an implication of Fuchino–Usuba relating stationary reflection to a version of Strong Chang’s Conjecture cannot be reversed; strengthen and simplify some results of Krueger about forcing axioms and approachability; and prove that some other related results of Krueger are sharp. We also adapt some ideas of Woodin to simplify and unify many arguments in the literature involving preservation of forcing axioms.

Given an ideal $I$ , let $\mathbb{P}_{I}$ denote the forcing with $I$ -positive sets. We consider models of forcing axioms $MA(\Gamma)$ which also have a normal ideal $I$ with completeness $\omega_{2}$ such that $\mathbb{P}_{I}\in \Gamma$ . Using a bit more than a superhuge cardinal, we produce a model of PFA (proper forcing axiom) which has many ideals on $\omega_{2}$ whose associated forcings are proper; a similar phenomenon is also observed in the standard model of $MA^{+\omega_{1}}(\sigma\mbox{-closed})$ obtained from a supercompact cardinal. (...) Our model of PFA also exhibits weaker versions of ideal properties, which were shown by Foreman and Magidor to be inconsistent with PFA. Along the way, we also show (1) the diagonal reflection principle for internally club sets ( $\mathit{DRP}(IC_{\omega_{1}})$ ) introduced by the author in earlier work is equivalent to a natural weakening of “there is an ideal $I$ such that $\mathbb{P}_{I}$ is proper”; and (2) for many natural classes $\Gamma$ of posets, $MA^{+\omega_{1}}(\Gamma)$ is equivalent to an apparently stronger version which we call $MA^{+\operatorname{Diag}}(\Gamma)$. (shrink)

Commonsense psychological explanation of action upon objects seems to require not only reference to agents’ demonstrative beliefs about the objects acted upon but also the de re ascription of these demonstrative beliefs. There is an influential objection, however, to the de re component: since de re ascriptions permit the attribution to agents of inconsistent attitudes about the objects acted upon, they cannot explain (or predict) agents’ actions upon those objects. This paper answers the objection by presenting a contextualist theory of (...) de re action explanation according to which agents’ beliefs about objects are logically fragmented. (shrink)

The article discusses the characteristics of virtuous persons in relation to their social role(s). It explores the key features of the neo-Aristotelian account of right action and some problems for this account in the context of a certain social role. The problem can be characterized as a dilemma. When evaluating an action in some role, one view is that the obligations and requirements of roles could be taken as something already given by social or professional role descriptions, such that the (...) virtuous person must respond to these demands in the right way. Alternatively, the virtuous person could evaluate the role itself in terms of what the “good parent, teacher, doctor” and so on should be like. Using two different neo-Aristotelian approaches to the ethics of professional roles as examples I argue that neither strategy is, as it stands, satisfactory. ‘Internalism’ about role demands takes institutionally specified role requirements in a way that is too strongly determinate for a virtue ethical analysis. On the other side, ‘externalism’ is all too indeterminate in bypassing or failing to accommodate the institutionally determined demands of social or professional roles. These shortcomings contour an “institution shaped gap” in virtue ethics such that it needs to attend to the qualities of social institutions as well as the character and actions of individuals. In response I suggest that there is a distinctly Aristotelian way in which the virtue ethicist can address it, by appeal to the distinctive function or “characteristic activity”— ergon—of the institution. (shrink)

Collective procedural memory is a group’s memory of how to do things, as opposed to a group’s memory of facts. It enables groups to mount effective responses to periodic events (e.g., natural hazards) and to sustain collective projects (e.g., combatting climate change). This article presents an account of collective procedural memory called the Ability Conception. The Ability Conception has various advantages over other accounts of collective procedural memory, such as those appealing to collective know-how and collective identity. It also demonstrates (...) new applications for collective procedural memory. I develop three in this article: to social epistemology, to the ethics of memorialization, and to a pattern of group vulnerability to recurring hazardous events that I call the saeculum effect. (shrink)

It is well known that saturation of ideals is closely related to the “antichain-catching” phenomenon from Foreman–Magidor–Shelah [10]. We consider several antichain-catching properties that are weaker than saturation, and prove:If${\cal I}$is a normal ideal on$\omega _2 $which satisfiesstationary antichain catching, then there is an inner model with a Woodin cardinal;For any$n \in \omega $, it is consistent relative to large cardinals that there is a normal ideal${\cal I}$on$\omega _n $which satisfiesprojective antichain catching, yet${\cal I}$is not saturated. This provides a negative (...) answer to Open Question number 13 from Foreman’s chapter in the Handbook of Set Theory. (shrink)

The question of ontological commitment in Plato’s Hippias Major has been important in disputes over the dialogue’s place in the corpus, its meaning, and its authenticity. But this question seems to have been settled—the Hippias Major is not committed to the ‘forms.’ Such an ontological conclusion has been vigorously defended, but its defenses rest on a problematic meta-ontological framework. This paper suggests a more adequate framework and brings more evidence to the evaluation of the question of ontological commitment in the (...) Hippias Major. It concludes that the dialogue is indeed committed to some kind of form. (shrink)

Two epistemic principles are Knowledge Exclusion and Belief Exclusion. Knowledge Exclusion says that it is necessarily the case that if an agent knows that p, then she does not believe that ∼p, and Belief Exclusion says that it is necessarily the case that if an agent believes that q, then she does not believe that ∼q. Many epistemologists find it reasonable to reject the latter principle and accept the former. I argue that this is in fact not reasonable by proposing (...) a case in which an agent can use that she has contradictory beliefs towards a proposition as decisive evidence for that proposition. A natural response is that this case conflicts with common assumptions about the relation between knowledge, contradictory beliefs and rationality. I reply by drawing ideas from Lasonen-Aarnio’s remarks on unreasonable knowledge to explain why these common assumptions do not threaten my argument. (shrink)

This paper is about the actual and potential development of an ethics that is appropriate to the practices and institutions of biobanking, the question being how best to develop a framework within which the relevant ethical questions are first identified and then addressed in the right ways. It begins with ways in which a standard approach in bioethics – namely upholding a principle of individual autonomy via the practice of gaining donors’ informed consent – is an inadequate ethical framework for (...) biobanking. In donating material to a biobank, the individual donor relinquishes a degree of control and knowledge over the way their material is used in large-scale and typically open ended projects; and the identifying nature of genetic material means that third parties have rights and interests which must be taken into account as well as those of the individual donor. After discussing the problems for informed consent in the biobanking context, the paper then considers three emerging alternative approaches which, broadly speaking, conceptualize the subject of biobanking ethics in communal or co-operative terms: one version sees participants in biobanking research as ‘shareholders’ whilst the other expands on the notion of participation to include the wider public beneficiaries of biobanking as ‘stakeholders’. It concludes by outlining a third view, on which the biobanking institution itself is conceived as an ethical subject whose defining function can do useful normative work in guiding and evaluating its activities. (shrink)

This article examines whether vision in Plato’s Timaeus can realize its primary function of permitting humans to stabilize their misaligned orbits of intelligence by getting to know the universe’s orbits as revealed through the heavenly bodies’ movements. I consider a concern that Timaeus, while seemingly requiring nocturnal vision for this purpose, appears to preclude its possibility, thereby threatening the dialogue’s internal coherence. I then argue that Timaeus has the resources to overcome this worry and to provide a philosophically cogent account (...) of nocturnal vision. (shrink)

The theory of object-dependent singular thought is outlined and the central motivation for it, turning on the connection between thought content and truth conditions, is discussed. Some of its consequences for the epistemology of thought are noted and connections are drawn to the general doctrine of externalism about thought content. Some of the main criticisms of the object-dependent view of singular thought are outlined. Rival conceptions of singular thought are also sketched and their problems noted.

The theory of object-dependent singular thought is outlined and the central motivation for it, turning on the connection between thought content and truth conditions, is discussed. Some of its consequences for the epistemology of thought are noted and connections are drawn to the general doctrine of externalism about thought content. Some of the main criticisms of the object-dependent view of singular thought are outlined. Rival conceptions of singular thought are also sketched and their problems noted.

Burke proved that the generalized nonstationary ideal, denoted by NS, is universal in the following sense: every normal ideal, and every tower of normal ideals of inaccessible height, is a canonical Rudin‐Keisler projection of the restriction of NS to some stationary set. We investigate how far Burke's theorem can be pushed, by analyzing the universality properties of NS with respect to the wider class of ‐systems of filters introduced by Audrito and Steila. First we answer a question of Audrito and (...) Steila, by proving that ‐systems of filters do not capture all kinds of set‐generic embeddings. We provide a characterization of supercompactness in terms of short extenders and canonical projections of NS, without any reference to the strength of the extenders; as a corollary, NS can consistently fail to canonically project to arbitrarily strong short extenders. We prove that ω‐cofinal towers of normal ultrafilters, e.g., the kind used to characterize I2 and I3 embeddings, are well‐founded if and only if they are canonical projections of NS. Finally, we provide a characterization of “ is Jónsson” in terms of canonical projections of NS. (shrink)

The modern lawyer operates within a conception of law as a body of rules. To confront the law of contract, of torts, or of property, is to familiarize oneself with an intricate set of rules. Such familiarity is not yet legal scholarship, much less legal practice. For in order to use the rules as lawyers use them, the rules must be contemplated and considered, and the relationship between the different rules must be understood. Because the intellectual processes involved in handling (...) the rules exhibit a high degree of sophistication, those intellectual processes may themselves become the subject matter of philosophical argument. Thus we may regard jurisprudential theories as embodying differing understandings of the processes of handling legal rules; and we may conceive of legal theory as the attempt to grasp the moral significance of rules as a foundation for social order. This essay shall offer some thoughts on the relationship between the rule of law, considered as a moral ideal, and the notion of rules as the principal means by which legal order is manifested. (shrink)

In Making it Explicit Robert Brandom claims that perspectivally hybrid de re attitude ascriptions explain what an agent actually did, from the point of view of the ascriber, whether or not that was what the agent intended to do. There is a well-known problem, however, first brought to attention by Quine, but curiously ignored by Brandom, that threatens to undermine the role of de re ascriptions in the explanation of action, a problem that stems directly from the fact that, unlike (...) de dicto ascriptions, they permit the attribution of inconsistent attitudes to agents. I propose a solution to the problem which I believe is consistent with Brandom’s approach to the nature of intentionality and the explanation of action. (shrink)

This paper argues for an account of the relation between thought ascription and the explanation of action according to which de re ascriptions and de dicto ascriptions of thought each form the basis for two different kinds of action explanations, nonrationalizing and rationalizing ones. The claim that de dicto ascriptions explain action is familiar and virtually beyond dispute; the claim that that de re ascriptions are explanatory of action, however, is not at all familiar and indeed has mostly been denied (...) by philosophers. I explain how de re ascriptions enter into non-rationalizing explanations of action and how attention to their distinctive explanatory nature reveals flaws in an alternative “dual-component” view about action explanation. (shrink)

A number of traditional roles that propositions are supposed to play are outlined. Philosophical theories of the nature of propositions are then surveyed, together with considerations for and against, with an eye on the question whether any single notion of a proposition is suited to play all or any of these roles. Approaches discussed include: (1) the structureless possible-worlds theory; (2) the structured Russellian theory; and (3) the structured Fregean theory. It is noted that it is often unclear whether these (...) are accounts of what propositions are, ontologically speaking, or whether they are accounts of how propositions are best represented in a formal semantic theory. (shrink)

1. Although there has been renewed interest in Anne Conway’s (1631–1679) sole published philosophical treatise, The Principles of the Most Ancient and Modern Philosophy, scholars have so far largel...

Scholarship on Aristotle’s theory of visual perception has traditionally held that Aristotle had a single, static, conception of light and that he believed that illumination occurred prior to and independent of the actions of colours. I contend that this view precludes the medium from becoming actually transparent, thus making vision impossible. I here offer an alternative to the traditional interpretation, using contemporary conceptual tools to make good philosophical sense of Aristotle’s position. I call my view the ‘ecological’ interpretation. It postulates (...) two conceptions of light: non-visible mobile propagated light and visible static illumination produced by the interaction of propagated light with the environment’s coloured textured surfaces. I argue that these contemporary conceptual tools can find a foothold in and consistently enrich Aristotle’s extant position and that, with their aid, we can restore coherence to his theories of light and vision. (shrink)

This paper argues that a certain way of thinking about the function of the biobank—about what it does and is constructed for as a social institution aimed at ‘some good’—can and should play a substantial role in an effective biobanking ethic. It first exemplifies an ‘institution shaped gap’ in the current field of biobanking ethics. Next the biobank is conceptualized as a social institution that is apt for a certain kind of purposive functional definition such that we know it by (...) what it does and what it is designed to do. This purpose is then characterized further as essentially incorporating the human goods the institution is designed to serve, such that it plays a useful and indispensible role in how it should operate, i.e. in the ethics and governance of biobanking. Finally the ethical scope and limitations of such a theory is clarified by a discussion of some theoretical objections and suggested practical examples of its application. (shrink)

This paper argues that Twin Earth twins belong to the same psychological natural kind, but that the reason for this is not that the causal powers of mental states supervene on local neural structure. Fodor’s argument for this latter thesis is criticized and found to rest on a confusion between it and the claim that Putnamian and Burgean type relational psychological properties do not affect the causal powers of the mental states that have them. While it is true that Putnamian (...) and Burgean type relational psychological properties do not affect causal powers, it is false that no relational psychological properties do. Examples of relational psychological properties that do affect causal powers are given and psychological laws are sketched that subsume twins in virtue of them instantiating these relational properties rather than them sharing the narrow contents of their thoughts. (shrink)

This paper argues that Plato’s arguments at Cratylus 386e-390d are more robustly analogical than is generally supposed. Accordingly, it first establishes the nature of the main analogues. It then demonstrates the argument’s underlying structural relation, extending it to the target domain and to Socrates’ chosen method for evaluating that domain.

Both Derrida and Ricœur address philosophy’s relation to metaphor, and both take Aristotle as their starting points. However, though Ricœur’s The Rule of Metaphor is largely a response to Derrida’s “White Mythology,” Ricœur seems to pass right over Derrida’s critically important interpretation of Aristotle. In this essay, I dispel concerns that Ricœur may have been intellectually irresponsible in his engagement with Derrida on this point, and I demonstrate how Study 1 makes better sense as a detailed response to Derrida.

In two experiments we demonstrate a substantial cross‐cultural difference in a mnemonic context effect, whereby a magnitude estimate of a simple stimulus such as a line or circle is biased toward the center of the distribution of previously seen instances of the same class. In support of the hypothesis that Asians are more likely than Americans to disperse their attention to both the target stimulus and its mnemonic context, this effect was consistently larger for Japanese than for Americans. Moreover, the (...) cultural difference was attenuated by an experimentally induced belief in class homogeneity that augmented the context effect itself in both cultures. More important, these belief effects happened in the absence of any objective change in stimulus distribution. Implications for sociocultural shaping of cognition are discussed. (shrink)

Huttenlocher et al. (J Exp Psychol Gen 129:220–241, 2000) introduce the category adjustment model (CAM). Given that participants imperfectly remember stimuli (which we refer to as “targets”), CAM holds that participants maximize accuracy by using information about the distribution of the targets to improve their judgments. CAM predicts that judgments will be a weighted average of the imperfect memory of the target and the mean of the distribution of targets. Huttenlocher et al. (2000) report on three experiments and conclude that (...) CAM is “verified”. We attempt to replicate the conditions in Experiment 3 from Huttenlocher et al. (2000). We analyze judgment-level data rather than averaged data. We find evidence of a bias toward a set of recent targets rather than a bias toward the running mean. We do not find evidence of learning. The judgments in our dataset are not consistent with CAM. We discuss other defects in HHV—including dividing by zero. It seems that evidence for CAM is a statistical artifact that appears when researchers analyze data averaged across trials and do not consider a recency bias. (shrink)