Many of the features that distinguish the vertebrates from other chordates are derived from the neural crest, and it has long been argued that the emergence of this multipotent embryonic population was a key innovation underpinning vertebrate evolution. More recently, however, a number of studies have suggested that the evolution of the neural crest was less sudden than previously believed. This has exposed the fact that neural crest, as evidenced by its repertoire of derivative cell types, has evolved through vertebrate (...) evolution. In this light, attempts to derive a typological definition of neural crest, in terms of molecular signatures or networks, are unfounded. We propose a less restrictive, embryological definition of this cell type that facilitates, rather than precludes, investigating the evolution of neural crest. While the evolutionary origin of neural crest has attracted much attention, its subsequent evolution has received almost no attention and yet it is more readily open to experimental investigation and has greater relevance to understanding vertebrate evolution. Finally, we provide a brief outline of how the evolutionary emergence of neural crest potentiality may have proceeded, and how it may be investigated. BioEssays 30:530–541, 2008. © 2008 Wiley Periodicals, Inc. (shrink)

© 2017. The American Astronomical Society. All rights reserved.We present new observations of the low-mass companion to HD 984 taken with the Gemini Planet Imager as a part of the GPI Exoplanet Survey campaign. Images of HD 984 B were obtained in the J and H bands. Combined with archival epochs from 2012 and 2014, we fit the first orbit to the companion to find an 18 au orbit with a 68% confidence interval between 14 and 28 au, an eccentricity (...) of 0.18 with a 68% confidence interval between 0.05 and 0.47, and an inclination of 119°with a 68% confidence interval between 114°and 125°. To address the considerable spectral covariance in both spectra, we present a method of splitting the spectra into low and high frequencies to analyze the spectral structure at different spatial frequencies with the proper spectral noise correlation. Using the split spectra, we compare them to known spectral types using field brown dwarf and low-mass star spectra and find a best-fit match of a field gravity M6.5 ±1.5 spectral type with a corresponding temperature of K. Photometry of the companion yields a luminosity of log=2.88 ± 0.07 dex with DUSTY models. Mass estimates, again from DUSTY models, find an age-dependent mass of 34 ±1 to 95 ±4 M Jup. These results are consistent with previous measurements of the object. (shrink)

Ancient pathways promoting unicellularity and multicellularity are associated with cancer, the former being pro‐oncogenic and the latter acting to suppress oncogenesis. However, there are only a limited number of non‐vertebrate models for studying these pathways. Here, we review Dictyostelium discoideum and describe how it can be used to understand these gene networks. D. discoideum has a unicellular and multicellular life cycle, making it possible to study orthologs of cancer‐associated genes in both phases. During development, differentiated amoebae form a fruiting body (...) composed of a mass of spores that are supported atop a stalk. A portion of the cells sacrifice themselves to become non‐reproductive stalk cells. Cheating disrupts the principles of multicellularity, as cheater cells alter their cell fate to preferentially become spores. Importantly, D. discoideum has gene networks and several strategies for maintaining multicellularity. Therefore, D. discoideum can help us better understand how conserved genes and pathways involved in multicellularity also influence cancer development, potentially identifying new therapeutic avenues. (shrink)

Using student self-reported cheating admissions and answers from a hypothetical cheating scenario, this paper analyzes the effects of individual and situational factors on potential cheating behavior. Results confirm several conclusions about student factors that are related to cheating. The probability of cheating is associated with younger students, lower GPAs, alcohol consumption, fraternity/sorority membership, and having cheated in high school. Student perceptions of the certainty and severity of punishment appear to have a negative and significant impact on the probability of cheating (...) on in-class assignments. Students who report a belief that cheating is never acceptable appear to be significantly less likely to cheat in any circumstance. This study illustrates the context-dependent nature of academic dishonesty, and the associated difficulty in understanding the relationships between measurable factors and cheating behavior. (shrink)

REMARKS ON EVOLUTION AND TIME-SCALES, Graham Cairns-Smith; HODGSON'S BLACK BOX, Thomas Clark; DO HODGSON'S PROPOSITIONS UNIQUELY CHARACTERIZE FREE WILL?, Ravi Gomatam; WHAT SHOULD WE RETAIN FROM A PLAIN PERSON'S CONCEPT OF FREE WILL?, Gilberto Gomes; ISOLATING DISPARATE CHALLENGES TO HODGSON'S ACCOUNT OF FREE WILL, Liberty Jaswal; FREE AGENCY AND LAWS OF NATURE, Robert Kane; SCIENCE VERSUS REALIZATION OF VALUE, NOT DETERMINISM VERSUS CHOICE, Nicholas Maxwell; COMMENTS ON HODGSON, J.J.C. Smart; THE VIEW FROM WITHIN, Sean Spence; COMMENTARY ON HODGSON, (...) Henry Stapp. (shrink)

In the second edition of this groundbreaking text in non-Western philosophy, sixteen experts introduce some of the great philosophical traditions in the world. The essays unveil exciting, sophisticated philosophical traditions that are too often neglected in the western world. The contributors include the leading scholars in their fields, but they write for students coming to these concepts for the first time. Building on revisions and updates to the original, this new edition also considers three philosophical traditions for the first time—Jewish, (...) Buddhist, and South Pacific philosophy. (shrink)

One of the most dominant approaches to semantics for relevant (and many paraconsistent) logics is the Routley-Meyer semantics involving a ternary relation on points. To some (many?), this ternary relation has seemed like a technical trick devoid of an intuitively appealing philosophical story that connects it up with conditionality in general. In this paper, we respond to this worry by providing three different philosophical accounts of the ternary relation that correspond to three conceptions of conditionality. We close by briefly discussing (...) a general conception of conditionality that may unify the three given conceptions. (shrink)

Robert Audi’s Seeing, Knowing, and Doing argues that knowledge does not entail justification, given a broadly externalist conception of knowledge and an access internalist conception of justification, where justification requires the ability to cite one’s grounds or reasons. On this view, animals and small children can have knowledge while lacking justification. About cases like these and others, Audi concludes that knowledge does not entail justification. But the access internalist sense of “justification” is but one of at least two ordinary (...) senses of the term. On a broader or looser sense, “justification” means “being in the right” where that involves meeting a standard or norm. I argue that the beliefs of animals and small children can then meet standards or norms associated with truth and knowledge such that their beliefs may count as justified in this broader or looser sense. I then question whether knowledge fails to entail justification on this broader sense. (shrink)

The restricted semantic ellipsis hypothesis, we have argued, is committed to an enormous number of multiply ambiguous expressions, the introduction of which gains us no extra explanatory power. We should, therefore, reject it. We should also spurn the original version since: (a) it entails the restricted version and (b) it incorrectly declares that, whenever a speaker makes an assertion by uttering an unembedded word or phrase, the expression uttered has illocutionary force.Once rejected, the semantic ellipsis hypothesis cannot account for the (...) many exceptions to the syntactic ellipsis hypothesis. So, we can safely infer that the Claim is true.(1)The Claim: Speakers can make assertions by uttering ordinary, unembedded, words and phrases.To the degree that the Claim reallyis in tension with the primacy of sentences (i.e., the view that (a) only sentences can be used to make assertions and (b) only sentences are meaningful in isolation) this doctrine must also be rejected. (shrink)

This article introduces three arguments that share a single conclusion: that a comprehensive science of language cannot describe relations of semantic reference, i.e. word–world relations. Spelling this out, if there is to be a genuine science of linguistic meaning, then a theory of meaning cannot involve assigning external, real-world, objects to names, nor sets of external objects to predicates, nor truth values to sentences. Most of the article tries to explain and defend this broad conclusion. The article also presents, in (...) a very limited way, a positive alternative to external-referent semantics for expressions. This alternative has two parts: first, that the meanings of words and sentences are mental instructions, not external things; second, that it is people who refer by using words and sentences, and word/sentence meanings play but a partial role in allowing speakers to talk about the world. (shrink)

There is a contradiction in our ideas about moral responsibility. In one strand of our thinking, we believe that a person can become more blameworthy by luck. Consider some examples in order to make that idea concrete. Two reckless drivers manage their vehicles in the same way, and one but not the other kills a pedestrian. Two corrupt judges would each freely take a bribe if one were offered. By luck of the courthouse draw, only one judge is offered a (...) bribe, and so only one takes a bribe. Luck is the salient difference between the agents in each case. After all, the spatial location of the pedestrian is outside of each driver’s control, and being offered a bribe is outside of each judge’s control. But we blame the killer driver more than the merely reckless driver, and we blame the bribe-taker more than the mere would-be bribe-taker. This is because we believe that the killer driver and the bribe-taker are more blameworthy than each of their counterparts. Nevertheless, the idea that luck affects moral responsibility contradicts another feature of our thinking captured in this moral principle: A person’s blameworthiness cannot be affected by that which is not within her control. This moral principle yields the verdict that the drivers are equally blameworthy and that the judges are equally blameworthy. So, to put the contradiction in concrete terms, our thinking about moral responsibility implies that the drivers are and are not equally blameworthy, and the same is true for the judges. -/- I argue that only the first strand of our thinking is correct. Certain kinds of luck in results, circumstances, and character can partially determine a person’s praiseworthiness and blameworthiness. In terms of the examples, I argue that the killer driver and the bribe-taker are more blameworthy than each of their counterparts. But if I am to make genuine progress in the moral luck debate, my arguments cannot appeal to case intuitions such as ‘the killer driver is more blameworthy,’ because the problem of moral luck is fundamentally a clash of intuitions. So, I offer arguments from diverse areas in philosophy in order to ensure that they do not bottom out in standard pro-moral luck intuitions. (shrink)

My modest aim in this note is to sketch three interrelated critiques of public languages, and to respond to them. All are broadly Chomskyan, and all support the same conclusion: that, insofar as they even exist, the study of public languages is not a viable scientific project. (Related critiques of semantics, understood as involving word–world relations, will be touched on as well).

Moral luck occurs when factors beyond an agent’s control positively affect how much praise or blame she deserves. Kinds of moral luck are differentiated by the source of lack of control such as the results of her actions, the circumstances in which she finds herself, and the way in which she is constituted. Many philosophers accept the existence of some of these kinds of moral luck but not others, because, in their view, the existence of only some of them would (...) make morality unfair. I, however, argue that this intermediary approach is unstable, because either morality is fair in ways that rule out resultant, circumstantial, and constitutive moral luck (and this leads to moral responsibility skepticism), or morality is unfair in ways that permit the existence of those kinds of moral luck. Thus, such intermediary approaches lack the motivation that their proponents have long taken them to have. In the appendix, I point to ways in which morality is unfair concerning the scope of moral responsibility, moral obligation, moral taint, being a good or bad person, and flourishing. (shrink)

It seems to me that the argument has a certain initial plausibility, especially when ‘sentence’, ‘used in isolation’ and ‘meaning in isolation’ are explicated in a certain way. ~For instance, one must take sentences to include elliptical sentences; and one must take ‘use in isolation’ to entail use in the performance of a genuine speech act.! It also seems to me that the argument is important. For one thing, the Conclusion can be recruited in reasoning to the effect that, because..

Are there really such things as public languages? Are things like English and Urdu mere myths? I urge that, despite an intriguing line of thought which may be extracted from Davidson’s ‘A Nice Derangement of Epitaphs’, philosophers are right to countenance such things in their final ontology. The argument rebutted, which I concede may not have been one which Davidson himself ultimately embraced, is that knowledge of a public language is neither necessary nor sufficient for successful conversational interaction, so that (...) such shared languages are explanatorily otiose. In particular, the ability of interlocutors to communicate in the face of linguistic novelty and error seems to support this conclusion. I respond with two main points. First, initial impressions aside, knowledge of things like English and Urdu is explanatorily necessary. Second, even if successful conversation could be explained without positing such knowledge, we have other reasons to take public languages ontologically seriously. Th.. (shrink)

Every account of moral responsibility has conditions that distinguish between the consequences, actions, or traits that warrant praise or blame and those that do not. One intuitive condition is that praiseworthiness and blameworthiness cannot be affected by luck, that is, by factors beyond the agent’s control. Several philosophers build their accounts of moral responsibility on this luck-free condition, and we may call their views Luck-Free Moral Responsibility (LFMR). I offer moral and metaphysical arguments against LFMR. First, I maintain that considerations (...) of fairness that often motivate LFMR do not require its adoption. Second, I contend that LFMR has counterintuitive implications for the nature and scope of praiseworthiness and blameworthiness and that LFMR is vulnerable to a reductio ad absurdum. Third, I state some common reasons for thinking that LFMR’s commitment to true counterfactuals of libertarian freedom is problematic, and I argue that if there are no such true counterfactuals and if LFMR is true, a person is praiseworthy and blameworthy at most for a tiny fraction of her actions. Fourth, I argue that proponents of LFMR cannot escape this skeptical cost by appealing to a different kind of counterfactual of freedom. Fifth, I develop an anti-skeptical motivation to affirm the idea that luck can affect moral responsibility. (shrink)

Martin Luther affirms his theological position by saying “Here I stand. I can do no other.” Supposing that Luther’s claim is true, he lacks alternative possibilities at the moment of choice. Even so, many libertarians have the intuition that he is morally responsible for his action. One way to make sense of this intuition is to assert that Luther’s action is indirectly free, because his action inherits its freedom and moral responsibility from earlier actions when he had alternative possibilities and (...) those earlier directly free actions formed him into the kind of person who must refrain from recanting. Surprisingly, libertarians have not developed a full account of indirectly free actions. I provide a more developed account. First, I explain the metaphysical nature of indirectly free actions such as Luther’s. Second, I examine the kind of metaphysical and epistemic connections that must occur between past directly free actions and the indirectly free action. Third, I argue that an attractive way to understand the kind of derivative moral responsibility at issue involves affirming the existence of resultant moral luck. (shrink)

Philosophers often consider problems of free will and moral luck in isolation from one another, but both are about control and moral responsibility. One problem of free will concerns the difficult task of specifying the kind of control over our actions that is necessary and sufficient to act freely. One problem of moral luck refers to the puzzling task of explaining whether and how people can be morally responsible for actions permeated by factors beyond their control. This chapter explicates and (...) assesses skeptical, compatibilist, and libertarian approaches to moral luck. First, I argue that what makes the above problems of free will and moral luck distinct is largely their emphasis on different kinds of luck. Second, I describe and evaluate skeptical arguments from constitutive and circumstantial luck that it is impossible to act freely. Third, I explicate and assess various support and implication relationships between various kinds of compatibilism and libertarianism, on the one hand, and causal, constitutive, circumstantial, and resultant moral luck, on the other. (shrink)

Galen Strawson’s Basic Argument is that because self-creation is required to be truly morally responsible and self-creation is impossible, it is impossible to be truly morally responsible for anything. I contend that the Basic Argument is unpersuasive and unsound. First, I argue that the moral luck debate shows that the self-creation requirement appears to be contradicted and supported by various parts of our commonsense ideas about moral responsibility, and that this ambivalence undermines the only reason that Strawson gives for the (...) self-creation requirement. Second, I argue that the self-creation requirement is so demanding that either it is an implausible requirement for a species of true moral responsibility that we take ourselves to have or it is a plausible requirement of a species of true moral responsibility that we have never taken ourselves to have. Third, I explain that Strawson overgeneralizes from instances of constitutive luck that obviously undermine moral responsibility to all kinds of constitutive luck. (shrink)

Part I: The Life of Cognitive Science:. William Bechtel, Adele Abrahamsen, and George Graham. Part II: Areas of Study in Cognitive Science:. 1. Analogy: Dedre Gentner. 2. Animal Cognition: Herbert L. Roitblat. 3. Attention: A.H.C. Van Der Heijden. 4. Brain Mapping: Jennifer Mundale. 5. Cognitive Anthropology: Charles W. Nuckolls. 6. Cognitive and Linguistic Development: Adele Abrahamsen. 7. Conceptual Change: Nancy J. Nersessian. 8. Conceptual Organization: Douglas Medin and Sandra R. Waxman. 9. Consciousness: Owen Flanagan. 10. Decision Making: J. Frank (...) Yates and Paul A. Estin. 11. Emotions: Paul E. Griffiths. 12. Imagery and Spatial Representation: Rita E. Anderson. 13. Language Evolution and Neuromechanisms: Terrence W. Deacon. 14. Language Processing: Kathryn Bock and Susan M. Garnsey. 15. Linguistics Theory: D. Terence Langendoen. 16. Machine Learning: Paul Thagard. 17. Memory: Henry L. Roediger III and Lyn M. Goff. 18. Perception: Cees Van Leeuwen. 19. Perception: Color: Austen Clark. 20. Problem Solving: Kevin Dunbar. 21. Reasoning: Lance J. Rips. 22. Social Cognition: Alan J. Lambert and Alison L. Chasteen. 23. Unconscious Intelligence: Rhianon Allen and Arthur S. Reber. 24. Understanding Texts: Art Graesser and Pam Tipping. 25. Word Meaning: Barbara C. Malt. Part III: Methodologies of Cognitive Science:. 26. Artificial Intelligence: Ron Sun. 27. Behavioral Experimentation: Alexander Pollatsek and Keith Rayner. 28. Cognitive Ethology: Marc Bekoff. 29. Deficits and Pathologies: Christopher D. Frith. 30. Ethnomethodology: Barry Saferstein. 31. Functional Analysis: Brian Macwhinney. 32. Neuroimaging: Randy L. Buckner and Steven E. Petersen. 33. Protocal Analysis: K. Anders Ericsson. 34. Single Neuron Electrophysiology: B. E. Stein, M.T. Wallace, and T.R. Stanford. 35. Structural Analysis: Robert Frank. Part IV: Stances in Cognitive Science:. 36. Case-based Reasoning: David B. Leake. 37. Cognitive Linguistics: Michael Tomasello. 38. Connectionism, Artificial Life, and Dynamical Systems: Jeffrey L. Elman. 39. Embodied, Situated, and Distributed Cognition: Andy Clark. 40. Mediated Action: James V. Wertsch. 41. Neurobiological Modeling: P. Read Montague and Peter Dayan. 42. Production Systems: Christian D. Schunn and David Klahr. Part V: Controversies in Cognitive Science:. 43. The Binding Problem: Valerie Gray Hardcastle. 44. Heuristics and Satisficing: Robert C. Richardson. 45. Innate Knowledge: Barbara Landau. 46. Innateness and Emergentism: Elizabeth Bates, Jeffrey L. Elman, Mark H. Johnson, Annette Karmiloff-Smith, Domenico Parisi, and Kim Plunkett. 47. Intentionality: Gilbert Harman. 48. Levels of Explanation and Cognition Architectures: Robert N. McCauley. 49. Modularity: Irene Appelbaum. 50. Representation and Computation: Robert S. Stufflebeam. 51. Representations: Dorrit Billman. 52. Rules: Terence Horgan and John Tienson. 53. Stage Theories Refuted: Donald G. Mackay. Part VI: Cognitive Science in the Real World:. 54. Education: John T. Bruer. 55. Ethics: Mark L. Johnson. 56. Everyday Life Environments: Alex Kirlik. 57. Institutions and Economics: Douglass C. North. 58. Legal Reasoning: Edwina L. Rissland. 59. Mental Retardation: Norman W. Bray, Kevin D. Reilly, Lisa F. Huffman, Lisa A. Grupe, Mark F. Villa, Kathryn L. Fletcher, and Vivek Anumolu. 60. Science: William F. Brewer and Punyashloke Mishra. Selective Biographies of Major Contributors to Cognitive Science: William Bechtel and Tadeusz Zawidzki. (shrink)

One way to frame the problem of moral luck is as a contradiction in our ordinary ideas about moral responsibility. In the case of two identical reckless drivers where one kills a pedestrian and the other does not, we tend to intuit that they are and are not equally blameworthy. The Character Response sorts these intuitions in part by providing an account of moral responsibility: the drivers must be equally blameworthy, because they have identical character traits and people are originally (...) praiseworthy and blameworthy in virtue of, and only in virtue of, their character traits. After explicating two versions of the Character Response, I argue that they both involve implausible accounts of moral responsibility and fail to provide a good solution to the problem of moral luck. I close by noting how proponents of moral luck can preserve a kernel of truth from the Character Response to explain away the intuition that the drivers are equally blameworthy. (shrink)

According to the Free Will Explanation of a traditional view of hell, human freedom explains why some people are in hell. It also explains hell’s punishment and finality: persons in hell have freely developed moral vices that are their own punishment and that make repentance psychologically impossible. So, even though God continues to desire reconciliation with persons in hell, damned persons do not want reconciliation with God. But this moral vice explanation of hell’s finality is implausible. I argue that God (...) can and would make direct or indirect alterations in their character to give them new motivational reasons that re-enable their freedom to repent. Subsequently, I argue that it is probable that each damned person will be saved eventually, because there is a potential infinity of opportunities for free repentance. Thus, if the Free Will Explanation’s descriptions of hell and divine love are correct, it is highly probable that each person in hell escapes to heaven. (shrink)

It is almost unanimously accepted that Kant denies resultant moral luck—that is, he denies that the lucky consequence of a person’s action can affect how much praise or blame she deserves. Philosophers often point to the famous good will passage at the beginning of the Groundwork to justify this claim. I argue, however, that this passage does not support Kant’s denial of resultant moral luck. Subsequently, I argue that Kant allows agents to be morally responsible for certain kinds of lucky (...) consequences. Even so, I argue that it is unclear whether Kant ultimately endorses resultant moral luck. The reason is that Kant does not write enough on moral responsibility for consequences to determine definitively whether he thinks that the lucky consequence for which an agent is morally responsible can add to her degree of praiseworthiness or blameworthiness. The clear upshot, however, is that Kant does not deny resultant moral luck. (shrink)

This concise and affordable anthology is designed for use as a textbook in both undergraduate and graduate courses in philosophy of language. It aims to provide a core of essential primary sources and may be used either on its own, or in conjunction with a secondary source.

Stanovich & West rely for many of their conclusions on correlations of reasoning tasks with SAT scores. The conclusions they draw are suspect because the SAT is not a particularly good measure of so-called g; g is not necessarily causal, SAT scores are no arbiter of what is true, and in any case it is not suprising that reasoning tests correlate with reasoning tests.

The problem of moral luck is that a general fact about luck and an intuitive moral principle jointly imply the following skeptical conclusion: human beings are morally responsible for at most a tiny fraction of each action. This skeptical conclusion threatens to undermine the claim that human beings deserve their respective eternal reward and punishment. But even if this restriction on moral responsibility is compatible with the doctrine of the final judgment, the quality of one’s afterlife within heaven or hell (...) still appears to be lucky. Utilizing recent responses to the problem of moral luck, I explore several Molinist accounts of the final judgment that resolve both theological problems of moral luck. Some of these accounts entirely eliminate moral luck while others ensure that the moral luck involved in the judgment is overall good luck. (DOWNLOAD the published version at the external link below.). (shrink)