Paul Ricœur says that our narrative identity depends on how others understand us. This claim, however, does not explicitly address the fact that not everyone receives the same recognition: it underexplains how certain groups are systemically not acknowledged, respected, or taken seriously. More recent work on narrative co-authoring starts to address this fact by examining how people’s vulnerability to co-authoring depends on the context in which they live. But I argue that this work should be extended to attend to the (...) kinds of vulnerabilities that result from what José Medina calls recognition deficiencies, which become more normalized due to structural oppression, specifically what Iris Marion Young calls cultural imperialism. I then illuminate the kinds of vulnerabilities that result from recognition deficiencies in cases of structural oppression by bringing in work in Black feminist thought and epistemic injustice, particularly that of Audre Lorde and Veronica Ivy, into conversation with narrative scholarship. (shrink)

In this article we report relevant data that shed light on the topic of hope and patients’ expectations in the use of DBS, for standard, approved, and established indications, based on a broader qualitative study on the ethical and social challenges that healthcare providers face in the field of DBS.

This paper examines interwoven ethical and epistemological issues raised by attempts to promote responsive childcare practices based on neuroscience evidence on the developmental effects of early stress. The first section presents this “neuroscience argument for responsive early childcare”. The second section introduces some evidential challenges posed by the use of evidence from developmental neuroscience as grounds for parental practice recommendations and then advances a set of observations about the limitations of the evidence typically cited. Section three highlights the ethical implications (...) of the neuroscience argument for responsive early childcare. It argues that the neuroscience argument, first, fuels unwarranted parental anxiety by unduly raising the stakes of families’ early childcare choices and, second, threatens public confidence in developmental science’s potential to inform childcare practices and policy that enhance children’s health and well being. (shrink)

Biomedical ethics is an essential part of the medical curriculum because it is thought to enrich moral reflection and conduce to ethical decisionmaking and ethical behavior. In recent years, however, the received idea that competency in moral reasoning leads to moral responsibility “in the field” has been the subject of sustained attention. Today, moral education and development research widely recognize moral reasoning as being but one among at least four distinguishable dimensions of psychological moral functioning alongside moral motivation, moral character, (...) and moral sensitivity. In a reflection of this framework, medical educators and curriculum planners repeatedly advance the idea that educators should be concerned with supporting empathy, and this, very often, as a means of improving on and broadening medical ethics education’s traditional focus on moral reasoning. (shrink)

In 1885, during initial discussions of J. C. Maxwell's celebrated thermodynamic demon, Whiting(1) observed that the demon-like velocity selection of molecules can occur in a gravitationally bound gas. Recently, a gravitational Maxwell demon has been proposed which makes use of this observation [D. P. Sheehan, J. Glick, and J. D. Means, Found. Phys. 30, 1227 (2000)]. Here we report on numerical simulations that detail its microscopic phase space structure. Results verify the previously hypothesized mechanism of its paradoxical behavior. (...) This system appears to be the only example of a fully classical mechanical Maxwell demon that has not been resolved in favor of the second law of thermodynamics. (shrink)

Implicit processes almost certainly preceded explicit processes in our evolutionary history, so they are likely to be more resistant to disruption according to the principles of evolutionary biology [Reber, A. S. . The cognitive unconscious: An evolutionary perspective. Consciousness and Cognition, 1, 93–133.]. Previous work . Knowledge, nerves and know-how: The role of explicit versus implicit knowledge in the breakdown of a complex motor skill under pressure. British Journal of Psychology, 83, 343–358.]) has shown that implicitly learned motor skills remain (...) stable under psychological pressure and concurrent cognitive demands, and recently [Poolton, J. M., Masters, R. S. W., & Maxwell, J. P. . Passing thoughts on the evolutionary stability of implicit motor behaviour: Performance retention under physiological fatigue. Consciousness and Cognition, 16, 456–468.] showed that they also remain stable under conditions of anaerobic fatigue that would have significantly challenged the survival skills of our ancestors. Here we examine the stability of an implicitly learned motor skill under fatigue conditions that primarily tax a different physiological system , but which have equally strong evolutionary connotations. Participants acquired a throwing task by means of an errorless learning method or an errorful method. Motor performance in the errorless condition, but not the errorful condition, remained stable following an exhaustive VO2 max. running test. Our findings replicate and extend the work of Poolton et al., providing further support for Reber’s evolutionary distinction between implicit and explicit processes. (shrink)

History of Cognitive Neuroscience documents the major neuroscientific experiments and theories over the last century and a half in the domain of cognitive neuroscience, and evaluates the cogency of the conclusions that have been drawn from them. Provides a companion work to the highly acclaimed Philosophical Foundations of Neuroscience – combining scientific detail with philosophical insights Views the evolution of brain science through the lens of its principal figures and experiments Addresses philosophical criticism of Bennett and Hacker?s previous book Accompanied (...) by more than 100 illustrations. (shrink)

The McNaughton rules for determining whether a person can be successfully defended on the grounds of mental incompetence were determined by a committee of the House of Lords in 1843. They arose as a consequence of the trial of Daniel McNaughton for the killing of Prime Minister Sir Robert Peel’s secretary. In retrospect it is clear that McNaughton suffered from schizophrenia. The successful defence of McNaughton on the grounds of mental incompetence by his advocate Sir Alexander Cockburn involved a profound (...) shift in the criteria for such a defence, and was largely based on the then recently published scientific thesis of the great US psychiatrist Isaac Ray, entitled A Treatise on the Medical Jurisprudence of Insanity. Subsequent discussion of this defence in the House of Lords led to the McNaughton rules, still the basis of the defence of mental incompetence in the courts of much of the English-speaking world. This essay considers one of these rules in the light of the discoveries of cognitive neuroscience made during the 160 years since Ray’s treatise. A major consideration is the relationship between the power of self-control and irresistible impulse as conceived by Cockburn on the one hand, and by cognitive neuroscience on the other. The essay concludes with an analysis of the notion of free will and of the extent to which a subject can exert restraint in the absence of particular synaptic connections in the brain. (shrink)

The history and genesis of major public clinical ethics controversies is intimately related to the publication of opinions and responses in media coverage. To provide a sample of public response in the media, this paper reports the results of a content analysis of letters to editors published in the four most prolific American newspapers for the Schiavo controversy. Opinions expressed in the letters sampled strongly supported the use of living wills and strongly condemned public attention to the case as well (...) as political interventions. Letters tended to be against withdrawal of life support, proxy consent and associated procedures as well as against court decisions and legal procedures. In comparison with reports written by journalists, letters to editors contained fewer controversial claims about Schiavo''s neurological condition and behavioural repertoire but similar loaded language to describe withdrawal of life support. Distinct public discourses can be encountered in different stakeholders suggesting complex and extensive pluralism even within the media. (shrink)

Three experiments explore the role of working memory in motor skill acquisition and performance. Traditional theories postulate that skill acquisition proceeds through stages of knowing, which are initially declarative but later procedural. The reported experiments challenge that view and support an independent, parallel processing model, which predicts that procedural and declarative knowledge can be acquired separately and that the former does not depend on the availability of working memory, whereas, the latter does. The behaviour of these two processes was manipulated (...) by providing or withholding visual (and auditory) appraisal of outcome feedback. Withholding feedback was predicted to inhibit the use of working memory to appraise success and, thus, prevent the formation of declarative knowledge without affecting the accumulation of procedural knowledge. While the first experiment failed to support these predictions, the second and third experiments demonstrated that procedural and declarative knowledge can be acquired independently. It is suggested that the availability of working memory is crucial to motor performance only when the learner has come to rely on its use. (shrink)

“Wrongful birth” is a controversial malpractice action, which has arisen in the past two decades, secondary to an expanding knowledge of human genetics and the constitutionally protected access to abortion. Under the wrongful birth claim, parents of a child with a congenital illness or abnormality may bring suit against a physician who allegedly failed to provide appropriate prenatal counseling or information. Typically, the parents claim that they were inadequately warned of a potential problem in their child, and that this paucity (...) of timely information prevented them from avoiding the pregnancy or from obtaining an abortion. While these cases have arisen in a variety of clinical circumstances, a characteristic example is the obstetrician who fails to offer amniocentesis to a woman of advanced maternal age who subsequently gives birth to a child with Down syndrome. Since the parents were prevented from learning of the abnormality and therefore exercising the option to terminate the pregnancy, they may claim damages for themselves for the wrongful birth of the infant. (shrink)

“Wrongful birth” is a controversial malpractice action, which has arisen in the past two decades, secondary to an expanding knowledge of human genetics and the constitutionally protected access to abortion. Under the wrongful birth claim, parents of a child with a congenital illness or abnormality may bring suit against a physician who allegedly failed to provide appropriate prenatal counseling or information. Typically, the parents claim that they were inadequately warned of a potential problem in their child, and that this paucity (...) of timely information prevented them from avoiding the pregnancy or from obtaining an abortion. While these cases have arisen in a variety of clinical circumstances, a characteristic example is the obstetrician who fails to offer amniocentesis to a woman of advanced maternal age who subsequently gives birth to a child with Down syndrome. Since the parents were prevented from learning of the abnormality and therefore exercising the option to terminate the pregnancy, they may claim damages for themselves for the wrongful birth of the infant. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:LettersMaxwell J. Mehlman, Susan R. Massey, Ronald M. Green, and Fred RosnerPhysicians and the Allocation of Scarce ResourcesMadam: We read with interest Dr. Pellegrino's commentary on our article in the December 1994 issue of the Kennedy Institute of Ethics Journal, and commend him for pointing out so well the different ways that law and ethics approach the issue of physician allocation of scarce resources.We wish to make one clarification. (...) Dr. Pellegrino states that we propose that fiduciary duties be abolished. Quite the contrary, our position is that fiduciary obligations are essential to the maintenance of trust—which we believe to be an efficient as well as an ethical element of the patient-provider relationship. If fiduciary duties are undercut, as we pointed out they are by the Oregon Medicaid legislation, then some other method of promoting trust must be established, and, as we point out in the article, it is difficult to identify what that method could be.Maxwell J. MehlmanandSusan R. MasseyThe Law Medicine CenterArter & HaddenCase Western Reserve UniversityCleveland, OHSchool of LawCleveland, OHReport of the Human Embryo Research PanelMadam: In the December 1994 issue of the Kennedy Institute of Ethics Journal, I reported on the controversy surrounding the work of the NIH Human Embryo Research Panel and the conclusions reached in its report, which was formally presented to NIH Director Harold Varmus on September 27, 1994. At that time, the report was to be reviewed by the Advisory Committee to the Director (ACD) until its next meeting in early December. I am writing to update your readers on the fate of the Panel's report.On the morning of December 2, 1994, following a previous afternoon of animated discussion, the ACD unanimously accepted the Report of the Human Embryo Research Panel. Panel members and members of the NIH staff who were present and had worked for nearly a year on the Report were gratified by this vote of confidence and by the strong support of NIH Director Harold Varmus.We had little time to enjoy this success. Within a matter of hours, the White House issued a press release in which President Clinton thanked the committee for its work and then, in a remark overruling one of the key recommendations in our report, stated: "I do not believe that federal funds should be used to support the creation of human embryos for research purposes, and I have directed that NIH not allocate any resources for such research." [End Page 83]As a Panel member and active participant in that day's events, my initial response was one of shock. I was particularly distressed that the President and his advisors chose a moment so late in the process to make their views known. Why had we worked for months, I asked, without a word of concern from the White House? Although Panel members were guided primarily by our perceptions of the ethical and scientific issues involved, some were close to the political realities of Washington and would have introduced these concerns into the Panel's deliberations.Within a matter of days, my own sense of outrage had diminished. First of all, it was clear that whatever the personal sources of the President's objections to the Panel's recommendations, this high level political intervention was inevitable. Less than a month before, on November 8, with the election of a majority House and Senate, the political environment for embryo research had changed dramatically. The previous June, 32 congressmen, most of them members of a minority Republican party, had signed a letter protesting the Panel's work. Now, one of the signers of that letter, Newt Gingrich, was destined to be Speaker of the House.Second, it became clear that the damage was not total. The President has forbidden NIH to support work involving the deliberate creation of embryos for research. Without exception, members of the Panel had come to the conclusion that some development of "research embryos" must be permitted to reduce the risks of new assisted reproductive technologies, to enhance scientific knowledge, and to develop new therapies for a range of serious diseases. All these... (shrink)

This paper seeks to advance ethical practice in business and integrate ethics with management curricula. It focuses on the ethical dimensions of incompany research conducted by human resource practitioners who are part time students on a postgraduate research degree award (M.Sc. in HRM). These dual roles of academic researcher in HRM and HR practitioner can become blurred and present particular ethical considerations. Beyond ethical perspectives of HRM, the paper investigates the ethics of in-company research in terms of conceptual and operational (...) factors. The main conclusion is that ethical guidelines need to be developed for M.Sc. in HRM students. Draft guidelines are offered as the basis for development. (shrink)

Patients with insufficient financial resources place physicians in a conflict of interest between the patients' needs and the financial interests of the physician, other patients, and society. Not only must physicians act ethically, but they must avoid liability for violating their legal duties to their patients. The traditional rules of contract and malpractice law that govern the patient-physician relationship do not provide satisfactory guidelines. Better answers are found in the rules of fiduciary law, but only with regard to direct conflicts (...) between patients and physicians and only at the risk of reducing patient access to care. Certain types of legislative action can resolve these conflicts by altering the traditional legal rules, but care must be taken to preserve patient-physician trust, which the legal rules were designed to enhance. (shrink)

Heuristics of evolutionary biology dictate that phylogenetically older processes are inherently more stable and resilient to disruption than younger processes. On the grounds that non-declarative behaviour emerged long before declarative behaviour, Reber argues that implicit learning is supported by neural processes that are evolutionarily older than those supporting explicit learning. Reber suggested that implicit learning thus leads to performance that is more robust than explicit learning. Applying this evolutionary framework to motor performance, we examined whether implicit motor learning, relative to (...) explicit motor learning, conferred motor output that was resilient to physiological fatigue and durable over time. In Part One of the study a fatigued state was induced by a double Wingate Anaerobic test protocol. Fatigue had no affect on performance of participants in the implicit condition; whereas, performance of participants in the explicit condition deteriorated significantly. In Part Two of the study a convenience sample of participants was recalled following a one-year hiatus. In both the implicit and the explicit condition retention of performance was seen and, contrary to the findings in Part One, so was resilience to fatigue. The resilient performance in the explicit condition after one year may have resulted from forgetting or from consolidation of declarative knowledge as implicit memories. In either case, implicit processes were left to more effectively support motor performance. (shrink)

Gilbert and colleagues point out the discrepancy between the limited empirical data illustrating changes in personality following implantation of deep brain stimulating electrodes and the vast number of conceptual neuroethics papers implying that these changes are widespread, deleterious, and clinically significant. Their findings are reminiscent of C. P. Snow’s essay on the divide between the two cultures of the humanities and the sciences. This division in the literature raises significant ethical concerns surrounding unjustified fear of personality changes in the context (...) of DBS and negative perceptions of clinician-scientists engaged in DBS. These concerns have real world implications for funding future innovative, DBS trials aimed to reduce suffering as well as hampering true interdisciplinary scholarship. We argue that the philosophical tradition of pragmatism and the value it places on empirical inquiry, experiential knowledge, and inter-disciplinary scholarship – reflecting diverse ways of knowing – provides a framework to start to address the important questions Gilbert and colleagues raise. In particular, we highlight the importance of expert clinician knowledge in contributing to the neuroethical questions raised by Gilbert and colleagues. Finally, we provide illustrative examples of some of our interdisciplinary empirical research that demonstrate the iterative cycle of inquiry characteristic of pragmatism in which conceptual neuroethics questions have led to empirical studies whose results then raise additional conceptual questions that give rise to new empirical studies in a way that highlights the contributions of the humanities and the sciences. (shrink)

Gilbert and colleagues point out the discrepancy between the limited empirical data illustrating changes in personality following implantation of deep brain stimulating electrodes and the vast number of conceptual neuroethics papers implying that these changes are widespread, deleterious, and clinically significant. Their findings are reminiscent of C. P. Snow’s essay on the divide between the two cultures of the humanities and the sciences. This division in the literature raises significant ethical concerns surrounding unjustified fear of personality changes in the context (...) of DBS and negative perceptions of clinician-scientists engaged in DBS. These concerns have real world implications for funding future innovative, DBS trials aimed to reduce suffering as well as hampering true interdisciplinary scholarship. We argue that the philosophical tradition of pragmatism and the value it places on empirical inquiry, experiential knowledge, and inter-disciplinary scholarship – reflecting diverse ways of knowing – provides a framework to start to address the important questions Gilbert and colleagues raise. In particular, we highlight the importance of expert clinician knowledge in contributing to the neuroethical questions raised by Gilbert and colleagues. Finally, we provide illustrative examples of some of our interdisciplinary empirical research that demonstrate the iterative cycle of inquiry characteristic of pragmatism in which conceptual neuroethics questions have led to empirical studies whose results then raise additional conceptual questions that give rise to new empirical studies in a way that highlights the contributions of the humanities and the sciences. (shrink)

Gilbert and colleagues point out the discrepancy between the limited empirical data illustrating changes in personality following implantation of deep brain stimulating electrodes and the vast number of conceptual neuroethics papers implying that these changes are widespread, deleterious, and clinically significant. Their findings are reminiscent of C. P. Snow’s essay on the divide between the two cultures of the humanities and the sciences. This division in the literature raises significant ethical concerns surrounding unjustified fear of personality changes in the context (...) of DBS and negative perceptions of clinician-scientists engaged in DBS. These concerns have real world implications for funding future innovative, DBS trials aimed to reduce suffering as well as hampering true interdisciplinary scholarship. We argue that the philosophical tradition of pragmatism and the value it places on empirical inquiry, experiential knowledge, and inter-disciplinary scholarship – reflecting diverse ways of knowing – provides a framework to start to address the important questions Gilbert and colleagues raise. In particular, we highlight the importance of expert clinician knowledge in contributing to the neuroethical questions raised by Gilbert and colleagues. Finally, we provide illustrative examples of some of our interdisciplinary empirical research that demonstrate the iterative cycle of inquiry characteristic of pragmatism in which conceptual neuroethics questions have led to empirical studies whose results then raise additional conceptual questions that give rise to new empirical studies in a way that highlights the contributions of the humanities and the sciences. (shrink)

In recent years, language has been shown to play a number of important cognitive roles over and above the communication of thoughts. One hypothesis gaining support is that language facilitates thought about abstract categories, such as democracy or prediction. To test this proposal, a novel set of semantic memory task trials, designed for assessing abstract thought non-linguistically, were normed for levels of abstractness. The trials were rated as more or less abstract to the degree that answering them required the participant (...) to abstract away from both perceptual features and common setting associations corresponding to the target image. The normed materials were then used with a population of people with aphasia to assess the relationship of abstract thought to language. While the language-impaired group with aphasia showed lower overall accuracy and longer response times than controls in general, of special note is that their response times were significantly longer as a function of a trial’s degree of abstractness. Further, the aphasia group’s response times in reporting their degree of confidence (a separate, metacognitive measure) were negatively correlated with their language production abilities, with lower language scores predicting longer metacognitive response times. These results provide some support for the hypothesis that language is an important aid to abstract thought and to metacognition about abstract thought. (shrink)

This paper seeks to advance ethical practice in business and integrate ethics with management curricula. It focuses on the ethical dimensions of in-company research conducted by human resource practitioners who are part time students on a postgraduate research degree award (M.Sc. in HRM). These dual roles of academic researcher in HRM and HR practitioner can become blurred and present particular ethical considerations. Beyond ethical perspectives of HRM, the paper investigates the ethics of in-company research in terms of conceptual and operational (...) factors. The main conclusion is that ethical guidelines need to be developed for M.Sc. in HRM students. Draft guidelines are offered as the basis for development. (shrink)

The article Pragmatismand the Importance of Interdisciplinary Teams in Investigating Personality Changes Following DBS.

We sought to gain more insight into the effects of attention focus and time constraints on skill learning and performance in novices and experts by means of two complementary experiments using a table tennis paradigm. Experiment 1 showed that skill-focus conditions and slowed ball frequency disrupted the accuracy of experts, but dual-task conditions and speeded ball frequency did not. For novices, only speeded ball frequency disrupted accuracy. In Experiment 2, we extended these findings by instructing novices either explicitly or by (...) analogy . Explicitly instructed novices were less accurate in skill-focused and dual-task conditions than in single-task conditions. Following analogy instruction novices were less accurate in the skill-focused condition, but maintained accuracy under dual-task conditions. Participants in both conditions retained accuracy when ball frequency was slowed, but lost accuracy when ball frequency was speeded, suggesting that not attention, but motor dexterity, was inadequate under high temporal constraints. (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)

Wynn describes a revolution in cognitive abilities some 500,000 years ago, which added new sophistication to the curiosity of early man – the ability to form hypotheses. This derivative of archaic curiosity is a fundamental feature of learning, and it is our contention that the naive hypothesis testing behavior of early man will have left a distinctive trail in the archaeological record.

The relationship of consciousness to brain, which Schopenhauer grandly referred to as the "world knot," remains an unsolved problem within both philosophy and science. The central focus in what follows is the relevance of science---from psychoanalysis to neurophysiology and quantum physics-to the mind-brain puzzle. Many would argue that we have advanced little since the age of the Greek philosophers, and that the extraordinary accumulation of neuroscientific knowledge in this century has helped not at all. Increas- ingly, philosophers and scientists have (...) tended to go their separate ways in considering the issues, since they tend to differ in the questions that they ask, the data and ideas which are provided for consideration, their methods for answering these questions, and criteria for judging the acceptability of an answer. But it is our conviction that philosophers and scientists can usefully interchange, at least to the extent that they provide co~straints upon each other’s preferred strategies, and it may prove possible for more substantive progress to be made. Philosophers have said some rather naive things by ignoring the extraordinary advances in the neurosciences in the twentieth century. The skull is not filled with green cheese! On the other hand, the arrogance of many scientists toward philosophy and their faith in the scientific method is equally naive. Scientists clearly have much to learn from philosophy as an intellectual discipline. Manifestations of Mind: Some Conceptual and Empirical Issues Walter B. Weimer Pages 5-31 The Mysterious “Split‘: A Clinical Inquiry into Problems of Consciousness and Brain Peter H. Knapp Pages 37-69 Mind, Brain, and the Symbolic Consciousness Irwin Savodnik Pages 73-98 Brain and Free Will John C. Eccles Pages 101-121 An Old Ghost in a New Body C. Wade Savage Pages 125-153 How Dogmatic Can Materialism Be? John C. Eccles Pages 155-160 Mental Phenomena as Causal Determinants in Brain Function R. W. Sperry Pages 163-177 Consciousness as an Emergent Causal Agent in the Context of Control System Theory E. M. Dewan Pages 181-198 Reductionism, Levels of Organization, and the Mind-Body Problem William C. Wimsatt Pages 205-267 Mind, Structure, and Contradiction Gordon G. Globus Pages 271-293 Problems Concerning the Structure of Consciousness Karl H. Pribram Pages 297-313 The Role of Scientific Results in Theories of Mind and Brain: A Conversation among Philosophers and Scientists E. M. Dewan, John C. Eccles, Gordon G. Globus, Keith Gunderson, Peter H. Knapp, Grover Maxwell et al. Pages 317-328 Scientific Results and the Mind-Brain Issue: Some Afterthoughts Grover Maxwell Pages 329-358. (shrink)

Evolutionary gradualism, the randomness of mutations, and the hypothesis that natural selection exerts a pervasive and substantial influence on evolutionary outcomes are pair-wise logically independent. Can the claims about selection and mutation be used to formulate an argument for gradualism? In his Genetical Theory of Natural Selection, R.A. Fisher made an important start at this project in his famous “geometric argument” by showing that a random mutation that has a smaller effect on two or more phenotypes will have a higher (...) average fitness than a random mutation that has a larger phenotypic effect. Motoo Kimura’s demonstration that a gene’s probability of fixation depends on both the selection coefficient and the effective population size shows that Fisher’s argument for gradualism was mistaken. Here we analyze Fisher’s argument and explain how Kimura’s theory leads to a conclusion that Fisher did not anticipate. We identify a fallacy that reasoning about fitness differences and their evolutionary consequences should avoid. We then distinguish forward-directed from backward-directed versions of gradualism. The backward-directed thesis about a single mutation may be correct, but the forward-directed thesis is not. After that we consider a sequence of random mutations that all affect the same cluster of phenotypes and Allen Orr’s idea that there is an optimal sequence of mutation sizes, moving from larger to smaller as the population approaches a fixed optimum. This provides a likelihood justification for a forward-directed version of gradualism when there is a fixed optimum, but it also provides an argument against forward-directed gradualism if the optimum shifts substantially as the population evolves. Finally, we consider whether genome-wide association studies (GWASs) can furnish empirical evidence that bears on the truth of gradualism. The version of gradualism that GWASs directly bear on concerns the phenotypic effect size of a gene after it arises by mutation and has reached an appreciable frequency, not the phenotypic size of the mutation event itself. (shrink)

Maxwell et al. [Maxwell, J. P., Masters, R. S. W., Kerr, E., & Weedon, E. . The implicit benefit of learning without errors. The Quarterly Journal of Experimental Psychology, 54A, 1049–1068. The implicit benefit of learning without errors. The Quarterly Journal of Experimental Psychology, 54A, 1049–1068] suggested that, following unsuccessful movements, the learner forms hypotheses about the probable causes of the error and the required movement adjustments necessary for its elimination. Hypothesis testing is an explicit process that places (...) demands on cognitive resources. Demands on cognitive resources can be identified by measuring probe reaction times and movement times. Lengthened PRT and movement times reflects increased cognitive demands. Thus, PRT and movement times should be longer following errors, relative to successful, movements. This hypothesis was tested using a motor skill . Furthermore, the association between error processing and the preparation and execution phases of movement was examined. The data confirmed that cognitive demand is greater for trials following an error, relative to trials without an error. This effect was apparent throughout learning and in both the preparatory and execution phases of the movement. Cognitive effort also appeared to be higher during movement preparation, relative to movement execution. (shrink)

The term “analogy” stands for a variety of methodological practices all related in one way or another to the idea of proportionality. We claim that in his first substantial contribution to electromagnetism James Clerk Maxwell developed a methodology of analogy which was completely new at the time or, to borrow John North’s expression, Maxwell’s methodology was a “newly contrived analogue”. In his initial response to Michael Faraday’s experimental researches in electromagnetism, Maxwell did not seek an analogy with (...) some physical system in a domain different from electromagnetism as advocated by William Thomson; rather, he constructed an entirely artificial one to suit his needs. Following North, we claim that the modification which Maxwell introduced to the methodology of analogy has not been properly appreciated. In view of our examination of the evidence, we argue that Maxwell gave a new meaning to analogy; in fact, it comes close to modeling in current usage. (shrink)

This paper argues that the idea of a Maxwellian Demon presupposes a notion of non-physical free will. The author has changed her mind in this point later on and now thinks that Mawellian Demons are compatible with mechanics; see her paper on this from 2010 and book from 2012.