Miller (1956) summarized evidence that people can remember about seven chunks in short-term memory (STM) tasks. However, that number was meant more as a rough estimate and a rhetorical device than as a real capacity limit. Others have since suggested that there is a more precise capacity limit, but that it is only three to five chunks. The present target article brings together a wide variety of data on capacity limits suggesting that the smaller capacity limit is real. Capacity limits (...) will be useful in analyses of information processing only if the boundary conditions for observing them can be carefully described. Four basic conditions in which chunks can be identified and capacity limits can accordingly be observed are: (1) when information overload limits chunks to individual stimulus items, (2) when other steps are taken specifically to block the recoding of stimulus items into larger chunks, (3) in performance discontinuities caused by the capacity limit, and (4) in various indirect effects of the capacity limit. Under these conditions, rehearsal and long-term memory cannot be used to combine stimulus items into chunks of an unknown size; nor can storage mechanisms that are not capacity-limited, such as sensory memory, allow the capacity-limited storage mechanism to be refilled during recall. A single, central capacity limit averaging about four chunks is implicated along with other, noncapacity-limited sources. The pure STM capacity limit expressed in chunks is distinguished from compound STM limits obtained when the number of separately held chunks is unclear. Reasons why pure capacity estimates fall within a narrow range are discussed and a capacity limit for the focus of attention is proposed. Key Words: attention; enumeration; information chunks; memory capacity; processing capacity; processing channels; serial recall; short-term memory; storage capacity; verbal recall; working memory capacity. (shrink)

How Classification Works attempts to bridge the gap between philosophy and the social sciences using as a focus some of the work of Nelson Goodman. Throughout his long career Goodman has addressed the question: are some ways of conceptualizing more natural than others? This book looks at the rightness of categories, assessing Goodman's role in modern philosophy and explaining some of his ideas on the relation between aesthetics and cognitive theory. Two papers by Nelson Goodman are included in (...) the collection and there are analyses of his work by seven leading academics in anthropology, philosophy, sociology and musicology. (shrink)

In this highly original and accessible book, one of our leading philosophers of religion seeks to answer this question by analyzing the several states of mystic union as they are described and explained in the classical primary literature ...

In his new foreword to this edition, Hilary Putnam forcefully rejects these nativist claims.

. . . Unlike Dewey, he has provided detailed incisive argumentation, and has shown just where the dogmas and dualisms break down." -- Richard Rorty, The Yale Review.

Required reading at more than 100 colleges and universities throughout North America.

Commentators expressed a wide variety of views on whether there is a basic capacity limit of 3 to 5 chunks and, among those who believe in it, about why it occurs. In this response, I conclude that the capacity limit is real and that the concept is strengthened by additional evidence offered by a number of commentators. I consider various arguments why the limit occurs and try to organize these arguments into a conceptual framework or “metatheory” of storage capacity limits (...) meant to be useful in future research to settle the issue. I suggest that principles of memory representation determine what parts of the representation will be most prominent but that limits of attention (or of a memory store that includes only items that have been most recently attended) determine the 3- to 5-chunk capacity limit. (shrink)

With this third edition of Nelson Goodman's The Structure of Appear ance, we are pleased to make available once more one of the most in fluential and important works in the philosophy of our times. Professor Geoffrey Hellman's introduction gives a sustained analysis and appreciation of the major themes and the thrust of the book, as well as an account of the ways in which many of Goodman's problems and projects have been picked up and developed by others. Hellman (...) also suggests how The Structure of Appearance introduces issues which Goodman later continues in his essays and in the Languages of Art. There remains the task of understanding Good man's project as a whole; to see the deep continuities of his thought, as it ranges from logic to epistemology, to science and art; to see it therefore as a complex yet coherent theory of human cognition and practice. What we can only hope to suggest, in this note, is the b. road Significance of Goodman's apparently technical work for philosophers, scientists and humanists. One may say of Nelson Goodman that his bite is worse than his bark. Behind what appears as a cool and methodical analysis of the conditions of the construction of systems, there lurks a radical and disturbing thesis: that the world is, in itself, no more one way than another, nor are we. It depends on the ways in which we take it, and on what we do. (shrink)

This book is a philosophical exploration of the theoretical causes behind the collapse of classical cybernetics. Alcibiades Malapi-Nelson advances the idea that the cybernetic understanding of the nature of a machine entails ontological and epistemological consequences that create both material and theoretical conundrums. He proposes that, given our current state of materials, research, and practices, there might be a way for cybernetics to flourish. The book starts with a historical treatment of cybernetics, and proceeds with a philosophical explanation of (...) its collapse-emphasizing the work of Turing, Ashby and von Neumann-and connects it with the emerging technologies carrying its signature. The transhumanist metaphysics of both cybernetics and NBIC is then unveiled. Finally, avenues of research that may allow these technologies to circumvent the cybernetic fate are indicated. It is advanced that emerging technologies ultimately entail an affirmation of humanity. (shrink)

In this pathbreaking book, which includes a powerful new translation of Hesiod's Works and Days by esteemed translator David Grene, Stephanie Nelson argues that a society's vision of farming contains deep indications about its view of the human place within nature, and our relationship to the divine. She contends that both Hesiod in the Works and Days and Vergil in the Georgics saw farming in this way, and so wrote their poems not only about farming itself, but also about (...) its deeper ethical and religious implications. Hesiod, Nelson argues, saw farming as revealing that man must live by the sweat of his brow, and that good, for human beings, must always be accompanied by hardship. Within this vision justice, competition, cooperation, and the need for labor take their place alongside the uncertainties of the seasons and even of particular lucky and unlucky days to form a meaningful whole within which human life is an integral part. Vergil, Nelson argues, deliberately modeled his poem upon the Works and Days, and did so in order to reveal that his is a very different vision. Hesiod saw the hardship in farming; Vergil sees its violence as well. Farming is for him both our life within nature, and also our battle against her. Against the background of Hesiods poem, which found a single meaning for human life, Vergil thus creates a split vision and suggests that human beings may be radically alienated from both nature and the divine. Nelson argues that both the Georgics and the Works and Days have been misread because scholars have not seen the importance of the connection between the two poems, and because they have not seen that farming is the true concern of both, farming in its deepest and most profoundly unsettling sense. (shrink)

In this pathbreaking book, which includes a powerful new translation of Hesiod's Works and Days by esteemed translator David Grene, Stephanie Nelson argues that a society's vision of farming contains deep indications about its view of the human place within nature, and our relationship to the divine. She contends that both Hesiod in the Works and Days and Vergil in the Georgics saw farming in this way, and so wrote their poems not only about farming itself, but also about (...) its deeper ethical and religious implications. Hesiod, Nelson argues, saw farming as revealing that man must live by the sweat of his brow, and that good, for human beings, must always be accompanied by hardship. Within this vision justice, competition, cooperation, and the need for labor take their place alongside the uncertainties of the seasons and even of particular lucky and unlucky days to form a meaningful whole within which human life is an integral part. Vergil, Nelson argues, deliberately modeled his poem upon the Works and Days, and did so in order to reveal that his is a very different vision. Hesiod saw the hardship in farming; Vergil sees its violence as well. Farming is for him both our life within nature, and also our battle against her. Against the background of Hesiods poem, which found a single meaning for human life, Vergil thus creates a split vision and suggests that human beings may be radically alienated from both nature and the divine. Nelson argues that both the Georgics and the Works and Days have been misread because scholars have not seen the importance of the connection between the two poems, and because they have not seen that farming is the true concern of both, farming in its deepest and most profoundly unsettling sense. (shrink)

What if human joy went on endlessly? Suppose, for example, that each human generation were followed by another, or that the Western religions are right when they teach that each human being lives eternally after death. If any such possibility is true in the actual world, then an agent might sometimes be so situated that more than one course of action would produce an infinite amount of utility. Deciding whether to have a child born this year rather than next is (...) a situation wherein an agent may face several alternatives whose effects could well ramify endlessly on such suppositions, for the child born this year would be a different person—one who preferred different things, performed different actions, and had different descendants—from a child born next year. It has recently been suggested that traditional utilitarianism stumbles on such cases of infinite utility. Specifically, utilitarianism seems to require, for its application, that all experience of pleasure and pain cease at some time in the future or asymptotically approach zero.2 If neither of these conditions holds, then the utility produced by each of two alternative actions may turn out to be infinite, and utilitarianism thus loses its ability to discriminate morally between them. (shrink)

BackgroundThe return of genetics and genomics research results has been a subject of ongoing global debate. Such feedback is ethically desirable to update participants on research findings particularly those deemed clinically significant. Although there is limited literature, debate continues in African on what constitutes appropriate practice regarding the return of results for genetics and genomics research. This study explored perspectives and ethical considerations of Ugandan genomics researchers regarding the return of genetics and genomics research results.MethodsThis was a qualitative study that (...) employed in-depth interviews. Thirty participants were purposively selected based on their expertise as genomics researchers in Uganda. Data were analysed through content analysis along the main themes of the study using a comprehensive thematic matrix, to identify common patterns arising from the narratives. NVivo software 12 was used to support data analysis.ResultsThe return of genetics and genomics research results was generally acceptable to researchers, and some indicated that they had previously returned individual or aggregate results to participants and communities. The main reasons cited for sharing research results with participants included their clinical utility, actionability and overall benefit to society. Ethical considerations for appropriate return of results included a need for effective community engagement, genetic counselling prior to disclosure of the results, adequate informed consent, and proper assessment of the implications of, or consequences of returning of results. However, the approaches to return of results were perceived as unstandardized due to the lack of appropriate regulatory frameworks.ConclusionsThe return of genetic and genomic research results is generally acceptable to researchers despite the lack of appropriate regulatory frameworks. Ethical considerations for return of genetics and genomics research results are highly divergent, hence the need for national ethical guidelines to appropriately regulate the practice. (shrink)

This research investigates the importance of trade-off salience in understanding how variations in consumers’ construal levels can influence moral judgments. Across five experiments, trade-offs are implied and explicitly made salient, and construal levels are manipulated by altering temporal distance and perceptual fluency, and by using a well-established cognitive method. Consistent with prior research, we demonstrate that higher construal levels can reduce anticipated unethical behavior, when trade-offs are not salient, by making higher-level moral values more prominent. When trade-offs are salient, however, (...) we reveal that unethical behavior is increased when construal levels are elevated by making desirability-related thoughts relatively more prominent, compared to feasibility-related thoughts. Tests of mediation provide support for the role of desirability- and feasibility-related thoughts. Together, our results provide insight into the opposing predictions made by construal level theory for ethical decision making by revealing how trade-off salience, often inherent in ethical dilemmas, systematically influences the effects of construal level on ethical decision making. (shrink)

This research investigates the importance of trade-off salience in understanding how variations in consumers’ construal levels can influence moral judgments. Across five experiments, trade-offs are implied and explicitly made salient, and construal levels are manipulated by altering temporal distance and perceptual fluency, and by using a well-established cognitive method. Consistent with prior research, we demonstrate that higher construal levels can reduce anticipated unethical behavior, when trade-offs are not salient, by making higher-level moral values more prominent. When trade-offs are salient, however, (...) we reveal that unethical behavior is increased when construal levels are elevated by making desirability-related thoughts relatively more prominent, compared to feasibility-related thoughts. Tests of mediation provide support for the role of desirability- and feasibility-related thoughts. Together, our results provide insight into the opposing predictions made by construal level theory for ethical decision making by revealing how trade-off salience, often inherent in ethical dilemmas, systematically influences the effects of construal level on ethical decision making. (shrink)

Essays discuss cognition, perception, art, science, truth, metaphor, education, philosophy, and cognitive psychology.

La presente investigación pretende hacer un análisis histórico sobre la figura de San José y sus diferentes manifestaciones en la cultura y sociedad hondureña, como consecuencia de su culto, creación artística y devoción popular. Este culto tiene su origen en la época colonial, específicamente en el s. XVI, con los Concilios de Trento (1545 – 1563), Nueva España (1555, 1565, 1585) y Lima, Perú (1556 y 1561), los cuales contribuyeron a expandir el evangelio desde la iconografía hasta la fundación de (...) poblados que adoptaron esta imagen como Santo Patrón. También, se analiza esta imagen en el imaginario hondureño durante la secularización del Estado, su adopción y creación como un ideal de paternidad que simboliza protección, sustento y responsabilidad en la construcción de la organización familiar, finalizando con la vinculación de San José como patrono de la clase obrera en el siglo XX. (shrink)

How much bacterial evolution occurs in our intestines and which factors control it are currently burning questions. The formation of new ecotypes, some of which capable of coexisting for long periods of time, is highly likely in our guts. Horizontal gene transfer driven by temperate phages that can perform lysogeny is also widespread in mammalian intestines. Yet, the roles of mutation and especially lysogeny as key drivers of gut bacterial adaptation remain poorly understood. The mammalian gut contains hundreds of bacterial (...) species, each with many strains and ecotypes, whose abundance varies along the lifetime of a host. A continuous high input of mutations and horizontal gene transfer events mediated by temperate phages drives that diversity. Future experiments to study the interaction between mutations that cause adaptation in microbiomes and lysogenic events with different costs and benefits will be key to understand the dynamic microbiomes of mammals. Also see the video abstract here: https://youtu.be/Zjqsiyb5Pk0. (shrink)