Throughout the long history of Classic Maya hieroglyphs, a logosyllabic writing system used from the late first millennium BCE through the mid-second millennium CE in southern Mesoamerica, the most commonly recorded phonetic value was the syllable u (/ʔu/). With over a dozen different u hieroglyphs, Classic Maya scribes had more options for recording /ʔu/ than any other syllable or logograph. Cognitive approaches to writing systems typically attribute graphemic variation (i.e., alternation between signs with equivalent linguistic value) to semantic (...) differences like animacy or to non-linguistic factors like identity. Distribution of Classic Maya u hieroglyphs, however, suggests that morphosyntactic context influenced which grapheme scribes wrote and when. This case suggests that scribal knowledge of Classic Maya hieroglyphs included ideas about writing's relationship to language. It also highlights the cognitive relevance of morphosyntax for a writing system's users as they differentiate among graphic signs with identical linguistic denotation. (shrink)

Symbolic representation acquisition is the complex cognitive process consisting of learning to use a symbol to stand for something else. A variety of non-human animals can engage in symbolic representation learning. One particularly complex form of symbol representation is the associations between orthographic symbols and speech sounds, known as grapheme–phoneme correspondence. To date, there has been little evidence that animals can learn this form of symbolic representation. Here, we evaluated whether an Umbrella cockatoo (Cacatua alba) can learn letter-speech correspondence using (...) English words. The bird-participant was trained with phonics instruction and then tested on pairs of index cards while the experimenter spoke the word. The words were unknown to the bird and the experimenter was blinded to the correct card position. The cockatoo’s accuracy (M = 71%) was statistically significant. Further, we found a strong correlation between the bird’s word-identification success and the number of overlapping letters between words, where the more overlapping letters between words, the more likely the cockatoo answered incorrectly. Our results strongly suggest that parrots may have the ability to learn grapheme–phoneme correspondences. (shrink)

In this study, we examined the learning of new grapheme-phoneme correspondences in individuals with and without dyslexia. Additionally, we investigated the relation between grapheme-phoneme learning and measures of phonological awareness, orthographic knowledge and rapid automatized naming, with a focus on the unique joint variance of grapheme-phoneme learning to word and non-word reading achievement. Training of grapheme-phoneme associations consisted of a 20-min training program in which eight novel letters (Hebrew) needed to be paired with speech sounds taken from the participant's native (...) language (Dutch). Eighty-four third grade students, of whom 20 were diagnosed with dyslexia, participated in the training and testing. Our results indicate a reduced ability of dyslexic readers in applying newly learned grapheme-phoneme correspondences while reading words which consist of these novel letters. However, we did not observe a significant independent contribution of grapheme-phoneme learning to reading outcomes. Alternatively, results from the regression analysis indicate that failure to read may be due to differences in phonological and/or orthographic knowledge but not to differences in the grapheme-phoneme-conversion process itself. (shrink)

Grapheme-colour synaesthesia is a perceptual experience where graphemes, letters or words evoke a specific colour, which are experienced either as spatially coincident with the grapheme inducer (projector sub-type) or elsewhere, perhaps without a definite spatial location (associator sub-type). Here, we address the question of whether synaesthesia can be rapidly produced using a hypnotic colour suggestion to examine the possibility of ‘hypnotic synaesthesia’, i.e. subjectively experienced colour hallucinations similar to those experienced by projector synaesthetes. We assess the efficacy of this intervention (...) using an “embedded figures” test, in which participants are required to detect a shape (e.g., a square) composed of local graphemic elements. For grapheme-colour synaesthetes, better performance on the task has been linked to a higher proportion of graphemes perceived as coloured. We found no performance benefits on this test when using a hypnotic suggestion, as compared to a no-suggestion control condition. The same result was found when participants were separated according to the degree to which they were susceptible to the suggestion (number of coloured trials perceived). However, we found a relationship between accuracy and subjective reports of colour in those participants who reported a large proportion of coloured trials: trials in which the embedded figure was accurately recognised (relative to trials in which it was not) were associated with reports of more intense colours occupying a greater spatial extent. Collectively, this implies that hypnotic colour was only perceived after shape detection rather than aiding in shape detection via colour-based perceptual grouping. The results suggest that hypnotically induced colours are not directly comparable to synaesthetic ones. (shrink)

Researchers have long suspected that grapheme-color synaesthesia is useful, but research on its utility has so far focused primarily on episodic memory and perceptual discrimination. Here we ask whether it can be harnessed during rule-based Category learning. Participants learned through trial and error to classify grapheme pairs that were organized into categories on the basis of their associated synaesthetic colors. The performance of synaesthetes was similar to non-synaesthetes viewing graphemes that were physically colored in the same way. Specifically, synaesthetes learned (...) to categorize stimuli effectively, they were able to transfer this learning to novel stimuli, and they falsely recognized grapheme-pair foils, all like non-synaesthetes viewing colored graphemes. These findings demonstrate that synaesthesia can be exploited when learning the kind of material taught in many classroom settings. (shrink)

Grapheme-color synesthetes experience color, not physically present, when viewing symbols. Synesthetes cannot remember learning these associations. Must synesthetic percepts be formed during a sensitive period? Can they form later and be consistent? What determines their nature? We tested grapheme-color synesthete, MC2, before, during and after she studied Hindi abroad. We investigated whether novel graphemes elicited synesthetic percepts, changed with familiarity, and/or benefited from phonemic information. MC2 reported color percepts to novel Devanagari and Hebrew graphemes. MC2 monitored these percepts over 6 (...) months in a Hindi-speaking environment. MC2 and synesthete DN, reported synesthetic percepts for Armenian graphemes, or Cyrillic graphemes + phonemes over time. Synesthetes, not controls, reported color percepts for novel graphemes that gained consistency over time. Phonemic information did not enhance consistency. Thus, synesthetes can form and consolidate percepts to novel graphemes as adults. These percepts may depend on pre-existing grapheme-color relationships but they can flexibly shift with familiarity. (shrink)

��Grapheme-color synaesthesia is a neurological phenomenon in which particular graphemes, such as the numeral 9, automatically induce the simultaneous perception of a particular color, such as the color red. To test whether the concurrent color sensations in graphemecolor synaesthesia are treated as meaningful stimuli, we recorded event-related brain potentials as 8 synaesthetes and 8 matched control subjects read sentences such as ‘‘Looking very clear, the lake was the most beautiful hue of 7.’’ In synaesthetes, but not control subjects, congruous graphemes, (...) compared with incongruous graphemes, elicited a more negative N1 component, a less positive P2 component, and a less negative N400 component. Thus, contextual congruity of synaesthetically induced colors altered the brain response to achromatic graphemes beginning 100 ms postonset, affecting pattern-recognition, perceptual, and meaning-integration processes. The results suggest that grapheme-color synaesthesia is automatic and perceptual in nature and also suggest that the connections between colors and numbers are bidirectional. (shrink)

The publication of Darwin's On the Origin of Species in 1859 ignited a public storm he neither wanted nor enjoyed. Having offered his book as a contribution to science, Darwin discovered to his dismay that it was received as an affront by many scientists and as a sacrilege by clergy and Christian citizens. To answer the criticism that his theory was a theory only, and a wild one at that, he published two volumes in 1868 to demonstrate that evolution was (...) obvious to anyone who cared to look at a bull in a pasture or a dog on a hearth. In response to those who insisted that species were distinct since creation, Darwin pointed to breeders of pigs and pigeons. In reply to those who protested that human intervention is one thing and natural selection another, he argued, "If organic beings had not possessed an inherent tendency to vary, man could have done nothing." To counter those who scorned his descriptions of species in exotic places, he submitted local evidence of cabbages and cauliflower. Based on a wide array of sources, from ancient pictographs to Polish roosters, from skins and from skeletons, from scientific journals and breeding manuals, Darwin assembled a mass of proof--and a hypothesis about species reversion that risked his reputation anew. The Variation of Animals and Plants under Domestication is a two-volume compilation of his thorough and intensive research and the revolutionary conclusions that resulted. The first portion of his work is dedicated to a meticulous analysis of various aspects of plant and animal life, including an inventory of varieties and their physical and behavioral characteristics, investigation of the impact of a species' surrounding environment and the role that both natural and forced changes in this environment have had. Darwin then turns to a richly detailed discussion of the roles of inheritance and crossing in the development of species. A wealth of illustrations further support and enhance his findings. This fascinating, invaluable, and courageous undertaking eventually formed the foundation for our current understanding of evolution. "In science as in politics the victors tend to write the history books. As a result, the record of the past is edited, intentionally or unintentionally, so that it focuses mainly on the precursors of contemporary orthodoxy. Such a focus may accurately represent the genealogy of modern ideas, but it almost inevitably misrepresents the historical experience of their progenitors... Even the powerful, persuasive, and ultimately triumphant theory of evolution by natural selection required not only defense, but repeated buttressing and revision. Variation showed Darwin hard at work on this rearguard action, using the materials he had at hand... His information was gleaned from the observations of fanciers, breeders, and amateur naturalists, as well as from the treatises of those on the cutting edge of zoology and botany. As hindsight narrows the historical spotlight, it imposes its own sense of hierarchy on the preoccupations of the past. But Darwin was interested in all of these topics, valued all of these sources, and belonged, to a greater or lesser extent, to all of these communities."--from the Introduction. (shrink)

Synesthetes can be distinguished from nonsynesthetes on a variety of experimental tasks because their concurrent synesthetic experiences can affect task performance if these experiences match or conflict with some aspect of the stimulus. Here, we tested grapheme‐color synesthetes and nonsynesthetic control participants using a novel perceptual similarity task to assess whether synesthetes’ concurrent color experiences influence perceived grapheme similarity. Participants iteratively arranged graphemes and, separately, their associated synesthetic colors in a display, such that similar items were placed close together and (...) dissimilar items further apart. The resulting relative inter‐item distances were used to calculate the pair‐wise (dis)similarity between items in the set, and thence to create separate perceptual representational dissimilarity matrices (RDMs) for graphemes and colors, on an individual basis. On the assumption that synesthetes’ similarity judgments for graphemes would be influenced by their concurrent color experiences, we predicted that grapheme and color RDMs would be more strongly correlated for synesthetes than nonsynesthetes. We found that the mean grapheme‐color RDM correlation was indeed significantly higher in synesthetes than nonsynesthetes; in addition, synesthetes’ grapheme‐color RDM correlations were more likely to be individually statistically significant, even after correction for multiple tests, than those of nonsynesthetes. Importantly, synesthetes’ grapheme‐color RDM correlations scaled with the consistency of their grapheme‐color associations as measured by their Synesthesia Battery (SB) scores. By contrast, the relationship between SB scores and grapheme‐color RDM correlations for nonsynesthetes was not significant. Thus, dissimilarity analysis quantitatively distinguished synesthetes from nonsynesthetes, in a way that meaningfully reflects a key aspect of synesthetic experience. (shrink)

Bringing together leading scholars from across the world, this is a comprehensive survey of the latest phenomenological research into the perennial philosophical problem of ‘truth'.Starting with an historical introduction chronicling the variations on truth at play in the Phenomenological tradition, the book explores how Husserl's methodology equips us with the tools to thoroughly explore notions of truth, reality and knowledge. From these foundations, the book goes on to explore and extend the range of approaches that contemporary phenomenological research opens up (...) in the face of the most profound ontological and epistemological questions raised by the tradition. In the final section, the authors go further still and explore how phenomenology relates to other variations on truth offered up by hermeneutic, deconstructive and narrative approaches.Across the 12 essays collected in this volume, Variations on Truth explores and maps a comprehensive and rigorous alternative to mainstream analytic discussions of truth, reality and understanding. (shrink)

I use an old challenge to motivate a new view. The old challenge is due to variation in our perceptions of secondary qualities. The challenge is to say whose perceptions are accurate. The new view is about how we manage to perceive secondary qualities, and thus manage to perceive them accurately or inaccurately. I call it perceptual structuralism. I first introduce the challenge and point out drawbacks with traditional responses. I spend the rest of the paper motivating and defending (...) a structuralist response. While I focus on color, both the challenge and the view generalize to the other secondary qualities. (shrink)

In evolutionary biology, niche construction is sometimes described as a genuine evolutionary process whereby organisms, through their activities and regulatory mechanisms, modify their environment such as to steer their own evolutionary trajectory, and that of other species. There is ongoing debate, however, on the extent to which niche construction ought to be considered a bona fide evolutionary force, on a par with natural selection. Recent formulations of the variational free-energy principle as applied to the life sciences describe the properties of (...) living systems, and their selection in evolution, in terms of variational inference. We argue that niche construction can be described using a variational approach. We propose new arguments to support the niche construction perspective, and to extend the variational approach to niche construction to current perspectives in various scientific fields. (shrink)

It is often assumed that graphemes are a crucial level of orthographic representation above letters. Current connectionist models of reading, however, do not address how the mapping from letters to graphemes is learned. One major challenge for computational modeling is therefore developing a model that learns this mapping and can assign the graphemes to linguistically meaningful categories such as the onset, vowel, and coda of a syllable. Here, we present a model that learns to do this in English for strings (...) of any letter length and any number of syllables. The model is evaluated on error rates and further validated on the results of a behavioral experiment designed to examine ambiguities in the processing of graphemes. The results show that the model (a) chooses graphemes from letter strings with a high level of accuracy, even when trained on only a small portion of the English lexicon; (b) chooses a similar set of graphemes as people do in situations where different graphemes can potentially be selected; (c) predicts orthographic effects on segmentation which are found in human data; and (d) can be readily integrated into a full-blown model of multi-syllabic reading aloud such as CDP++ (Perry, Ziegler, & Zorzi, 2010). Altogether, these results suggest that the model provides a plausible hypothesis for the kind of computations that underlie the use of graphemes in skilled reading. (shrink)

The phenomenon of synesthesia has undergone an invigoration of research interest and empirical progress over the past decade. Studies investigating the cognitive mechanisms underlying synesthesia have yielded insight into neural processes behind such cognitive operations as attention, memory, spatial phenomenology and inter-modal processes. However, the structural and functional mechanisms underlying synesthesia still remain contentious and hypothetical. The first section of the present paper reviews recent research on grapheme-color synesthesia, one of the most common forms of synesthesia, and addresses the ongoing (...) debate concerning the role of selective attention in eliciting synesthetic experience. Drawing on conclusions of the first half, the paper’s second half examines the various models proposed to explain the cognitive mechanisms behind grapheme-color synesthesia, and discusses the explanatory virtues of a new model suggesting that grapheme-color synesthesia is grounded in memory. The last section offers an examination of some of the broader philosophical implications of synesthesia. (shrink)

Une des caractéristiques de l’expérience morale immédiate est sa variabilité particulièrement intense, liée à la mobilité créatrice de ses données qui sont disposées en trois paliers de profondeur. On peut distinguer six aspects fondamentaux de ces variations : 1° variations des données en elles-mêmes ; 2° variations des actes qui les saisissent, indépendantes des variations des données ; 3° variations dans l’actualité des trois couches superposées des données ; 4° variations de l’équilibre mobile entre le mode collectif et le mode (...) individuel de l’expérience morale ; 5° variations dans les rapports entre les données sensibles et les données spirituelles de cette expérience ; 6° variations dans les conjonctions entre les actes de l’expé- îience morale et les intuitions émotives. Ces divers aspects de variétés de l’expérience morale, tout en faisant nettement ressortir l’impossibilité et le vide des métamcrales classiques, détachées d’une liaison étroite avec la science des moeurs, révèlent en même temps la nécessité et les tâches effectives de la morale théorique. Seule, celle-ci peut reconduire par ses analyses vers le vécu immédiat dans ses différents paliers et seule elle est capable de vérifier l’objectivité de ces données infiniment variables et mobiles par leur intégration dans des ensembles infinis. (shrink)

The Hubbard model is studied at half filling, using two complementary variational wave functions, the Gutzwiller ansatz for the metallic phase at small values of the interaction parameter U and its analog for the insulating phase at large values of U. The metallic phase is characterized by the Drude weight, which exhibits a jump at the critical point Uc. In the insulating phase the system behaves as a collection of dipoles which increase both in number and in size as U (...) gets smaller. The two wave functions are able to describe the two asymptotic regimes (small and large values of U, respectively), but they can no longer be trusted in the region of the Mott transition (U≈Uc). More powerful methods are needed to study, for instance, the divergence of the electric susceptibility for U→Uc. (shrink)

Although societies and health care systems are increasingly recognizing gender outside traditional binary categories, the notion persists of two, and only two sexes, ‘naturally’ aligned between chromosomes and phenotypic body. Yet there are more than a dozen documented genetic or phenotypic variations that do not completely fit the two simplistic categories, and together, they may comprise 1%–2% of the population worldwide. In this commentary, I consider how adherence to binary notions of sex has created and maintained social and health care (...) structures that perpetuate health care inequities, and may well violate our nursing codes of ethics. I provide some current examples in law and health care systems that create difficulties for people with variations in sex development. I describe our responsibility to challenge the societally promoted but scientifically inaccurate perspective of sex as a binary. I conclude by briefly suggesting a few implications for action within nursing research, nursing education, nursing practice, and in advocacy as a profession. (shrink)

According to Smell Objectivism, the smells we perceive in olfactory experience are objective and independent of perceivers, their experiences, and their perceptual systems. Variations in how things smell to different perceivers or in different contexts raise a challenge to this view. In this paper, I offer an objectivist account of non-illusory contextual variation: cases where the same thing smells different in different contexts of perception and there is no good reason to appeal to misperception. My central example is that (...) of dihydromyrcenol, a substance that can smell both woody and citrusy depending on what other odourants one has recently been exposed to. I first argue that the subjects’ apparently conflicting reports about the way dihydromyrcenol smells are best understood as comparative characterisations of a smell. Given this understanding, different reports can be correctly made in response to perceiving the very same smell. I then argue that the phenomenal difference between the experiences subjects have across contexts can be explained compatibly with Smell Objectivism. On the account proposed, subjects perceive the very same smell but different qualities, notes, or aspects of it are salient to them, depending on the context of perception. I then consider how the proposed defence of Smell Objectivism can be adapted to other cases where the same thing is reported as smelling different in different contexts. (shrink)

The use of recent research on variations in medical practice to promote competitive market oriented cost containment strategies is critically examined. Research demonstrating widespread variations in physician practices for similar patient populations undermines the medical profession's claims about the scientific objectivity of medical practice and indicates the existence of widespread waste and inappropriate utilization of health care resources. Cost containment programs which rely on market-based care avoidance incentives, such as Medicare prospective payment or cost sharing plans, attempt to impact medical (...) practice variations by creating economic barriers between doctor and patient. An alternative interpretation of research on practice variations is presented, emphasizing containing costs while improving quality of care and achieving greater equity through planning and regulation of medical supply factors. (shrink)

There is variation in how people perceive colors and other secondary qualities. The challenge of perceptual variation is to say whose perceptions are accurate. A natural and influential response is that, whenever there’s variation in two people’s perceptions, at most one of their perceptions is accurate. I will argue that this leads to an unacceptable kind of ignorance.

In this book, leading scholars consider the ways in which syntactic variation can be accounted for in a minimalist framework. They explore the theoretical significance, content, and role of parameters; whether or not variation should be strongly or weakly accounted for by syntactic factors; and the explicitness - or lack thereof - should be assumed with respect to the conditions imposed by narrow syntax.

In this paper, I argue that the ‘social meanings’ associated with sociolinguistic variation put pressure on the standard philosophical conception of language, according to which the foremost thing we do with words is exchange information. Drawing on parallels with the explanatory challenge posed by slurs and pejoratives, I argue that the best way to understand social meanings is to think of them in speech act theoretic terms. I develop a distinctive form of pluralism about the performances realized by means (...) of sociolinguistic variants, and I claim that engagement with such performances is an utterly pervasive feature of our linguistic activity. (shrink)

Many philosophers have been attracted by the view that colors are mind-independent properties of object surfaces. While this view has come in for a fair bit of criticism for failing to do justice to the facts about perceptual variation, Byrne and Hilbert have recently argued that perceptual variation involving color is no more problematic for physicalism about color than representational variation involving temperature is for physicalism about temperature. Unfortunately, the analogy on which this response rests is no (...) less controversial than the disputed view about color, and so the response leads to a standoff rather than a resolution of the debate. However, we can appeal to facts about our inferential treatment of color and other properties as a way of resolving this impasse; doing so gives us defeasible reason for rejecting the Byrne and Hilbert response, and so for rejecting their mind-independent conception of color. (shrink)

Corpus surveys have shown that the exact forms with which idioms are realized are subject to variation. We report a rating experiment showing that such alternative realizations have varying degrees of acceptability. Idiom variation challenges processing theories associating idioms with fixed multi-word form units, fixed configurations of words, or fixed superlemmas, as they do not explain how it can be that speakers produce variant forms that listeners can still make sense of. A computational model simulating comprehension with naive (...) discriminative learning is introduced that provides an explanation for the different degrees of acceptability of several idiom variant types. Implications for multi-word units in general are discussed. (shrink)

Pour les enfants issus de familles itinérantes et de voyageurs, le français est une langue-culture seconde, voire étrangère. Devant l’analphabétisme et l’illettrisme de masse, ainsi que le faible taux de scolarisation des EFIV, l’insertion socioculturelle des communautés désignées sous l’appellation administrative de « gens du voyage » est primordiale. Les langues-cultures des « gens du voyage » étant principalement de transmission orale, l’utilisation de gestes manuels et de comptines à gestes comme supports de l’enseignement/apprentissage du français semble particulièrement pertinent. Un (...) autre argument en faveur de l’utilisation de ces supports auprès d’EFIV est que la communication non-verbale fait partie intégrante du langage et qu’elle favoriserait la compréhension et la production langagière, notamment pour l’apprentissage de la prosodie et de la phonologie. Au vu de ces éléments, des comptines à gestes ont été créées afin de permettre l’enseignement/apprentissage de la perception et de la production des phonèmes du français, ainsi que la correspondance entre phonèmes et graphèmes. Ces supports pédagogiques ont été testés au sein de l’association Ballade auprès d’EFIV, et leur impact a été analysé afin de permettre une réévaluation des propositions didactiques. (shrink)

Determining the nature of binding in grapheme-color synaesthesia has consequences for understanding the neural basis of synaesthesia and visual awareness in general. We evaluated type- and token-based letter-color binding using a synaesthetic version of the object-reviewing paradigm. Although mean response times failed to reveal any significant differences between synaesthetes and control participants, RT analyses with ex-Gaussian distributions revealed that the response facilitation in the synaesthesia group reflected type representations exclusively, while response facilitation in the control group, who learned letter-color associations, (...) was dominated by token representations. Thus, letter-color associations in associator synaesthetes are type-based, and do not involve binding to object tokens, consistent with their subjective reports. Contrary to recent studies that failed to find differences between synaesthetes and non-synaesthetes with behavioral measures, response time distribution analyses indicate that color sensations in synaesthetes are not simply the extreme form of normal letter-color associations, and cannot be attributed to demand characteristics. (shrink)

The process of antigenic variation in parasitic African trypanosomes is a remarkable mechanism for outwitting the immune system of the mammalian host, but it requires a delicate balancing act for the monoallelic expression, folding and transport of a single variant surface glycoprotein (VSG). Only one of hundreds of VSG genes is expressed at time, and this from just one of ≈15 dedicated expression sites. By switching expression of VSGs the parasite presents a continuously shifting antigenic facade leading to prolonged (...) chronic infections lasting months to years. The basics of VSG structure and switching have been known for several decades, but recent studies have brought higher resolution to many aspects this process. New VSG structures, in silico modeling of infections, studies of VSG codon usage, and experimental ablation of VSG expression provide insights that inform how this remarkable system may have evolved. (shrink)

One important question in emotion science is determining what emotions there are. To answer this question, researchers have assumed either that folk emotion concepts are unsuitable for scientific inquiry, or that they are constitutive or explanatorily significant for emotion research. Either option faces a challenge from the cultural variability of folk emotion concepts, prompting debate on the universality of emotions. I contend that cultural variation in emotion should be construed as variations in components rather than entire emotional repertoires. To (...) do this, I distinguish between hypotheses concerning emotional repertoires and those focused on specific emotional features within various cultural contexts. I hold that decisions regarding emotional repertoire hypotheses call for either revising current classification systems or maintaining them, but that, given underdetermination by evidence, this entails a preference for maintaining emotion taxonomies. This, in turn, leaves empirical hypotheses on specific emotional features as the most viable avenue for scientific inquiry. (shrink)

There is a growing appreciation of the extent of transcriptome variation across individual cells of the same cell type. While expression variation may be a byproduct of, for example, dynamic or homeostatic processes, here we consider whether single‐cell molecular variation per se might be crucial for population‐level function. Under this hypothesis, molecular variation indicates a diversity of hidden functional capacities within an ensemble of “identical” cells, and this functional diversity facilitates collective behavior that would be inaccessible (...) to a homogenous population. In reviewing this topic, we explore possible functions that might be carried by a heterogeneous ensemble of cells; however, this question has proven difficult to test, both because methods to manipulate molecular variation are limited and because it is complicated to define, and measure, population‐level function. We consider several possible methods to further pursue the hypothesis that “variation is function” through the use of comparative analysis and novel experimental techniques. (shrink)

How should we understand postphenomenological methodology? Postphenomenology is a research perspective which builds on phenomenological and pragmatist philosophy to explore human–technology relations, but one with open methodological questions. Here, I offer some thoughts on the epistemological processes that should be (and often implicitly may be) at work in this research. In particular, I am concerned with postphenomenological research on technological “multistability,” i.e., a device’s ever-present capacity to be used for a variety of purposes, and to always be meaningful in multiple (...) ways. I develop a methodology called “variational cross-examination,” which entails the critical contrast of a device’s various stabilities. As a set of instructive examples, I draw on my own line of research on the politics of public spaces, and especially the critique of anti-homeless design. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Rethinking Variations of Musical MeaningfulnessAnneli ArhoAs a curious mind, I am able to focus on new kinds of topics, to research unknown practices; I am able to explore different cultures, interesting customs of making music, or I may trace various ways of musical thinking. It is wonderful to be able to enrich and transform my understanding of the musical world. [End Page 55]As a lived body,1 I have grown (...) up in the Western music tradition.2 This is my culture. This is the tradition I know as a composer, as a player of an instrument, as a teacher, as a researcher. Living in this culture has given me an embodied understanding of music. This understanding provides me with a meaningful background whenever I sense (hear, see, feel with my body's movements, read, fancy, and speak, write, or read about) music. I know this music in myself.As a musician, I have often been puzzled—even annoyed—that the tradition of writing about music favors descriptions and contemplations which I, as a musician, often find misleading and distorted. It has taken me a long time to realize two things: (1) the professional writers within various discourses create their own kinds of musical meaningfulness that are often interesting in themselves, and (2) in order to really share that kind of meaningfulness, I would have had to grow up within the discourse through which that meaningfulness evolved or was constructed.As a researcher, therefore, I have chosen to ground my research in my lived body, in the musicianship constituted through my experiences in making music. I am interested in phenomena of the lived world—as they are lived through and understood when making music.3 I am interested in different practices and divergent ways of regulating and guiding the making of music. I am interested in habitual ways of speaking about music, common ways of manual and mental training and rehearsing, and in different ways of teaching, supervising, and coaching. For me, all these reveal the phenomenon of music in our culture.My Living with Music—A Field of Musical MeaningfulnessAs a composer, I sometimes work with children and young people, and with their instrumental teachers. I have just started a three-year project in a music school, working each year with a new group of players. In 2004, I conducted a pilot project with recorder players. This year it will be the violin players; next year I may work with the piano players. There are many possibilities for the third year: the head of the school will have a hard job choosing a group from among the several enthusiastic candidates.I have enjoyed the open-mindedness of the children and of the volunteer teachers, too. Learning to play with music—learning to handle, vary, and transform, to compose, decompose, and recompose musical fragments, pieces, or sequences—may be as natural as any playing. Intertwining play, variation, and imitation seems to be an essential part of living and learning.But, I have also had to confront entrenched mythical conceptions of what it means to compose music, and curricula based on those conceptions.4 In my mind, composing cannot be regarded as a phenomenon that could simply be included in a curriculum. In practice, composing may refer to a variety of ways [End Page 56] of making music that are not always easy to tell apart from other culturally named phenomena, like playing, singing, improvising, or writing music.5 For me, composing simply refers to certain ways I live with music: several different ways of dealing with music, different kinds of activities, makings and doings, special states of mind, and special ways of using my embodied knowledge of music. Thus, composing refers to an individual and invisible6 background, an embodied perspective, a way of being, which shows me a certain variety of musical phenomena and their qualities, and conceals some others. Composing, like all arts of making and doing, generates its own practical and existential questions, which often are not an issue for those who do not compose. An outsider never really grasps the situation of a practitioner.Culturally bound ways of making music are being redefined... (shrink)

Sir Geoffrey Lloyd presents a cross-disciplinary exploration of the unity and diversity of the human mind. He discusses cultural variations with regard to ideas of colour, emotion, health, the self, agency and causation, reasoning, and other fundamental aspects of human cognition. He draws together scientific, philosophical, anthropological, and historical arguments in showing how our evident psychic diversity can be reconciled with our shared humanity.

Colour variation is the fact that what colour physical objects look to have depends on viewing conditions and a perceiver’s visual system. Both Colour Relationalists and Colour Eliminativists regard their analyses of colour variation as central to the justification for their respective views. Yet the analyses are decidedly different. Colour Relationalists assert that most instances of colour variation are veridical and infer from this that colours are relational properties of objects that are partly determined by perceivers. By (...) contrast, Colour Eliminativists assert that colour variation is too unsystematic to ground the claim that many or most instances of colour variation are veridical. From this they infer that objects don’t have colours. I argue that the Eliminativist analysis is superior. On my view, the Relationalist account of veridical colour experience reduces to the assertion that objects have colour simply because they cause perceivers to have colour experiences of them. In this context, I argue, the resulting conception of veridicality is vacuous. More directly, the foundational idea of Eliminativism is the opposite claim: the fact that objects cause perceivers to have colour experiences of them is on its own not sufficient to justify or ground the claim that objects have colour. The Relationalist, I argue, has failed to justify anything stronger than this. In this debate we should thus side with the Eliminativist: objects do not possess colour; they merely cause us to undergo colour experiences. (shrink)

There is variation in how people perceive colors and other secondary qualities. The challenge of perceptual variation is to say whose perceptions are accurate. According to Sextus, Protagoras’ response is that all of our perceptions might be accurate. As this response is traditionally developed, it is difficult to explain color illusion and color constancy. This difficulty is due to a widespread assumption called perceptual atomism. This chapter argues that, if we want to develop Protagoras’ response, we need to (...) give up perceptual atomism. It ends with a brief sketch of an alternative called perceptual structuralism. (shrink)

I offer a new objectivist theory of the contents of color language and color experience, intended especially as an account of what normal intersubjective variation in color perception and classification shows about those contents. First I explain an abstract account of the contents of color and other gradable adjectives; on the account, these contents are certain objective properties constituted in part by contextually intended standards of application, which are in turn values in the dimensions of variation associated with (...) the adjectives. Then I propose an explanation of normal variations in linguistic color classification; these are postulated to be effects of differences in intended standards for the color adjectives appearing in the classifying predicates. Next, I consider a potential objection to this explanation, based on the suggestion that contextual content should be more accessible than the explanation predicts. In reply, I point out that contextual content is occasionally opaque to unsophisticated reflection. Finally, I present a companion account of the contents of color experiences on which these represent an object as lying on certain salient intervals in the chromatic dimensions, and I show how the account accommodates intersubjective variation in color perception. (shrink)

Despite its status at the heart of a closely related field, philosophers have so far mostly overlooked a phenomenon sociolinguists call ‘social meaning’. My aim in this paper will be to show that by properly acknowledging the significance of social meanings, we can identify an important new set of forms that discursive injustice takes. I begin by surveying some data from variationist sociolinguistics that reveal how subtle differences in the way a particular content is expressed allow us to perform importantly (...) different illocutionary actions, actions we use to do things like constructing a public persona and building a rapport with an audience. The social importance of these activities and the pervasiveness of our engagement in them means that the ethical stakes involved are high—substantial injustices may result if speakers from different social groups are differently empowered with regard to the illocutionary possibilities made available to them by variation. (shrink)

Concentrating upon applications that are most relevant to modern physics, this valuable book surveys variational principles and examines their relationship to dynamics and quantum theory. Stressing the history and theory of these mathematical concepts rather than the mechanics, the authors provide many insights into the development of quantum mechanics and present much hard-to-find material in a remarkably lucid, compact form. After summarizing the historical background from Pythagoras to Francis Bacon, Professors Yourgrau and Mandelstram cover Fermat's principle of least time, the (...) principle of least action of Maupertuis, development of this principle by Euler and Lagrange, and the equations of Lagrange and Hamilton. Equipped by this thorough preparation to treat variational principles in general, they proceed to derive Hamilton's principle, the Hamilton-Jacobi equation, and Hamilton's canonical equations. An investigation of electrodynamics in Hamiltonian form covers next, followed by a resume of variational principles in classical dynamics. The authors then launch into an analysis of their most significant topics: the relation between variational principles and wave mechanics, and the principles of Feynman and Schwinger in quantum mechanics. Two concluding chapters extend the discussion to hydrodynamics and natural philosophy. Professional physicists, mathematicians, and advanced students with a strong mathematical background will find this stimulating volume invaluable reading. Extremely popular in its hardcover edition, this volume will find even wider appreciation in its first fine inexpensive paperbound edition. (shrink)

Experimental philosophers often seem to ignore or downplay the significance of demographic variation in philosophically relevant judgments. This article confirms this impression, discusses why demographic research is overlooked in experimental philosophy, and argues that variation is philosophically significant.