Healey et al. use experiments with chat dialogues to test the hypothesis that language co‐ordination is driven by ‘running repairs’. They replace signals of understanding such as “okay” with weaker, ‘spoof’ signals like “ummm”, and replace specific requests for clarification like “on the left?” with signals that suggest a higher degree of misunderstanding like “what?”. The latter manipulation causes participants to switch rapidly to more abstract forms of referring expression.

The emergence of shared symbol systems is considered to be a pivotal moment in human evolution and human development. These changes are normally explained by reference to changes in people's internal cognitive processes. We present 2 experiments which provide evidence that changes in the external, collaborative processes that people use to communicate can also affect the structure and organization of symbol systems independently of cognitive change. We propose that mutual‐modifiability—opportunities for people to edit or manipulate each other's contributions—is a key (...) constraint on the emergence of complex symbol systems. We discuss the implications for models of language development and the origins of compositionality. (shrink)

McCabe & Healey argue that in patient‐psychiatrist interaction, the more the participants engage in repair, i.e., trying to fix potential misunderstandings, the better the outcomes of the interaction, as measured by treatment adherence and the quality of the Dr – patient relationship. This holds both for self‐repair, when psychiatrists fix their own utterances, as well as other‐repair, where patients try to fix the understanding displayed by the psychiatrist.

Healey et al. introduce the special issue with a brief overview of work on communication in the Cognitive Sciences and some of the historical and conceptual influences that have marginalized the study of miscommunication. Drawing on more recent work in Cognitive Science and Conversation Analysis they argue that miscommunication is in fact a highly structured, ubiquitous phenomenon that is fundamental to human interaction.

Anecdotal evidence suggests that participants in conversation can sometimes act as a coalition. This implies a level of conversational organization in which groups of individuals form a coherent unit. This paper investigates the implications of this phenomenon for psycholinguistic and semantic models of shared context in dialog. We present a corpus study of multiparty dialog which shows that, in certain circumstances, people with different levels of overt involvement in a conversation, that is, one responding and one not, can nonetheless access (...) the same shared context. We argue that contemporary models of shared context need to be adapted to capture this situation. To address this, we propose “grounding by proxy,” in which one person can respond on behalf of another, as a simple mechanism by which shared context can accumulate for a coalition as a whole. We explore this hypothesis experimentally by investigating how people in a task-oriented coalition respond when their shared context appears to be weakened. The results provide evidence that, by default, coalition members act on each other's behalf, and when this fails they work to compensate. We conclude that this points to the need for a new concept of collective grounding acts and a corresponding concept of collective contexts in psycholinguistic and semantic models of dialog. (shrink)

3 In live performances seated audiences have restricted opportunities for response. Some 4 responses are obvious, such as applause and cheering, but there are also many apparently 5 incidental movements including posture shifts, fixing hair, scratching and adjusting glasses. 6 Do these movements provide clues to people’s level of engagement with a performance? Our 7 basic hypothesis is that audience responses are part of a bi-directional system of audience- 8 performer communication. This communication is part of what distinguishes live from (...) recorded 9 performance and underpins live performers’ moment-to-moment sense of how well a performance 10 is going. Here we investigate the range of visible real-time movements of audiences in four live 11 contemporary dance performances. Video recordings of performers and audiences were analysed 12 using computer vision techniques for extracting face, hand and body movement data. The 13 meaning of audience movements were analysed by comparing clips of the audience at moments 14 of maximum and minimum movement to expert and novice judges. The results show that audience 15 clips with the lowest overall movement are judged as displaying the highest engagement. In 16 addition, we found that while there is no systematic relationship between audience and dancers 17 movement, hands seem to play an especially significant role since they move significantly more 18 compared to the rest of the body. We draw on these findings to argue that collective stillness is 19 an especially salient signal of audience engagement. (shrink)

Social robots have limited social competences. This leads us to view them as depictions of social agents rather than actual social agents. However, people also have limited social competences. We argue that all social interaction involves the depiction of social roles and that they originate in, and are defined by, their function in accounting for failures of social competence.

Empirical evidence from dialogue, both corpus and experimental, highlights the importance of interaction in language use – and this raises some questions for Christiansen & Chater's proposals. We endorse C&C's call for an integrated framework but argue that their emphasis on local, individual production and comprehension makes it difficult to accommodate the ubiquitous, interactive, and defeasible processes of clarification and repair in conversation.

The interactive alignment model treats within- and between-individual co-ordination as essentially equivalent. It is argued that this leads to a conservative account of alignment that presupposes high levels of linguistic and conceptual co-ordination. Data from the maze task are used to argue that this approach is not sufficient to account for important co-ordination phenomena.

This is one of the most important books on quantum mechanics to have appeared in recent years. It offers a dramatically new interpretation that resolves puzzles and paradoxes associated with the measurement problem and the behavior of coupled systems. A crucial feature of this interpretation is that a quantum mechanical measurement can be certain to have a particular outcome even when the observed system fails to have the property corresponding to that outcome just prior to the measurement interaction.

According to conventional wisdom, local gauge symmetry is not a symmetry of nature, but an artifact of how our theories represent nature. But a study of the so-called theta-vacuum appears to refute this view. The ground state of a quantized non-Abelian Yang-Mills gauge theory is characterized by a real-valued, dimensionless parameter theta—a fundamental new constant of nature. The structure of this vacuum state is often said to arise from a degeneracy of the vacuum of the corresponding classical theory, which degeneracy (...) allegedly arises from the fact that “large” (but not “small”) local gauge transformations connect physically distinct states of zero field energy. If that is right, then some local gauge transformations do generate empirical symmetries. In defending conventional wisdom against this challenge I hope to clarify the meaning of empirical symmetry while deepening our understanding of gauge transformations. I distinguish empirical from theoretical symmetries. Using Galileo’s ship and Faraday’s cube as illustrations, I say when an empirical symmetry is implied by a theoretical symmetry. I explain how the theta-vacuum arises, and how “large” gauge transformations differ from “small” ones. I then present two analogies from elementary quantum mechanics. By applying my analysis of the relation between empirical and theoretical symmetries, I show which analogy faithfully portrays the character of the vacuum state of a classical non-Abelian Yang-Mills gauge theory. The upshot is that “large” as well as “small” gauge transformations are purely formal symmetries of non-Abelian Yang-Mills gauge theories, whether classical or quantized. It is still worth distinguishing between these kinds of symmetries. An analysis of gauge within the constrained-Hamiltonian formalism yields the result that “large” gauge transformations should not be classified as gauge transformations; indeed, nor should “global” gauge transformations. In a theory in which boundary conditions are modeled dynamically, “global” gauge transformations may be associated with physical symmetries, corresponding to translations of these extra dynamical variables. Such translations are symmetries if and only if charge is conserved. But it is hard to argue that these symmetries are empirical, and in any case they do not correspond to any constant phase change in a quantum state. (shrink)

Combating Hatred provides several practical case studies of teachers, administrators, and school board members who have successfully combated intolerance, prejudice, and hatred in their schools. Furin details innovative ways used in the case studies to create communities that sought the highest social justice values of respect and equality for everyone.

This commentary provides a brief overview of the methods and results presented by Jennifer Kuzma, Pouya Najmaie, and Joel Larson in “Evaluating Oversight Systems for Emerging Technologies: A Case Study of Genetically Engineered Organisms.” It offers suggestions regarding how supplemental information might be used to gain additional insights into the authors' results and how future research could further enhance our understanding of the attributes and outcomes of regulatory oversight for genetically engineered organisms.

Although the relations between second formant (F2) onset and F2 vowel are extremely regular and contain important information about place of articulation of the voiced stops, they are not sufficient for its identification. Using quadratic discriminant analysis of a new data set, it is shown that F3 onset and F3 vowel can also contribute substantial additional information to help identify the consonants.

As a proponent of phoneme-like units in speech perception, I am very sympathetic to Merge's use of phoneme-oriented input. However, in the absence of any known way to provide input in exactly the form assumed, further consideration needs to be given to how the variation in the details of the specification of this input might affect Merge's (and Shortlist's) overall behavior.

Although estrogens are widely considered circulating “sex steroid hormones” typically associated with female reproduction, recent evidence suggests that estrogens can act as local modulators of brain circuits in both males and females. The functional implications of this newly characterized estrogen signaling system have begun to emerge. This essay summarizes evidence in support of the hypothesis that the rapid production of estrogens in brain circuits can drive acute changes in both the production and perception of acoustic communication behaviors. These studies have (...) revealed two fundamental neurobiological concepts: (1) estrogens can be locally produced in brain circuits, independent of levels in nearby circuits and in the circulation and (2) estrogens can have very rapid effects within these brain circuits to modulate social vocalizations, acoustic processing, and sensorimotor integration. This vertebrate‐wide span of research, including vocalizing fishes, amphibians, and birds, emphasizes the importance of comparative model systems in understanding principles of neurobiology. (shrink)

Habits of Whiteness offers a new way to talk about race and racism by focusing on racial habits and how to change them. According to Terrance MacMullan, the concept of racial whiteness has undermined attempts to create a truly democratic society in the United States. By getting to the core of the racism that lives on in unrecognized habits, MacMullan argues clearly and charitably for white folk to recognize the distance between their color-blind ideals and their actual behavior. Revitalizing (...) the work of W. E. B. Du Bois and John Dewey, MacMullan shows how it is possible to reconstruct racial habits and close the gap between people. This forthright and persuasive analysis of the impulses of whiteness ultimately reorganizes them into something more compatible with our country's increasingly multicultural heritage. (shrink)

Bernard Lonergan identified the need and possibility of what he called "generalized empirical method" in science and philosophy. Implementation will be a future community achievement. The book enters into details of a selection of examples in the sciences and philosophy of science. These are provided not to engage in, or blend the present aim with traditional philosophical debate, but as points of entry to help reveal the possibility and need of balanced empirical method. Taking words of Lonergan: "(Q)uestions of method (...) are practical. So my purpose in these (chapters) is not to demonstrate what is necessary. It is not to forecast what is probable. It is... to invite you to share in the exploration of a proposal" (Bernard Lonergan, A Third Collection (1985), 114). The main examples are drawn from biochemistry and biology, although heuristics envisioned will include all sciences. (shrink)

The vitality of mathematics, however, “is conditioned upon the connection of its parts.” What, however, are the “parts” and “connections”? Is there, perhaps, some general pattern to this ongoing enterprise? In other words, is there some recognisable order to the mathematical project, not as in something to be imposed, but an order that can be verified in actual works and collaborations? A main purpose of this paper is to offer an answer to this question in the affirmative. For there is (...) accumulating evidence for the existence of an eight-fold periodic sequence of functionally related zones of enquiry H1, … , H8 – where for the rest of this paper these zones will be called functional specialties. In particular, each functional specialty would seem to have its own main objective and to involve its own differentiated type of enquiry. (shrink)

In modern physics, various fundamental problems have become topics of debate. There was the 20th century climb to a Standard Model, still accurate at the highest energy levels obtainable so far. But, since the 1970's, a different approach to physics advocates for theories such as string theory, known for their mathematical elegance, even though they either cannot be verified in data or contradict presently known experimental results. In philosophy of physics, there is a gradually emerging consensus that philosophy of physics (...) and physics somehow contribute to a common enterprise. But, there is little sign of progress toward consensus about the nature of that unity. All the while, it is generally recognized that physics is interdisciplinary. There are, of course, differences in focus. But, implicitly at least, there are no "sharp dividing lines" between physics and philosophy of physics; pure and applied physics; physical chemistry; biophysics; medical physics; history and philosophy of physics; physics and society; physics education; and so on. What, then, is progress in physics? The question here is not about ideal structures, but asks about what is going on in physics. Beginnings in discerning the presence of eight main tasks help reveal the (pre-) emergence of a normative omni-disciplinary basis for collaboration that, once adverted to, promises to be constitutive of a new and increasingly effective control of meaning. Originally discovered by Bernard Lonergan in 1965, progress in the new collaboration will not seek to eliminate specialized expertise. It will, though, divide tasks within an eightfold functional division of labor. This book invites attention to data for each of the eight main tasks evident and self-evident in existing scholarship in the community. (shrink)

The Twin Paradox is not a new topic. What is new in this article is that it is an exercise toward interpretation that is functional, in the sense discovered by Lonergan in Method in Theology. The author being interpreted is P. Tipler; and the primary document is taken from his well known textbook. I try to lay out the basic argument in a way that reveals the operative insights, as well as the significant oversights. As it turns out, it would (...) seem that there is neither theoretical basis nor experimental evidence for the alleged “slowing of time” for the high speed traveler. (shrink)

We present empirical evidence from dialogue that challenges some of the key assumptions in the Pickering & Garrod (P&G) model of speaker-hearer coordination in dialogue. The P&G model also invokes an unnecessarily complex set of mechanisms. We show that a computational implementation, currently in development and based on a simpler model, can account for more of this type of dialogue data.