In order to understand ongoing activity, observers segment it into meaningful temporal parts. Segmentation can be based on bottom‐up processing of distinctive sensory characteristics, such as movement features. Segmentation may also be affected by top‐down effects of knowledge structures, including information about actors' intentions. Three experiments investigated the role of movement features and intentions in perceptual event segmentation, using simple animations. In all conditions, movement features significantly predicted where participants segmented. This relationship was stronger when participants identified larger units than (...) when they identified smaller units, and stronger when the animations were generated randomly than when they were generated by goal‐directed human activity. This pattern suggests that bottom‐up processing played an important role in segmentation of these stimuli, but that this was modulated by top‐down influence of knowledge structures. To describe accurately how observers perceive ongoing activity, one must account for the effects of distinctive sensory characteristics, the effects of knowledge structures, and their interactions. (shrink)

Much of our behavior is guided by our understanding of events. We perceive events when we observe the world unfolding around us, participate in events when we act on the world, simulate events that we hear or read about, and use our knowledge of events to solve problems. In this book, Gabriel A. Radvansky and Jeffrey M. Zacks provide the first integrated framework for event cognition and attempt to synthesize the available psychological and neuroscience data surrounding it. This (...) synthesis leads to new proposals about several traditional areas in psychology and neuroscience including perception, attention, language understanding, memory, and problem solving.Radvansky and Zacks have written this book with a diverse readership in mind. It is intended for a range of researchers working within cognitive science including psychology, neuroscience, computer science, philosophy, anthropology, and education. Readers curious about events more generally such as those working in literature, film theory, and history will also find it of interest. (shrink)

People tend to perceive ongoing continuous activity as series of discrete events. This partitioning of continuous activity may occur, in part, because events correspond to dynamic patterns that have recurred across different contexts. Recurring patterns may lead to reliable sequential dependencies in observers' experiences, which then can be used to guide perception. The current set of simulations investigated whether this statistical structure within events can be used 1) to develop stable internal representations that facilitate perception and 2) to learn when (...) to update such representations in a self-organizing manner. These simulations demonstrate that experience with recurring patterns enables a system to accurately predict upcoming stimuli within an event, to identify boundaries between such events based on transient increases in prediction error, and to use such boundaries to improve prediction about subsequent activities. (shrink)

The Theory of Event Coding deals with brief events but has implications for longer, complex events, particularly goal-directed activities. Two of the theory's central claims are consistent with or assumed by theories of complex events. However, the claim that event codes arise from the rapid activation and integration of features presents challenges for scaling up to larger events.

Filmmakers use continuity editing to engender a sense of situational continuity or discontinuity at editing boundaries. The goal of this study was to assess the impact of continuity editing on how people perceive the structure of events in a narrative film and to identify brain networks that are associated with the processing of different types of continuity editing boundaries. Participants viewed a commercially produced film and segmented it into meaningful events, while brain activity was recorded with functional magnetic resonance imaging (...) (MRI). We identified three degrees of continuity that can occur at editing locations: edits that are continuous in space, time, and action; edits that are discontinuous in space or time but continuous in action; and edits that are discontinuous in action as well as space or time. Discontinuities in action had the biggest impact on behavioral event segmentation, and discontinuities in space and time had minor effects. Edits were associated with large transient increases in early visual areas. Spatial-temporal changes and action changes produced strikingly different patterns of transient change, and they provided evidence that specialized mechanisms in higher order perceptual processing regions are engaged to maintain continuity of action in the face of spatiotemporal discontinuities. These results suggest that commercial film editing is shaped to support the comprehension of meaningful events that bridge breaks in low-level visual continuity, and even breaks in continuity of spatial and temporal location. (shrink)

Stawarczyk, Bezdek, and Zacks offer neuroscience evidence for a midline default network core, which appears to coordinate internal, top‐down mentation with externally‐triggered, bottom‐up attention in a push‐pull relationship. The network may enable the flexible pursuance of thoughts tuned into or detached from the current environment.

Event segmentation theory posits that people segment continuous experience into discrete events and that event boundaries occur when there are large transient increases in prediction error. Here, we set out to test this theory in the context of story listening, by using a deep learning language model (GPT‐2) to compute the predicted probability distribution of the next word, at each point in the story. For three stories, we used the probability distributions generated by GPT‐2 to compute the time series of (...) prediction error. We also asked participants to listen to these stories while marking event boundaries. We used regression models to relate the GPT‐2 measures to the human segmentation data. We found that event boundaries are associated with transient increases in Bayesian surprise but not with a simpler measure of prediction error (surprisal) that tracks, for each word in the story, how strongly that word was predicted at the previous time point. These results support the hypothesis that prediction error serves as a control mechanism governing event segmentation and point to important differences between operational definitions of prediction error. (shrink)

A wide-ranging history of the intellectual developments that produced the modern idea of the algorithm. Bringing together the histories of mathematics, computer science, and linguistic thought, Language and the Rise of the Algorithm reveals how recent developments in artificial intelligence are reopening an issue that troubled mathematicians long before the computer age. How do you draw the line between computational rules and the complexities of making systems comprehensible to people? Here Jeffrey M. Binder offers a compelling tour of four (...) visions of universal computation that addressed this issue in very different ways: G. W. Leibniz's calculus ratiocinator; a universal algebra scheme Nicolas de Condorcet designed during the French Revolution; George Boole's nineteenth-century logic system; and the early programming language ALGOL, whose name is short for algorithmic language. These episodes show that symbolic computation has repeatedly become entangled in debates about the nature of communication. To what extent can meaning be controlled by individuals, like the values of a and b in algebra, and to what extent is meaning inevitably social? By attending to this long-neglected question, we come to see that the modern idea of the algorithm is implicated in a long history of attempts to maintain a disciplinary boundary separating technical knowledge from the languages people speak day to day. Machine learning, in its increasing dependence on words, now places this boundary in jeopardy, making its stakes all the more urgent to understand. The idea of the algorithm is a levee holding back the social complexity of language, and it is about to break. This book is about the flood that inspired its construction. (shrink)

Neuropsychological research on the neural basis of behaviour generally posits that brain mechanisms will ultimately suffice to explain all psychologically described phenomena. This assumption stems from the idea that the brain is made up entirely of material particles and fields, and that all causal mechanisms relevant to neuroscience can therefore be formulated solely in terms of properties of these elements. Thus, terms having intrinsic mentalistic and/or experiential content (e.g. ‘feeling’, ‘knowing’ and ‘effort’) are not included as primary causal factors. This (...) theoretical restriction is motivated primarily by ideas about the natural world that have been known to be fundamentally incorrect for more than three-quarters of a century. Contemporary basic physical theory differs profoundly from classic physics on the important matter of how the consciousness of human agents enters into the structure of empirical phenomena. The new principles contradict the older idea that local mechanical processes alone can account for the structure of all observed empirical data. Contemporary physical theory brings directly and irreducibly into the overall causal structure certain psychologically described choices made by human agents about how they will act. This key development in basic physical theory is applicable to neuroscience, and it provides neuroscientists and psychologists with an alternative conceptual framework for describing neural processes. Indeed, owing to certain structural features of ion channels critical to synaptic function, contemporary physical theory must in principle be used when analysing human brain dynamics. The new framework, unlike its classic-physics-based predecessor, is erected directly upon, and is compatible with, the prevailing principles of physics. It is able to represent more adequately than classic concepts the neuroplastic mechanisms relevant to the growing number of empirical studies of the capacity of directed attention and mental effort to systematically alter brain function.. (shrink)

A simple tool is provided to assist researchers in assessing contributions to a scientific publication, for ease in evaluating which contributors qualify for authorship, and in what order the authors should be listed. The tool identifies four phases of activity leading to a publication—Conception and Design, Data Acquisition, Analysis and Interpretation, and Manuscript Preparation. By comparing a project participant’s contribution in a given phase to several specified thresholds, a score of up to five points can be assigned; the contributor’s scores (...) in all four phases are summed to yield a total “contribution score”, which is compared to a threshold to determine which contributors merit authorship. This tool may be useful in a variety of contexts in which a systematic approach to authorial credit is desired. (shrink)

Obsessive-compulsive disorder is a commonly occurring neuropsychiatric condition characterized by bothersome intrusive thoughts and urges that frequently lead to repetitive dysfunctional behaviours such as excessive handwashing. There are well-documented alterations in cerebral function which appear to be closely related to the manifestation of these symptoms. Controlled studies of cognitive-behavioural therapy techniques utilizing the active refocusing of attention away from the intrusive phenomena of OCD and onto adaptive alternative activities have demonstrated both significant improvements in clinical symptoms and systematic changes in (...) the pathological brain circuitry associated with them. Careful investigation of the relationships between the experiential and putative neurophysiological processes involved in these changes can offer useful insights into volitional aspects of cerebral function. (shrink)

This paper is concerned with the uses of history in science. It focuses in particular on Anglo-American genetics and on university textbooks—where the canon of a science is consolidated, as the heterogeneous approaches and controversies of its practice are rendered unified for its reproduction. Tracing the emergence and eventual standardization of geneticists’ use of a case-based method of teaching in the 1920s–1950s, this paper argues that geneticists created historical environments in their textbooks—spaces in which students developed an understanding of the (...) laws of genetics through simulations of their discovery and use. Witnessing the unfolding of Mendel’s and Morgan’s experiments and performing genetic crosses on paper, students learned not only the rules that were explicitly taught as such, but also the experientially-based, tacit skills needed to find and follow these rules. This didactic system taught them how to go on when confronting new situations, and in doing so, provided geneticists with an important disciplinary tool, freeing the first steps of their student’s enculturation from the physical infrastructure of the laboratory. (shrink)

water paradox has long served as an argument against the Principle of Indifference. A solution to the paradox is proposed, with a view toward resolving general difficulties in applying the principle.

This essay introduces the second of three installments of an “elegiac symposium” in Common Knowledge on figures and concepts devalued in what Thomas Kuhn refers to as “paradigm shifts.” The essay suggests that Kuhn’s idea is provincial, in three specified senses, and then goes on to show how differently Japanese culture regards and manages major change. The author of this introduction, who is also the journal’s editor, begins by evaluating a triptych of 1895 by Toshikata as a response to the (...) seemingly revolutionary changes brought by the Meiji Restoration a generation before. He then goes on to discuss, as exemplary of Japanese attitudes toward change, the Shinto ritual during which the sacred shrines of Ise Jingū are torn down and rebuilt every twenty years. The essay concludes by explaining how the impetus for this ritual is also involved in less-exalted aspects of Japanese culture; for example, in the peculiarities of the market for ukiyo-e woodblock prints. Overall, this essay shows that Japanese ways of regarding concepts such as “old” and “new,” “continuity” and “change,” differ so radically from those presupposed in the West that the latter should be regarded as provincial rather than as universally valid. (shrink)

In this introduction to Part 1 of “Contextualism—the Next Generation: Symposium on the Future of a Methodology,” the editor of Common Knowledge, a “journal of left-wing Kuhnian opinion,” reports that the new symposium responds to contextualist criticism of the previous CK symposium, which was on xenophilia. The content of the earlier symposium met with objections, from contextualists, on the grounds of methodology, and the new symposium questions the methodology of contextualism for the limits that it places on content as well (...) as on normative aims and degree of focus. Tracing the origins of contextualism to Kuhn and his theory that paradigms of scientific knowledge are incommensurable, this essay then argues that Kuhnian method is formal, with scant concern for content, and that Kuhn’s work was vatic, more than philosophical or historical. Kuhn’s depiction of his sudden, blinding realization that Aristotelian physics is correct in its own context is assessed as an ironic application of biblical scenes of revelation to what is, essentially, a process of scrupulous, piecemeal scholarship. What Kuhn unknowingly wanted, the essay concludes, was a combination of contextualism and phenomenology, as a means of knowing what it was like to believe in Aristotelian, as opposed to modern, concepts of matter, quality, space, void, position, change, and motion. The essay then introduces the first contribution to the new symposium: a monograph retrieving geometrical and taxonomic—Euclidean and Theophrastan—idioms of discourse about fictional characters and inquiring into their changing affective content. (shrink)

Compilation of articles originally published in Common knowledge.

This paper concerns the question of what makes disability discrimination morally objectionable. When I refer to disability discrimination, I am focusing solely on a failure or denial of reasonable accommodations to a disabled person. I argue a failure to provide reasonable accommodations is wrong when and because it violates principles of relational equality. To do so, I examine four accounts of wrongful discrimination found in the literature and apply these theories to disability discrimination. I argue that all of these accounts (...) leave us wanting because they have implausible implications or other limitations. I then defend my relational egalitarian theory of wrongful disability discrimination. I argue why principles of relational equality can explain the wrongness of failing to accommodate a disabled person. I will then illustrate how my account can identify plausible instances of disability discrimination while avoiding implausible implications. Finally, I discuss some further complications with my account while highlighting its benefits. Importantly, my argument can capture the distinctive wrongness of disability law and policy’s reasonable accommodation mandates. (shrink)

People with disabilities suffer from pervasive inequalities in employment, education, transportation, housing, and health care compared to those who are not disabled. Moreover, people with disabilities are often subject to unjustified stigma and pity. In this paper, I will explain why these disadvantages violate relational egalitarian principles of justice. As I will show, my argument can account for both kinds of inequality that disabled people face.

This article reports on a survey of DNA-related practices and procedures within District Attorneys' offices to obtain preliminary information about actual prosecutorial practices. The data obtained is preliminary but supportive of further study of areas targeted by the survey.

DNA evidence has rapidly become a significant and routine feature of modern criminal prosecutions. The first introduction of DNA evidence in a U.S. Court occurred in 1987. By 1994, 42 percent of local prosecutors reported that they had used DNA evidence in a felony case at least once. By 2001 that number had increased to 68 percent. Moreover, from a technical point of view, the potential benefits of DNA testing are substantial. Early hurdles to admissibility during trial have been overcome (...) by the adoption of rigorous standards for DNA analysis. Rapid development of identification technology, fueled in significant part by the Human Genome Project, and the resultant development and expansion of national forensic DNA databases, has increased the potential of DNA to play a major role in crime solving. Indeed, over three million offender profiles, collected by state and federal authorities, now reside in the National DNA Index System. This number is likely to increase as more states and the federal government are expanding compelled DNA collections to individuals arrested for certain crimes. (shrink)

This paper concerns what if any obligations a “society of equals” has to criminal offenders after legal punishment ends. In the United States, when people leave prisons, they are confronted with a wide range of federal, state, and local laws that burden their ability to secure welfare benefits, public housing, employment opportunities, and student loans. Since the 1980s, these legal consequences of criminal convictions have steadily increased in their number, severity, and scope. The central question I want to ask is (...) whether the infliction of these burdensome legal consequences for those who have already been punished by the state is consistent with the ideal of equality. I argue that these collateral legal consequences violate relational egalitarian principles of justice and are thus objectionable. I conclude by examining possible objections to my argument. (shrink)

Discussions of withdrawal of life support often revolve around a patient’s perceived level of suffering or lack of experience. Personhood, however, is often linked to personal agency. In the present study, 279 laypeople estimated the amount of agency and experience in hypothetical patients differing in degree of consciousness. Participants also indicated whether they would choose to maintain or terminate life support. Patients were more likely to terminate life support for a patient in a persistent vegetative state, followed by one with (...) amyotrophic lateral sclerosis and in a minimally conscious state. The decision to maintain life support was reliably predicted by perceptions of a patient’s agency but life support decisions were not significantly predicted by ratings of experience. In sum, decisions regarding maintaining life support are more influenced by perceptions of a patient’s ability to plan and act than by perceptions of a patient’s ability to feel or experience. (shrink)

The mammalian chromosome is longitudinally heterogeneous in structure and function and this is the basis for the specific banding patterns produced by various chromosome staining techniques. The two most frequently used techniques are G, or Giemsa banding and R, or reverse banding. Each type of stained band is characterised by variations in gene density, time of replication, base composition, density of repeat sequences, and chromatin packaging. It is increasingly apparent that R and G bands, which are complementary to each other, (...) represent separate compartments of the euchromatic human genome, with R bands containing the vast majority of genes. R bands are also more GC‐rich, contain a higher density of Alu repeats, and replicate earlier in S phase, than G bands. These properties may be interdependent and may have coevolved. (shrink)

As part of a larger study eliciting Canadian producer and non-producer views about animal welfare, open-ended, semi-structured interviews were used to explore opinions about animal welfare of 20 Canadian pig producers, most of whom were involved in confinement-based systems. With the exception of the one organic producer, who emphasized the importance of a “natural” life, participants attached overriding importance to biological health and functioning. They saw their efforts as providing pigs with dry, thermally regulated, indoor environments where animals received abundant (...) feed, careful monitoring and where prospective disease outbreaks could be minimized and controlled. Emphasis was also placed on low-stress handling and agreeable working conditions which were believed to promote good animal care. The fact that pigs tend to respond to such conditions with steady growth reinforced the belief that good welfare was provided. Participants supported the use of sow gestation stalls, but with some reservations, and expressed concern about welfare problems that could occur if sows were grouped. Invasive procedures (castration, tail-docking, teeth clipping) were recognized as painful but were accepted because they were seen as: (1) necessary for sales or management; (2) satisfactory trade-offs to prevent worse welfare problems such as injury or infection; or (3) sufficiently short-term to be relatively unimportant. Participants were adamantly opposed to animal neglect and some welcomed actions of animal protectionists that expose poor care. Producers also welcomed natural-science-based approaches to improving animal welfare. The findings contribute to a broader effort to identify overlapping values among different stakeholder groups as a basis for formulating mutually agreeable, farm animal care and handling polices. (shrink)

Scholars in both digital humanities and media studies have noted an apparent disconnect between computation and the interpretive methods of the humanities. Alan Liu has argued that literary scholars employing digital methods encounter a “meaning problem” due to the difficulty of reconciling algorithmic methods with interpretive ones. Conversely, the media scholar Friedrich Kittler has questioned the adequacy of hermeneutics as a means of studying computers. This paper argues that that this disconnect results from a set of contingent decisions made in (...) both humanistic and mathematical disciplines in the first half of the nineteenth century that delineated, with implications that continue to resonate in the present day, which aspects of human activity would come to be formalized in algorithms and which would not. I begin with a discussion of Nicolas de Condorcet, who attempted, at the height of the 1789 revolution, to turn algebra into a universal language; his work, I argue, exemplifies the form of algorithmic thinking that existed before the Romantic turn. Next, I discuss William Wordsworth’s arguments about the relationship of poetry and science. While Wordsworth is sometimes viewed as a critic of science, I argue that his polemic is specifically targeted at highly politicized projects like Condorcet’s that sought to supplant existing modes of thought with scientific rationality. Finally, I demonstrate the importance of Romantic thought for George Boole, creator of the logic system that would eventually form the basis of digital electronics. The reason Boole was able to succeed where Condorcet had failed, I argue, was that Romantic notions of culture enabled him to reconcile a mechanical view of mathematical reasoning with an organic view of the development of meaning—a dichotomy that remains a key assumption of computer interfaces in the twenty-first century. (shrink)

In this piece, the editor of Common Knowledge offers excerpts from his two-year correspondence with a reader in Hong Kong, who was drawn to arguments made in the journal about maintaining “quietism and resistance in the face of vile behavior.” In the summer and fall of 2019, during the insurrection in Hong Kong, his correspondent shifts rapidly from taking comfort in CK’s defense of quietism to a full embrace of “uncivil disobedience.” She implies that the solidarity the editor expresses with (...) Hong Kong is merely rhetorical, and he responds by writing this article and quoting in it the entire text of the 1984 Joint Declaration of the Chinese and British governments on the question of Hong Kong. The declaration’s guarantees of autonomy and civil rights appear in bold italics. The editor concludes by suggesting that it falls to the United Nations Security Council to enforce the terms of the treaty. (shrink)

The mammalian chromosome is longitudinally heterogeneous in structure and function and this is the basis for the specific banding patterns produced by various chromosome staining techniques. The two most frequently used techniques are G, or Giemsa banding and R, or reverse banding. Each type of stained band is characterised by variations in gene density, time of replication, base composition, density of repeat sequences, and chromatin packaging. It is increasingly apparent that R and G bands, which are complementary to each other, (...) represent separate compartments of the euchromatic human genome, with R bands containing the vast majority of genes. R bands are also more GC‐rich, contain a higher density of Alu repeats, and replicate earlier in S phase, than G bands. These properties may be interdependent and may have coevolved. (shrink)

The issue of whether biological and psychological properties associated with disability can be harmful, beneficial, or neutral brings up an important philosophical question about how we evaluate disability, and disability’s impact on well-being. The debate is usually characterized as between those who argue disability is intrinsically harmful, and disability rights advocates who argue that disability is just another way of being different, in part, because disability can also provide important benefits. I argue that this debate is a false one, as (...) neither view can capture the more complicated relationship between disability and well-being. I argue that many disabilities are best understood as a kind of pro-tanto extrinsic harm that is characterized in counterfactual terms. This means that our judgments concerning disability and harm must be context-sensitive. (shrink)

Data gathered by investigators are used to test the validity of a specific scientific hypothesis. When the hypothesis relates to the biology of a disease or its treatment, then data sets may contain specific and identifiable medical information. Since the information in a clinical data set was gathered to test a specific hypothesis and there is usually a sponsor interested in the outcome, the issue of who owns the data is a critical one. In my opinion, data from both publicly (...) and privately funded research should be made available, in a format that protects confidentiality and intellectual property rights, to interested and responsible parties within a reasonable period of time after publication. (shrink)

Heterochromatin remains condensed throughout the cell cycle, is generally transcriptionally inert and is built and maintainedbygroupsoffactors witheachgroupmember sharing a similar function. In mammals, these groups include sequence-specific transcriptional repressors, functionalRNAandproteinsinvolvedinDNAandhistone methylation. Heterochromatin is cemented together via interactions within and between each protein group and ismaintainedbythecell’sreplicationmachinery.Itcanbe constitutive (permanent) or facultative (developmentally regulated) and be any size, from a gene promotor to a whole genome. By studying the formation of facultative heterochromatin, we have gained information about how heterochromatin is assembled. We have (...) discovered that there are many different architectural plans for the building of heterochromatin, leading to a seemingly never-ending variety of heterochromatic loci, with each built according to a general rule. (shrink)

This qualitative analysis examines the thinking of Thomas Merton and Jacques Ellul on the impact that they believe technology and the idea of progress has had on human freedom. The thesis is that for both Merton and Ellul, modern technology itself and an uncritical acceptance of the idea of technological progress potentially inhibits the contemplative life and serves to deprive humanity of the God-given gift of freedom. Examining Merton and Ellul through theological, sociological, and political lenses allows a point-by-point comparison (...) of a number of different ideas that directly relate to the impact that technology has had on the human condition. This comparison identifies commonalities of thought and traces some of the antecedents to their thought. Merton the Roman Catholic and Ellul the Protestant offer remarkably similar conclusions regarding the impact that technology has had on the human condition. As Christians, they provide a distinctly Christocentric view of freedom, and it is against this unique view that the impact of technology and the idea of progress is evaluated. Both men offer a "third way," which is an approach that allows one to transcend the grip that the technological society maintains over the individual. They are examples of men not only thinking about the impact that technology has had on human freedom as much as they are individuals firmly committed to living out the ideals that they spent their lives articulating. (shrink)