The sounds that make up spoken words are heard in a series and must be mapped rapidly onto words in memory because their elements, unlike those of visual words, cannot simultaneously exist or persist in time. Although theories agree that the dynamics of spoken word recognition are important, they differ in how they treat the nature of the competitor set—precisely which words are activated as an auditory word form unfolds in real time. This study used eye tracking to measure the (...) impact over time of word frequency and 2 partially overlapping competitor set definitions: onset density and neighborhood density. Time course measures revealed early and continuous effects of frequency (facilitatory) and on set based similarity (inhibitory). Neighborhood density appears to have early facilitatory effects and late inhibitory effects. The late inhibitory effects are due to differences in the temporal distribution of similarity within neighborhoods. The early facilitatory effects are due to subphonemic cues that inform the listener about word length before the entire word is heard. The results support a new conception of lexical competition neighborhoods in which recognition occurs against a background of activated competitors that changes over time based on fine-grained goodness-of-fit and competition dynamics. (shrink)

The sounds that make up spoken words are heard in a series and must be mapped rapidly onto words in memory because their elements, unlike those of visual words, cannot simultaneously exist or persist in time. Although theories agree that the dynamics of spoken word recognition are important, they differ in how they treat the nature of the competitor set—precisely which words are activated as an auditory word form unfolds in real time. This study used eye tracking to measure the (...) impact over time of word frequency and 2 partially overlapping competitor set definitions: onset density and neighborhood density. Time course measures revealed early and continuous effects of frequency (facilitatory) and on set based similarity (inhibitory). Neighborhood density appears to have early facilitatory effects and late inhibitory effects. The late inhibitory effects are due to differences in the temporal distribution of similarity within neighborhoods. The early facilitatory effects are due to subphonemic cues that inform the listener about word length before the entire word is heard. The results support a new conception of lexical competition neighborhoods in which recognition occurs against a background of activated competitors that changes over time based on fine-grained goodness-of-fit and competition dynamics. (shrink)

The sounds that make up spoken words are heard in a series and must be mapped rapidly onto words in memory because their elements, unlike those of visual words, cannot simultaneously exist or persist in time. Although theories agree that the dynamics of spoken word recognition are important, they differ in how they treat the nature of the competitor set—precisely which words are activated as an auditory word form unfolds in real time. This study used eye tracking to measure the (...) impact over time of word frequency and 2 partially overlapping competitor set definitions: onset density and neighborhood density. Time course measures revealed early and continuous effects of frequency (facilitatory) and on set based similarity (inhibitory). Neighborhood density appears to have early facilitatory effects and late inhibitory effects. The late inhibitory effects are due to differences in the temporal distribution of similarity within neighborhoods. The early facilitatory effects are due to subphonemic cues that inform the listener about word length before the entire word is heard. The results support a new conception of lexical competition neighborhoods in which recognition occurs against a background of activated competitors that changes over time based on fine‐grained goodness‐of‐fit and competition dynamics. (shrink)

Despite the lack of invariance problem (the many‐to‐many mapping between acoustics and percepts), human listeners experience phonetic constancy and typically perceive what a speaker intends. Most models of human speech recognition (HSR) have side‐stepped this problem, working with abstract, idealized inputs and deferring the challenge of working with real speech. In contrast, carefully engineered deep learning networks allow robust, real‐world automatic speech recognition (ASR). However, the complexities of deep learning architectures and training regimens make it difficult to use them to (...) provide direct insights into mechanisms that may support HSR. In this brief article, we report preliminary results from a two‐layer network that borrows one element from ASR, long short‐term memory nodes, which provide dynamic memory for a range of temporal spans. This allows the model to learn to map real speech from multiple talkers to semantic targets with high accuracy, with human‐like timecourse of lexical access and phonological competition. Internal representations emerge that resemble phonetically organized responses in human superior temporal gyrus, suggesting that the model develops a distributed phonological code despite no explicit training on phonetic or phonemic targets. The ability to work with real speech is a major advance for cognitive models of HSR. (shrink)

The question of when and how bottom‐up input is integrated with top‐down knowledge has been debated extensively within cognition and perception, and particularly within language processing. A long running debate about the architecture of the spoken‐word recognition system has centered on the locus of lexical effects on phonemic processing: does lexical knowledge influence phoneme perception through feedback, or post‐perceptually in a purely feedforward system? Elman and McClelland (1988) reported that lexically restored ambiguous phonemes influenced the perception of the following phoneme, (...) supporting models with feedback from lexical to phonemic representations. Subsequently, several authors have argued that these results can be fully accounted for by diphone transitional probabilities in a feedforward system (Cairns et al., 1995; Pitt & McQueen, 1998). We report results strongly favoring the original lexical feedback explanation: lexical effects were present even when transitional probability biases were opposite to those of lexical biases. (shrink)

Norris et al.'s claim that feedback is unnecessary is compromised by (1) a questionable application of Occam's razor, given strong evidence for feedback in perception; (2) an idealization of the speech recognition problem that simplifies those aspects of the input that create conditions where feedback is useful; (3) Norris et al.'s use of decision nodes that incorporate feedback to model some important empirical results; and (4) problematic linking hypotheses between crucial simulations and behavioral data.

A long-standing question in cognitive science is how high-level knowledge is integrated with sensory input. For example, listeners can leverage lexical knowledge to interpret an ambiguous speech sound, but do such effects reflect direct top-down influences on perception or merely postperceptual biases? A critical test case in the domain of spoken word recognition is lexically mediated compensation for coarticulation (LCfC). Previous LCfC studies have shown that a lexically restored context phoneme (e.g., /s/ in Christma#) can alter the perceived place of (...) articulation of a subsequent target phoneme (e.g., the initial phoneme of a stimulus from a tapes-capes continuum), consistent with the influence of an unambiguous context phoneme in the same position. Because this phoneme-to-phoneme compensation for coarticulation is considered sublexical, scientists agree that evidence for LCfC would constitute strong support for top–down interaction. However, results from previous LCfC studies have been inconsistent, and positive effects have often been small. Here, we conducted extensive piloting of stimuli prior to testing for LCfC. Specifically, we ensured that context items elicited robust phoneme restoration (e.g., that the final phoneme of Christma# was reliably identified as /s/) and that unambiguous context-final segments (e.g., a clear /s/ at the end of Christmas) drove reliable compensation for coarticulation for a subsequent target phoneme. We observed robust LCfC in a well-powered, preregistered experiment with these pretested items (N = 40) as well as in a direct replication study (N = 40). These results provide strong evidence in favor of computational models of spoken word recognition that include top–down feedback. (shrink)

Distributional semantic models (DSMs) are a primary method for distilling semantic information from corpora. However, a key question remains: What types of semantic relations among words do DSMs detect? Prior work typically has addressed this question using limited human data that are restricted to semantic similarity and/or general semantic relatedness. We tested eight DSMs that are popular in current cognitive and psycholinguistic research (positive pointwise mutual information; global vectors; and three variations each of Skip-gram and continuous bag of words (CBOW) (...) using word, context, and mean embeddings) on a theoretically motivated, rich set of semantic relations involving words from multiple syntactic classes and spanning the abstract–concrete continuum (19 sets of ratings). We found that, overall, the DSMs are best at capturing overall semantic similarity and also can capture verb–noun thematic role relations and noun–noun event-based relations that play important roles in sentence comprehension. Interestingly, Skip-gram and CBOW performed the best in terms of capturing similarity, whereas GloVe dominated the thematic role and event-based relations. We discuss the theoretical and practical implications of our results, make recommendations for users of these models, and demonstrate significant differences in model performance on event-based relations. (shrink)

The effects of lexical context on phonological processing are pervasive and there have been indications that such effects may be modulated by attention. However, attentional modulation in speech processing is neither well documented nor well understood. Experiment 1 demonstrated attentional modulation of lexical facilitation of speech sound recognition when task and critical stimuli were identical across attention conditions. We propose modulation of lexical activation as a neurophysiologically plausible computational mechanism that can account for this type of modulation. Contrary to the (...) claims of critics, this mechanism can account for attentional modulation without violating the principle of interactive processing. Simulations of the interactive TRACE model extended to include two different ways of modulating lexical activation showed that each can account for attentional modulation of lexical feedback effects. Experiment 2 tested conflicting predictions from the two implementations and provided evidence that is consistent with bias input as the mechanism of attentional control of lexical activation. (shrink)

Bilinguals have been shown to perform worse than monolinguals in a variety of verbal tasks. This study investigated this bilingual verbal cost in a large-scale picture-naming study conducted in Spanish. We explored how individual characteristics of the participants and the linguistic properties of the words being spoken influence this performance cost. In particular, we focused on the contributions of lexical frequency and phonological similarity across translations. The naming performance of Spanish-Catalan bilinguals speaking in their dominant and non-dominant language was compared (...) to that of Spanish monolinguals. Single trial naming latencies were analyzed by means of linear mixed models accounting for individual effects at the participant and item level. While decreasing lexical frequency was shown to increase naming latencies in all groups, this variable by itself did not account for the bilingual cost. In turn, our results showed that the bilingual cost disappeared when naming words with high phonological similarity across translations. In short, our results show that frequency of use can play a role in the emergence of the bilingual cost, but that phonological similarity across translations should be regarded as one of the most important variables that determine the bilingual cost in speech production. Low phonological similarity across translations yields worse performance in bilinguals and promotes the bilingual cost in naming performance. The implications of our results for the effect of phonological similarity across translations within the bilingual speech production system are discussed. (shrink)

Visual word recognition is facilitated by the presence of orthographic neighbors that mismatch the target word by a single letter substitution. However, researchers typically do not consider where neighbors mismatch the target. In light of evidence that some letter positions are more informative than others, we investigate whether the influence of orthographic neighbors differs across letter positions. To do so, we quantify the number of enemies at each letter position (how many neighbors mismatch the target word at that position). Analyses (...) of reaction time data from a visual word naming task indicate that the influence of enemies differs across letter positions, with the negative impacts of enemies being most pronounced at letter positions where readers have low prior uncertainty about which letters they will encounter (i.e., positions with low entropy). To understand the computational mechanisms that give rise to such positional entropy effects, we introduce a new computational model, VOISeR (Visual Orthographic Input Serial Reader), which receives orthographic inputs in parallel and produces an over‐time sequence of phonemes as output. VOISeR produces a similar pattern of results as in the human data, suggesting that positional entropy effects may emerge even when letters are not sampled serially. Finally, we demonstrate that these effects also emerge in human subjects' data from a lexical decision task, illustrating the generalizability of positional entropy effects across visual word recognition paradigms. Taken together, such work suggests that research into orthographic neighbor effects in visual word recognition should also consider differences between letter positions. (shrink)

This paper examines the potential role of deliberative democracy in constitutional processes of higher law-making, either for the founding of constitutions or for constitutional change. It defines deliberative democracy as the combination of political equality and deliberation and situates this form of democracy in contrast to a range of alternatives. It then considers two contrasting processes—elite deliberation and plebiscitary mass democracy (embodied in referenda) as approaches to higher law-making that employ deliberation without political equality or political equality without deliberation. It (...) finally turns to some institutional designs that might achieve both fundamental values at the same time, or in the process of realizing a sequence of choices. (shrink)

We only see Mars from Earth's perspective in the first season of The Expanse, but Season 2 changes that by introducing Gunnery Sergeant Bobbie Draper, a Martian Congressional Republic Navy (MCRN) marine. Mars as seen by Martians resembles our Mars: ruddy, rocky, dusty, inhospitable, and cold. This chapter focuses on Draper and the Mars Congressional Republic (MCR). What is striking about the culture of the MCR is how naturally it flows from contemporary visions of space exploration, especially those from the (...) Apollo era forward. For somewhat more specific examples, the chapter considers the “Statement of Philosophy” of the National Space Society, another well‐known space advocacy organization in the US. The MCR's commitment to terraforming Mars demonstrates that its future depends “upon the progress of science and technology.”. (shrink)

It is argued here that understanding John Dewey's thought as that of a prodigal liberal or a fellow traveller does not capture the complexity of his work. It is also important to recognise the portion of his work that is historie morale. In the very best sense it is epic, encapsulating the hopes and dreams of a history of the American people in the early 1900s. It is a work that simultaneously pursues modernity and the past — for the sake (...) of coping with the present. It also calls attention to an unnoticed element in his work 'inexperience'. (shrink)

While Nietzsche's works and ideas are relevant across the many branches of philosophy, the themes of contest and conflict have been mostly overlooked. Conflict and Contest in Nietzsche's Philosophy redresses this situation, arguing for the importance of these issues throughout Nietzsche's work. The volume has three key lines of inquiry: Nietzsche's ontology of conflict; Nietzsche's conception of the agon; and Nietzsche's warrior-philosophy. Under these three umbrellas is a collection of insightful and provocative essays considering, among other topics, Nietzsche's understanding of (...) resistance; his engagement with classical thinkers alongside his contemporaries, including Jacob Burckhardt; his views on language, metaphor and aphorism; and war, revolt and terror. In bringing together such topics, Conflict and Contest in Nietzsche's Philosophy seeks to correct the one-sided tendencies within the existing literature to read simply 'hard' and 'soft' analyses of conflict. Written by scholars across the Anglophone and the European traditions, within and beyond philosophy, this collection emphasises the entire problematic of conflict in Nietzsche's thought and its relation to his philosophical and literary practice. (shrink)

Does philosophy have any value for our faith? James Spiegel insists that Christians need philosophy to discern wrong ideas and shows us how it can enhance biblical faith and living.

It has become orthodox to read Nietzsche as proposing the ‘sublimation’ of troublesome behavioural impulses. On this interpretation, he is said to denigrate the elimination of our impulses, preferring that we master them by pressing them into the service of our higher goals. My thesis is that this reading of Nietzsche’s conception of self-cultivation does not bear scrutiny. Closer examination of his later thought reveals numerous texts that show him explicitly recommending an eliminatory approach to self-cultivation. I invoke his theory (...) of the will to power in order to explain why he persistently valorises both elimination and sublimation as preconditions of healthy subjective unity. I conclude that which of these two approaches he recommends in a given situation depends on whether or not the impulse in question can be put to use within the overall economy of our drives. (shrink)

The moral obligation to support space exploration follows from our obligations to protect the environment and to survive as a species. It can be justified through three related arguments: one supporting space exploration as necessary for acquiring resources, and two illustrating the need for space technology in order to combat extraterrestrial threats such as meteorite impacts. Three sorts of objections have been raised against this obligation. The first are objections alleging that supporting space exploration is impractical. The second is the (...) widely held notion that space exploration and environmentalism are at odds with one another. Finally, there are two objections to using space resources that Robert Sparrow has raised on the topic of terraforming. The obligation to support space exploration can be defended in at least three ways: (1) the "argument from resources," that space exploration is useful for amplifying our available resources; (2) the "argument from asteroids," that space exploration is necessary for protecting the environment and its inhabitants from extraterrestrial threats such as meteorite impacts; and (3) the "argument from solar burnout," that we are obligated to pursue interstellar colonization in order to ensure long-term human survival. (shrink)

Examines recent changes in technology and social organization and shows how social theory can inform the construction of social organization and help provide avenues of future social development.

Terraforming is a process of planetary engineering by which the extant environment of a planetary body is transformed into an environment capable of supporting human inhabitants. The question I would like to consider in this paper is whether there is any reason to believe that the terraforming of another planet—for instance, the terraforming of Mars—is morally problematic. Topics related to the human exploration of space are not often discussed in philosophical circles. Nevertheless, there exists a growing body of philosophical literature (...) dedicated to sorting out the moral implications of the use of resources from (and in) space. Most of this literature is produced as environmental philosophy. Questions of .. (shrink)

Debating Deliberative Democracy explores the nature and value of deliberation, the feasibility and desirability of consensus on contentious issues, the implications of institutional complexity and cultural diversity for democratic decision making, and the significance of voting and majority rule in deliberative arrangements. Investigates the nature and value of deliberation, the feasibility and desirability of consensus on contentious issues, the implications of institutional complexity and cultural diversity for democratic decision making, and the significance of voting and majority rule in deliberative arrangements. (...) Includes focus on institutions and makes reference to empirical work. Engages a debate that cuts across political science, philosophy, the law and other disciplines. (shrink)

Contrary to Laurel Gleason's assertions, Deliberative Polling among random samples is not a process that is dominated by “experts” or by certain categories of deliberator; it produces genuine gains among the participants in knowledge of information that has been verified as true and relevant; it does not cause ideological polarization; and it is not intended as a substitute for, rather than a supplement to, deliberation on the part of the general public.

This book aims to contribute significantly to the understanding of issues of value which repeatedly emerge in interdisciplinary discussions on space and society. Although a recurring feature of discussions about space in the humanities, the treatment of value questions has tended to be patchy, of uneven quality and even, on occasion, idiosyncratic rather than drawing upon a close familiarity with state-of-the-art ethical theory. One of the volume's aims is to promote a more robust and theoretically informed approach to the ethical (...) dimension of discussions on space and society. While the contributions are written in a manner which is accessible across disciplines, the book still withstands scrutiny by those whose work is primarily on ethics. At the same time it allows academics across a range of disciplines an insight into current approaches toward how the work of ethics gets done. The issues of value raised could be used to inform debates about regulation, space law and protocols for microbial discovery as well as longer-range policy debates about funding. (shrink)

Three common assumptions of both liberal theory and political debate are the autonomy of the family, the principle of merit, and equality of life chances. Fishkin argues that even under the best conditions, commitment to any two of these principles precludes the third._“A brief survey and brilliant critique of contemporary liberal political theory…. A must for all political theory or public policy collections.” –_Choice_ “The strong points of Fishkin’s book are many. He raises provocative issues, locates them within a broader (...) theoretical framework, and demonstrates an urgent need for liberals to set certain priorities. His main message—that liberalism has radical implications for ordinary life—needs to be heard by many.” --Virginia L. Warren, _Michigan Law Review_ “A highly original and powerfully argued book…. Fishkin is undoubtedly right, and his warning needs to be taken seriously…. This is not a book that catechizes us about what we should believe concerning the practicalities of distributive justice. It is a book that advises us about how we need to think about beliefs that are already popular dogmas, in the interest of making sense.” –James Gaffney, _America_ James S. Fishkin_ is associate professor of political science at Yale University. He is also the author of _The Limits of Obligation_ and _Beyond Subjective Morality_. (shrink)