Time underlies many interesting human behaviors. Thus, the question of how to represent time in connectionist models is very important. One approach is to represent time implicitly by its effects on processing rather than explicitly (as in a spatial representation). The current report develops a proposal along these lines first described by Jordan (1986) which involves the use of recurrent links in order to provide networks with a dynamic memory. In this approach, hidden unit patterns are fed back to themselves: (...) the internal representations which develop thus reflect task demands in the context of prior internal states. A set of simulations is reported which range from relatively simple problems (temporal version of XOR) to discovering syntactic/semantic features for words. The networks are able to learn interesting internal representations which incorporate task demands with memory demands: indeed, in this approach the notion of memory is inextricably bound up with task processing. These representations reveal a rich structure, which allows them to be highly context‐dependent, while also expressing generalizations across classes of items. These representations suggest a method for representing lexical categories and the type/token distinction. (shrink)

Although for many years a sharp distinction has been made in language research between rules and words—with primary interest on rules—this distinction is now blurred in many theories. If anything, the focus of attention has shifted in recent years in favor of words. Results from many different areas of language research suggest that the lexicon is representationally rich, that it is the source of much productive behavior, and that lexically specific information plays a critical and early role in the interpretation (...) of grammatical structure. But how much information can or should be placed in the lexicon? This is the question I address here. I review a set of studies whose results indicate that event knowledge plays a significant role in early stages of sentence processing and structural analysis. This poses a conundrum for traditional views of the lexicon. Either the lexicon must be expanded to include factors that do not plausibly seem to belong there; or else virtually all information about word meaning is removed, leaving the lexicon impoverished. I suggest a third alternative, which provides a way to account for lexical knowledge without a mental lexicon. (shrink)

Periodically in science there arrive on the scene what appear to be dramatically new theoretical frameworks (what the philosopher of science Thomas Kuhn has called paradigm shifts). Characteristic of such changes in perspective is the recasting of old problems in new terms. By altering the conceptual vocabulary we use to think about problems, we may discover solutions which were obscured by prior ways of thinking about things. Connectionism, artificial life, and dynamical systems are all approaches to cognition which are relatively (...) new and have been claimed to represent such paradigm shifts. Just how deep the shifts are remains an open question, but each of these approaches certainly seems to offer novel ways of dealing with basic questions in cognitive science. (shrink)

Anticipation plays a role in language comprehension. In this article, we explore the extent to which verb sense influences expectations about upcoming structure. We focus on change of state verbs like shatter, which have different senses that are expressed in either transitive or intransitive structures, depending on the sense that is used. In two experiments we influence the interpretation of verb sense by manipulating the thematic fit of the grammatical subject as cause or affected entity for the verb, and test (...) whether readers’ expectations for a transitive or intransitive structure change as a result. This sense‐biasing context influenced reading times in the postverbal regions. Reading times for transitive sentences were faster following good‐cause than good‐theme subjects, but the opposite pattern was found for intransitive sentences. We conclude that readers use sense‐contingent subcategorization preferences during on‐line comprehension. (shrink)

The nature–nurture controversy has been with us since it was first outlined by Plato and Aristotle. Nobody likes it anymore. All reasonable scholars today agree that genes and environment interact to determine complex cognitive outcomes. So why does the controversy persist? First, it persists because it has practical implications that cannot be postponed (i.e., what can we do to avoid bad outcomes and insure better ones?), a state of emergency that sometimes tempts scholars to stake out claims they cannot defend. (...) Second, the controversy persists because we lack a precise, testable theory of the process by which genes and the environment interact. In the absence of a better theory, innateness is often confused with (1) domain specificity (outcome X is so peculiar that it must be innate), (2) species specificity (we are the only species who do X, so X must lie in the human genome), (3) localization (outcome X is mediated by a particular part of the brain, so X must be innate), and (4) learnability (we cannot figure out how X could be learned, so X must be innate). We believe that an explicit, plausible theory of interaction is now around the corner, and that many of the classic maneuvers to defend or attack innateness will soon disappear. In the interim, some serious errors can be avoided if we keep these confounded issues apart. That is the major goal of this chapter: not to attack innateness but to clarify what claims about innateness are (and are not) about. (shrink)

McRae, Brown and Elman argue against the view that events are structured as frequently‐occurring sequences of world stimuli. They underline the importance of temporal structure defining event types and advance a more complex temporal structure, which allows for some variance in the component elements.

For more than three decades, research into the psycholinguistics of pronoun interpretation has argued that hearers use various interpretation ‘preferences’ or ‘strategies’ that are associated with specific linguistic properties of antecedent expressions. This focus is a departure from the type of approach outlined in Hobbs , who argues that the mechanisms supporting pronoun interpretation are driven predominantly by semantics, world knowledge and inference, with particular attention to how these are used to establish the coherence of a discourse. On the basis (...) of three new experimental studies, we evaluate a coherence-driven analysis with respect to four previously proposed interpretation biases—based on grammatical role parallelism, thematic roles, implicit causality, and subjecthood—and argue that the coherence-driven analysis can explain the underlying source of the biases and predict in what contexts evidence for each will surface. The results further suggest that pronoun interpretation is incrementally influenced by probabilistic expectations that hearers have regarding what coherence relations are likely to ensue, together with their expectations about what entities will be mentioned next, which, crucially, are conditioned on those coherence relations. (shrink)

The forms of words as they appear in text and speech are central to theories and models of lexical processing. Nonetheless, current methods for simulating their learning and representation fail to approach the scale and heterogeneity of real wordform lexicons. A connectionist architecture termed thesequence encoderis used to learn nearly 75,000 wordform representations through exposure to strings of stress‐marked phonemes or letters. First, the mechanisms and efficacy of the sequence encoder are demonstrated and shown to overcome problems with traditional slot‐based (...) codes. Then, two large‐scale simulations are reported that learned to represent lexicons of either phonological or orthographic wordforms. In doing so, the models learned the statistics of their lexicons as shown by better processing of well‐formed pseudowords as opposed to ill‐formed (scrambled) pseudowords, and by accounting for variance in well‐formedness ratings. It is discussed how the sequence encoder may be integrated into broader models of lexical processing. (shrink)

The forms of words as they appear in text and speech are central to theories and models of lexical processing. Nonetheless, current methods for simulating their learning and representation fail to approach the scale and heterogeneity of real wordform lexicons. A connectionist architecture termed thesequence encoderis used to learn nearly 75,000 wordform representations through exposure to strings of stress‐marked phonemes or letters. First, the mechanisms and efficacy of the sequence encoder are demonstrated and shown to overcome problems with traditional slot‐based (...) codes. Then, two large‐scale simulations are reported that learned to represent lexicons of either phonological or orthographic wordforms. In doing so, the models learned the statistics of their lexicons as shown by better processing of well‐formed pseudowords as opposed to ill‐formed (scrambled) pseudowords, and by accounting for variance in well‐formedness ratings. It is discussed how the sequence encoder may be integrated into broader models of lexical processing. (shrink)

Sibley, Kello, Plaut, and Elman (2008) proposed the sequence encoder as a model that learns fixed‐width distributed representations of variable‐length sequences. In doing so, the sequence encoder overcomes problems that have restricted models of word reading and recognition to processing only monosyllabic words. Bowers and Davis (2009) recently claimed that the sequence encoder does not actually overcome the relevant problems, and hence it is not a useful component of large‐scale word‐reading models. In this reply, it is noted that the (...) sequence encoder has facilitated the creation of large‐scale word‐reading models. The reasons for this success are explained and stand as counterarguments to claims made by Bowers and Davis. (shrink)

PurposeThis study investigated whether the ability to utilize statistical regularities from fluent speech and map potential words to meaning at 18-months predicts vocabulary at 18- and again at 24-months.MethodEighteen-month-olds were exposed to an artificial language with statistical regularities within the speech stream, then participated in an object-label learning task. Learning was measured using a modified looking-while-listening eye-tracking design. Parents completed vocabulary questionnaires when their child was 18-and 24-months old.ResultsAbility to learn the object-label pairing for words after exposure to the artificial (...) language predicted productive vocabulary at 24-months and amount of vocabulary change from 18- to 24 months, independent of non-verbal cognitive ability, socio-economic status and/or object-label association performance.ConclusionEighteen-month-olds’ ability to use statistical information derived from fluent speech to identify words within the stream of speech and then to map the “words” to meaning directly predicts vocabulary size at 24-months and vocabulary change from 18 to 24 months. The findings support the hypothesis that statistical word segmentation is one of the important aspects of word learning and vocabulary acquisition in toddlers. (shrink)

An essential aspect of knowing language is knowing the words of that language. This knowledge is usually thought to reside in the mental lexicon, a kind of dictionary that contains information regarding a word’s meaning, pronunciation, syntactic characteristics, and so on. In this article, a very different view is presented. In this view, words are understood as stimuli that operate directly on mental states. The phonological, syntactic and semantic properties of a word are revealed by the effects it has on (...) those states. (shrink)

Exploring the concepts of ethics, morality, and decision-making for the law enforcement community, Decision Point: Real-Life Ethical Dilemmas in Law Enforcement offers an inside look at the difficult challenges officers confront every day as they face ethical decisions that could drastically alter the course of their careers. Through a series of real-life vignettes, the book reviews specific scenarios, the actual decisions that were made, and the consequences and implications of these decisions. Focusing on the critical thinking needed for making appropriate (...) decisions, it retrospectively discusses considerations that were or should have been evaluated at the time. An engaging text ideal for classroom use, the book offers discussion questions at the end of each chapter that can be used as assignments, group breakout discussions, or professor-facilitated discussions. (shrink)

Levinas and the Philosophy of Religion Jeffrey L. Kosky Reveals the interplay of phenomenology and religion in Levinas’s thought. "Kosky examines Levinas’s thought from the perspective of the philosophy of religion and he does so in a way that is attentive to the philosophical nuances of Levinas’s argument.... an insightful, well written, and carefully documented study... that uniquely illuminates Levinas’s work." —John D. Caputo For readers who suspect there is no place for religion and morality in postmodern philosophy, (...) class='Hi'>Jeffrey L. Kosky suggests otherwise in this skillful interpretation of the ethical and religious dimensions of Emmanuel Levinas’s thought. Placing Levinas in relation to Hegel and Nietzsche, Husserl and Heidegger, Derrida and Marion, Kosky develops religious themes found in Levinas’s work and offers a way to think and speak about ethics and morality within the horizons of contemporary philosophy of religion. Kosky embraces the entire scope of Levinas’s writings, from Totality and Infinity to Otherwise than Being, contrasting Levinas’s early religious and moral thought with that of his later works while exploring the nature of phenomenological reduction, the relation of religion and philosophy, the question of whether Levinas can be considered a Jewish thinker, and the religious and theological import of Levinas’s phenomenology. Kosky stresses that Levinas is first and foremost a phenomenologist and that the relationship between religion and philosophy in his ethics should cast doubt on the assumption that a natural or inevitable link exists between deconstruction and atheism. Jeffrey L. Kosky is translator of On Descartes’ Metaphysical Prism: The Constitution and the Limits of Onto-theo-logy in Cartesian Thought by Jean-Luc Marion. He has taught at Williams College. Indiana Series in the Philosophy of Religion—Merold Westphal, general editor May 2001 272 pages, 6 1/8 x 9 1/4, bibl., index, append. cloth 0-253-33925-1 $39.95 s / £30.50. (shrink)

Individuals vary in the way they navigate through space. Some take novel shortcuts, while others rely on known routes to find their way around. We wondered how and why there is so much variation in the population. To address this, we first compared the trajectories of 368 human subjects navigating a virtual maze with simulated trajectories. The simulated trajectories were generated by strategy-based path planning algorithms from robotics. Based on the similarities between human trajectories and different strategy-based simulated trajectories, we (...) found that there is a variation in the type of strategy individuals apply to navigate space, as well as variation within individuals on a trial-by-trial basis. Moreover, we observed variation within a trial when subjects occasionally switched the navigation strategies halfway through a trajectory. In these cases, subjects started with a route strategy, in which they followed a familiar path, and then switched to a survey strategy, in which they took shortcuts by considering the layout of the environment. Then we simulated a second set of trajectories using five different but comparable artificial maps. These trajectories produced the similar pattern of strategy variation within and between trials. Furthermore, we varied the relative cost, that is, the assumed mental effort or required timesteps to choose a learned route over alternative paths. When the learned route was relatively costly, the simulated agents tended to take shortcuts. Conversely, when the learned route was less costly, the simulated agents showed preference toward a route strategy. We suggest that cost or assumed mental effort may be the reason why in previous studies, subjects used survey knowledge when instructed to take the shortest path. We suggest that this variation we observe in humans may be beneficial for robotic swarms or collections of autonomous agents during information gathering. (shrink)

Individuals vary in the way they navigate through space. Some take novel shortcuts, while others rely on known routes to find their way around. We wondered how and why there is so much variation in the population. To address this, we first compared the trajectories of 368 human subjects navigating a virtual maze with simulated trajectories. The simulated trajectories were generated by strategy-based path planning algorithms from robotics. Based on the similarities between human trajectories and different strategy-based simulated trajectories, we (...) found that there is a variation in the type of strategy individuals apply to navigate space, as well as variation within individuals on a trial-by-trial basis. Moreover, we observed variation within a trial when subjects occasionally switched the navigation strategies halfway through a trajectory. In these cases, subjects started with a route strategy, in which they followed a familiar path, and then switched to a survey strategy, in which they took shortcuts by considering the layout of the environment. Then we simulated a second set of trajectories using five different but comparable artificial maps. These trajectories produced the similar pattern of strategy variation within and between trials. Furthermore, we varied the relative cost, that is, the assumed mental effort or required timesteps to choose a learned route over alternative paths. When the learned route was relatively costly, the simulated agents tended to take shortcuts. Conversely, when the learned route was less costly, the simulated agents showed preference toward a route strategy. We suggest that cost or assumed mental effort may be the reason why in previous studies, subjects used survey knowledge when instructed to take the shortest path. We suggest that this variation we observe in humans may be beneficial for robotic swarms or collections of autonomous agents during information gathering. (shrink)

When corporations are accused of unethical behaviour by external actors, executives from those organizations are usually compelled to offer communicative responses to defend their corporate image. To demonstrate the effect that corporate executives'' communicative responses have on third parties'' perception of corporate image, we present the Corporate Communicative Response Model in this paper. Of the five potential communicative responses contained in this model (no response, denial, excuse, justification, and concession), results from our empirical test demonstrate that a concession is the (...) most effective and robust communicative option. (shrink)

The treatment of communication in Heidegger has often been relegated to a secondary status. In this essay, I attempt to remedy this tendency. In my attempt, I first focus on the role of language in Being and Time through focusing on Heidegger's treatment of λογος in the introduction, followed by the role of language in the constitution of the being of the da . The latter takes into account the special status of language in relation to the other two constituent (...) moments of the being of the da , i.e., understanding and attunement or moodedness. In Being and Time , understanding and attunement become factically disclosed as projection and thrownness. However, this disclosure occurs through language as communication. The nature of this disclosure as communication is the holding open of the da , a holding open of the da for the other, the keeping open of world through communication for community. Finally, consistent with Aristotle, community is thought as the basis of the political. (shrink)

The sixth and most recently published of the seven Heidegger manuscripts from his literary remains, The Event , is itself something of an event. If the Beiträge zur Philosophie was to set the stage for what has been received as an even more experimental Heidegger, then The Event in many ways might look back on that experimentation as yesterday’s news. The Event seems to begin where the Beiträge ended, as if there was no longer the need to justify its sentences (...) by means of an appeal to the historical tradition; in fact, such an appeal goes further towards confirming that tradition and its corresponding metaphysics than it does towards problematizing it. This is not to say that The Event progresses as if the historical tradition were no longer unfolding, but that it is much less concerned with trying to make sense of its own unfolding from out of some vaguely universal understanding of that tradition. In fact, while the Beiträge unceasingly attempted to make .. (shrink)

This essay concerns various difficulties encountered in the attempt to assess the relation between Heidegger and Nietzsche. More specifically, those difficulties are due to the notion and function of repetition in the texts of both Heidegger and Nietzsche. I attempt to provide an analysis of repetition in the Heidegger of Being and Time and surrounding texts (e.g., Plato’s Sophist and Grundbegriffe der aristotelischen Philosophie). Following this attempt, I then examine the transformed notion of repetition operative in the now famous text (...) written at the time of the Nietzsche lectures, Beiträge zur Philosophie (Vom Ereignis), a repetition that goes by the name of crossing (Übergang). In my presentation of crossing, I attempt to draw Heidegger and Nietzsche together through the repetition of crossing and that of eternal recurrence of the same. Finally, I argue that what draws Heidegger and Nietzsche together is also what prevents us from distinguishing them in any traditional way, a distinction that could then be followed by any number of judgments regarding historical influence. That is, that what draws the two to thinking is what both draws them together, which is abyssal repetition, and problematizes any attempt to distinguish them. (shrink)

Genetic analysis is revealing molecular components of circadian rhythms. The gene products of the period gene in Drosophila and the frequency gene in Neurospora oscillate with a circadian rhythm. A recent paper(1) has shown that the PERIOD protein can undergo both intermolecular and intramolecular interactions in vitro. The effects of temperature and two period mutations on these molecular interactions were compared to the effects of the mutations and temperature on the in vivo period length of circadian rhythms. The results suggest (...) that the molecular interactions may compete to maintain a rhythm with a constant period over a wide temperature range. (shrink)

El filósofo político de la Temprana Edad Moderna, Benedicto Spinoza, es a menudo visto como el padre del método crítico histórico para el estudio de la Biblia. A partir del trabajo de contemporáneos, Spinoza construyó el fundamento metodológico sobre el cual más tarde levantaría la crítica histórica. En este trabajo se examina el trasfondo político de la crítica bíblica de Spinoza, colocando así la obra de Spinoza en su contexto socio-histórico. La Guerra de los Treinta Años y la agitación política (...) en la República holandesa proveen el trasfondo próximo de la teoría política de Spinoza y de su crítica bíblica. (shrink)

Ethics, Policy & Environment, Volume 14, Issue 2, Page 231-237, June 2011.

La pensée de Lévinas, du début jusqu’à la fin, est animée par le souci de libérer le moi du « mal de l’être » – c’est-à-dire, de l’expérience de l’être anonyme et irrémissible, sans fin ni commencement, que Lévinas nomme il y a. Dans les premiers ouvrages , l’autofondation du sujet répond à ce souci, mais cette tentative de libération échoue en tant qu’elle condamne le sujet à la présence toujours présente de lui-même et à sa persévérance dans l’effort d’être. (...) La notion de substitution que développera pleinement Autrement qu’être réussit là où la tentative des premiers ouvrages a échoué. La substitution dans la responsabilité libère la subjectivité mais, selon un paradoxe essentiel, la libère en la rendant otage de l’autre. Si la substitution dans la responsabilité est en effet l’événement de la subjectivation, comme le soutient Lévinas, alors il n’y a pas d’éthique sans libération et pas de libération sans éthique.Levinas’ thought, form start to finish, was animated by a concern for liberation of the self form the « evil of Being » – that is, form the experience of anonymous, irremissible Being without start or finish, which Levins names there is. In the early works , the autofoundation of the subject responds to this concern, but this attempt at liberation falls short as it condemns the subject to the ever present presence of itself and its perseverance in the effort of existing. The notion of substituion, developed most fully in Autrement qu’être, then succeeds xhere the aerlier effort failed. Substitution in responsibility liberates subjectivity, but, according to an essential paradox, liberates it as hostage of the other. If substitution in responsibility is indeed the event of subjectification, as Levinas argues, then there is no ethics without liberation, and no liberation without ethics. (shrink)