This article presents a process account of some typicality effects and related similarity-dependent accuracy and response time phenomena that arise in the context of supervised concept acquisition. We describe Symbolic Concept Acquisition (SCA), a computational system that acquires and activates category prediction rules. In contrast to gradient representations, SCA performs by probing for prediction rules in a series of discrete steps. For learning new rules, it acquires general rules but then incrementally learns more specific ones. In describing SCA, we emphasize (...) its functionality in terms of accuracy and efficiency and motivate its design within the set of symbolic mechanisms and memory structures defined by the Soar architecture (Laird, Newell & Rosenbloom, 1987). For replicating human behavior, we first show how SCA exhibits some typicality effects in the course of learning responding faster and more accurately to more typical test examples. Then, using data from human experiments, we evaluate SCA's qualitative predictions on accuracy and response time on individual dataset instances. We show how SCA's predictions correlate with human data across three experimental conditions concerning the effect of instruction on learning strategy. (shrink)

We explored the consequences for learning through interaction with an educational microworld called Electric Field Hockey (EFH). Like many microworlds, EFH is intended to help students develop a qualitative understanding of the target domain, in this case, the physics of electrical interactions. Through the development and use of a computer model that learns to play EFH, we analyzed the knowledge the model acquired as it applied the game‐oriented strategies we observed physics students using. Through learning‐by‐doing on the standard sequence of (...) tasks, the model substantially improved its EFH playing ability; however, it did so without acquiring any new qualitative physics knowledge. This surprising result led to an experiment that compared students' use of EFH with standard‐goal tasks against two alternative instructional conditions, specific‐path and no‐goal, each justified from a different learning theory. Students in the standard‐goal condition learned less qualitative physics than did those in the two alternative conditions, which was consistent with the model. The implication for instructional practice is that careful selection and analysis of the tasks that frame microworld use is essential if these programs are to lead to the learning outcomes imagined for them. Theoretically, these results suggest a new interpretation for numerous empirical findings on the effectiveness of no‐goal instructional tasks. The standing “reduced cognitive load” interpretation is contradicted by the success of the specific‐path condition, and we offer an alternative knowledge‐dependent interpretation. (shrink)

This book updates and adds to the classic Social Movements of the Sixties and Seventies, showing how social movement theory has grown and changed.

This article reports four subliminal perception experiments using the relationship between confidence and accuracy to assess awareness. Subjects discriminated among stimuli and indicated their confidence in each discrimination response. Subjects were classified as being aware of the stimuli if their confidence judgments predicted accuracy and as being unaware if they did not. In the first experiment, confidence predicted accuracy even at stimulus durations so brief that subjects claimed to be performing at chance. This finding indicates that subjects's claims that they (...) are ''just guessing'' should not be accepted as sufficient evidence that they are completely unaware of the stimuli. Experiments 2-4 tested directly for subliminal perception by comparing the minimum exposure duration needed for better than chance discrimination performance against the minimum needed for confidence to predict accuracy. The latter durations were slightly but significantly longer, suggesting that under certain circumstances people can make perceptual discriminations even though the information that was used to make those discriminations is not consciously available. (shrink)

The traditional view of divine conservation holds that it is simply a continuation of the initial act of creation. In this essay, I defend the continuous-creation tradition against William Lane Craig's criticism that continuous creation fundamentally misconstrues the intuitive distinction between creation and conservation. According to Craig, creation is the unique causal activity of bringing new patient entities into existence, while conservation involves acting upon already existing patient entities to cause their continued existence. I defend continuous creation by (...) challenging Craig's intuitive distinction and by showing that the alternative account of creation and conservation he bases upon it is fraught with serious internal difficulties. (shrink)

The question of whether faith in God is reasonable is of renewed interest in today’s academy. In light of this interest, as well as the rise of militant religion and terrorism and the emergent reaction by neo-atheism, this volume considers this important question from the views of contemporary scientists, philosophers, and in a more novel fashion, of rhetoricians. It is comprised of a public debate between William Lane Craig, supporting the position that faith in God is reasonable and Alex (...) Rosenberg, arguing against that position. Scholars in the aforementioned fields then respond to the debate, representing both theistic and atheistic positions. The book concludes with rejoinders from Craig and Rosenberg. (shrink)

I defend and revise the systematic account of normative functions (teleofunctions), as recently developed by Gerhard Schlosser and by W. D. Christensen and M. H. Bickhard. This account proposes that teleofunctions are had by structures that play certain kinds of roles in complex systems. This theory is an alternative to the historical etiological account of teleofunctions, developed by Ruth Millikan and others. The historical etiological account is susceptible to a general ontological problem that has been under-appreciated, and that offers important (...) reasons to adopt the systematic account. However, the systematic account must be revised to allow for two distinct kinds of teleofunctions in order to avoid another ontological problem. (shrink)

"The Rules" are found in a collaborative document that states principles for responsibility when a computer artifact is designed, developed and deployed into a sociotechnical system. At this writing, over 50 people from nine countries have signed onto The Rules. Unlike codes of ethics, The Rules are not tied to any organization, and computer users as well as computing professionals are invited to sign onto The Rules. The emphasis in The Rules is that both users and professionals have responsibilities in (...) the production and use of computing artifacts. In this paper, we use The Rules to examine issues of trust. (shrink)

The errors young children make when recognising others’ emotions may be systematic over-identification biases and may partially explain the challenges some have socially. These biases and associations may be differential by emotion. In a sample of 871 ethnically and racially diverse preschool-aged children (i.e. 33–68 months; 49% Hispanic/Latine, 52% Children of Colour), emotion recognition was assessed, and scores for accuracy and bias were calculated by emotion (i.e. anger, sad, happy, calm, and fear). Child and family characteristics and teacher-reported social behaviour (...) were also collected. Multilevel structural equation modelling revealed emotion-specific recognition accuracies varied between 36 and 65% whereas biases varied between 4 and 13%. Anger was the strongest bias followed by sad, happy, fear, and calm, in contrast to the pattern for accuracy – happy, sad, angry, fear, and calm. More variance was explained in emotion-specific recognition accuracies by child and family characteristics – 7–38% – than biases – 3–7%. Negatively-valanced emotion recognition biases associated with positively-valanced accuracies, and positively-valued emotion recognition biases associated with negatively-valued accuracies. Biases did not have meaningful associations with social behaviour. This study highlights that children’s emotion recognition errors may partially be systematic, but future studies are needed to understand the underlying cognitive mechanisms. (shrink)

Recent evidence on intertemporal choice suggests that decision-makers may exhibit both increasing and decreasing impatience simultaneously, called inverse-S discounting. This paper introduces trichotomic discounted utility to model inverse-S discounting. Under trichotomic discounted utility the decision-maker distinguishes between short-term delays, medium-term delays, and long-term delays. Exponential discounting holds within each category, but not necessarily across each category. We provide preference foundations for trichotomic discounted utility in the timed outcomes framework and in the consumption streams framework. The key axiom is a weakening (...) of the time consistency axiom that allows for both increasing and decreasing impatience. We also consider a weak, local version of time consistency, and show that this plausible condition is satisfied only by discount functions with exponential “pieces”. (shrink)

This article analyzes the origins of the “responsible corporate officer” doctrine: the trial of Joseph Dotterweich. That doctrine holds that an officer may be personally liable for the criminal act of a subordinate if the officer was, in some indefinite way, able to prevent the violation. Applying this doctrine, the prosecution of Dotterweich entailed strict liability for a strict liability offense. The underlying offenses—the interstate sale of one misbranded and adulterated drug and one misbranded drug—were said to be strict liability (...) offenses. And then, with respect to Dotterweich as the corporation’s general manager, the government argued that he was strictly liable because he stood in “responsible relation” to the company’s acts. The government never tried to prove that the company, Buffalo Pharmacal, was negligent, nor did it try to prove that Dotterweich was negligent in his supervision of the employees of Buffalo Pharmacal. The prosecutor and judge were candid about this theory throughout the trial, although the judge conceded that it seemed bizarre and unfair. The defense lawyer repeatedly sought to inject what became known throughout the trial as the “question of good faith,” but was circumvented at almost every turn. What would thus seem to be the crux of any criminal trial—the personal fault of the defendant—was carefully shorn from the jury’s consideration. The government’s theory was so at odds with intuitive notions of liability and blame that, as one probes into the case, and looks at the language used in the government’s appellate briefs, imputations of moral fault inevitably crept in. Yet the government was not entitled to make such accusations, as it had pruned moral considerations from the trial. The article argues that the responsible corporate officer doctrine can never enjoy a secure place in our legal system. First, the doctrine is at a minimum in tension with, and often in direct opposition to, basic principles of the criminal law; and second, the doctrine fails, when followed to its logical conclusions, to accord with basic notions of fair play. The article concludes that the responsible corporate officer doctrine is either unnecessary, in cases in which the evidence establishes personal fault, or unjust, in cases in which it creates liability in the absence of personal fault through the unspecified notion of “responsibility.” The Dotterweich case illustrates what is contemplated by the latter possibility, and why it is problematic in any judicial system that purports, in the words of the Model Penal Code, “to safeguard conduct that is without fault from condemnation as criminal.”. (shrink)

The publication in theJournal of the American Medical Association of a narrative entitled “It's Over, Debbie,” in which a gynecology resident apparently performs euthanasia, has stirred considerable debate characterized by varying interpretations not only of the ethical issues involved but of the meaning of the text itself. Formal analysis reveals the narrative to be strikingly literary in its ambiguity, its foregrounding of its own textuality, and its dominant structure of repetition and reversal. The analysis points to features that account for (...) some of the varying interpretations in the debate, and it calls into question the relation of the text to whatever events it may represent and to how the resident may have perceived these events. (shrink)

We contend that software developers have an ethical responsibility to strive for reliable software. We base that obligation on long standing engineering traditions that place the public good as a central tenant and on the professional relationship between a software developer and the users of the software developed.

As software developers design artificial agents , they often have to wrestle with complex issues, issues that have philosophical and ethical importance. This paper addresses two key questions at the intersection of philosophy and technology: What is deception? And when is it permissible for the developer of a computer artifact to be deceptive in the artifact’s development? While exploring these questions from the perspective of a software developer, we examine the relationship of deception and trust. Are developers using deception to (...) gain our trust? Is trust generated through technological “enchantment” warranted? Next, we investigate more complex questions of how deception that involves AAs differs from deception that only involves humans. Finally, we analyze the role and responsibility of developers in trust situations that involve both humans and AAs. (shrink)

Purpose This paper aims to explore the ethical and social impact of augmented visual field devices, identifying issues that AVFDs share with existing devices and suggesting new ethical and social issues that arise with the adoption of AVFDs. Design/methodology/approach This essay incorporates both a philosophical and an ethical analysis approach. It is based on Plato’s Allegory of the Cave, philosophical notions of transparency and presence and human values including psychological well-being, physical well-being, privacy, deception, informed consent, ownership and property and (...) trust. Findings The paper concludes that the interactions among developers, users and non-users via AVFDs have implications for autonomy. It also identifies issues of ownership that arise because of the blending of physical and virtual space and important ways that these devices impact, identity and trust. Practical implications Developers ought to take time to design and implement an easy-to-use informed consent system with these devices. There is a strong need for consent protocols among developers, users and non-users of AVFDs. Social implications There is a social benefit to users sharing what is visible on their devices with those who are in close physical proximity, but this introduces tension between notions of personal privacy and the establishment and maintenance of social norms. Originality/value There is new analysis of how AVFDs impact individual identity and the attendant ties to notions of ownership of the space between an object and someone’s eyes and control over perception. (shrink)

A twenty‐person working group convened to discuss the ethical and policy considerations of the controversial intervention called “growth attenuation,” and if possible to develop practical guidance for health professionals. A consensus proved elusive, but most of the members did reach a compromise.

In this essay we argue that the current social and ethical structure in the Open Source Software Community stem from its roots in academia. The individual developers experience a level of autonomy similar to that of a faculty member. Furthermore, we assert that the Open Source Software Community’s social structure demands benevolent leadership. We argue that it is difficult to pass off low quality open source software as high quality software and that the Open Source development model offers strong accountability. (...) Finally, we argue that Open Source Software introduces ethical challenges for universities and the software development community. (shrink)

We consider embeddings of structures which preserve spectra: if g: M → S with S computable, then M should have the same Turing degree spectrum (as a structure) that g(M) has (as a relation on S). We show that the computable dense linear order L is universal for all countable linear orders under this notion of embedding, and we establish a similar result for the computable random graph G. Such structures are said to be spectrally universal. We use our results (...) to answer a question of Goncharov, and also to characterize the possible spectra of structures as precisely the spectra of unary relations on G. Finally, we consider the extent to which all spectra of unary relations on the structure L may be realized by such embeddings, offering partial results and building the first known example of a structure whose spectrum contains precisely those degrees c with c′ ≥T 0″. (shrink)

Experimental studies suggest that individuals exhibit more risk aversion in choices among prospects when the payment and resolution of uncertainty are immediate relative to when it is delayed. This leads to preference reversals that cannot be attributed to discounting. When data suggest that utility is time-independent, probability weighting functions, such as those used to model prospect theory preferences, can accommodate such reversals. We propose a simple descriptive model with a two-parameter probability weighting function where one of these parameters depends on (...) the time at which a prospect is resolved. The time-dependent parameter is responsible for the curvature of the probability weighting function and is regarded as an index of sensitivity towards changes in probabilities. We provide conditions that characterize increased sensitivity towards more distant probabilities; this can account for the observed relatively less risk aversion towards delayed prospects. In our framework, the discount function is unrestricted, such that the model is compatible with empirical findings of non-constant discounting. In a simple application to bargaining we illustrate when it is advantageous for an individual to advance or delay the bargaining resolution time if an opponent displays increased sensitivity towards probability changes with delay. (shrink)

Fiduciary law is one of the most important areas of private law, governing a wide range of relationships that affect people in their daily lives. These new and innovative essays explore the foundations of fiduciary relationships and the duties fiduciaries owe to their beneficiaries.

Martha A. Hall’s artists’ books documenting her experience of living with breast cancer offer future health professionals a unique opportunity to sit in the patient’s position of vulnerability and fear. Hall’s books have become a cornerstone of our medical humanities pedagogy at the Maine Women Writers Collection because of their emotional directness and their impact on readers. This essay examines the ways that Hall’s call for conversation with healthcare providers is enacted at the University of New England and provides a (...) model for how such works might be used at other educational institutions to encourage empathy between practitioners and patients by engaging in conversations about anger, fear, and other common reactions to life-threatening illness. We explore the unruly nature of Martha A. Hall’s narratives of illness and care, as well as how the form of the books themselves engages the reader in a deep relationship with Hall’s personal pain and her humanity itself. We explore, too, the cumulative effect of these powerful books on readers who handle them regularly, as we do in our roles as professor and archivist. (shrink)

There is a growing literature on the concept of e-trust and on the feasibility and advisability of “trusting” artificial agents. In this paper we present an object-oriented model for thinking about trust in both face-to-face and digitally mediated environments. We review important recent contributions to this literature regarding e-trust in conjunction with presenting our model. We identify three important types of trust interactions and examine trust from the perspective of a software developer. Too often, the primary focus of research in (...) this area has been on the artificial agents and the humans they may encounter after they are deployed. We contend that the humans who design, implement, and deploy the artificial agents are crucial to any discussion of e-trust and to understanding the distinctions among the concepts of trust, e-trust and face-to-face trust. (shrink)

Self-regulation in early childhood is an important predictor of success across a variety of indicators in life, including health, well-being, and earnings. Although conceptually self-regulation has been defined as multifaceted, previous research has not investigated whether there is conceptual and empirical overlap between the factors that comprise self-regulation or if they are distinct. In this study, using a bifactor model, we tested the shared and unique variance among self-regulation constructs and prediction to pre-academic and social-emotional skills. The sample included 932 (...) preschool children, their parents, and their teachers in the United States. Children’s self-regulation was assessed using measures of executive function, behavioral self-regulation, and emotion regulation. The bifactor model demonstrated a common overarching self-regulation factor, as well as distinct executive function and emotion regulation factors. The common overarching self-regulation factor and executive function predicted children’s pre-academic and social-emotional skills. The emotion regulation factor predicted children’s social-emotional skills. Identifying the shared and unique aspects of self-regulation may have important implications for supporting children’s regulatory skills as well as their success in school. (shrink)

Neurofilaments are one of the major components of the neuronal cytoskeleton and are responsible for maintaining the calibre of axons. They are modified by post‐translational changes that are regulated in complex fashions including by the interaction with neighbouring glial cells. Neurofilament accumulations are seen in several neurological diseases and neurofilament mutations have now been associated with Charcot‐Marie‐Tooth disease, Parkinson's disease and amyotrophic lateral sclerosis. In this review, we discuss the structure, normal function and molecular pathology of neurofilaments. BioEssays 25:346–355, 2003. (...) © 2003 Wiley Periodicals, Inc. (shrink)

What is the nature of law? Does our obligation to obey the law extend to unjust laws? From what source do lawmakers derive legitimate authority? What principles should guide us in the design of political institutions? The essays in this collection, written by prominent contemporary philosophers, explore how these questions were addressed by ancient political thinkers, including the Pre-Socratics, Plato, Aristotle, and the Stoics and Epicureans. Classical theories of human nature and their implications for political theory are examined, as is (...) the meaning of freedom and coercion in Plato's thought. Plato's idea that philosophers should be political rulers receives scrutiny, too. Other essays ask what we can learn from ancient thinkers like Aristotle about the principles of constitutional design or the limits of political obligation. (shrink)

Which factors influence the folk application of the concept of causation? Knobe has argued that causal judgments are primarily influenced by the moral valence of the behavior under consideration. Whereas Driver has pointed out that the data Knobe relies on can also be used to support the claim that it is the atypicality of the agent's behavior that influences our willingness to assign causality to that agent. While Knobe and Fraser have provided a further study to address the cogency of (...) this alternative explanation, we argue that they have not provided a complete analysis. We present a variation on this study that addresses the relation between atypical and moral considerations as they contribute to the application of the concept causation. Our results indicate that atypicality cannot be ignored in an analysis of the folk concept of causation. That is, Knobe and Fraser's response to Driver is inadequate. (shrink)