We studied collaborative skill acquisition in a dynamic setting with the game Co-op Space Fortress. While gaining expertise, the majority of subjects became increasingly consistent in the role they adopted without being able to communicate. Moreover, they acted in anticipation of the future task state. We constructed a collaborative skill acquisition model in the cognitive architecture ACT-R that reproduced subject skill acquisition trajectory. It modeled role adoption through reinforcement learning and predictive processes through motion extrapolation and learned relevant control parameters (...) using both a reinforcement learning procedure and a new to ACT-R supervised learning procedure. This is the first integrated cognitive model of collaborative skill acquisition and, as such, gives us valuable insights into the multiple cognitive processes that are involved in learning to collaborate. (shrink)

Learning to solve a class of problems can be characterized as a search through a space of hypotheses about the rules for solving these problems. A series of four experiments studied how different learning conditions affected the search among hypotheses about the solution rule for a simple computational problem. Experiment 1 showed that a problem property such as computational difficulty of the rules biased the search process and so affected learning. Experiment 2 examined the impact of examples as instructional tools (...) and found that their effectiveness was determined by whether they uniquely pointed to the correct rule. Experiment 3 compared verbal directions with examples and found that both could guide search. The final experiment tried to improve learning by using more explicit verbal directions or by adding scaffolding to the example. While both manipulations improved learning, learning still took the form of a search through a hypothesis space of possible rules. We describe a model that embodies two assumptions: the instruction can bias the rules participants hypothesize rather than directly be encoded into a rule; participants do not have memory for past wrong hypotheses and are likely to retry them. These assumptions are realized in a Markov model that fits all the data by estimating two sets of probabilities. First, the learning condition induced one set of Start probabilities of trying various rules. Second, should this first hypothesis prove wrong, the learning condition induced a second set of Choice probabilities of considering various rules. These findings broaden our understanding of effective instruction and provide implications for instructional design. (shrink)

Memory should make more available things that are more likely to be needed. Across multiple environmental domains, it has been shown that such a system would match qualitatively the memory effects involving repetition, delay, and spacing (Schooler & Anderson, 2017). To obtain data of sufficient size to study how detailed patterns of past appearance predict probability of being needed again, we examined the patterns with which words appear in large two data sets: tweets from popular sources and comments on popular (...) subreddits. The two data sets show remarkably similar statistics, which are also consistent with earlier, smaller studies of environmental statistics. None of a candidate set of mathematical models of memory do well at predicting the observed patterns in these environments. A new model of human memory based on the environmental model proposed by Anderson and Milson (1989) did better at predicting the environmental data and a wide range of behavioral studies that measure memory availability by probability of recall and speed of retrieval. A critical variable in this model was range, the span of time over which an item occurs, which was discovered in mining the environmental data. These results suggest that theories of memory can be guided by mining of the statistical structure of the environment. (PsycInfo Database Record (c) 2023 APA, all rights reserved). (shrink)

Open‐ended tasks can be decomposed into the three levels of Newell's Cognitive Band: the Unit‐Task level, the Operation level, and the Deliberate‐Act level. We analyzed the video game Co‐op Space Fortress at these levels, reporting both the match of a cognitive model to subject behavior and the use of electroencephalogram (EEG) to track subject cognition. The Unit Task level in this game involves coordinating with a partner to kill a fortress. At this highest level of the Cognitive Band, there is (...) a good match between subject behavior and the model. The EEG signals were also strong enough to track when Unit Tasks succeeded or failed. The intermediate Operation level in this task involves legs of flight to achieve a kill. The EEG signals associated with these operations are much weaker than the signals associated with the Unit Tasks. Still, it was possible to reconstruct subject play with much better than chance success. There were significant differences in the leg behavior of subjects and models. Model behavior did not provide a good basis for interpreting a subject's behavior at this level. At the lowest Deliberate‐Act level, we observed overlapping key actions, which the model did not display. Such overlapping key actions also frustrated efforts to identify EEG signals of motor actions. We conclude that the Unit‐task level is the appropriate level both for understanding open‐ended tasks and for using EEG to track the performance of open‐ended tasks. (shrink)

As local food activities expand and grow, an important question to answer is how various participants contribute to a local food system’s overall vitality and strength. This paper does so by focusing on the relationships between locally-oriented farm and retail actors and assessing what the configuration of these relationships tells us about the workings of the broader local food system. Such an analysis reveals two things. Empirically, it shows the important role food retailers play in the overall vibrancy of local (...) food exchanges: food retailers form crucial links holding the broader system together and significantly expanding consumer access to local foods. Further, different retailer types have distinct impacts on network configurations, each serving particular roles in the development and maintenance of local food systems. Methodologically, this paper shows the value of applying social network analysis techniques to the study of local food systems: such an approach yields insights that may not be as readily assessable from other strategies. In this paper, I overview common network analysis techniques and apply them to a case study of local food activities in New England, suggesting how such an approach might be applied to local food systems in other places. (shrink)

This paper addresses the question of how local can be defined in practice. It contributes to the growing literature on local food systems and particularly our understanding of what counts as local and the elements that influence those contours. While most of our conceptions of local food tend to rely on an articulation of either proximity traveled or relationship between entities, I argue that a more nuanced and complete understanding must take account of both of these aspects. I draw on (...) a dataset of locally oriented farm and food-related establishments in southern New England to identify how far local food travels in this region and how interconnected local food establishments are with one another and use these and other measures to tease out the tension between proximity and relationship as measures of local. I find that these two aspects not only are connected to each other in a complex dynamic, but also are bound up with other structural factors as well. (shrink)

One of the many claims about the value of local food is that local food exchanges generate trust between producers and consumers. To what degree is this actually the case and how does such trust develop? Drawing on interview and fieldwork data in one local food system in the Northeastern U.S., I show how local food participants build trust and reciprocity with one another in order to mitigate the challenges imposed by the conventional system. This trust and reciprocity builds primarily (...) through three mechanisms: reliable, positive relationships; demonstrations of good will toward one another; and a shared understanding of the value of locally-oriented food. Through these mechanisms, local food operators are able to build a healthy, stable local food system, able to better resist the pressures of the conventional system in which it must continually operate. (shrink)

Background The recent proliferation of health care report cards, especially in cardiac care, has occurred in the absence of an ethical framework to guide in their development and implementation. An ethical framework is a consistent and comprehensive theoretical foundation in ethics, and is formed by integrating ethical theories, relevant literature, and other critical information (such as the views of stakeholders). An ethical framework in the context of cardiac care provides guidance for developing cardiac report cards (CRCs) that are relevant and (...) legitimate to all stakeholders. The purpose of this study is to develop an ethical framework for CRCs. Methods Delphi technique – 13 panelists: 2 administrators, 2 cardiac nurses, 5 cardiac patients, 2 cardiologists, 1 member of the media, and 1 outcomes researcher. Panelists' views regarding the ethics of CRCs were analyzed and organized into themes. Results We have organized panelists' views into ten principles that emerged from the data: 1) improving quality of care, 2) informed understanding, 3) public accountability, 4) transparency, 5) equity, 6) access to information 7) quality of information, 8) multi-stakeholder collaboration, 9) legitimacy, and 10) evaluation and continuous quality improvement. Conclusion We have developed a framework to guide the development and dissemination of CRCs. This ethical framework can provide necessary guidance for those generating CRCs and may help them avoid a number of difficult issues associated with existing ones. (shrink)

POHLMAN S, CIBULKA NJ, PALMER JL, LORENZ RA and SMITHBATTLE L. Nursing Inquiry 2013; 20: 71–81 The placebo puzzle: examining the discordant space between biomedical science and illness/healingThe placebo response presents an enigma to biomedical science: how can ‘inert’ or ‘sham’ procedures reduce symptoms and produce physiological changes that are comparable to prescribed treatments? In this study, we examine this puzzle by explicating the discordant space between the prevailing biomedical paradigm, which focuses on a technical understanding of diagnosis and treatment, (...) and a broader understanding of illness and healing as relational and embodied. Although biomedical achievements are impressive, the knowledge resulting from this paradigm is limited by its ontological and epistemological assumptions. When the body and world are objectified, illness meanings, therapeutic relationships, and healing practices are dismissed or distorted. In spite of a robust critique of the tenets of biomedicine for guiding practice, the biomedical paradigm retains a tenacious hold on evidence-based medicine and nursing, downplaying our clinical understanding of the sentient body, patients’ life-worlds, and illness and healing. In reality, skilled nurses rely on multiple forms of knowledge in providing high-quality care to particular patients. Clinically wise nurses integrate their experience and knowledge of patients’ priorities, fears, and illness trajectories along with biomedical findings to make astute judgments and promote health and healing. (shrink)

Psychologists and philosophers who pose moral dilemmas to understand moral judgment typically specify outcomes as certain to occur in them. This contrasts with real-life moral decision-making, which is almost always infused with probabilities (e.g., the probability of a given outcome if an action is or is not taken). Seven studies examine sensitivity to the size and location of shifts in probabilities of outcomes that would result from action in moral dilemmas. We find that moral judgments differ between actions that result (...) in an equal increase in probability of harm (equal size), but have different end-states (e.g., an increase in harm probability from 25% to 50% or from 50% to 75%). This deviation from expected value is robust under separate evaluation, and increases when the comparison between shifts is made explicit under simultaneous evaluation. Consistent with the centrality of perceived harm in some models of moral judgment, perceived harm partially mediates sensitivity to location of harm probability shift. Unlike for shifts in harm probabilities, participants are insensitive to the location of shifts in probability of beneficial outcomes. They are also insensitive to the location of shifts in probability of analogous monetary losses and gains, suggesting an asymmetry between harm and benefit in moral reasoning, as well as an asymmetry between moral and monetary decision-making more broadly. Implications for normative philosophical theory and moral psychological theory, as well as practical applications, are discussed. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Creating a Learning Space That Is Virtual and ExperientialBette E. Schneiderman (bio)The final product of the Rembrandt Project will be a Web site that is intended primarily for use by middle and high school teachers and their students. It is a celebration of Rembrandt’s work in the contexts of his time, place, and culture and all that may emanate from them. A special feature of the site is the (...) integration of art, aesthetic, and social studies education. Other articles in this issue address the rich content of the project’s work, that is, the artworks themselves, their contextual grounding, and the development of skills that maximize learning. This article looks at the creation of a learning space as a home for the development of the project. It explores issues related to learning spaces and features some of the technologies that can be used within them.The Rembrandt Project will not be a Web site that merely flattens images on a computer screen or conveys facts about Rembrandt and his oeuvre. Rather, it is a portal to a learning place with online features and opportunities for learners to have transformative experiences. Learning may occur online in electronic conversations, in opportunities to view and respond to reproductions in collections that cannot be visited in person, and in the creation and display of learners’ products. Learning is facilitated by access to a range of resources and people. Numerous announcements of activities, events, and products will be posted on the site. Some individuals will work in the space of the works themselves while others might undertake learning activities in museums, galleries, and private homes. In some cases special programs will highlight certain works and relate them to the project. Images of places in the Netherlands will also be presented with accompanying learning opportunities for those who may wish to see the paintings in person or simply ponder their influence from afar. All participants will be encouraged to share creations and reflections on the site. [End Page 38]To provide a sense of what this article is about, three cases are presented, each with two scenarios and a sample online discussion. The purpose of these cases is to draw readers into the experience of a virtual learning space before discussing contemporary learning communities, learning spaces, and technologies. The cases will show how to develop lively democratic conversation that makes communal learning possible. Participants can be of all kinds, from experts to those who simply want to learn. They can be located anywhere and participate at whatever time suits them best.Case A: Two ScenariosScenario 1: Viewing a Masterwork by RembrandtStanding before a work by Rembrandt you are drawn into its space. If you have viewed a Rembrandt in the past, recall your experience. If not, perhaps you might want to travel to a place that has one of his works or access some of his images online.1 Or you might think about a work of art that aroused your interest and prompted you to ponder its import and ask questions. Perhaps you returned to the work many times, experiencing it more deeply and differently upon each visit. What is it, specifically, about the encounter that resulted in a satisfying experience? And what changed the moment you viewed the work in a book reproduction, a slide, or a digitized image on a computer? In pursuing its purposes, the Rembrandt Project explores ways multiple skills can help maximize the experience of a wide range of works both online and off. Case A, Scenario 1, will set the stage for an experience with the work itself.Scenario 2: Viewing a Masterwork OnlineSelect a major work by Rembrandt online.2 What makes experiencing this image worthwhile, despite the fact that certain aspects cannot be captured in this flat digitized space? Upon reflecting on these scenarios, thoughts about experiencing the work may be recorded and discussed with others.3Case B: Two ScenariosScenario 1: An Experience of a LandscapeImagine wandering through an open field, tingled by a gentle breeze, warmed by the sun, refreshed by the aromas of moist grasses, mixed flowers, and the woody smells of trees. A village, visible... (shrink)

Growth in CSR-washing claims in recent decades has been dramatic in numerous academic and activist contexts. The discourse, however, has been fragmented, and still lacks an integrated framework of the conditions necessary for successful CSR-washing. Theorizing successful CSR-washing as the joint occurrence of five conditions, this paper undertakes a literature review of the empirical evidence for and against each condition. The literature review finds that many of the conditions are either highly contingent, rendering CSR-washing as a complex and fragile outcome. (...) This finding runs counter to the dominant perception in the general public, among activists, and among a vocal contingent of academics that successful CSR-washing is rampant. (shrink)

This interdisciplinary study explores the relevance and application of Martin Heidegger’s phenomenology to key issues in the philosophy film. It develops a comprehensive look at how Heidegger’s thought illuminates historical and contemporary problems the film medium poses to philosophers.

In the aftermath of World War II, the government of the United States provided considerable funding for military projects that promised to provide a technological edge during the nascent Cold War. The most famous example is likely the V-2 rocket-testing program that began in the late 1940s. The 67 rockets launched from White Sands developed a knowledge base that was critically important to the launch of the first U.S. satellite in 1958 and to the subsequent manned space program. Less well (...) known are the large-scale information technology projects, undertaken in the 1950s and early 1960s, that provided a significant catalyst for research into digital computing, information processing, and the. (shrink)

Augmentative and alternative communication brain-computer interface systems are intended to offer communication access to people with severe speech and physical impairment without requiring volitional movement. As the field moves toward clinical implementation of AAC-BCI systems, research involving participants with SSPI is essential. Research has demonstrated variability in AAC-BCI system performance across users, and mixed results for comparisons of performance for users with and without disabilities. The aims of this systematic review were to describe study, system, and participant characteristics reported in (...) BCI research, summarize the communication task performance of participants with disabilities using AAC-BCI systems, and explore any differences in performance for participants with and without disabilities. Electronic databases were searched in May, 2018, and March, 2021, identifying 6065 records, of which 73 met inclusion criteria. Non-experimental study designs were common and sample sizes were typically small, with approximately half of studies involving five or fewer participants with disabilities. There was considerable variability in participant characteristics, and in how those characteristics were reported. Over 60% of studies reported an average selection accuracy ≤70% for participants with disabilities in at least one tested condition. However, some studies excluded participants who did not reach a specific system performance criterion, and others did not state whether any participants were excluded based on performance. Twenty-nine studies included participants both with and without disabilities, but few reported statistical analyses comparing performance between the two groups. Results suggest that AAC-BCI systems show promise for supporting communication for people with SSPI, but they remain ineffective for some individuals. The lack of standards in reporting outcome measures makes it difficult to synthesize data across studies. Further research is needed to demonstrate efficacy of AAC-BCI systems for people who experience SSPI of varying etiologies and severity levels, and these individuals should be included in system design and testing. Consensus in terminology and consistent participant, protocol, and performance description will facilitate the exploration of user and system characteristics that positively or negatively affect AAC-BCI use, and support innovations that will make this technology more useful to a broader group of people.Clinical trial registrationhttps://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42018095345, PROSPERO: CRD42018095345. (shrink)

Will stakeholder theory continue to transform how we think about business and society? On the occasion of this journal’s 60th anniversary, this review article examines the journal’s role in shaping stakeholder theory to date and suggests that it still has transformative potential. We conducted a bibliometric analysis of co-citations in the literature from 1984 to 2020. Reporting these results, we examine the field’s evolving structure. Contextualized theoretically as an accomplishment of institutional work—the creation of a meaningful and innovative field ideology—this (...) structure is remarkable for how it integrates ethical and behavioral arguments, invites engagement from adjacent domains, and arrives at important insights for business and society. We advance a research agenda consistent with this larger institutional project. (shrink)

Currently, an increasing number of organizations are attempting to enhance inclusiveness of under represented individuals through proactive efforts to manage their diversity. In this article, we define diversity management against the backdrop of its predecessor, affirmative action. Next, selected examples of organizations that have experienced specific positive bottom line results from diversity management strategies are discussed. The present paper also provides a conceptual model to examine antecedents and consequences of effective diversity management. Additional research areas identified from the model and (...) literature review result in a number of research propositions intended to enhance the exploration and understanding of diversity management. (shrink)

Suicide among Veterans experiencing or at risk for homelessness remains a significant public health concern. Conducting research to understand and meet the needs of this at-risk population remains challenging due to myriad factors. To address this challenge, the United States Department of Veterans Affairs convened the Health Services Research and Development Suicide Prevention in Veterans Experiencing Homelessness: Research and Practice Development meeting, bringing together subject-matter experts in the fields of homelessness and suicide prevention, both from within and outside of VA. (...) During the meeting, attendees identified 10 potential research priorities at the intersection of suicide prevention and homelessness. After the meeting, Delphi methodology was used to achieve consensus on the relative importance of the identified research domains. Through this iterative Delphi process, agreement was reached regarding the need to increase understanding of barriers and facilitators to suicide risk assessment and emergency intervention for Veterans experiencing homelessness by examining the perspectives of both Veterans and healthcare providers. Elucidating the complex relationships between risk periods, subgroups, suicide means, and drivers of suicide among Veterans experiencing homelessness was also considered a top priority. This article documents the Delphi process and provides a research agenda for researchers, funding agencies, and policymakers to prioritize the most relevant and potentially impactful research domains aimed at preventing suicide among Veterans experiencing or at risk for homelessness. (shrink)

BackgroundRecent advancements in neuroscientific techniques have allowed us to make huge progress in our understanding of memories, and in turn has paved the way for new memory modification technologies that can modulate memories with a degree of precision, which was not previously possible. With advancements in such techniques, new and critical ethical questions have emerged. Understanding and framing these ethical questions within the current philosophical theories is crucial in order to systematically examine them as we translate these techniques to the (...) clinic.Main bodyIn this paper, we discuss the ethical implications of modern neuroscience techniques that aim to disrupt or enhance memories. We attempt to frame the MMTs in the context of existing ethical philosophical theories to provide a cohesive analysis of the myriad of ethical quagmires that might emerge from such technologies. We argue the application of Aristotle’s Golden Mean and multiple accounts of authenticity are useful in approaching the ethical questions surrounding MMTs. We then propose a framework in which ethical considerations can be systematically examined. Lastly, we provide caveats and considerations for the use of this framework. Overall, we provide a practical approach for the ethical use of MMTs depending on the situation.ConclusionWhile at face value, our model appears to put severe limitations on the application of MMTs, we are not completely opposed to their use, but rather our framework guides the agent to consider the implications before making any decisions. Most importantly, we argue that the use of MMTs does not reduce the responsibility of the initial decision, and the agent must accept the post-MMT self as the new “true self” regardless of the outcome. As the developmental trajectory of MMTs suggests we are getting closer to practical clinical applications, ethical concerns across a wide range of disciplines need to be addressed to develop best strategies and policies when dealing with MMTs. If this can be achieved, we believe the ethical use of MMTs is not only possible but would also be of tremendous benefit to many people suffering from memory-related mental disorders. (shrink)

The ability to reason and think in a logical manner forms the basis of learning for most mathematics, computer science, philosophy and logic students. Based on the author's teaching notes at the University of Maryland and aimed at a broad audience, this text covers the fundamental topics in classical logic in an extremely clear, thorough and accurate style that is accessible to all the above. Covering propositional logic, first-order logic, and second-order logic, as well as proof theory, computability theory, and (...) model theory, the text also contains numerous carefully graded exercises and is ideal for a first or refresher course. (shrink)

This article examines the significance of cultural practices related to food and women's role in the formation and continuance of these practices in Gullah communities in the Sea Islands of Georgia and South Carolina. I argue that although food preparation, under pressure of dominant cultural practices, may be viewed as a measure of gender inequality and women's subordination in the household, analysis of the relationship between women and food preparation practices can broaden understanding of the construction and maintenance of tradition (...) in marginalized cultural groups, a neglected aspect of the study of social organization within sociology. The study uses ethnographic data based on field observations and semistructured interviews with 22 women over several visits made between 1989 and 1992. (shrink)

What was it like to be a practitioner of Pyrrhonist skepticism? This important volume brings together for the first time a selection of Richard Bett's essays on ancient Pyrrhonism, allowing readers a better understanding of the key aspects of this school of thought. The volume examines Pyrrhonism's manner of self-presentation, including its methods of writing, its desire to show how special it is, and its use of humor; it considers Pyrrhonism's argumentative procedures regarding specific topics, such as signs, space, or (...) the Modes; and it explores what it meant in practice to live as a Pyrrhonist, including the kind of ethical outlook which Pyrrhonism might allow and, in general, the character of a skeptical life - and how far these might strike us as feasible or desirable. It also shows how Pyrrhonism often raises questions that matter to us today, both in our everyday lives and in our philosophical reflection. (shrink)

According to the response-dependence view of moral responsibility, a person is morally responsible just in case, and in virtue of the fact that, she is an appropriate target for reactive attitudes. This paper raises a new puzzle regarding response-dependence: there is a mismatch between the granularity of the reactive attitudes and of responsibility facts. Whereas the reactive attitudes are comparatively coarse-grained, responsibility facts can be quite fine-grained. This poses a challenge for response-dependence, which seeks to ground facts about responsibility in (...) facts about the reactive attitudes. Specifically, reactive attitudes are not enough for grounding facts about degrees of moral responsibility. The responsedependence view thus requires significant revisions or supplementations. (shrink)

There appears to be few, if any, limits on what sorts of logical connectives can be added to a given logic. One source of potential limitations is the motivating ideology associated with a logic. While extraneous to the logic, the motivating ideology is often important for the development of formal and philosophical work on that logic, as is the case with intuitionistic logic. One family of logics for which the philosophical ideology is important is the family of relevant logics. In (...) this paper, I explore the limits of what a relevant connective is, showing how some basic criteria motivated by the ideology of relevant logicians provide robust limits on potential connectives. These criteria provide some plausible necessary conditions on being a relevant connective. (shrink)

Originally published in 1925, this book provides an overview of the philosophy of Johannes Scotus Erigena. Bett explains Erigena's thinking as well as the influence he had over later philosophers, despite the fact that his writings were banned by the Pope. This book will be of value to anyone with an interest in medieval philosophy and Erigena's philosophy in particular.

This work presents a new, alternative approach to studying the formation of political ideologies and attitudes, addressing a concern in political science that research in this area is at a crossroads. The authors provide an epistemologically grounded critique on the literature of belief systems, explaining why traditional approaches have reached the limits of usefulness. Following the lead of such continental theorists such as Jurgen Habermas and Anthony Giddens, who stress the importance of Jean Piaget to the development of a strong (...) theoretical perspective in political psychology, the authors develop a different epistemology, theory,and research strategy based on Piaget, then apply it in two emperical studies of belief systems, and finally present a third theoretical study of political culture and political development. (shrink)

Aquinas claims that sacred doctrine is a science, or scientia. All scientiae involve demonstrations containing principles which yield conclusions that are necessary and certain. The principles leading to sacred scientia are the articles of faith. Those articles are contained in Scripture and constitute the premises of demonstrations the conclusions of which form sacred doctrine's content. Because of those articles' divine origin, we can expect them to yield conclusions the truth of which is guaranteed. According to William Abraham, however, Aquinas must (...) demonstrate Scripture's divine origin as a condition for achieving a sacred scientia. In the absence of such a demonstration, we cannot be certain that the articles contained in Scripture are God‐breathed, nor can we be certain that the conclusions deduced from them belong to sacred doctrine. Abraham argues that Aquinas's putative demonstration of Scripture's divine origin fails and—consequently—so does his attempt to establish a sacred scientia. In this paper, I will show that Aquinas never intended to provide such a demonstration, nor does he need to in order to secure sacred doctrine's status as a scientia. Furthermore, I will show that achieving sacred scientia is not, pace Abraham, an epistemological undertaking but a spiritual discipline that eventuates in knowledge of and love for God. (shrink)

In relevant logics, necessary truths need not imply each other. In justification logic, necessary truths need not all be justified by the same reason. There is an affinity to these two approaches that suggests their pairing will provide good logics for tracking reasons in a fine-grained way. In this paper, I will show how to extend relevant logics with some of the basic operators of justification logic in order to track justifications or reasons. I will define and study three kinds (...) of frames for these logics. For the first kind of frame, I show soundness and highlight a difficulty in proving completeness. This motivates two alternative kinds of frames, with respect to which completeness results are obtained. Axioms to strengthen the justification logic portions of these logics are considered. I close by developing an analogy between the dot operator of justification logic and theory fusion in relevant logics. (shrink)

Emerging from the growing swell of recent literature concerning Kant's practical philosophy, one interpretation of his procedure for testing maxims has crested above others. The influential interpretation to which I refer believes that the categorical imperative guides a procedure that finds maxims impermissible when they cannot be universalized without producing a 'practical' contradiction. As a major proponent of the practical contradiction interpretation, Christine Korsgaard claims that, while there is textual support for this point of view, she is more concerned with (...) developing a defensible interpretation of maxim testing for a ‘Kantian’ system of morality. Accordingly, one cannot simply attempt to evaluate such a theory solely by considering its various incongruities with Kant's specific claims and arguments. Instead, my evaluation of the practical contradiction interpretation will examine: whether it is a procedure that is applicable to a full range of maxims; whether it maintains a distinct advantage over the alternative readings; and whether it is an internally coherent and consistent model for testing maxims. I propose, here, that regardless of the practical contradiction test's many advantages, it fails with regard to all three of these questions. (shrink)

In this paper, we build on earlier work by Standefer (Logic J IGPL 27(4):543–569, 2019) in investigating extensions of substructural logics, particularly relevant logics, with the machinery of justification logics. We strengthen a negative result from the earlier work showing a limitation with the canonical model method of proving completeness. We then show how to enrich the language with an additional operator for implicit commitment to circumvent these problems. We then extend the logics with axioms for D, 4, and 5, (...) which requires additional justification term operators, following the work of Pacuit (in proceedings of the fifth panhellenic logic symposium, 2005) and Rubtsova (in Grigoriev D, Harrison J (eds) Computer science—theory and applications, CSR 2006; J Logic Comput 16(5):671–684, 2006), and present the required modifications to the frame semantics. We present a simplification of the neighborhood frames from the earlier work and we close by investigating the distinctive contribution of the + operator to the logic. (shrink)

In this paper, I develop some internal problems with Alvin Plantanga's proper functionalist epistemology. I focus on: (1) how we know that a belief is the result of proper function and the special difficulties this occasions for religious beliefs; (2) what a properly functioning person should believe in various circumstances, and (3) the problem of design -- whether the claim that God designed us can be reconciled with the claim that He was subject to trade-offs, compromises and unintended by-products. These (...) serious internal problems cast doubt upon proper functionalism's fruitfulness as a theory of knowledge. (shrink)