The paper is concerned with the psychological relevance of a logical model for deductive reasoning. We propose a new way to analyze logical reasoning in a deductive version of the Mastermind game implemented within a popular Dutch online educational learning system (Math Garden). Our main goal is to derive predictions about the difficulty of Deductive Mastermind tasks. By means of a logical analysis we derive the number of steps needed for solving these tasks (a proxy for working (...) memory load). Our model is based on the analytic tableaux method, known from proof theory. We associate the difficulty of Deductive Mastermind game-items with the size of the corresponding logical trees obtained by the tableaux method. We derive empirical hypotheses from this model. A large group of students (over 37 thousand children, 5–12 years of age) played the Deductive Mastermind game, which gave empirical difficulty ratings of all 321 game-items. The results show that our logical approach predicts these item ratings well, which supports the psychological relevance of our model. (shrink)

Over the years a lot of easily computable strategies for the game mastermind have been proposed. One of the obvious strategies, guess that code that has the most possible answers, has been lacking. It is discussed in this paper.

I consider the natural infinitary variations of the games Wordle and Mastermind, as well as their game‐theoretic variations Absurdle and Madstermind, considering these games with infinitely long words and infinite color sequences and allowing transfinite game play. For each game, a secret codeword is hidden, which the codebreaker attempts to discover by making a series of guesses and receiving feedback as to their accuracy. In Wordle with words of any size from a finite alphabet of n (...) letters, including infinite words or even uncountable words, the codebreaker can nevertheless always win in n steps. Meanwhile, the mastermind number, defined as the smallest winning set of guesses in infinite Mastermind for sequences of length ω over a countable set of colors without duplication, is uncountable, but the exact value turns out to be independent of, for it is provably equal to the eventually different number, which is the same as the covering number of the meager ideal. I thus place all the various mastermind numbers, defined for the natural variations of the game, into the hierarchy of cardinal characteristics of the continuum. (shrink)

Two experiments examined the role of conditional reasoning in the logical deduction game, Mastermind . An analysis suggested that Modus Tollens (MT) reasoning could be used to determine the code structure, for example, in determining if any of the colours in the code are repeated. Consistent with this analysis, Experiment 1 showed that only MT errors are correlated with the number of hypotheses advanced in Mastermind . A subsequent analysis showed that conditional reasoning such as Affirming the (...) Consequent (AC) and Denying the Antecedent (DA) could lead to particularly damaging inferences only when the code was four different colours. When that was known before play, Experiment 2 showed that AC errors, but not MT errors, were significantly correlated with Mastermind hypotheses advanced. A stepwise multiple regression analysis supported these findings: When the solvers knew they were playing a four-colour code, there was a slight diminution in the variance explained by MT errors, and a significant increase in the variance explained by AC errors. An analysis of the number of different possible codes that could be consistent with hypotheses actually played showed that the number of such codes is far fewer when the code consists of four different colours than when its structure is not known. This analysis suggests that reasoners are therefore unlikely to discover many alternative causes for the feedback given when the code consists of four different colours, and it is under these conditions that humans are most likely to engage in AC reasoning. (shrink)

Introduction: Another Diction The hack. The salesman. The fired cop. The drifter. The betrayed criminal. Each of these constitutes a novel literary invention; each gives a new sense to the investigative character. They are not modifications of the classical model, stamped with the rational imprimatur of Sherlock Holmes, C. Auguste Dupin, or Joseph Rouletabille – there is no line of filiation from these to Vachss’s Burke, Pelecanos’s Nick Stefanos, or Himes’s Coffin Ed Johnson and Grave Digger Jones. Even Lacan’s powerful (...) psychoanalytic reading of Poe’s “The Purloined Letter” reveals Dupin to be a genius only in a game whose dialectical structure is given in advance. Although the subjects that come to occupy this structure only acquire determination through the assumption of their places, the dynamic form of the dialectic is itself “foreclosed” by the phallus whose circulation organizes the system. Dupin understands the circulation of the signifier only because this circulation is the figure of the law. Rejecting the phallocentric rationality of the mastermind, the new figurations of Vachss, Pelecanos, Himes, and others retain only in order to parody the grand orchestration of reason – their language is slang not deduction. They are not detectives but “dicks”: a name that incorporates within its reduction an empirical transformation of the transcendental. In fact, it is a transformation of the very sense of inquiry that requires this new type of conceptual personae in order to traverse its contours. The philosophical project of Gilles Deleuze – which he characterizes as a “transcendental empiricism” – is directed toward freeing thought from its determination by the philosophical traditions that constitute its history. Such a freeing would allow for a philosophical conceptualization of present events that are no longer able to be adequately conceptualized by that history. The distinctive character of Deleuze’s project comes from his insistence on the discontinuity between the tradition of thought and the new formulations that it is called upon to generate. For Deleuze, the philosopher is the one who asks about the generation of new concepts and thereby places herself in a double bind. On the one hand, the philosopher is historically conditioned, thrown into a tradition whose tools present a limited number of possible conceptual resolutions of a particular event. On the other hand, this conditional determination of philosophical thought is repeated, perpetually, so that the philosopher is always a parody of herself: solving the question of the determination of a present event by resolving the question of the determinability of the present by the past. This situation of parody is the limit of thinking; it is where thinking develops according to the vicissitudes of history. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:After the Future. The Paradoxes of Postmodernism and Contemporary Russian CultureDmitry KhaninAfter the Future. The Paradoxes of Postmodernism and Contemporary Russian Culture, by Mikhail Epstein; translated with an introduction by Anessa Miller-Pogacar; xvi & 394 pp. Amherst: University of Massachusetts Press, 1995, $55.00 cloth, $19.95 paper.Mikhail Epstein, a renowned Soviet critic—his books in Russian include Paradoxes of the New (1988) and Faith and Image: The Religious Subconscious in (...) [End Page 508] Twentieth Century Russian Culture (1994)—emigrated to the U.S. in 1988. After the Future is the first collection of his major essays (written from 1986 to 1991) in English translation. It begins with the article “New Currents in Russian Poetry: Conceptualism, Metarealism, and Presentism,” which first introduced to the Soviet reader a group of postmodernist poets, just coming out (with the advent of glasnost) from the literary underground. Other articles (“Avant-Garde Art and Religion,” “After the Future: On the New Consciousness in Literature”), though first published in Russian literary journals, were shipped to Russia from “the other shore” (to use Alexander Herzen’s description of emigre writers’ whereabouts vis-à-vis their homeland). The latest studies (“Relativistic Patterns in Totalitarian Thinking: The Linguistic Games of Soviet Ideology,” “The Origins and Meaning of Russian Postmodernism”) were not only sent from the other shore but apparently produced for the other shore. Instead of analyzing the recent Russian literary crop and emerging aesthetic sensibilities, Epstein focuses on Russian historic experience in its entirety, which he somewhat didactically clarifies for the foreign reader.Despite its shifting perspectives, After the Future features a distinctive approach toward Russian postmodernism, its bona fide subject matter. Following Jean Baudrillard, Epstein defines postmodernism as simulation (“the production of reality as a series of plausible copies”) that engenders some new hyperreality and in so doing supplants “reality itself, which then becomes irrecoverable” (p. 189). The originality of Epstein’s position lies, however, in his claim that Russia as a historic and cultural entity is a postmodernist phenomenon in its own right that simulates and masterminds reality. Epstein’s claim that postmodernism is ingrained in Russian tradition is pitted specifically against those who doubt that Russia is ready to enjoy its own postmodernist bash since (contrary to the West) it never went through prior modernist phases. To prove that Russia foreshadowed postmodernism, Epstein draws on a number of historic illustrations. He cites the forceful adoption of Christianity under Prince Vladimir in 988, Peter the Great’s building of Petersburg in the “Finnish swamp” and Prince Potemkin’s infamous make-up villages as examples of the Russian tendency to forfeit the status quo for the sake of trumped-up, ersatz realities.However, Epstein’s arguments to the effect that Russia, and not the West, is the birthplace of postmodernism are not very convincing since (in accordance with his own premise) other countries can claim such a dubious distinction as well. (“Russia is the motherland of elephants”—the Russians joke about claims by zealous patriots that all great discoveries were known in their country before they appeared elsewhere.) Elsewhere, the building of the Chinese wall and the ensuing Chinese policies of isolationism, draconian enclosures of peasant land in England that led to a speedy transition to capitalism, drastic economic and social reforms after the French Revolution, and the racist policies of the Third Reich were just as arbitrary, and yet transformative of prior realities, as any of [End Page 509] Russia’s most foolhardy experiments. Ironically, Epstein’s claim that Russia is the motherland of postmodernism harks back to the turn-of-the-century controversy as to whether it is pertinent to apply Marxist theory to rustic Russia. Lenin argued that Russia can claim Marxism as its own because all of its long-suffering history was an anticipation of Marxism and leading toward it. Epstein analogously contends that there is a special, indigenous Russian route to postmodernism, a statement that evokes similar pronouncements ingrained in Russian philosophical tradition: Epstein’s thesis that Russia is “irreal” reminds one of Peter Chaadaev’s contention that Russia does not have a history; his idea that Russia is on the threshold of a cultural synthesis with the... (shrink)

Through a phenomenological study of horse-human relations, this article explores the ways in which, as embodied beings, we live relationally, rather than as separate human identities. Conceptually this challenges oppositional logic and humanist assumptions, but where poststructuralist treatments of these issues tend to remain abstract, this article is concerned with an embodied demonstration of the ways in which we experience a relational or in-between logic in our everyday lives.

We argue that pedagogic authority relies on love, which is misunderstood if seen as a matter of actions and subjects. Love is based not on finite subjects and objects existing in Euclidean space and linear time, but, rather, on the non-finite ontology, space and time of relations. Loving authority is a matter of calling and vocation, arising from the spontaneous and simultaneous call-and-response of a lively relation. We make this argument through a reading of Buber’s I–You relation and Murdoch’ s (...) account of the responsiveness of ascetic discipline. In presenting this analysis, we draw upon a case study from a research project on Australian teachers and students. (shrink)

Prior research suggests brokers do not always act in the best interests of clients, although morally obligated to do so. We empirically investigated this issue focusing on trades executed at best execution price, before and after the introduction of electronic limit-order trading, on the London Stock Exchange. As a result of limit-order trading, the proportion of trades executed at the best execution price for the customer significantly increased. We attribute this to a sustained increase in the liquidity of stocks as (...) a result of limit-order trading, regardless of market capitalisation. We discuss the ethical implications of our findings and conclude that market structures that enhance market competitiveness may help reconcile broker and client interests. (shrink)

This study examined the link between employees’ adult attachment orientations and perceptions of line managers’ interpersonal justice behaviors, and the moderating effect of national culture. Participants from countries categorized as low collectivistic and high collectivistic completed an online survey. Attachment anxiety and avoidance were negatively related to interpersonal justice perceptions. Cultural differences did not moderate the effects of avoidance. However, the relationship between attachment anxiety and interpersonal justice was non-significant in the Southern Asia cultural cluster. Our findings indicate the importance (...) of ‘fit’ between cultural relational values and individual attachment orientations in shaping interpersonal justice perceptions, and highlight the need for more non-western organizational justice research. (shrink)

Abstract In this article we develop a relational understanding of sociality, that is, an account of social life that takes relation as primary. This stands in contrast to the common assumption that relations arise when subjects interact, an account that gives logical priority to separation. We will develop this relational understanding through a reading of the work of Martin Buber, a social philosopher primarily interested in dialogue, meeting, relationship, and the irreducibility and incomparability of reality. In particular, the article contrasts (...) Buber’s work with that of poststructuralist theorists who take as their starting point the deconstruction of the Hegelian logic of binary oppositions. Deconstruction understands difference as the excess that undoes the binary, but Buber, we argue, shows how difference derives from the primacy and ontological undefinability of relation. Relational logic does not exclude the logic of separations and oppositions: relation is the primal ground that makes separations possible. Content Type Journal Article Pages 1-13 DOI 10.1007/s11841-011-0278-9 Authors Andrew Metcalfe, School of Social Sciences and International Studies, University of New South Wales, Sydney, NSW 2052, Australia Ann Game, School of Social Sciences and International Studies, University of New South Wales, Sydney, NSW 2052, Australia Journal Sophia Online ISSN 1873-930X Print ISSN 0038-1527. (shrink)

Taking Arthur Fine’s The Shaky Game as my inspiration, and the recent 25th anniversary of the publication of that work as the occasion to exercise that inspiration, I sketch an alternative to the “Naturalism” prevalent among philosophers of physics. Naturalism is a methodology eventuating in a metaphysics. The methodology is to seek the deep framework assumptions that make the best sense of science; the metaphysics is furnished by those assumptions and supported by their own support of science. The alternative (...) presented here, which I call “Locavoracity,” shares Naturalism’s commitment to making sense of science, but alters Naturalism’s methodology. The Locavore’s sense-making projects are piecemeal, rather than sweeping. The Locavore’s hypothesis is that the collection of local sense-making projects fails to issue a single overarching unifying framework deserving of the title “the metaphysics that makes the best sense of science.” I muster some examples supporting the Locavore hypothesis from the interpretation of quantum field theories. (shrink)

There is an important analogy between languages and games. Just as a scoresheet records features of the evolution of a game to determine the effect of a move in that game, a conversational score records features of the evolution of a conversation to determine the effect of the linguistic moves that speakers make. Chess is particularly interesting for the study of conversational dynamics because it has language-like notations, and so serves as a simplified study in how the effect (...) of an assertion depends on, as well as evolves, the scoreboard. In this paper, we offer a compositional semantics for chess notation and a simple formal picture for determining the full information conveyed by an entry. We will also discuss an alternative model resembling accounts of centered assertion. (shrink)

A systematic introduction suitable for readers who have little familiarity with logic. Provides numerous examples and complete proofs.

We introduce the rejection game, designed to formalize the interaction between interlocutors in a Stalnakerian conversation: a speaker who asserts something and a listener who may accept or reject. The rejection game is similar to other signalling games known to the literature in economics and biology. We point out similarities and differences, and propose an application in linguistics. We uncover basic conditions under which the Gricean maxim of quality emerges from incentives among the players, providing evidence for a (...) functionalist understanding of the Gricean program. (shrink)

Recent years have witnessed an increased number of game-theoretic approaches to social norms, which apparently share some common vocabulary and methods. We describe three major approaches of this kind (due to Binmore, Bicchieri and Gintis), before comparing them systematically on five crucial themes: generality of the solution, preference transformation, punishment, epistemic conditions and type of explanation. This allows us to show that these theories are, by and large, less compatible than they seem. We then argue that those three theories (...) struggle to account for three phenomena pertaining to social norms (namely context-dependence, conflicting norms and self-evidence), with which any complete game-theoretic account should in principle be able to deal. (shrink)

Major construction projects have a great influence on the national economy and society, wherein cooperative relationship between construction suppliers plays an increasingly significant role in the overall supply chain system. However, the relationships between suppliers are noncontractual, multistage, dynamic, and complicated. To gain a deeper insight into the suppliers’ cooperative relationships, an evolutionary game model is developed to explore the cooperation tendency of multisuppliers. A replicator dynamic system is further formulated to investigate the evolutionary stable strategies of multisuppliers. Then, (...) fourteen “when-then” type scenarios are concluded and classified into six different evolutionary tracks. Meanwhile, the critical influencing factors are identified. The results show that the suppliers’ production capacity, owner-supplier contract, and the owner’s incentive mechanism influence the cooperation tendency of suppliers directly. The managerial implications contribute to insightful references for a more stable cooperative relationship between the owner and suppliers. (shrink)

The Pleadings Game is a normative formalization and computational model of civil pleading, founded in Roberty Alexy''s discourse theory of legal argumentation. The consequences of arguments and counterarguments are modelled using Geffner and Pearl''s nonmonotonic logic,conditional entailment. Discourse in focussed using the concepts of issue and relevance. Conflicts between arguments can be resolved by arguing about the validity and priority of rules, at any level. The computational model is fully implemented and has been tested using examples from Article Nine (...) of the Uniform Commercial Code. (shrink)

By means of a critical examination of a number of theses as to the nature of game-playing, the following definition is advanced: To play a game is to engage in activity directed toward bringing about a specific state of affairs, using only means permitted by specific rules, where the means permitted by the rules are more limited in scope than they would be in the absence of the rules, and where the sole reason for accepting such limitation is (...) to make possible such activity. (shrink)

In this new edition, Arthur Fine looks at Einstein's philosophy of science and develops his own views on realism. A new Afterword discusses the reaction to Fine's own theory. "What really led Einstein . . . to renounce the new quantum order? For those interested in this question, this book is compulsory reading."--Harvey R. Brown, American Journal of Physics "Fine has successfully combined a historical account of Einstein's philosophical views on quantum mechanics and a discussion of some of the philosophical (...) problems associated with the interpretation of quantum theory with a discussion of some of the contemporary questions concerning realism and antirealism. . . . Clear, thoughtful, [and] well-written."--Allan Franklin, Annals of Science "Attempts, from Einstein's published works and unpublished correspondence, to piece together a coherent picture of 'Einstein realism.' Especially illuminating are the letters between Einstein and fellow realist Schrodinger, as the latter was composing his famous 'Schrodinger-Cat' paper."--Nick Herbert, New Scientist "Beautifully clear. . . . Fine's analysis is penetrating, his own results original and important. . . . The book is a splendid combination of new ways to think about quantum mechanics, about realism, and about Einstein's views of both."--Nancy Cartwright, Isis. (shrink)

In this paper we introduce a game semantics for System P, one of the most studied axiomatic systems for non-monotonic reasoning, conditional logic and belief revision. We prove soundness and completeness of the game semantics with respect to the rules of System P, and show that an inference is valid with respect to the game semantics if and only if it is valid with respect to the standard order semantics of System P. Combining these two results leads (...) to a new completeness proof for System P with respect to its order semantics. Our approach allows us to construct for every inference either a concrete proof of the inference from the rules in System P or a countermodel in the order semantics. Our results rely on the notion of a witnessing set for an inference, whose existence is a concise, necessary and sufficient condition for validity of an inferences in System P. We also introduce an infinitary variant of System P and use the game semantics to show its completeness for the restricted class of well-founded orders. (shrink)

This paper explores the potential and relevance of an innovative sociological research method known as the Imitation Game for research in health care. Whilst this method and its potential have until recently only been explored within sociology, there are many interesting and promising facets that may render this approach fruitful within the health care field, most notably to questions about the experiential knowledge or ‘expertise’ of chronically ill patients. The Imitation Game can be especially useful because it provides (...) a way to map this experiential knowledge more systematically, without falling in the dual trap of either over-relying on in-depth, but highly specific phenomenological ‘insider’-approaches that are hard to generalize, or, alternatively, problematically reducing the rich life-worlds of patients to a set of indicators in a questionnaire. The main focus of this paper is theoretical and conceptual: explaining the Imitation Game method, discussing its usefulness in the health care domain, and exploring the ways in which the approach can be utilized for chronic illness care. The paper presents both a conceptual and empirical exploration of how the Imitation Game method and its underlying theoretical concepts of ‘contributory expertise’ and ‘interactional expertise’ can be transferred from the sociological realm to the field of health care, what kinds of insights can be gained from the method, which methodological issues it may raise, and what potentially fruitful research routes can be explored. I argue that the Imitation Game can be thought of as a ‘social learning experiment’ that simultaneously enables the participants to learn from each other’s perspectives, allows researchers to explore exciting new possibilities, and also offers the tools to intervene in the practice that is being studied. (shrink)

Hume is rightly credited with giving a brilliant, and perhaps the best, account of justice as convention. Hume's importance as a forerunner of modern economics has also long been recognized. However, most of Hume's readers have not fully appreciated how closely Hume's analysis of convention foreshadows a particular branch of economic theory, namely, game theory. Starting with the work of Barry, Runciman and Sen and Lewis, there has been a flowering of literature on the informal game-theoretic insights to (...) be found in classics of political philosophy such as Hobbes, Locke, Hume and Rousseau. A number of authors in this tradition, including Lewis, Gauthier, Mackie, and Postema, have identified passages in Hume which they interpret as giving informal examples of specific games. Yet, unlike his predecessors, Hobbes and Locke, Hume does much more than present examples which have a game-theoretic structure. In his account of convention, Hume gives general conditions which characterize the resolution of social interaction problems, and in the examples he uses to illustrate this account, Hume outlines several different methods by which agents can arrive at such a resolution. Hume's general account of convention and his explanations of the origins of particular conventions together constitute a theory of strategic interaction, which is precisely what game theory aspires to be. (shrink)

Mental representations remain the central posits of psychology after many decades of scrutiny. However, there is no consensus about the representational format(s) of biological cognition. This paper provides a survey of evidence from computational cognitive psychology, perceptual psychology, developmental psychology, comparative psychology, and social psychology, and concludes that one type of format that routinely crops up is the language-of-thought (LoT). We outline six core properties of LoTs: (i) discrete constituents; (ii) role-filler independence; (iii) predicate–argument structure; (iv) logical operators; (v) inferential (...) promiscuity; and (vi) abstract content. These properties cluster together throughout cognitive science. Bayesian computational modeling, compositional features of object perception, complex infant and animal reasoning, and automatic, intuitive cognition in adults all implicate LoT-like structures. Instead of regarding LoT as a relic of the previous century, researchers in cognitive science and philosophy-of-mind must take seriously the explanatory breadth of LoT-based architectures. We grant that the mind may harbor many formats and architectures, including iconic and associative structures as well as deep-neural-network-like architectures. However, as computational/representational approaches to the mind continue to advance, classical compositional symbolic structures – that is, LoTs – only prove more flexible and well-supported over time. (shrink)

This is a revision of game theory which takes account of agents' own descriptions of their situations, and which allows people to reason as members of groups.

The fast development of synthetic media, commonly known as deepfakes, has cast new light on an old problem, namely—to what extent do people have a moral claim to their likeness, including personally distinguishing features such as their voice or face? That people have at least some such claim seems uncontroversial. In fact, several jurisdictions already combat deepfakes by appealing to a “right to identity.” Yet, an individual’s disapproval of appearing in a piece of synthetic media is sensible only insofar as (...) the replication is successful. There has to be some form of identity between the content and the natural person. The question, therefore, is how this identity can be established. How can we know whether the face or voice featured in a piece of synthetic content belongs to a person who makes claim to it? On a trivial level, this may seem an easy task—the person in the video is A insofar as he or she is recognised as being A. Providing more rigorous criteria, however, poses a serious challenge. In this paper, I draw on Turing’s imitation game, and Floridi’s method of levels of abstraction, to propose a heuristic to this end. I call it the identification game. Using this heuristic, I show that identity cannot be established independently of the purpose of the inquiry. More specifically, I argue that whether a person has a moral claim to content that allegedly uses their identity depends on the type of harm under consideration. (shrink)

#1 NEW YORK TIMES BESTSELLER • A bold work from the author of The Black Swan that challenges many of our long-held beliefs about risk and reward, politics and religion, finance and personal responsibility In his most provocative and practical book yet, one of the foremost thinkers of our time redefines what it means to understand the world, succeed in a profession, contribute to a fair and just society, detect nonsense, and influence others. Citing examples ranging from Hammurabi to Seneca, (...) Antaeus the Giant to Donald Trump, Nassim Nicholas Taleb shows how the willingness to accept one’s own risks is an essential attribute of heroes, saints, and flourishing people in all walks of life. As always both accessible and iconoclastic, Taleb challenges long-held beliefs about the values of those who spearhead military interventions, make financial investments, and propagate religious faiths. Among his insights: • For social justice, focus on symmetry and risk sharing. You cannot make profits and transfer the risks to others, as bankers and large corporations do. You cannot get rich without owning your own risk and paying for your own losses. Forcing skin in the game corrects this asymmetry better than thousands of laws and regulations. • Ethical rules aren’t universal. You’re part of a group larger than you, but it’s still smaller than humanity in general. • Minorities, not majorities, run the world. The world is not run by consensus but by stubborn minorities imposing their tastes and ethics on others. • You can be an intellectual yet still be an idiot. “Educated philistines” have been wrong on everything from Stalinism to Iraq to low-carb diets. • Beware of complicated solutions (that someone was paid to find). A simple barbell can build muscle better than expensive new machines. • True religion is commitment, not just faith. How much you believe in something is manifested only by what you’re willing to risk for it. The phrase “skin in the game” is one we have often heard but rarely stopped to truly dissect. It is the backbone of risk management, but it’s also an astonishingly rich worldview that, as Taleb shows in this book, applies to all aspects of our lives. As Taleb says, “The symmetry of skin in the game is a simple rule that’s necessary for fairness and justice, and the ultimate BS-buster,” and “Never trust anyone who doesn’t have skin in the game. Without it, fools and crooks will benefit, and their mistakes will never come back to haunt them.”. (shrink)

Although football is often referred to as ‘the beautiful game’, to take that idea very seriously — by aestheticizing the target of spectating — is to misunderstand a purposive sport such as football. Yet such a view seems required by Stephen Mumford’s endorsement of the purist spectator, in contrast to the partisan, as attending to ‘… only aesthetic aspects of sport’. But, first, not all non-purposive appreciation is thereby aesthetic appreciation, as Mumford assumes. And, second, while a technical understanding (...) of the aesthetic includes both positive and negative aesthetic concerns, an everyday version addresses only positive aesthetic value. Now, there are concepts of grace, line and so on, applicable to football: that is, concepts suitable to aesthetic appreciation. And sometimes, for instance, in TV’s ‘Goal of the Month’ competition, such appreciation sets aside the purposive dimension of such sports. Yet that dimension is fund.. (shrink)

Imagine a deep philosophical conversation about a beautiful shot by a college player in a Final Four basketball game!

We present a new notion of game equivalence that captures basic powers of interacting players. We provide a representation theorem, a complete logic, and a new game algebra for basic powers. In doing so, we establish connections with imperfect information games and epistemic logic. We also identify some new open problems concerning logic and games.

The notion of ‘revealed preference’ is unclear and should be abandoned. Defenders of the theory of revealed preference have misinterpreted legitimate concerns about the testability of economics as the demand that economists eschew reference to (unobservable) subjective states. As attempts to apply revealed-preference theory to game theory illustrate with particular vividness, this demand is mistaken.

Kinship and reciprocity are two main predictors of altruism. The ultimatum game has been used to study altruism in many small-scale societies. We used the ultimatum game to examine effects of individuals’ family and kin relations on altruistic behavior in a kin-based horticultural community in rural Dominica. Results show sex-specific effects of kin on ultimatum game play. Average coefficient of relatedness to the village was negatively associated with women’s ultimatum game proposals and had little effect on (...) men’s proposals. Number of brothers in the village was positively associated with men’s ultimatum game proposals and negatively associated with women’s proposals. Similarly, presence of father in the village was associated with higher proposals by men and lower proposals by women. We interpret the effect of brothers on men’s proposals as a consequence of local competition among brothers. We speculate that daughter-biased parental care in this community creates a sense of entitlement among women with brothers, which may explain the inverse relation between number of brothers and women’s ultimatum game proposals. The pattern of results may be consistent with how matrifocality affects cultural models of fairness differently along gender and family lines. (shrink)

This project assesses the ability of a game tutorial, “Goblin Threat” to increase university students’ ability to recognize plagiarized passages. The game tutorial covers information about how to cite properly, types and consequences of plagiarism, and the differences between paraphrasing and plagiarism. The game involves finding and clicking on “goblins” who ask questions about various aspects of plagiarism. Sound effects and entertaining visuals work to keep students’ attention. One group of 177 students enrolled in an online Psychology (...) of Adolescence course answered four multiple choice plagiarism recognition questions in the months after completing the online game tutorial while another group of over 400 students in the same online psychology course did not have access to the game tutorial, but answered the same multiple choice plagiarism recognition questions over the same period of time. The group who played the game tutorial showed an 11% improvement in recognizing plagiarized passages over the comparison group, a statistically significant difference. Results suggest the ability to keep students focused may be an important ingredient for plagiarism interventions. (shrink)

In a previous article (Kretchmar 2005), I identified problems in a certain species of games and traced these harms to something I called a 'game flaw'. Unfortunately, 'the beautiful game' is a member of that species. I say it is unfortunate because Paul Davis (2006), when taking me to task for providing an argument that, in his terms, was 'not especially compelling', focused on the game of soccer (hereafter, football). The issue over which we contended is one (...) of 'time management'- that is, how game initiation, duration and closure are structured. I suggest that two basic methods for managing such requirements are available. Games take place during a stipulated amount of time or for a specified number of events. In my original article, I identified four fundamental problems that may accompany time-regulated games. In this essay, I attempt to fortify those claims against Davis's criticisms. (shrink)