Optimal Predictions in Everyday Cognition: The Wisdom of Individuals or Crowds?Michael C.Mozer,Harold Pashler &Hadjar Homaei -2008 -Cognitive Science 32 (7):1133-1147.detailsasked individuals to make predictions about the duration or extent of everyday events (e.g., cake baking times), and reported that predictions were optimal, employing Bayesian inference based on veridical prior distributions. Although the predictions conformed strikingly to statistics of the world, they reflect averages over many individuals. On the conjecture that the accuracy of the group response is chiefly a consequence of aggregating across individuals, we constructed simple, heuristic approximations to the Bayesian model premised on the hypothesis that individuals have (...) access merely to a sample of k instances drawn from the relevant distribution. The accuracy of the group response reported by Griffiths and Tenenbaum could be accounted for by supposing that individuals each utilize only two instances. Moreover, the variability of the group data is more consistent with this small‐sample hypothesis than with the hypothesis that people utilize veridical or nearly veridical representations of the underlying prior distributions. Our analyses lead to a qualitatively different view of how individuals reason from past experience than the view espoused by Griffiths and Tenenbaum. (shrink)
Forgetting of Foreign‐Language Skills: A Corpus‐Based Analysis of Online Tutoring Software.Ridgeway Karl,C.MozerMichael &R. Bowles Anita -2017 -Cognitive Science 41 (4):924-949.detailsWe explore the nature of forgetting in a corpus of 125,000 students learning Spanish using the Rosetta Stone® foreign-language instruction software across 48 lessons. Students are tested on a lesson after its initial study and are then retested after a variable time lag. We observe forgetting consistent with power function decay at a rate that varies across lessons but not across students. We find that lessons which are better learned initially are forgotten more slowly, a correlation which likely reflects a (...) latent cause such as the quality or difficulty of the lesson. We obtain improved predictive accuracy of the forgetting model by augmenting it with features that encode characteristics of a student's initial study of the lesson and the activities the student engaged in between the initial and delayed tests. The augmented model can predict 23.9% of the variance in an individual's score on the delayed test. We analyze which features best explain individual performance. (shrink)
Improving Human‐Machine Cooperative Classification Via Cognitive Theories of Similarity.Brett D. Roads &Michael C.Mozer -2017 -Cognitive Science 41 (5):1394-1411.detailsAcquiring perceptual expertise is slow and effortful. However, untrained novices can accurately make difficult classification decisions by reformulating the task as similarity judgment. Given a query image and a set of reference images, individuals are asked to select the best matching reference. When references are suitably chosen, the procedure yields an implicit classification of the query image. To optimize reference selection, we develop and evaluate a predictive model of similarity-based choice. The model builds on existing psychological literature and accommodates stochastic, (...) dynamic shifts of attention among visual feature dimensions. We perform a series of human experiments with two stimulus types and nine classification tasks to validate the model and to demonstrate the model's potential to boost performance. Our system achieves high accuracy for participants who are naive as to the classification task, even when the classification task switches from trial to trial. (shrink)
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Sequential Dependencies in Driving.Anup Doshi,Cuong Tran,Matthew H. Wilder,Michael C.Mozer &Mohan M. Trivedi -2012 -Cognitive Science 36 (5):948-963.detailsThe effect of recent experience on current behavior has been studied extensively in simple laboratory tasks. We explore the nature of sequential effects in the more naturalistic setting of automobile driving. Driving is a safety-critical task in which delayed response times may have severe consequences. Using a realistic driving simulator, we find significant sequential effects in pedal-press response times that depend on the history of recent stimuli and responses. Response times are slowed up to 100 ms in particular cases, a (...) delay that has dangerous practical consequences. Further, we observe a significant number of history-related pedal misapplications, which have recently been noted as a cause for concern in the automotive safety community. By anticipating these consequences of sequential context, driver assistance systems could mitigate the effects of performance degradations and thus critically improve driver safety. (shrink)
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Maximizing Students' Retention via Spaced Review: Practical Guidance From Computational Models of Memory.Mohammad M. Khajah,Robert V. Lindsey &Michael C.Mozer -2014 -Topics in Cognitive Science 6 (1):157-169.detailsDuring each school semester, students face an onslaught of material to be learned. Students work hard to achieve initial mastery of the material, but when they move on, the newly learned facts, concepts, and skills degrade in memory. Although both students and educators appreciate that review can help stabilize learning, time constraints result in a trade-off between acquiring new knowledge and preserving old knowledge. To use time efficiently, when should review take place? Experimental studies have shown benefits to long-term retention (...) with spaced study, but little practical advice is available to students and educators about the optimal spacing of study. The dearth of advice is due to the challenge of conducting experimental studies of learning in educational settings, especially where material is introduced in blocks over the time frame of a semester. In this study, we turn to two established models of memory—ACT-R and MCM—to conduct simulation studies exploring the impact of study schedule on long-term retention. Based on the premise of a fixed time each week to review, converging evidence from the two models suggests that an optimal review schedule obtains significant benefits over haphazard (suboptimal) review schedules. Furthermore, we identify two scheduling heuristics that obtain near optimal review performance: (a) review the material from μ-weeks back, and (b) review material whose predicted memory strength is closest to a particular threshold. The former has implications for classroom instruction and the latter for the design of digital tutors. (shrink)
Highlights as an Early Predictor of Student Comprehension and Interests.Adam Winchell,Andrew Lan &MichaelMozer -2020 -Cognitive Science 44 (11):e12901.detailsWhen engaging with a textbook, students are inclined to highlight key content. Although students believe that highlighting and subsequent review of the highlights will further their educational goals, the psychological literature provides little evidence of benefits. Nonetheless, a student’s choice of text for highlighting may serve as a window into her mental state—her level of comprehension, grasp of the key ideas, reading goals, and so on. We explore this hypothesis via an experiment in which 400 participants read three sections from (...) a college‐level biology text, briefly reviewed the text, and then took a quiz on the material. During initial reading, participants were able to highlight words, phrases, and sentences, and these highlights were displayed along with the complete text during the subsequent review. Consistent with past research, the amount of highlighted material is unrelated to quiz performance. Nonetheless, highlighting patterns may allow us to infer reader comprehension and interests. Using multiple representations of the highlighting patterns, we built probabilistic models to predict quiz performance and matrix factorization models to predict what content would be highlighted in one passage from highlights in other passages. We find that quiz score prediction accuracy reliably improves with the inclusion of highlighting data (by about 1%–2%), both for held‐out students and for held‐out student questions (i.e., questions selected randomly for each student), but not for held‐out questions. Furthermore, an individual’s highlighting pattern is informative of what she highlights elsewhere. Our long‐term goal is to design digital textbooks that serve not only as conduits of information into the reader’s mind but also allow us to draw inferences about the reader at a point where interventions may increase the effectiveness of the material. (shrink)
World Without Design: The Ontological Consequences of Naturalism.Michael C. Rea -2002 - Oxford, GB: Oxford University Press UK.detailsPhilosophical naturalism, according to which philosophy is continuous with the natural sciences, has dominated the Western academy for well over a century; butMichael Rea claims that it is without rational foundation, and that the costs of embracing it are surprisingly high. The first part of World Without Design aims to provide a fair and historically informed characterization of naturalism. Rea then argues compellingly to the surprising conclusion that naturalists are committed to rejecting realism about material objects, materialism, and (...) perhaps realism about other minds. This conclusion is striking, largely because naturalism is often simply identified with materialism, and the remaining two theses are ones that naturalists very typically want to endorse. Rea goes on to examine two alternative research programs: intuitionism and supernaturalism, and argues for the conclusion that intuitionism, under certain circumstances, is self-defeating.World Without Design offers a provocative challenge to philosophical orthodoxy. It will make uncomfortable reading for many philosophers. (shrink)
Is ego depletion too incredible? Evidence for the overestimation of the depletion effect.Evan C. Carter &Michael E. McCullough -2013 -Behavioral and Brain Sciences 36 (6):683-684.detailsThe depletion effect, a decreased capacity for self-control following previous acts of self-control, is thought to result from a lack of necessary psychological/physical resources (i.e., “ego depletion”). Kurzban et al. present an alternative explanation for depletion; but based on statistical techniques that evaluate and adjust for publication bias, we question whether depletion is a real phenomenon in need of explanation.
Spatial representations activated during real‐time comprehension of verbs.Daniel C. Richardson,Michael J. Spivey,Lawrence W. Barsalou &Ken McRae -2003 -Cognitive Science 27 (5):767-780.detailsPrevious research has shown that na_ve participants display a high level of agreement when asked to choose or drawschematic representations, or image schemas, of concrete and abstract verbs [Proceedings of the 23rd Annual Meeting of the Cognitive Science Society, 2001, Erlbaum, Mawhah, NJ, p. 873]. For example, participants tended to ascribe a horizontal image schema to push, and a vertical image schema to respect. This consistency in offline data is preliminary evidence that language invokes spatial forms of representation. It also (...) provided norms that were used in the present research to investigate the activation of spatial image schemas during online language comprehension. We predicted that if comprehending a verb activates a spatial representation that is extended along a particular horizontal or vertical axis, it will affect other forms of spatial processing along that axis. Participants listened to short sentences while engaged in a visual discrimination task (Experiment 1) and a picture memory task (Experiment 2). In both cases, reaction times showed an interaction between the horizontal/vertical nature of the verb's image schema, and the horizontal/vertical position of the visual stimuli. We argue that such spatial effects of verb comprehension provide evidence for the perceptual–motor character of linguistic representations. (shrink)
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Virtue Ethics and Confucianism.Stephen C. Angle &Michael Slote (eds.) -2013 - New York: Routledge.detailsThis volume presents the fruits of an extended dialogue among American and Chinese philosophers concerning the relations between virtue ethics and the Confucian tradition. Based on recent advances in English-language scholarship on and translation of Confucian philosophy, the book demonstrates that cross-tradition stimulus, challenge, and learning are now eminently possible. Anyone interested in the role of virtue in contemporary moral philosophy, in Chinese thought, or in the future possibilities for cross-tradition philosophizing will find much to engage with in the twenty (...) essays collected here. (shrink)
Science nominalized?Susan C. Hale &Michael D. Resnik -1987 -Philosophy of Science 54 (2):277-280.detailsWe argue that Horgan's program for nominalizing science fails, because its translation of quantitative statements destroys the inferential structures of explanations, predictions and retrodictions of nonquantitative scientific facts.
Existential risk from AI and orthogonality: Can we have it both ways?Vincent C. Müller &Michael Cannon -2021 -Ratio 35 (1):25-36.detailsThe standard argument to the conclusion that artificial intelligence (AI) constitutes an existential risk for the human species uses two premises: (1) AI may reach superintelligent levels, at which point we humans lose control (the ‘singularity claim’); (2) Any level of intelligence can go along with any goal (the ‘orthogonality thesis’). We find that the singularity claim requires a notion of ‘general intelligence’, while the orthogonality thesis requires a notion of ‘instrumental intelligence’. If this interpretation is correct, they cannot be (...) joined as premises and the argument for the existential risk of AI turns out invalid. If the interpretation is incorrect and both premises use the same notion of intelligence, then at least one of the premises is false and the orthogonality thesis remains itself orthogonal to the argument to existential risk from AI. In either case, the standard argument for existential risk from AI is not sound.—Having said that, there remains a risk of instrumental AI to cause very significant damage if designed or used badly, though this is not due to superintelligence or a singularity. (shrink)
Varieties of Ethical Reflection: New Directions for Ethics in a Global Context.Stephen C. Angle,Michael Barnhart,Carl B. Becker,Purushottama Bilimoria,Samuel Fleischacker,Alan Fox,Damien Keown,Russell Kirkland,David R. Loy,Mara Miller &Kirill Ole Thompson (eds.) -2002 - Lexington Books.detailsVarieties of Ethical Reflection brings together new cultural and religious perspectives—drawn from non-Western, primarily Asian, philosophical sources—to globalize the contemporary discussion of theoretical and applied ethics.
Public deliberation to develop ethical norms and inform policy for biobanks: Lessons learnt and challenges remaining.Kieran C. O’Doherty &Michael M. Burgess -2013 -Research Ethics 9 (2):55-77.detailsPublic participation is increasingly an aspect of policy development in many areas, and the governance of biomedical research is no exception. There are good reasons for this: biomedical research relies on public funding; it relies on biological samples and information from large numbers of patients and healthy individuals; and the outcomes of biomedical research are dramatically and irrevocably changing our society. There is thus arguably a democratic imperative for including public values in strategic decisions about the governance of biomedical research. (...) However, it is not immediately clear how this might best be achieved. While different approaches have been proposed and trialled, we focus here on the use of public deliberation as a mechanism to develop input for policy on biomedical research. We begin by explaining the rationale for conducting public deliberation in biomedical research. We focus, in particular, on the ELS (ethical, legal, social) aspects of human tissue biobanking. The last few years have seen the development of methods for conducting public deliberation on these issues in several jurisdictions, for the purpose of incorporating lay public voices in biobanking policy. We explain the theoretical foundation underlying the notion of deliberation, and outline the main lessons and capacities that have been developed in the area of conducting public deliberation on biobanks. We next provide an analysis of the theoretical and practical challenges that we feel still need to be addressed for the use of public deliberation to guide ethical norms and governance of biomedical research. We examine the issues of: (i) linking the outcomes of deliberation to tangible action; (ii) the mandate under which a deliberation is conducted; (iii) the relative weight that should be accorded to a public deliberative forum vs other relevant voices; (iv) evaluating the quality of deliberation; and (5) the problem of scalability of minipublics. (shrink)
Human Dignity and Reproductive Technology.Nicholas C. Lund-Molfese &Michael L. Kelly (eds.) -2003 - Upa.detailsThe March 2002 symposium Human Dignity and Reproductive Technology brought together philosophers, theologians, scientists, lawyers, and scholars from across the United States. The essays of this book are the contributions of the symposium's participants.
Quantum relativistic action at a distance.Donald C. Salisbury &Michael Pollot -1989 -Foundations of Physics 19 (12):1441-1477.detailsA well-known relativistic action at a distance interaction of two unequal masses is altered so as to yield purely Newtonian radial forces with fixed particle rest masses in the system center-of-momentum inertial frame. Although particle masses experience no kinematic mass increase in this frame, speeds are naturally restricted to less than the speed of light. We derive a relation between the center-of-momentum frame total Newtonian energy and the composite rest mass. In a new proper time quantum formalism, we obtain an (...) L2(R4 ⊗ R4, C) Hilbert space by varying individual particle rest masses. We propose the use of density operators, recognizing that the auxiliary proper time parameter is not an observable. The quantum formalism is applied to our altered version of the relativistic harmonic oscillator. Our generalized coherent states yield four-dimensional wave packets which follow the correct classical world lines. Appendices contain reviews of classical Hamiltonian reparametrization (incorporating our notion of manifest covariance), and a comparison of this work with the literature. (shrink)
Multiculturalism: Expanded Paperback Edition.Kwame Anthony Appiah,Charles Taylor,Jürgen Habermas,Stephen C. Rockefeller,Michael Walzer &Susan Wolf -1994 - Princeton University Press.detailsA new edition of the highly acclaimed book Multiculturalism and "The Politics of Recognition," this paperback brings together an even wider range of leading philosophers and social scientists to probe the political controversy surrounding ...
Scholars’ preferred solutions for research misconduct: results from a survey of faculty members at America’s top 100 research universities.Travis C. Pratt,Michael D. Reisig,Kristy Holtfreter &Katelyn A. Golladay -2019 -Ethics and Behavior 29 (7):510-530.detailsResearch misconduct is harmful because it threatens public health and public safety, and also undermines public confidence in science. Efforts to eradicate ongoing and prevent future misconduct are numerous and varied, yet the question of “what works” remains largely unanswered. To shed light on this issue, this study used data from both mail and online surveys administered to a stratified random sample of tenured and tenure-track faculty members (N = 613) in the social, natural, and applied sciences at America’s top (...) 100 research universities. Participants were asked to gauge the effectiveness of various intervention strategies: formal sanctions (professional and legal), informal sanctions (peers), prevention efforts (ethics and professional training), and reducing the pressures associated with working in research-intensive units. Results indicated that (1) formal sanctions received the highest level of support, (2) female scholars and researchers working in the applied sciences favored formal sanctions, and (3) a nontrivial portion of the sample supported an integrated approach that combined elements of different strategies. A key takeaway for university administrators is that a multifaceted approach to dealing with the problem of research misconduct, which prominently features enhanced formal sanctions, will be met with the support of university faculty. (shrink)
Distinguishing Risk and Uncertainty in Risk Assessments of Emerging Technologies.Kevin C. Elliott &Michael Dickson -unknowndetailsEconomist Frank Knight drew a distinction between decisions under risk and decisions under uncertainty. Despite the significance of this distinction for decision theory, we argue that there has been inadequate attention to the difficulties involved in classifying decision situations into these categories. Using the risk assessment of carbon nanotubes as an example, we show that it is often unclear whether there is adequate information to classify a decision situation as being under risk as opposed to uncertainty. We conclude by providing (...) two suggestions for responding to these difficulties: treating decisions as real-world experiments; and promoting broadly based deliberation about quantitative information. (shrink)
Insights into theory of mind from deafness and autism.Candida C. Peterson &Michael Siegal -2000 -Mind and Language 15 (1):123–145.detailsThis paper summarizes the results of 11 separate studies of deaf children’s performance on standard tests of false belief understanding, the results of which combine to show that deaf children from hearing families are likely to be delayed in acquiring a theory of mind. Indeed, these children generally perform no better than autistic individuals of similar mental age. Conversational and neurological explanations for deficits in mental state understanding are considered in relation to recent evidence from studies of deaf, autistic, and (...) normally developing children with varied levels of access to talk about mental states at home with family members during the preschool years. (shrink)
DNA structures at chromosomal translocation sites.Sathees C. Raghavan &Michael R. Lieber -2006 -Bioessays 28 (5):480-494.detailsIt has been unclear why certain defined DNA regions are consistently sites of chromosomal translocations. Some of these are simply sequences of recognition by endogenous recombination enzymes, but most are not. Recent progress indicates that some of the most common fragile sites in human neoplasm assume non‐B DNA structures, namely deviations from the Watson–Crick helix. Because of the single strandedness within these non‐B structures, they are vulnerable to structure‐specific nucleases. Here we summarize these findings and integrate them with other recent (...) data for non‐B structures at sites of consistent constitutional chromosomal translocations. BioEssays 28: 480–494, 2006. © 2006 Wiley Periodicals, Inc. (shrink)
Bridging the gap: ethical considerations of providing psychological assessment results in research studies.Alexandra C. Kirsch,Michael J. Zaccariello,Jennifer B. McCormick,Richard R. Sharp,Randall P. Flick &David O. Warner -2021 -Ethics and Behavior 31 (6):381-394.detailsABSTRACT There is limited guidance about whether and how to provide psychological assessment results to research participants. This paper considers several ethical challenges associated with offering individual research results in psychological assessment research. Additionally, the process used to return individual results within a study examining neurodevelopmental effects of anesthesia exposure in children and adolescents is described. Almost all participants requested to know if results were concerning; however, only around a third of those with concerning findings sought additional feedback. Ongoing research (...) and guidance are necessary to establish evidence-based practices and manage challenges that may emerge when disclosing such results. (shrink)
Bioethics: A Culture War.Nicholas C. Lund-Molfese &Michael L. Kelly (eds.) -2004 - Upa.detailsThe purpose of this valuable book is to consider recent cultural trends in bioethics from a Catholic perspective. Bioethics is intended for a lay audience interested in understanding bioethical issues from a Catholic perspective.
Unravelling intention: Distal intentions increase the subjective sense of agency.Mikkel C. Vinding,Michael N. Pedersen &Morten Overgaard -2013 -Consciousness and Cognition 22 (3):810-815.detailsExperimental studies investigating the contribution of conscious intention to the generation of a sense of agency for one’s own actions tend to rely upon a narrow definition of intention. Often it is operationalized as the conscious sensation of wanting to move right before movement. Existing results and discussion are therefore missing crucial aspects of intentions, namely intention as the conscious sensation of wanting to move in advance of the movement. In the present experiment we used an intentional binding paradigm, in (...) which we distinguished between immediate intention, as usually investigated, and longer standing intention. The results showed that the binding effect was significantly enhanced for distal intentions compared to proximal intentions, indicating that the former leads to stronger sense of agency. Our finding provides empirical support for a crucial distinction between at least two types of intention when addressing the efficacy of conscious intentions. (shrink)