DOCSLIB.ORG

Making Ranking Theory Useful for Psychology of Reasoning

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Making Ranking Theory Useful for Psychology of Reasoning Making Ranking Theory useful for Psychology of Reasoning Niels Skovgaard Olsen Making Ranking Theory useful for Psychology of Reasoning Dissertation zur Erlangung des akademischen Grades Doctor philosophiae (Dr.phil.) an der Geisteswissenschaftliche Sektion Fachbereich Philosophie vorgelegt von Niels Skovgaard Olsen Tag der mündlichen Prüfung: 17. November 2014 Referenten: Prof. Dr. Wolfgang Spohn Prof. Dr. Sieghard Beller Prof. Dr. Thomas Müller Abstract An organizing theme of the dissertation is the issue of how to make philosophical theories useful for scientific purposes. An argument for the contention is presented that it doesn’t suffice merely to theoretically motivate one’s theories, and make them compatible with existing data, but that philosophers having this aim should ideally contribute to identifying unique and hard to vary predictions of their theories. This methodological recommendation is applied to the ranking-theoretic approach to conditionals, which emphasizes the epistemic relevance and the expression of reason relations as part of the semantics of the natural language conditional. As a first step, this approach is theoretically motivated in a comparative discussion of other alternatives in psychology of reasoning, like the suppositional theory of conditionals, and novel approaches to the problems of compositionality and accounting for the objective purport of indicative conditionals are presented. In a second step, a formal model is formulated, which allows us to derive quantitative predictions from the ranking-theoretic approach, and it is investigated which novel avenues of empirical research that this model opens up for. Finally, a treatment is given of the problem of logical omniscience as it concerns the issue of whether ranking theory (and other similar approaches) makes too idealized assumptions about rationality to allow for interesting applications in psychology of reasoning. Building on the work of Robert Brandom, a novel solution to this problem is presented, which both opens up for new perspectives in psychology of reasoning and appears to be capable of satisfying a range of constraints on bridge principles between logic and norms of reasoning, which would otherwise stand in a tension. i Zusammenfassung Ein Leitmotiv dieser Dissertation ist die Fragestellung, wie man philosophische Theorien für empirische Wissenschaften nutzbar machen kann. Es wird ein Argument dafür aufgezeigt, dass es nicht genügt, seine Theorie theoretisch zu motivieren und sie mit bestehenden Befunden kompatibel zu machen, sondern dass man vielmehr dafür Sorge zu tragen hat, dass es möglich ist, Vorhersagen abzuleiten, die schwer zu variieren sind und von den bestehenden Theorien nicht geteilt werden. Diese methodologische Empfehlung wird in Bezug auf den rang-theoretischen Ansatz zu Konditionalsätzen angewendet, welcher die epistemische Relevanz und das Ausdrücken von Gründen in der Semantik von Konditionalsätzen betont. In einem ersten Schritt wird dieser Ansatz gegenüber bestehenden Alternativen, wie etwa der suppositionellen Theorie von Konditionalsätzen, theoretisch motiviert. Dabei wird unter anderem ein neuer Lösungsansatz für das Problem der Kompositionalität und das Problem des objektiven Behauptungs-Charakters indikativer Konditionalsätze angeboten. In einem zweiten Schritt wird ein mathematisches Modell formuliert, das uns erlaubt, quantitative Vorhersagen von dem rang-theoretischen Ansatz abzuleiten und es wird eingehend erörtert, welche neuen empirischen Fragestellungen damit verknüpft sind. Abschließend wird das sogenannte Problem der logischen Omniszienz ausführlich behandelt, da es die Frage aufwirft, ob die Rangtheorie (und ähnliche Ansätze) auf zu idealisierten Rationalitätsannahmen beruht, um für die Psychologie des Denkens attraktiv zu sein. Aufbauend auf der Theorie Robert Brandoms wird dabei ein neuer Lösungsansatz angeboten. Dieser vermag es sowohl, neue Perspektiven für die Psychologie des Denkens zu eröffnen, als auch einer Menge scheinbar widerstreitender Forderungen, die an Brückenprinzipien zwischen Logik und Normen des Denkens gestellt werden, gerecht zu werden. ii Table of Contents Preface ..................................................................................................................................................... vii I On How to make Philosophical Theories useful for Scientific Purposes ............................ 1 1 Introduction ........................................................................................................................................... 2 2 The Uniqueness Constraint ................................................................................................................... 4 3 Hard to Vary Predictions ....................................................................................................................... 7 4 Examples from Psychology of Concepts .............................................................................................. 9 5 Generating Predictions ........................................................................................................................ 18 Appendix 1: Sampling Spaces and Prior Probability Distributions ...................................... 22 II Motivating the Relevance Approach to Conditionals ............................................................... 35 1 Introduction ......................................................................................................................................... 36 1.1 The Horseshoe Analysis ..................................................................................................................... 36 1.2 The Suppositional Theory of Conditionals ........................................................................................... 38 1.3 The Relevance Approach ................................................................................................................... 42 2 The Semantics/Pragmatics Distinction ............................................................................................... 44 2.1 Reason Relations as Part of the Sense Dimension of Meaning ............................................................... 46 2.2 On Semantic Defects ......................................................................................................................... 48 3 Objective Purport and Compositionality ............................................................................................ 53 3.1 The Normative Foundation of Perceived Objective Purport ................................................................. 56 3.2 Comparative Remarks ........................................................................................................................ 59 III Making Ranking Theory Useful for Experimental Psychology ............................................ 69 1 Introduction ......................................................................................................................................... 70 2 Arguments against the Infinitesimal Translation ................................................................................ 70 2.1 Introducing Ranking Theory .............................................................................................................. 70 2.2 Implications for the Probability Scale .................................................................................................. 73 2.3 Ramifications for the Applications of Ranking Theory .......................................................................... 76 iii 2.4 Dilemma ........................................................................................................................................... 78 3 Extending Ranking Theory by Logistic Regression ............................................................................ 79 3.1 Logistic Regression ............................................................................................................................ 80 3.2 Logistic Regression and Ranking Theory ............................................................................................. 82 3.3 The Conditional Inference Task.......................................................................................................... 84 3.4 Introducing Qualitative Constraints on the Free Parameters .................................................................. 92 3.5 Deriving Predictions from the Logistic Regression Model ..................................................................... 93 3.6 The Ramsey Test & the Suppositional Theory of Conditionals .............................................................. 99 Appendix 2: An Alternative Taxonomy of Reason Relations ............................................... 103 IV The Logistic Regression Model and the Dual Source Approach ....................................... 109 1 Introduction ....................................................................................................................................... 110 2 The Dual Source Approach ............................................................................................................... 110 2.1 A Mathematical Implementation ....................................................................................................... 113 2.2 Using the Logistic Regression Model to model the Content Component .............................................. 116 2.2.1 Comparing the Logistic Regression Model
Load more

Recommended publications
  • 1. Thinking and Reasoning. (PC Wason and Johnson-Laird, PN, Eds.)
    PUBLICATIONS Books: 1. Thinking and Reasoning. (P.C. Wason and Johnson-Laird, P.N., Eds.) Harmondsworth: Penguin, 1968. 2. Psychology of Reasoning. (P.C. Wason and Johnson-Laird, P.N.) London: Batsford. Cambridge, Mass.: Harvard University Press, 1972. Italian translation: Psicologia del Ragionamento, Martello-Giunti, 1977. Spanish translation: Psicologia del Razonamiento, Editorial Debate, Madrid, 1980. 3. Language and Perception. (George A. Miller and Johnson-Laird, P.N.) Cambridge: Cambridge University Press. Cambridge, Mass.: Harvard University Press, 1976. 4. Thinking. (Johnson-Laird, P.N. and P.C. Wason, Eds.) Cambridge: Cambridge University Press, 1977. 5. Mental Models. Cambridge: Cambridge University Press. Cambridge, Mass.: Harvard University Press, 1983. Italian translation by Alberto Mazzocco, Il Mulino, 1988. Japanese translation, Japan UNI Agency,1989. 6. The Computer and the Mind: An Introduction to Cognitive Science. Cambridge, MA: Harvard University Press. London: Fontana, 1988. Second edition, 1993. Japanese translation, 1989. El ordenador y la mente. (1990) Ediciones Paidos. [Spanish translation] La Mente e il Computer. (1990) Il Mulino. [Italian translation] Korean translation, Seoul: Minsuma,1991. [Including a new preface.] L’Ordinateur et L’Esprit. (1994) Paris: Editions Odile Jacob. [French translation of second edition.] Der Computer im Kopf. (1996) München: Deutscher Taschenbuch Verlag. [German translation of second edition.] Polish translation,1998. 7. Deduction. (Johnson-Laird, P.N., and Byrne, R.M.J.) Hillsdale, NJ: Lawrence Erlbaum Associates, 1991. 8. Human and Machine Thinking. Hillsdale, NJ: Lawrence Erlbaum Associates, 1993. Deduzione, Induzione, Creativita. (1994) Bologna, Italy: Il Mulino. 9. Reasoning and Decision Making. (Johnson-Laird, P.N., and Shafir, E., Eds.) Oxford: Blackwell, 1994. 10. Models of Visuospatial Cognition.
    [Show full text]
  • Evolutionary Psychology and Human Reasoning: Testing the Domain-Specificity Hypothesis Through Wason Selection Task
    Evolutionary Psychology and Human Reasoning: Testing the Domain-Specificity Hypothesis through Wason Selection Task Fabrizio Ferrara ([email protected])* Amedeo Esposito ([email protected])* Barbara Pizzini ([email protected])* Olimpia Matarazzo ([email protected])* *Department of Psychology - Second University of Naples, Viale Ellittico 31, Caserta, 81100 Italy Abstract during phylogenetic development. Both these approaches, albeit based on a different conception of the human mind, The better performance in the selection task with deontic rules, compared to the descriptive version, has been share the assumption that it is better equipped for reasoning interpreted by evolutionary psychologists as the evidence that with general (e.g. Cummins 1996, 2013) or specific (e.g. human reasoning has been shaped to deal with either global or Cosmides, 1989; Cosmides & Tooby, 2013) deontic norms specific deontic norms. An alternative hypothesis is that the rather than with epistemic concepts (i.e. the concepts related two types of rules have been embedded in two different forms to knowledge and belief). of reasoning, about and from a rule, the former demanding Experimental evidence achieved mainly by means of the more complex cognitive processes. In a between-subjects study with 640 participants we manipulated the content of the selection task (Wason, 1966) is thought to support this rule (deontic vs. social contract vs. precaution vs. descriptive) claim. In the original formulation, this task consists in and the type of task (reasoning about, traditionally associated selecting the states of affairs necessary to determine the to indicative tasks, vs. reasoning from, traditionally associated truth-value of a descriptive (or indicative) rule expressed to deontic tasks).
    [Show full text]
  • Rethinking Logical Reasoning Skills from a Strategy Perspective
    Rethinking Logical Reasoning Skills from a Strategy Perspective Bradley J. Morris* Grand Valley State University and LRDC, University of Pittsburgh, USA Christian D. Schunn LRDC, University of Pittsburgh, USA Running Head: Logical Reasoning Skills _______________________________ * Correspondence to: Department of Psychology, Grand Valley State University, 2117 AuSable Hall, One Campus Drive, Allendale, MI 49401, USA. E-mail: [email protected], Fax: 1-616-331-2480. Morris & Schunn Logical Reasoning Skills 2 Rethinking Logical Reasoning Skills from a Strategy Perspective Overview The study of logical reasoning has typically proceeded as follows: Researchers (1) discover a response pattern that is either unexplained or provides evidence against an established theory, (2) create a model that explains this response pattern, then (3) expand this model to include a larger range of situations. Researchers tend to investigate a specific type of reasoning (e.g., conditional implication) using a particular variant of an experimental task (e.g., the Wason selection task). The experiments uncover a specific reasoning pattern, for example, that people tend to select options that match the terms in the premises, rather than derive valid responses (Evans, 1972). Once a reasonable explanation is provided for this, researchers typically attempt to expand it to encompass related phenomena, such as the role of ‘bias’ in other situations like weather forecasting (Evans, 1989). Eventually, this explanation may be used to account for all performance on an entire class of reasoning phenomena (e.g. deduction) regardless of task, experience, or age. We term this a unified theory. Some unified theory theorists have suggested that all logical reasoning can be characterized by a single theory, such as one that is rule-based (which involves the application of transformation rules that draw valid conclusions once fired; Rips, 1994).
    [Show full text]
  • How Emotions Affect Logical Reasoning: Evidence from Experiments with Mood-Manipulated Participants, Spider Phobics, and People with Exam Anxiety
    Emotion Science How emotions affect logical reasoning: Evidence from experiments with mood-manipulated participants, spider phobics, and people with exam anxiety Nadine Jung, Christina Wranke, Kai Hamburger and Markus Knauff Journal Name: Frontiers in Psychology ISSN: 1664-1078 Article type: Original Research Article Received on: 29 Oct 2013 Accepted on: 22 May 2014 Provisional PDF published on: 22 May 2014 www.frontiersin.org: www.frontiersin.org Citation: Jung N, Wranke C, Hamburger K and Knauff M(2014) How emotions affect logical reasoning: Evidence from experiments with mood-manipulated participants, spider phobics, and people with exam anxiety. Front. Psychol. 5:570. doi:10.3389/fpsyg.2014.00570 /Journal/Abstract.aspx?s=361& /Journal/Abstract.aspx?s=361&name=emotion%20science& name=emotion%20science& ART_DOI=10.3389/fpsyg.2014.00570 ART_DOI=10.3389 /fpsyg.2014.00570: (If clicking on the link doesn't work, try copying and pasting it into your browser.) Copyright statement: © 2014 Jung, Wranke, Hamburger and Knauff. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. This Provisional PDF corresponds to the article as it appeared upon acceptance, after rigorous
    [Show full text]
  • Thinking and Reasoning
    Thinking and Reasoning Thinking and Reasoning ■ An introduction to the psychology of reason, judgment and decision making Ken Manktelow First published 2012 British Library Cataloguing in Publication by Psychology Press Data 27 Church Road, Hove, East Sussex BN3 2FA A catalogue record for this book is available from the British Library Simultaneously published in the USA and Canada Library of Congress Cataloging in Publication by Psychology Press Data 711 Third Avenue, New York, NY 10017 Manktelow, K. I., 1952– Thinking and reasoning : an introduction [www.psypress.com] to the psychology of reason, Psychology Press is an imprint of the Taylor & judgment and decision making / Ken Francis Group, an informa business Manktelow. p. cm. © 2012 Psychology Press Includes bibliographical references and Typeset in Century Old Style and Futura by index. Refi neCatch Ltd, Bungay, Suffolk 1. Reasoning (Psychology) Cover design by Andrew Ward 2. Thought and thinking. 3. Cognition. 4. Decision making. All rights reserved. No part of this book may I. Title. be reprinted or reproduced or utilised in any BF442.M354 2012 form or by any electronic, mechanical, or 153.4'2--dc23 other means, now known or hereafter invented, including photocopying and 2011031284 recording, or in any information storage or retrieval system, without permission in writing ISBN: 978-1-84169-740-6 (hbk) from the publishers. ISBN: 978-1-84169-741-3 (pbk) Trademark notice : Product or corporate ISBN: 978-0-203-11546-6 (ebk) names may be trademarks or registered trademarks, and are used
    [Show full text]
  • Why Do Humans Reason? Arguments for an Argumentative Theory
    BEHAVIORAL AND BRAIN SCIENCES (2011) 34, 57–111 doi:10.1017/S0140525X10000968 Why do humans reason? Arguments for an argumentative theory Hugo Mercier Philosophy, Politics and Economics Program, University of Pennsylvania, Philadelphia, PA 19104 [email protected] http:// sites.google.com/site/hugomercier/ Dan Sperber Jean Nicod Institute (EHESS-ENS-CNRS), 75005 Paris, France; Department of Philosophy, Central European University, Budapest, Hungary [email protected] http:// www.dan.sperber.fr Abstract: Reasoning is generally seen as a means to improve knowledge and make better decisions. However, much evidence shows that reasoning often leads to epistemic distortions and poor decisions. This suggests that the function of reasoning should be rethought. Our hypothesis is that the function of reasoning is argumentative. It is to devise and evaluate arguments intended to persuade. Reasoning so conceived is adaptive given the exceptional dependence of humans on communication and their vulnerability to misinformation. A wide range of evidence in the psychology of reasoning and decision making can be reinterpreted and better explained in the light of this hypothesis. Poor performance in standard reasoning tasks is explained by the lack of argumentative context. When the same problems are placed in a proper argumentative setting, people turn out to be skilled arguers. Skilled arguers, however, are not after the truth but after arguments supporting their views. This explains the notorious confirmation bias. This bias is apparent not only when people are actually arguing, but also when they are reasoning proactively from the perspective of having to defend their opinions. Reasoning so motivated can distort evaluations and attitudes and allow erroneous beliefs to persist.
    [Show full text]
  • Argumentation, Rationality, and Psychology of Reasoning
    Argumentation, Rationality, and Psychology of Reasoning DAVID GODDEN Philosophy Department Old Dominion University Norfolk, Virginia 23529 USA [email protected] www.davidgodden.ca Abstract: This paper locates a Résumé: On identifie une idée common picture of argumentative commune et fondamentale de la na- rationality and identifies some im- ture de la rationalité argumentative plicit assumptions. Argumentative et une collection d'hypothèses im- rationality is contrasted with dual- plicites en elle. Ensuite on met en process theories of reasoning and contraste la rationalité argumentative rationality prevalent in the psychol- avec les théories de double proces- ogy of reasoning. I argue that argu- sus de raisonnement et de la ration- mentative rationality properly corre- alité qui prévalent dans la psycholo- sponds only with system-2 reasoning gie du raisonnement. On soutient in dual-process theories. This chal- que la rationalité argumentative cor- lenges the prescriptive force of ar- respond bien seulement avec un sys- gumentative norms, if they derive tème-2 de raisonnement dans les from their descriptive accuracy of théories de double processus. Ce our cognitive processes. As a reme- résultat remet en cause la force nor- dy, I propose an activity-based ac- mative des normes argumentatives, count of reasoning that retains the si elles proviennent du tout de leur assumptions of argumentative ra- exactitude descriptive de nos proces- tionality while recontextualizing the sus cognitifs. Comme un remède, je relationship between reasoning as a propose une explication fondée sur justificatory activity and the psycho- l'activité de raisonnement qui retient logical states and processes underly- les suppositions de la rationalité ing it.
    [Show full text]
  • Toward a Unified Theory of Reasoning
    Author's personal copy CHAPTER ONE Toward a Unif ied Theory of Reasoning P. N. Johnson-Laird*,†,1, Sangeet S. Khemlani‡ *Department of Psychology, Princeton University, Princeton, NJ, USA †Department of Psychology, New York University, New York, NY, USA ‡Navy Center for Applied Research in Artificial Intelligence, Naval Research Laboratory, Washington, DC, USA 1Corresponding author: E-mail: [email protected] Contents 1. Introduction 2 2. What Is Reasoning? 4 3. Models of Possibilities 6 4. Icons and Symbols 9 5. The Principle of Truth 11 6. Models as Counterexamples 13 7. Modulation and the Use of Knowledge 16 8. Induction and Abduction 20 9. Probabilities: Extensional and Intensional 23 10. Mental Simulations and Informal Programs 27 11. Toward a Uni!ed Theory 33 12. Conclusions 37 Acknowledgments 37 References 38 Abstract This article describes a theory that uses mental models to integrate deductive, induc- tive, and probabilistic reasoning. It spells out the main principles of the theory and illustrates them with examples from various domains. It shows how models underlie inductions, explanations, estimates of probabilities, and informal algorithms. In all these cases, a central principle is that the mind represents each sort of possibility in a separate mental model and infers whatever holds in the resulting set of models. Finally, the article reviews what has been accomplished in implementing the theory in a single large-scale computer program, mReasoner. Psychology of Learning and Motivation, Volume 59 © 2014 Elsevier Inc. ISSN 0079-7421, http://dx.doi.org/10.1016/B978-0-12-407187-2.00001-0 All rights reserved. 1 The Psychology of Learning and Motivation, First Edition, 2014, 1-42 Author's personal copy 2 P.
    [Show full text]
  • Social Exchange Reasoning Engages TOM 1
    Social exchange reasoning engages TOM 1 Theory of mind broad and narrow: Reasoning about social exchange engages TOM areas, precautionary reasoning does not Elsa Ermer1,2, Scott A. Guerin1, Leda Cosmides1,2, John Tooby2, Michael B. Miller1 1. Department of Psychology, University of California, Santa Barbara 2. Center for Evolutionary Psychology, University of California, Santa Barbara Short Title: Social exchange reasoning engages TOM Social Neuroscience, 1, 196-219. Special Issue on Neural Correlates of Theory of Mind Rebecca Saxe and Simon Baron-Cohen, Issue editors Corresponding author: Elsa Ermer Department of Psychology University of California Santa Barbara, CA 93106-9660 [email protected], Phone: 805-452-4988 Fax: 805-965-1163 Keywords: Theory of Mind, Social exchange, Deontic reasoning, Cheater detection, Neuroimaging Social exchange reasoning engages TOM 2 Abstract Baron-Cohen (1995) proposed that the theory of mind (TOM) inference system evolved to promote strategic social interaction. Social exchange—a form of cooperation for mutual benefit—involves strategic social interaction and requires TOM inferences about the contents of other individual’s mental states, especially their desires, goals, and intentions. There are behavioral and neuropsychological dissociations between reasoning about social exchange and reasoning about equivalent problems tapping other, more general, content domains. It has therefore been proposed that social exchange behavior is regulated by social contract algorithms: a domain-specific inference system that is functionally specialized for reasoning about social exchange. We report an fMRI study using the Wason selection task that provides further support for this hypothesis. Precautionary rules share so many properties with social exchange rules— they are conditional, deontic, and involve subjective utilities—that most reasoning theories claim they are processed by the same neurocomputational machinery.
    [Show full text]
  • How Many Kinds of Reasoning? Inference, Probability, and Natural Language Semantics
    How many kinds of reasoning? Inference, probability, and natural language semantics Daniel Lassiter, Noah D. Goodman Stanford University April 24, 2017 This paper appeared in Cognition in 2015. Please consult the official version at http:// www.journals.elsevier.com/cognition/. This version corrects a small error, where a value in Table 2 was misreported (see footnote 5). This error did not affect other computations reported. Abstract The “new paradigm” unifying deductive and inductive reasoning in a Bayesian framework (Oaksford & Chater, 2007; Over, 2009) has been claimed to be falsified by results which show sharp differences between reasoning about necessity vs. plausibility (Heit & Rotello, 2010; Rips, 2001; Rotello & Heit, 2009). We provide a probabilistic model of reasoning with modal expressions such as “necessary” and “plausible” informed by recent work in formal semantics of natural language, and show that it predicts the possibility of non-linear response patterns which have been claimed to be problematic. Our model also makes a strong monotonicity prediction, while two-dimensional theories predict the possibility of reversals in argument strength depending on the modal word chosen. Predictions were tested using a novel ex- perimental paradigm that replicates the previously-reported response patterns with a minimal manipulation, changing only one word of the stimulus between conditions. We found a spec- trum of reasoning “modes” corresponding to different modal words, and strong support for our model’s monotonicity prediction. This indicates that probabilistic approaches to reasoning can account in a clear and parsimonious way for data previously argued to falsify them, as well as new, more fine-grained, data.
    [Show full text]
  • Human Reasoning and Cognitive Science
    COGNITIVE SCIENCE HUMAN REASONING AND AN COGNITIVE SCIENCE D COGNITIVE HUMAN REASONING HUMAN REASONING Keith Stenning and Michiel van Lambalgen In Human Reasoning and Cognitive Science, Keith HUMAN Stenning and Michiel van Lambalgen—a cognitive scientist and a logician—argue for the indispensability Keith Stenning is Professor of Human “Once in a while there is a body of work that reconceptualizes a topic of research. of modern mathematical logic to the study of human Communication in the School of Informatics at This book reports and reviews such a body of work. The result is a framing and REASONING reasoning. Logic and cognition were once closely the University of Edinburgh. He is author of Seeing hypotheses about reasoning that, in my judgment, fundamentally reconstructs the SC connected, they write, but were “divorced” in the past psychology of inferential reasoning.... This book will be regarded as the major AND century; the psychology of deduction went from being Reason and coauthor of Introduction to Cognition IEN turning point in the field’s development.” central to the cognitive revolution to being the subject of and Communication (MIT Press, 2006). C COGNITIVE widespread skepticism about whether human reasoning James Greeno, LRDC, University of Pittsburgh E really happens outside the academy. Stenning and van Lambalgen argue that logic and reasoning have V Michiel van Lambalgen is Professor of Logic and S been separated because of a series of unwarranted AN ScIENCE TENNING “This deep and stimulating book, by a leading psychologist and a leading logician, assumptions about logic. Cognitive Science at the University of Amsterdam L is about the choice of logical formalisms for representing actual reasoning.
    [Show full text]
  • Profile of Philip N. Johnson-Laird
    PROFILE Profile of Philip N. Johnson-Laird ur greatest technological doctorate on psycholinguistics and dem- accomplishments, from space onstrated the importance of pragmatic, or Otravel to nuclear power and the contextual, factors in language. The re- creation of the Internet, stand as sults acted as a counterbalance to the testaments to the scientific process and prevailing notion of so-called “trans- mankind’s ability to reason. These ad- formational” grammar, which relates in- vances, however, have been matched with tended meanings with actual spoken equally spectacular technological cata- words. This theory, developed by pre- strophes. “Scientists and technologists are eminent cognitive scientist Noam Chom- rational in principle,” explains Philip sky, had gained much prominence in the Johnson-Laird, a professor of psychology early 1960s. at Princeton University and recently “Transformational grammarians ar- elected member of the National Academy gued that active and passive sentences of Sciences. “But the more information had the same underlying, or ‘deep,’ syn- they have to take into account, the more tax. My work showed that factors such as working memory they need and the the use of active or passive voice affected longer time it takes them to make an in- people’s understanding of a sentence. ference.” When complex technology starts Deep syntax was not the only thing that spiraling out of hand, this abundance mattered” (1). “In truth, I don’t think of information hinders our ability to Chomsky ever thought that deep struc- make reliable decisions. “Eventually,” ture was the only thing that mattered in Johnson-Laird says, “the computational interpretation, but maybe some linguists demands overwhelm them, and this often influenced by him did.” Johnson-Laird culminates in catastrophes.” completed his doctorate in only 2 years, Johnson-Laird has been studying the Philip N.
    [Show full text]