From altmann at gmu.edu Fri May 5 13:28:20 2000 From: altmann at gmu.edu (Erik M. Altmann) Date: Fri, 5 May 2000 12:28:20 -0500 Subject: Primacy and recency effects in order memory Message-ID: A CogSci2000 paper addressing primacy and recency effects in memory for order (sequel to an ICCM paper that dealt with positional uncertainty). The model described here is based on ACT-R/PM's associative-learning and attention mechanisms, and provides a theory of incidental acquisition of order memory while doing without the partial matcher. Comments welcome. Erik. Memory in chains: Modeling primacy and recency effects in memory for order Memory for order is fundamental in everyday cognition, supporting basic processes like causal inference. However, theories of order memory are narrower, if anything, than theories of memory generally. The memory-in-chains (MIC) model improves on existing theories by explaining a family of order memory effects, by explaining more processes, and by making strong predictions. This paper examines the MIC model's explanation of primacy and recency effects, and the prediction that primacy should dominate recency. This prediction is supported by existing data sets, suggesting that Estes's (1997) perturbation model, dominant among theories of order memory, is incorrect. Fits to data are presented and compared with fits of other models. http://hfac.gmu.edu/People/altmann/altm00mic2.pdf ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Erik M. Altmann, PhD Psychology 2E5 George Mason University Fairfax, VA 22030 703-993-1326 (voice) 703-993-1330 (fax) altmann at gmu.edu hfac.gmu.edu/~altmann ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ From niels at tcw2.ppsw.rug.nl Fri May 12 06:49:50 2000 From: niels at tcw2.ppsw.rug.nl (Niels Taatgen) Date: Fri, 12 May 2000 12:49:50 +0200 Subject: Proceedings ICCM-2000 Message-ID: Announcement ============ >From 23 to 25 March 2000 the third international conference on cognitive modeling (ICCM-2000) has been organized by the University of Groningen en the Delft University of Technology. Its proceedings can be ordered through the publisher, Universal Press, and cost 50 guilders (~$23). Universal Press Riethoek 36 3901 KS Veenendaal +31 318 516356 unipress at worldonline.nl Information on the conference, and information on its predecessors and succesors, can be found on the website: http://tcw2.ppsw.rug.nl/iccm The proceedings, edited by Niels Taatgen and Jans Aasman, have 300 pages and contain papers that have been presented at the conference, and abstracts of the talks of the two invited speakers, John Anderson and Axel Cleeremans, and of posters presented at the conference. ISBN: 90-803470-7-8 Table of contents of the papers: Erik Altmann, Memory in Chains: A dual-code associative model of positional uncertainty Erik Altmann and Wayne Gray, The Anatomy of Serial Attention: An Integrated Model of Set Shifting and Maintenance Jean P. Banquet, Philippe Gaussier, Arnaud Revel, Sache Leprjtre, Sorin Moga, Mathias Quoy and Ybes Burnod, Guided Navigation as implemented by a mobile agent Christina Bartl, Metacognition in Complex Problem Solving: How to implement the effects of metacognition on goal selection in the architecture of PSI Bradley J. Best and Herbert A. Simon, Simulating Human Performance on the Traveling Salesman Problem Raluca Budiu and John R. Anderson, Integration of Background Knowledge in Sentence Processing: a Unified Theory of Metaphor Understanding, Semantic Illusions and Text Memory Nathalie Chaignaud, Ikram Cheikhrouhou and Anh Nguyen-Xuan, Generalization of a Cognitive Model for Problem Solving with Incomplete Information Anna Louise Cox and Richard M. Young, Device-Oriented and Task-Oriented Exploratory Learning of Interactive Devices Steve Croker, Julian M. Pine and Fernand Gobet, Modelling optional infinitive phenomena: A computational account of tense optionality in childrens speech Frank Detje, Comparison of the PSI-theory with human behaviour in a complex task Dietrich Dvrner, The Simulation of Extreme Forms of Behaviour Stan Franklin, Modeling Consciousness and Cognition in Software Agents Michael Freed and Roger Remington, Making Human-Machine System Simulation a Practical Engineering Tool: An APEX Overview Daniel Freudenthal, An Instance Learning Model of Task-Action Mappings Danilo Fum and Fabio Del Missier, Climbing the mazes: A cognitive model of spatial planning Kevin Gluck, An ACT-R/PM Model of Algebra Symbolization Fernand Gobet, Long-term working memory: A computational implementation for chess expertise Fernand Gobet and Frank E. Ritter, Individual Data Analysis and Unified Theories of Cognition: A Methodological Proposal Wayne D. Gray, Michael J. Schoelles and Wai-Tat Fu, Modeling a Continuous Dynamic Task Gary Jones, Fernand Gobet and Julian M. Pine, Learning novel sound patterns Klaus Kessler and Gert Rickheit, Dynamic Binding and Context Influences during Scene Perception: Simulations and Experimental Results Christian Lebiere, Dieter Wallach and Robert L. West, A Memory-based Account of the Prisoners Dilemma and Other 2x2 Games Frank Lee and John Anderson, Modeling Eye-Movements of Skilled Performance in a Dynamic Task Peter Lonsdale and Frank E. Ritter, Soar/Tcl-PM: Extending the Soar Architecture to Include a Widely Applicable Virtual Eye and Hand Michael Matessa and John Anderson, An ACT-R Model of Adaptive Communication Lorna Peters, Neil Davey, Pam Smith, David Messer, Connectionist Modelling of Skill Development: Object Balancing in Young Children Hedderik van Rijn, Maarten van Someren and Han van der Maas, Modeling Developmental Transitions in ACT-R. Simulating balance scale behaviour by symbolic and subsymbolic learning Ardi Roelofs, Control of language: A computational account of the Stroop asymmetry Deb Roy, A Sensor-Grounded Computational Model of Early Word Learning Dario Salvucci, An Integrated Model of Eye Movements and Visual Attention Michael J. Schoelles and Wayne D. Gray, Argus Prime: Modeling Emergent Microstrategies in a Complex, Simulated Task Environment Dieter Wallach and Christian Lebiere, Learning of event sequences: An architectural approach From frg at psyc.nott.ac.uk Mon May 15 12:39:12 2000 From: frg at psyc.nott.ac.uk (Fernand Gobet) Date: Mon, 15 May 2000 16:39:12 +0000 Subject: Research Associate (Acquisition of Syntax) Message-ID: Research Associate (Acquisition of Syntax) School of Psychology, University of Nottingham Applications are invited for a Research Associate to work on a Leverhulme-funded project on syntax acquisition. The successful candidate will carry out modelling research on early language acquisition, and in particular on syntax acquisition, under the supervision of Dr J Pine and Dr F Gobet. Information about related projects is available on the WWW at: http://www.psychology.nottingham.ac.uk/research/credit/projects/syntax_acquisiti on/main.html The person appointed will be expected to contribute to the refinement of a computer model of syntax acquisition. Candidates should have a PhD, MSc or BSc in computer science, cognitive science, or psychology, and have very good computing skills. Knowledge of Lisp or of a similar computer language will be an advantage. Experience with development of graphical interfaces, and/or knowledge in computational modelling, psycholinguistics and/or linguistics will also be a plus. Salary will be within the range #16,286 - #24,479 per annum (under review), depending on qualifications and experience. This post is available from July 2000 and will be offered on a fixed-term contract for a period of 18 months. Informal enquiries may be addressed to Dr Pine, tel: 0115 951 5285, Email: Julian.Pine at Nottingham.ac.uk or Dr Gobet, tel: 0115 951 5402, Email: Fernand.Gobet at Nottingham.ac.uk Candidates should send a detailed CV, a statement of research interests, together with the names and addresses of two referees, to Dr F Gobet, School of Psychology, The University of Nottingham, University Park, Nottingham, NG7 2RD. Fax: 0115 951 5324. Closing date: 15 June 2000. From gray at gmu.edu Mon May 22 18:31:56 2000 From: gray at gmu.edu (Wayne Gray) Date: Mon, 22 May 2000 18:31:56 -0400 Subject: Milliseconds Matter Message-ID: New paper. Just accepted for publication. Can be downloaded from: http://hfac.gmu.edu/~mm Gray, W. D., & Boehm-Davis, D. A. (in press). Milliseconds Matter: An introduction to microstrategies and to their use in describing and predicting interactive behavior. Journal of Experiment Psychology: Applied. ABSTRACT Interactive behavior is constrained by the design of the artifacts available (such as a mouse and button) as well as by the ways in which elementary cognitive, perceptual, and motor operations can be combined. Any two basic activities, for example (a) moving to and (b) clicking on a button, can be combined to yield a limited number of microstrategies. The results of an experimental study suggest that alternative microstrategies can be deployed that shave milliseconds from routine interactive behavior. Data from a usability study are used to explore the potential of microstrategies for (a) bracketing the range of individual performance (b) profiling individual differences, and (c) diagnosing mismatches between expected and obtained performance. These two studies support the arguments that the microstrategies deployed can be sensitive to small features of an interface and that task analyses at the millisecond level can inform design. -- _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ Wayne D. Gray, Program Director HUMAN FACTORS & APPLIED COGNITIVE PROGRAM SNAIL-MAIL ADDRESS (FedX et al) VOICE: +1 (703) 993-1357 George Mason University FAX: +1 (703) 993-1330 ARCH Lab/HFAC Program ********************* MSN 3f5 * Work is infinite, * Fairfax, VA 22030-4444 * time is finite, * http://hfac.gmu.edu * plan accordingly. * _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/