Folk Psychology vs. Mental Simulation:
How Minds Understand Minds

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Robert Gordon
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This page provides access to work that was discussed at, inspired by, or is otherwise relevant to the seminar "Folk Psychology vs. Mental Simulation: How Minds Understand Minds," a National Endowment for the Humanities Summer Seminar for College Teachers held at the University of Missouri - St. Louis, from June 14 to July 16, 1999.

The seminar director was Robert Gordon, co-originator (with Jane Heal) of the "Simulation Theory" of "folk psychology". The theory of "folk psychology," i.e. of how ordinary people understand, predict, and explain one another's actions, thoughts, and motivations, is of considerable importance in contemporary Psychology, Cognitive Science, and Philosophy of Mind, and is thought to be highly relevant to the understanding of psychological disorders such as autism. The focus of this seminar was principally on the more philosophical aspects of the issue.

For a brief introduction to the seminar topic, prepared by Professor Gordon for prospective participants, click here. For a more complete introduction to the topic by Professor Gordon, see his entry on "Folk Psychology as Mental Simulation" from the Stanford Encyclopedia of Philosophy, or the draft of his entry on "Simulation Theory" (co-written with Joe Cruz) for the Encyclopedia of Cognitive Science (forthcoming from Nature Publishing Group). For an account of the leading rival theoretical position (sometimes called "theory theory"), see "Folk Psychology as a Theory" (by Ian Ravenscroft, also from the Stanford Encyclopedia of Philosophy).


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Seminar Director, Robert Gordon

Selected articles:

Folk Psychology as Mental Simulation (from the Stanford Encyclopedia of Philosophy).

Simulation and the Explanation of Action (html)

Autism and the "Theory of Mind" Debate (html)

Sellars's Ryleans Revisited (html)

Sympathy, Ethics, and the Impartial Spectator (pdf)

Simulation and Reason Explanation: The Radical View (html)


Unpublished Papers, Talks, Notes:

Draft entry on "Simulation Theory" (co-written with Joe Cruz for the Encyclopedia of Cognitive Science - forthcoming from Nature Publishing Group).

Developing Commonsense Psychology: Experimental Data and Philosophical Data

Reason Explanations and Counterfactuals

Representing Minds


Visiting Speakers:

Alvin Goldman

The Psychology of Folk Psychology
Consciousness, Folk Psychology, and Cognitive Science

Jane Heal

Stephen Stich

Reading One's Own Mind. (by Stephen Stich & Shaun Nichols)

A Cognitive Theory of Pretense. (pdf) (by Stephen Stich & Shaun Nichols)
Abstract: Recent accounts of pretense have been underdescribed in a number of ways. In this paper, we present a much more explicit cognitive account of pretense. We begin by presenting a number of real examples of pretense in children and adults. These examples bring out several features of pretense that any adequate theory of pretense must accommodate, and we use these features to develop our theory of pretense. On our theory, pretense representations are contained in a separate workspace, a Possible World Box which is part of the basic architecture of the human mind. The representations in the Possible World Box can have the same content as beliefs. Indeed, we suggest that pretense representations are in the same representational "code" as beliefs and that the representations in the Possible World Box are processed by the same inference and UpDating mechanisms that operate over real beliefs. Our model also posits a Script Elaborator which is implicated in the embellishment that occurs in pretense. Finally, we claim that the behavior that is seen in pretend play is motivated not from a "pretend desire", but from a real desire to act in a way that fits the description being constructed in the Possible World Box. We maintain that this account can accommodate the central features of pretense exhibited in the examples of pretense, and we argue that the alternative accounts either can't accommodate or fail to address entirely some of the central features of pretense.

* Other papers on Folk Psychology and Simulation Theory by Stich, Nichols et al.


Seminar Participants:
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Angela Arkway * Chris Hill
Brad Armour-Garb Dan Hutto *
Larry Beyer Louise Roeska-Hardy
Brad Cohen Eric Schwitzgebel *
Joe Cruz * Nigel Thomas *
Steven Daniel Bill Wilkerson *
Jim Garson * Julie Yoo
Brie Gertler *


Angela Arkway

Simulation, Folk Psychological Explanation, and Causal Laws
Abstract: The assumption that commonsense psychological explanations of behavior are causal underlies current debate between simulation theory and theory theory regarding the nature of cognitive mechanism responsible for our folk psychological practices. Theory theorists claim that these explanations are subsumed by the covering law model of causal explanation. Simulationists are not explicit about the nature of the explanations produced by simulation. In what follows, I propose a set of plausible conditions that a correct causal simulation-produced folk psychological explanation will satisfy and point out two prima facie problems. In discussing a possible solution, I discover that the latter incurs the need for some sort of causal law. An examination of two likely candidates for these laws reveals that neither is capable of playing the role required. I then suggest alternative routes that simulationists might explore in order to provide simulation theory with a sorely-needed account of the nature of the explanations produced by simulation.
The Simulation Theory and Explanations that 'Make Sense of Behavior'
Abstract: Underlying the current debate between simulation theory and theory theory is the assumption that folk psychological explanations of behavior are causal. Simulationists Martin Davies, Tony Stone, and Jane Heal claim that folk psychological explanations are explanations that make sense of another person by citing the thoughts important to the determination of his behavior on a given occasion. I argue that it is unlikely these explanations will be causal. Davis et al. base their claim on the assumption that a certain isomorphism obtains between the cognitive mechanisms of human beings. Investigation into the nature of the isomorphism required reveals that it is of a sort that is unlikely to obtain. I suggest that in order to maintain their challenge to theory theory, simulationists must either motivate and describe a non-causal simulation-based account of folk psychological explanation or else delineate a causal account that attributes a nonessential, heuristic role to simulation.

Brad Armour-Garb

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Larry Beyer

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Brad Cohen

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Joe Cruz

Draft entry on Simulation Theory (co-written with Robert Gordon for the Encyclopedia of Cognitive Science - forthcoming from Nature Publishing Group).

Simulation & the Psychology of Sociopathy (pdf) (Continuing Commentary from Behavioral and Brain Sciences (1997) 20:3, pp. 525-7)

Steven Daniel

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Jim Garson

Simulation and Connectionism: What is the Connection?
Abstract: This paper concerns the relationship between connectionist architecture and the debate between simulation theory and the theory theory of folk psychology. It has been proposed that PDP models (connectionist models that employ distributed non-symbolic representations) are particularly well suited to simulation theory. So evidence that these models accurately describe brain processing would tend to discredit the theory theory. The purported linkage between PDP architecture and simulation theory is carefully examined. Problems are uncovered related to the nature of representation in simulation theory. It is argued that a minimal requirement for a version of simulation theory which counts as a meaningful hypothesis in cognitive science is that the brain contain propositional attitude representations which can be shared by different processors. However the argument for a link between PDP architecture and simulation theory depend on the idea that PDP models lack such shareable representations. So a defender of the the connection between PDP models and simulation theory is caught in a dilemma. If PDP models allow shareable representations, then arguments for a linkage fail, and if they do not, then PDP models are incompatible with versions of simulation theory that can be taken seriously in cognitive science. The upshot is that there are reasons for thinking that PDP architecture is the enemy of both TT and ST. It is more likely that PDP architecture recommends mechanisms for explaining folk psychological abilities that defy easy classification under TT and ST rubrics. So the contribution of connectionism may be to undermine faith in the relevance of the debate between theory theorists and simulation theorists, and to suggest an alternative.

Brie Gertler

Simulation Theory on Conceptual Grounds
Abstract: This paper provides an argument for Simulation Theory ("ST") which is based on a thesis about mental concepts. While this argument has not been articulated before, it captures the sort of conceptual grounds which originally fueled ST, and which the recent emphasis on empirical data in the debate with Theory Theorists has obscured. I begin by articulating the thesis that mental concepts are indexical. The role of indexical thought in avoiding pragmatic inconsistencies such as Moore paradoxical utterances attests to the plausibility of this thesis. I then show that this thesis underwrites a valid argument for ST, in that TT (Theory Theory) cannot accommodate the indexicality of mental concepts. Next, I demonstrate that ST's leading proponents are implicitly committed to this premise and, moreover, that this commitment is part of what motivates them to accept ST. The disagreements among simulation theorists derive from their competing accounts of how, precisely, ST accommodates mental concepts' indexicality. The paper's broader aim is to bring renewed attention to the neglected conceptual dimension of the "ST vs. TT" debate.

Chris Hill

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Dan Hutto

Dan Hutto's Home Page
with links to his articles and information on his books.
Minding Our Language: The Role of Simulation in Linguistic Interpretation
From Inside/Out 1994.

Louise Roeska-Hardy

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Eric Schwitzgebel

A Difficulty for Simulation Theory Due to the Close Connection of Pretense and Action in Early Childhood
(Revised version, August 3rd 2000)
Abstract: Much of the appeal of simulation theory stems from the fact that a conscious process something like simulation seems to underlie certain of our mental state attributions. However, if young children consciously simulate, and if simulation is a form of pretense, then we should expect them, at least sometimes, to act out their simulations. Since we do not ordinarily see this, it follows that children either do not consciously simulate or that simulation is further removed from pretense than its advocates typically claim.

Nigel Thomas

Attitude and Image, or, What Will Simulation Let Us Eliminate?
Radical Simulation Theory, propositional attitude eliminativism, and the Perceptual Activity theory of imagery and imagination: recipe for a new slant on the mind-body problem?
Imagination, Mental Imagery, Consciousness, & Cognition.
Nigel Thomas' home page, with links to his articles, and other relevant links.

Bill Wilkerson

Simulation, Theory and the Frame Problem: The Interpretive Moment.

Julie Yoo

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Papers by Others:

Dôna Warren
Externalism and Causality: Simulation and the Prospects for a Reconciliation. Published in Mind & Language.

Martin Davies & Tony Stone
Folk Psychology and Mental Simulation. To appear in Contemporary Issues in the Philosophy of Mind, edited by Anthony O'Hear - Cambridge University Press.

Thomas Suddendorf & Claire M. Fletcher-Flinn
Theory of Mind and the Origins of Divergent Thinking. Published in Journal of Creative Behavior, (1997) 31: 169-179.

Paul Thagard & Allison Barnes
Empathy and Analogy. Published in Dialogue: Canadian Philosophical Review, (1997) 36: 705-720.

John Barresi and Chris Moore
Intentional Relations and Social Understanding. Published in Behavioral and Brain Sciences, (1996) 19(1): 107-154.

Peter Carruthers
Autism as Mind-Blindness: an elaboration and partial defence. Published in P.Carruthers and P.K. Smith (eds.), Theories of Theories of Mind. Cambridge: Cambridge University Press, 1996, 257-73.

Peter Carruthers
Simulation and Self-knowledge. Published in P.Carruthers and P.K. Smith (eds.), Theories of Theories of Mind. Cambridge: Cambridge University Press, 1996, 22-38.

Chris Jarrold, Peter Carruthers, Peter K. Smith & Jill Boucher
Pretend Play: Is it Metarepresentational? Published in Mind and Language (1994) 9: 445-468.

Stephanie D. Preston & Frans B. M. de Waal
Empathy: Its ultimate and proximate bases. Behavioral and Brain Sciences, 2001.

Anyone who has, or knows of, other on-line articles on the debate over simulation theory and folk psychology, please email the webmaster, Nigel Thomas, to have a link added here.


Simulation and Folk Psychology Links:

Anyone who has, or knows of, other sites devoted to simulation theory or folk psychology, please email the webmaster, Nigel Thomas, to have a link added here.


Some photographs from the seminar (courtesy of Joe Cruz).


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