mental model - wikipedia, the free encyclopedia

Mental modelFrom Wikipedia, the free encyclopedia

A mental model is an explanation of someone's thought process about how something works in the real world.It is a representation of the surrounding world, the relationships between its various parts and a person'sintuitive perception about his or her own acts and their consequences. Mental models can help shape behaviourand set an approach to solving problems (akin to a personal algorithm) and doing tasks.

Contents

1 Overview2 History3 Mental models and reasoning

3.1 Principles of mental models3.2 Reasoning with mental models3.3 Criticisms

4 Mental models in system dynamics4.1 Characteristics4.2 Expression of mental models4.3 Mental model in relation to system dynamics and systemic thinking4.4 Single and double-loop learning

4.4.1 Single-loop learning4.4.2 Double-loop learning

5 See also6 References7 Further reading8 External links

Overview

A mental model is a kind of internal symbol or representation of external reality, hypothesized to play a majorrole in cognition, reasoning and decision-making. Kenneth Craik suggested in 1943 that the mind constructs"small-scale models" of reality that it uses to anticipate events.

One example is provided in the following description from physicist Richard Feynman:

I had a scheme, which I still use today when somebody is explaining something that I'm trying to

understand: I keep making up examples. For instance, the mathematicians would come in with a

terrific theorem, and they're all excited. As they're telling me the conditions of the theorem, I

construct something which fits all the conditions. You know, you have a set (one ball) – disjoint

(two balls). Then the balls turn colors, grow hairs, or whatever, in my head as they put more

conditions on. Finally they state the theorem, which is some dumb thing about the ball which isn't

true for my hairy green ball thing, so I say, 'False!'

Jay Wright Forrester defined general mental models as:

Mental model - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Mental_model

1 of 7 3/16/2012 1:21 AM

"The image of the world around us, which we carry in our head, is just a model. Nobody in his

head imagines all the world, government or country. He has only selected concepts, and

relationships between them, and uses those to represent the real system."

In psychology, the term "mental models" is sometimes used to refer to mental representations or mentalsimulation generally. At other times it is used to refer to mental models and reasoning and to the mental modeltheory of reasoning developed by Philip Johnson-Laird and Ruth M.J. Byrne.

History

The term "mental model" is believed to have originated with Kenneth Craik in his 1943 book The Nature of

Explanation. Georges-Henri Luquet in Le dessin enfantin (Children's Drawings), published in 1927 by Alcan,Paris, argued that children construct internal models, a view that influenced, among others, child psychologistJean Piaget.

Philip Johnson-Laird published Mental Models: Towards a Cognitive Science of Language, Inference and

Consciousness in 1983. In the same year, Dedre Gentner and Albert Stevens edited a collection of chapters in a

book also titled Mental Models.[1] The first line of their book explains the idea further: "One function of thischapter is to belabor the obvious; people's views of the world, of themselves, of their own capabilities, and ofthe tasks that they are asked to perform, or topics they are asked to learn, depend heavily on theconceptualizations that they bring to the task." (see: Mental Models (Gentner-Stevens book)).

Since then, there has been much discussion and use of the idea in human-computer interaction and usability byresearchers including Donald Norman and Steve Krug (in his book Don't Make Me Think). Walter Kintsch andTeun A. van Dijk, using the term situation model (in their book Strategies of Discourse Comprehension, 1983),showed the relevance of mental models for the production and comprehension of discourse.

Mental models and reasoning

One view of human reasoning is that it depends on mental models. In this view, mental models can beconstructed from perception, imagination, or the comprehension of discourse (Johnson-Laird, 1983). Suchmental models are akin to architects' models or to physicists' diagrams in that their structure is analogous to thestructure of the situation that they represent, unlike, say, the structure of logical forms used in formal ruletheories of reasoning. In this respect, they are a little like pictures in the "picture" theory of language describedby philosopher Ludwig Wittgenstein in 1922. Philip Johnson-Laird and Ruth M.J. Byrne developed a theory ofmental models which makes the assumption that reasoning depends, not on logical form, but on mental models(Johnson-Laird and Byrne, 1991).

Principles of mental models

Mental models are based on a small set of fundamental assumptions (axioms), which distinguish them fromother proposed representations in the psychology of reasoning (Byrne and Johnson-Laird, 2009). Each mentalmodel represents a possibility. A mental model represents one possibility, capturing what is common to all thedifferent ways in which the possibility may occur (Johnson-Laird and Byrne, 2002). Mental models are iconic,i.e., each part of a model corresponds to each part of what it represents (Johnson-Laird, 2006). Mental modelsare based on a principle of truth: they typically represent only those situations that are possible, and each modelof a possibility represents only what is true in that possibility according to the proposition. However, mentalmodels can represent what is false, temporarily assumed to be true, for example, in the case of counterfactualconditionals and counterfactual thinking (Byrne, 2005).


2 of 7 3/16/2012 1:21 AM

Reasoning with mental models

People infer that a conclusion is valid if it holds in all the possibilities. Procedures for reasoning with mentalmodels rely on counter-examples to refute invalid inferences; they establish validity by ensuring that aconclusion holds over all the models of the premises. Reasoners focus on a subset of the possible models ofmultiple-model problems, often just a single model. The ease with which reasoners can make deductions isaffected by many factors, including age and working memory (Barrouillet, et al., 2000). They reject aconclusion if they find a counterexample, i.e., a possibility in which the premises hold, but the conclusion doesnot (Schroyens, et al. 2003; Verschueren, et al., 2005).

Criticisms

Scientific debate continues about whether human reasoning is based on mental models, versus formal rules ofinference (e.g., O'Brien, 2009), domain-specific rules of inference (e.g., Cheng & Holyoak, 2008; Cosmides,2005), or probabilities (e.g., Oaksford and Chater, 2007). Many empirical comparisons of the different theorieshave been carried out (e.g., Oberauer, 2006).

Mental models in system dynamics

Characteristics

A mental model is generally:

founded on hardly qualifiable, impugnable, obscure, or incomplete factsflexible – is considerably variable in positive as well as in negative senseeffects as information filter – causes selective perception, perception of only selected parts ofinformationcompared with the complexities surrounding the world, it is very limited, and even when the scientificmodel is extensive and in accordance with a certain reality in the derivation of logical consequences of it.It must take into account such restrictions on working memory; i.e., well-known rules on the maximumnumber of elements that people are suddenly able to remember, gestaltismus or failure of the principles oflogic, etc.sources of information, which one can not find anywhere else, are available at any time and can be

used.[2][3][4]

Mental models are a fundamental way to understand organizational learning. Mental models are "deeply held

images of thinking and acting."[5] Mental models are so basic to understanding of the world that people arehardly conscious of them.

Expression of mental models

Three basic forms are typically used: [2]

Polygons – whose vertices sharing the edge represent related items.Causal-loop diagrams – displaying tendency and a direction of information connections and the resultingcausalityFlow diagrams – a more appropriate way to express a dynamic system.


3 of 7 3/16/2012 1:21 AM

Those forms allow showing a mental model, as a written model, which can help remember more details, such asmore items in a long list.

Mental model in relation to system dynamics and systemic thinking

In the simplification of reality, creating a model can find a sense of reality, seeking to overcome systemicthinking and system dynamics.

These two disciplines can help to construct a better coordination with the reality of mental models and simulateit accurately. They increase the probability that the consequences of how to decide and act in accordance with

how to plan.[2]

System dynamics – extending mental models through the creation of explicit models, which are clear,easily communicated and can be compared with each other.Systemic thinking – seeking the means to improve the mental models and thereby improve the quality ofdynamic decisions that are based on mental models.

Single and double-loop learning

After analyzing the basic characteristics, it is necessary to bring the process of changing the mental models, orthe process of learning. Learning is a back-loop process, and feedback loops can be illustrated as: single-looplearning or double-loop learning.

Single-loop learning

Mental models affect the way people work with the information and determine the final decision. The decisionitself changes, but the mental models remain the same. It is the predominant method of learning, because it isvery convenient. One established mental model is fixed, so the next decision is very fast.

Double-loop learning

A double-loop process (see diagram below) is used when it is necessary to change the mental model on which adecision depends. Unlike single loops, this model includes a shift in understanding, from simple and static tobroader and more dynamic, such as taking into account the changes in the surroundings and the need for

expression changes in mental models.[3]

Process of learning


4 of 7 3/16/2012 1:21 AM

Feedback process Single-loop learning Double-loop learning

See also

Internal modelCognitive psychologyCognitive mapEducationalpsychologyFolk psychologyList of cognitivebiasesLovemapMacrocognitionMeme

Metaknowledgeabstract modelNeuroeconomicsNeuro-LinguisticProgrammingNeuroplasticityKnowledge representationPsyche (psychology)QualiaSelf-Stereotyping

Social intuitionismSocial psychologySpeed of thoughtSystem DynamicsThought disorderConceptual ModelText and ConversationTheoryOODA Loop

References

^ "Mental models" (http://www.lauradove.info/reports/mental%20models.htm) , report at www.lauradove.info.1.^ a b c Šusta, Marek. "Několik slov o systémové dynamice a systémovém myšlení" (http://proverbs.cz/media/art/SM_ST.pdf) (in Czech) (PDF). Proverbs, a.s.. pp. 3–9. http://proverbs.cz/media/art/SM_ST.pdf. Retrieved2009-01-15.

2.

^ a b Mildeova, S., Vojtko V. (2003) (in Czech). Systémová dynamika. Prague: Oeconomica. pp. 19–24.ISBN 80-245-0626-2.

3.

^ Ford, David N., Sterman, John D.. "Expert Knowledge Elicitation to Improve Mental and Formal Models"(http://web.mit.edu/jsterman/www/ford_sterman_elicit_1.pdf) (PDF). Cambridge, Massachusetts, USA -Massachusetts Institute of Technology. pp. 18–23. http://web.mit.edu/jsterman/www/ford_sterman_elicit_1.pdf.Retrieved 11.1.2009.

4.

^ "LEADING FOR A CHANGE", Ralph Jacobson, 2000, Chapter 5, Page1025.

Sources

Barrouillet, P. et al. (2000). Conditional reasoning by mental models: chronometric and developmentalevidence. Cognit. 75, 237-266.Byrne, R.M.J. (2005). The Rational Imagination: How People Create Counterfactual Alternatives to


5 of 7 3/16/2012 1:21 AM

Reality. Cambridge MA: MIT Press.Byrne, R.M.J. & Johnson-Laird, P.N. (2009). 'If' and the problems of conditional reasoning. Trends in

Cognitive Sciences. 13, 282-287Cheng, P.C. and Holyoak, K.J. (2008) Pragmatic reasoning schemas. In Reasoning: studies of human

inference and its foundations (Adler, J.E. and Rips, L.J., eds), pp. 827–842, Cambridge University PressCosmides, L. et al. (2005) Detecting cheaters. Trends in Cognitive Sciences. 9,505–506Oberauer K. (2006) Reasoning with conditionals: A test of formal models of four theories. Cognit.

Psychol. 53:238–283.O’Brien, D. (2009). Human reasoning requires a mental logic. Behav. Brain Sci. 32, 96–97Oaksford, M. and Chater, N. (2007) Bayesian Rationality. Oxford University PressJohnson-Laird, P.N. (1983). Mental Models: Towards a Cognitive Science of Language, Inference, and

Consciousness. Cambridge: Cambridge University Press.Johnson-Laird, P.N. (2006) How We Reason. Oxford University PressJohnson-Laird, P.N. and Byrne, R.M.J. (2002) Conditionals: a theory of meaning, inference, andpragmatics. Psychol. Rev. 109, 646–678Schroyens, W. et al. (2003). In search of counterexamples: Deductive rationality in human reasoning.Quart. J. Exp. Psychol. 56(A), 1129–1145.Verschueren, N. et al. (2005). Everyday conditional reasoning: A working memory-dependent tradeoffbetween counterexample and likelihood use. Mem. Cognit. 33, 107-119.

Further reading

Georges-Henri Luquet (2001). Children's Drawings. Free Association Books. ISBN 1-85343-516-3Groesser, S.N. (2012). Mental model of dynamic systems. In N.M. Seel (Ed.). The encyclopedia of thesciences of learning (Vol. 5, pp. 2195-2200). New York: Springer.Groesser, S.N. & Schaffernicht, M. (2012). Mental Models of Dynamic Systems: Taking Stock and

Looking Ahead. System Dynamics Review, (in press), Wiley.Johnson-Laird, P.N. 2005. The History of Mental Models (http://weblamp.princeton.edu/~psych/psychology/research/johnson_laird/pdfs/2005HistoryMentalModels.pdf)Johnson-Laird, P.N., 2005. Mental Models, Deductive Reasoning, and the Brain (http://cogsci.bme.hu/~babarczy/Orak/BMEpostgrad/semantics/2005spring/Johnson-Lairdmental_models.pdf)Jones, N. A. et al. (2011). "Mental Models: an interdisciplinary synthesis of theory and methods(http://www.ecologyandsociety.org/vol16/iss1/art46/) " Ecology and Society.16 (1): 46.Robles-De-La-Torre, G. & Sekuler, R. (2004). "Numerically Estimating Internal Models of DynamicVirtual Objects (http://www.roblesdelatorre.com/gabriel/GR-RS-Estimating-Internal-Models.pdf) ". In:ACM Transactions on Applied Perception 1(2), pp. 102–117.Sterman, John D. A Skeptic’s Guide to Computer Models, Massachusetts Institute of Technology(http://sysdyn.clexchange.org/sdep/Roadmaps/RM9/D-4101-1.pdf)

External links

Mental Models and Usability (http://www.lauradove.info/reports/mental%20models.htm)Mental Models and Reasoning Laboratory (http://www.princeton.edu/~mentmod)What's Your Idea of a Mental Model? (http://www.boxesandarrows.com/view/whats_your_idea_of_a_mental_model_)Systems Analysis, Modelling and Prediction Group, University of Oxford (http://www.eng.ox.ac.uk/samp/)


6 of 7 3/16/2012 1:21 AM

System Dynamics Society (http://www.systemdynamics.org/)

Retrieved from "http://en.wikipedia.org/w/index.php?title=Mental_model&oldid=479592911"Categories: Scientific modeling Cognitive psychology Information Information science

Cognitive science Thought Conceptual models

This page was last modified on 1 March 2012 at 04:07.Text is available under the Creative Commons Attribution-ShareAlike License; additional terms mayapply. See Terms of use for details.Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.


7 of 7 3/16/2012 1:21 AM

mental model - wikipedia, the free encyclopedia

Documents