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{{Expand section|date=June 2010}}
First proposed by [[James Bieri]] in 1955.<ref name='bell.2004'/>
==In psychology==▼
{{More footnotes|date=April 2010}}▼
Cognitive complexity is a [[psychological]] characteristic or psychological variable that indicates how complex or simple is the [[framing (social sciences)|frame]] and [[perception|perceptual]] skill of a person. A person who is measured high on [[cognitive]] complexity tends to perceive nuances and subtle differences which a person with a lower measure, indicating a less complex cognitive [[structure]] for the task or activity, does not.▼
{{Quote box |quote=an aspect of a person's cognitive functioning which at one end is defined by the use of many constructs with many relationships to one another (complexity) and at the other end by the use of few constructs with limited relationships to one another (simplicity) |source=[[Lawrence Pervin]], ''Personality''<ref name='Rauterberg'/> |width=33% |align=right}}▼
It is used as part of one of the several variations of the viable non-empirical evaluation model [[GOMS]] (goals, operators, methods, and selection rules); in particular the [[GOMS/CCT]] methodology.▼
Cognitive complexity can have various meanings:▼
* the number of mental structures we use, how abstract they are, and how elaborately they interact to shape our perceptions.▼
* "an individual-difference variable associated with a broad range of communication skills and related abilities ... [which] indexes the degree of differentiation, articulation, and integration within a cognitive system".<ref>Burleson, B.R., & Caplan, S.E. (1998), "Cognitive complexity". In J.C. McCroskey, J.A. Daly, M.M. Martin, & M.J. Beatty (Eds.), ''Communication and personality: Trait perspectives'' (233–286). Creskill, NJ: Hampton Press</ref>▼
==In computer science==▼
{{further|Complexity}}▼
In [[human–computer interaction]], cognitive (or psychological) complexity distinguishes human factors (related to [[psychology]] and human cognition) from, for example, [[computational complexity theory|computational complexity]].<ref name=thomas:2008>{{cite book |first1=John C. |last1=Thomas |first2=John T. |last2=Richards |editor-last=Sears |editor-first=Andrew |editor2-last=Jacko |editor2-first=Julie A. |chapter=Achieving Psychological Simplicity: Methods And Measures To Reduce Cognitive Complexity |year=2008 |pages=498–507 |title=The human–computer interaction handbook: Fundamentals, Evolving Technologies and Emerging Applications |edition=2nd |___location=Mahwah, New Jersey |publisher=Lawrence Erlbaum Associates |chapter-url=http://www.isrc.umbc.edu/HCIHandbook/ |isbn=978-0-8058-5870-9}}</ref>▼
==In artificial intelligence==
In an attempt to explain how humans perceive relevance, cognitive complexity is defined as an extension of the notion of [[Kolmogorov complexity]]. It amounts to the length of the shortest description ''available to the observer''.
Here is an example :
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To 'generate' an event such as an encounter with an Inuit woman in Congo, one must add up the complexity of each event in the causal chain that brought her there. The significant gap between both complexities (hard to produce, easy to describe) makes the encounter improbable and thus narratable.
▲==In computer science==
▲{{further|Complexity}}
▲In [[human–computer interaction]], cognitive (or psychological) complexity distinguishes human factors (related to [[psychology]] and human cognition) from, for example, [[computational complexity theory|computational complexity]].<ref name="thomas:2008">{{cite book|title=The human–computer interaction handbook: Fundamentals, Evolving Technologies and Emerging Applications|last1=Thomas|first1=John C.
▲==In psychology==
▲{{More footnotes|date=April 2010}}
Cognitive complexity is a [[psychological]] characteristic or psychological variable that indicates how complex or simple is the [[framing (social sciences)|frame]] and [[perception|perceptual]] skill of a person.
▲
{{Quote box
▲
| source = [[Lawrence Pervin]], ''Personality''<ref name='Rauterberg'/>
| width = 33%
| align = right
}}
▲It is used as part of one of the several variations of the viable non-empirical evaluation model [[GOMS]] (goals, operators, methods, and selection rules); in particular the [[GOMS/CCT]] methodology.
▲Cognitive complexity can have various meanings:
▲* the number of mental structures we use, how abstract they are, and how elaborately they interact to shape our perceptions.
▲* "an individual-difference variable associated with a broad range of communication skills and related abilities ... [which] indexes the degree of differentiation, articulation, and integration within a cognitive system".<ref>Burleson, B.R., & Caplan, S.E. (1998), "Cognitive complexity". In J.C. McCroskey, J.A. Daly, M.M. Martin, & M.J. Beatty (Eds.), ''Communication and personality: Trait perspectives'' (233–286). Creskill, NJ: Hampton Press</ref>
==Related terms==
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