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Distributed cognition (DCog) is a theory of psychology developed in the 1990s by Edwin Hutchins. Using insights from sociology, cognitive science, and the psychology of Vygotsky (cf activity theory) it emphasizes the social aspects of cognition.

Distributed cognition is a branch of cognitive science that proposes that human knowledge and cognition are not confined to the individual. Instead, it is distributed by placing memories, facts, or knowledge on the objects, individuals, and tools in our environment. Distributed cognition is a useful approach for (re)designing social aspects of cognition by putting emphasis on the individual and his/her environment. Distributed cognition views a system as a set of representations, and models the interchange of information between these representations. These representations can be either in the mental space of the participants or external representations available in the environment.

Distributed cognition as a theory of learning, i.e. one in which the development of knowledge is attributed to the system of human agents interacting dynamically with artifacts, has been widely applied in the field of distance learning, especially in relation to Computer Supported Collaborative Learning (CSCL) and other computer-supported learning tools. Distributed cognition illustrates the process of interaction between people and technologies in order to determine how to best represent, store and provide access to digital resources and other artifacts.

With the new research that is emerging in this field, the overarching concept of DCog enhances our understanding of interaction between humans, machines and the environment.

• Hutchins, E. (1995) Cognition in the Wild (ISBN 0-262-58146-9) (MIT Press).
• Hutchins, E. (1995) "How a cockpit remembers its speeds". Cognitive Science, 19, 265-288.
• Norman, D.A. (1993) "Things that make us smart" (Addison-Wesley).
• Perry, M. (2003) "Distributed Cognition". In J.M. Carroll (Ed.) "HCI Models, Theories, and Frameworks: Toward an Interdisciplinary Science" (Morgan Kaufmann) 193-223.
• Rogers, Y. and Scaife, M. (1997)
• Zhang, J. & Norman, D.A. (1994) "Representations in Distributed Cognitive Tasks", Cognitive Science, 18, 87-122.
• Salomon, Gavriel. (1993) Distributed cognitions: Psychological and educational considerations. (ISBN 0-521-57423-4) (Cambridge University Press).

• Activity theory
• Computer Supported Collaborative Learning
• Situated cognition
• Hive mind

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