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cognitive work analysis
An approach to analyzing human work that focuses on how effective courses of action are constrained by both ecological and cognitive considerations.
This states the pertinent values of cognitive dimensions that are required to support a given type of activity, and thereby provides a means to evaluate an information artifact.
Maintains a Cartesian dualism, attributing human conduct to the operation of mental predicates. Often associated with a computational theory of mind, it is a predominate paradigm within human-computer interaction (HCI).
a structured set of expressions that a computer interprets as requests for information and services
Some piece of knowledge is common ground if all the people conversing know it and they all know that the others know it, too. (See the text for a more formal and comprehensive definition.)
The study of how much time or resources are required to compute things. The complexity of an algorithm or problem is typically measured relative to the size of the problem, n, and expressed in order notation. For example, a time complexity of O(n2) means that the time it takes to perform the calculation increases with the square of the problem size.
Two representations that, in addition to being informationally equivilent, make the same information equally readily accessible. See also informational equivalence.
computational metaphor (of cognition)
Hutchins (1995a, 117) defines a “computation” as referring to “the propagation of representational state across representational media.” The computational metaphor is the position taken that cognition is a form of computation, and that mental state is encoded analogously to computer representations. The term “metaphor.” Within cognitive science, the computational metaphor is also known as the “representational theory of mind,” in which computations are actions on representations. DCog claims that the computational metaphor can be applied to a unit of analysis broader than an individual’s mind (i.e., the functional system).
computer-supported cooperative work (CSCW)
The design of systems to support interaction and cooperative working. It emerged in the late 1980s as a result of dissatisfactions with the predominantly cognitivist paradigm employed in human-computer interaction (HCI) and in recognition of the importance of questions regarding organizations, work, and interaction for the design of computer systems.