Editing Cognitive tutor (section)

=== Cognitive architecture ===

Cognitive tutor development is guided by [[ACT-R]] [[cognitive architecture]], which specifies the underlying framework developing the cognitive model or expert component of a cognitive tutor.

[[ACT-R]], a member of the [[Adaptive Control of Thought|ACT]] family, is the most recent cognitive architecture, devoted primarily to modelling human behavior. ACT-R includes a [[declarative memory]] of factual knowledge and a [[procedural memory]] of production rules. The architecture functions by matching productions on perceptions and facts, mediated by the real-valued activation levels of objects, and executing them to affect the environment or alter declarative memory. ACT-R has been used to model psychological aspects such as memory, attention, reasoning, problem solving, and language processing.<ref>P. Langley and J. E. Laird, "Cognitive Architectures: Research Issues and Challenges". Draft of October 31, 2002.</ref>