cognitive load

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the load related to the executive control of working memory; the total amount of mental activity imposed on working memory in any one instant. Complex activities, like driving, are based on interacting elements that must be processed simultaneously. A large cognitive load (e.g. as occurs when trying to multi-task while driving, or during challenging driving circumstances) can temporarily overload the driver's working memory, and limit their ability to process information and arrive at correct decisions and prompt actions.

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cognitive load