Table 1.

Definition used for Task interruption, Task switching, and Concurrent multitasking.²³

	Definition
Task interruption	Task interruption if defined by a break in performance, provisional or definitive, of human activity. The source of the task interruption is internal or external to the recipient. The task interruption causes a break in the workflow, a disturbance of the concentration of the operator, and an alteration of the performance of the act. The possible realization of secondary activities completes to thwart the smooth running of the initial activity.
Concurrent multitasking	Concurrent multitasking (or dual-task interference, dual-tasking, dual-task performance) is the performance of two or more actions simultaneously.
Task switching	Task switching is the management of multiple tasks in which there is switching between tasks that are progressing in parallel.