“…In HCI and HFE, the cost of an interruption on-screen has been evaluated with quantitative metrics such as time on task [1,33,37,40], the number of tasks completed [40], the number of incomplete tasks [23], the number of errors [35,40], switching time [30,33,43], and workload [1,37]; and qualitative metrics such as respect [1] and preference [40]. In embodied settings, researchers have also used structured interviews [24,55,57] and ethnographies [18,24,45,55] to evaluate long-term interruption costs.…”