![]() ![]() Work performance decreased in the resumption trials, and cumulative interruptions had a more destructive effect on performance. The measured outcomes comprise performance data, ERP amplitudes, EEG power, and subjective workload. Thirty-four healthy participants performed a spatial 2-back in three conditions: (1) interruptions with simple math questions, (2) suspensions with prolonged fixation cross, and (3) a pure 2-back. However, most studies pay little attention to cognitive processes by exploring brain activity and ignore the cumulative effect of sequential interruptions. Task interruption is known to harm work performance, especially on working memory-related tasks. This study used electroencephalography to explore the behavioral and electrophysiological effects of task interruption on performance. We recommend personalized and closed-loop computer-usage behaviour change support and especially encouraging off-the-computer screentime breaks. Third, away-from-computer breaks, especially involving physical activity, are helpful, whereas on-screen breaks are unhelpful, especially when they are long, because they are not refreshing. Second, site blockers, self-trackers, and timers are commonly used, but they are ineffective as they are easy-to-ignore and not personalized. First, time management is a primary concern, but emotional and physical side-effects are equally important. RQ1: What do people want to change and why/how? RQ2: What applications do people use or have used, why do they work or not, and what additional support is desired? RQ3: What are helpful/unhelpful computer breaks and why? Our survey had 68 participants and three key findings. We develop guidelines for the design of behaviour intervention software by conducting a survey to investigate three research questions and further inform the mechanisms of computer-related behaviour change applications. Although many software based interventions exist to reduce screentime, users report a variety of issues relating to the timing of the intervention, the strictness of the tool, and its ability to encourage organic, long-term habit formation. Technology based screentime, the time an individual spends engaging with their computer or cell phone, has increased exponentially over the past decade, but perhaps most alarmingly amidst the COVID-19 pandemic. The findings are explained by the increasing information cues needed to resume complex tasks and the negative effect of fatigue on memory activation. Mental fatigue negatively affects primary task performance, workload, and the resumption lag after an interruption. The findings show that more time is required to return to a complex primary task, and there are differences among subtask types. The results revealed the significant interaction effects of interruption × task complexity and of interruption × fatigue state. Thirty-four participants performed the MATB-Ⅱ under eight conditions (two-level task interruption, two-level task complexity, two-level fatigue). This study examines the effects of task attributes and mental fatigue on interrupted task performance in a concurrent multitasking environment. ![]() Emerging technologies may lead to more task interruptions. In a concurrent multitasking environment, performing many types of tasks increases task complexity, and working long hours makes a person susceptible to mental fatigue.
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