Recent studies in cognitive psychology have challenged the traditional view that multitasking enhances productivity. Researchers have found that the human brain is not designed to process multiple complex tasks simultaneously; instead, it rapidly switches attention between tasks, leading to a phenomenon known as 'attention residue.' This residue impairs performance on subsequent tasks because mental resources remain partially engaged with the previous activity. Furthermore, neuroimaging data reveal that heavy multitaskers show reduced activity in brain regions associated with sustained attention and working memory, compared to light multitaskers. These findings suggest that while multitasking may feel efficient, it often results in slower completion times and more errors, particularly for tasks requiring deep concentration.
❓ 根据文章内容，多任务处理效率低下的主要原因是什么？
A. A. 大脑无法同时处理多项任务，会留下干扰专注力的精神残留。
B. B. 多任务处理会降低所有大脑区域的活动，导致整体认知能力下降。
C. C. 重度多任务处理者的工作记忆容量低于轻度多任务处理者。
D. D. 当进行多任务处理时，需要深度专注的任务是不可能完成的。
✅ 正确答案
A. The brain cannot handle multiple tasks at once and leaves mental residue that disrupts focus.