Recent studies in cognitive psychology have challenged the traditional view that multitasking enhances productivity. Researchers argue 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 because mental resources remain partially engaged with the previous task. Furthermore, experiments indicate that even brief interruptions can increase error rates and extend completion time, particularly for tasks requiring deep concentration. Consequently, experts advocate for 'single-tasking' in high-stakes environments, suggesting that sequential focus yields higher quality outcomes than parallel processing.
❓ 本文によると、マルチタスクが生産性を低下させる主な理由は何ですか?
A. A) 脳は、いかなる瞬間においても、一度に複数のタスクを処理することはできません。
B. B) 注意を切り替えると、精神的な残渣が残り、現在のパフォーマンスを妨げる。
C. C) 中断は常に予想よりも長く続く。
D. D) 高いリスクを伴う環境では、シングルタスクが求められる。
✅ 正确答案
B) Switching attention leaves mental residue that interferes with current performance.
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