Recent studies in cognitive psychology have challenged the traditional view that multitasking enhances productivity. Researchers such as Ophir and colleagues (2009) found that individuals who frequently engage in multiple media streams simultaneously perform worse on tasks requiring focused attention and memory retention. This phenomenon, termed 'media multitasking,' appears to impair the brain's ability to filter irrelevant information, leading to increased cognitive load and reduced efficiency. Furthermore, neural imaging studies suggest that chronic multitaskers exhibit altered activity in the prefrontal cortex, a region associated with executive control. While some argue that multitasking is a necessary skill in modern workplaces, empirical evidence indicates that task-switching incurs a 'switching cost,' resulting in slower performance and more errors. Consequently, experts recommend 'single-tasking' as a more effective strategy for complex problem-solving, advocating for structured intervals of deep work without digital interruptions.
❓ この文章で言及されている研究の主な発見は何ですか?
A. A) マルチタスクは、ほとんどの職場環境において生産性を向上させる。
B. B) 頻繁なメディア・マルチタスキングは、注意力と記憶力のパフォーマンス低下と関連している。
C. C) 前頭前皮質は慢性的なマルチタスクの影響を受けない。
D. D) タスク切り替えは、速度や正確さに測定可能な影響を及ぼさない。
✅ 正确答案
B) Frequent media multitasking is linked to poorer attention and memory performance.
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