Recent studies in cognitive neuroscience have revealed that the human brain's capacity for multitasking is severely limited. When individuals attempt to perform two tasks simultaneously that require high-level cognitive processing, the brain's prefrontal cortex switches rapidly between them rather than processing them in parallel. This switching incurs a 'switch cost,' manifesting as reduced accuracy and increased reaction time. Moreover, chronic multitasking has been associated with decreased working memory performance and heightened susceptibility to distraction. These findings challenge the popular assumption that multitasking enhances productivity, suggesting instead that it may impair overall efficiency and learning outcomes.
❓ Каков основной вывод, сделанный на основе исследований, упомянутых в тексте?
A. Многозадачность повышает когнитивную эффективность, задействуя множество областей мозга.
B. Мозг способен одновременно обрабатывать множество сложных задач без значительных затрат.
C. Многозадачность может снижать продуктивность и ухудшать когнитивные функции из-за издержек переключения.
D. Хроническое многозадачность не оказывает измеримого влияния на память или внимание.
✅ 正确答案
Multitasking may reduce productivity and impair cognitive functions due to switching costs.
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