Recent studies in cognitive neuroscience have revealed that the human brain's capacity for multitasking is far more limited than previously assumed. Contrary to popular belief, engaging in multiple tasks simultaneously does not enhance productivity but rather leads to a significant decline in overall efficiency. This phenomenon, known as 'task-switching cost,' arises because the brain must constantly reorient its attention and working memory when shifting between activities. Neuroimaging data indicate that the prefrontal cortex, which is responsible for executive control, becomes heavily taxed during such switches, resulting in slower response times and increased error rates. Furthermore, research suggests that chronic multitasking may impair long-term cognitive functions, such as sustained attention and deep information processing, potentially affecting academic and professional performance.
❓ 지문에 따르면, 멀티태스킹의 주요 결과는 무엇인가?
A. 뇌 자원을 더 잘 활용함으로써 전반적인 효율성을 향상시킵니다.
B. 뇌가 주의를 전환해야 하기 때문에 성능이 저하됩니다.
C. 장기적으로 인지 기능에 아무런 영향을 미치지 않습니다.
D. 시간에만 영향을 미치며, 오류율에는 영향을 미치지 않습니다.
✅ 正确答案
It reduces performance due to the brain's need to switch attention.
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