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.
❓ Theo đoạn văn, hậu quả chính của việc đa nhiệm là gì?
A. Nó cải thiện hiệu quả tổng thể bằng cách sử dụng tài nguyên não bộ tốt hơn.
B. Nó làm giảm hiệu suất do não cần phải chuyển đổi sự tập trung.
C. Về lâu dài, điều này không có ảnh hưởng đến các chức năng nhận thức.
D. Nó chỉ ảnh hưởng đến thời gian phản hồi, không ảnh hưởng đến tỷ lệ lỗi.
✅ 正确答案
It reduces performance due to the brain's need to switch attention.
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