Recent studies in cognitive neuroscience have revealed that the human brain's capacity for multitasking is severely limited, contrary to popular belief. When individuals attempt to perform two tasks simultaneously, such as reading while listening to music with lyrics, the prefrontal cortex must rapidly switch attention between the two activities. This switching process incurs a 'cognitive cost,' leading to reduced efficiency and increased error rates. Furthermore, research indicates that heavy media multitaskers perform worse on tests of task-switching ability compared to light multitaskers, suggesting that frequent multitasking may impair executive control functions. These findings challenge the assumption that modern technology enhances productivity by enabling parallel processing, instead suggesting that focused, sequential attention is more conducive to deep learning and complex problem-solving. Consequently, educators and policymakers are urged to reconsider the integration of digital devices in academic settings, promoting environments that minimize distractions and encourage sustained concentration.
❓ Các nghiên cứu được đề cập trong đoạn văn có phát hiện chính là gì?
A. Đa nhiệm cải thiện hiệu quả nhận thức ở hầu hết mọi người.
B. Não bộ có thể xử lý hiệu quả nhiều nhiệm vụ cùng lúc mà không bị suy giảm hiệu suất.
C. Đa nhiệm dẫn đến giảm hiệu quả công việc và có thể làm suy yếu khả năng kiểm soát điều hành.
D. Công nghệ nâng cao năng suất thông qua xử lý song song.
✅ 正确答案
Multitasking leads to reduced efficiency and may impair executive control.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Be wary of absolute statements (all, always, never) — usually wrong
Pay attention to content after transition words (however, but, yet)
Manage time: about 20 minutes per passage; skip difficult questions first