Đề thi VSTEP Reading B2 — Sleep & Learning (mẫu 5)

For decades, researchers believed that sleep was simply a passive state in which the brain rested. However, modern neuroscience has revealed that sleep plays an active and indispensable role in learning and memory consolidation. Studies conducted at leading universities have demonstrated that different stages of sleep contribute to different types of memory. During slow-wave sleep, which typically occurs in the first half of the night, the brain replays and reorganizes declarative memories—those involving facts and events. In contrast, REM sleep, which becomes longer toward morning, appears to strengthen procedural memories, such as riding a bicycle or playing a musical instrument. A 2019 study found that students who pulled all-nighters before an exam performed 40% worse than those who slept a full eight hours. The sleep-deprived group also reported higher levels of anxiety, suggesting that sleep deprivation affects not only cognition but also emotional regulation. These findings challenge the common assumption that learning ends when a textbook closes. In reality, the brain continues to process and integrate new information long after students leave the classroom, making adequate sleep a non-negotiable component of academic success.