雅思阅读

📖 Reading Passage

The concept of 'cognitive load' refers to the total amount of mental effort being used in the working memory. In educational settings, instructional designers often aim to manage cognitive load to optimize learning. According to Sweller's cognitive load theory, learning is hindered when the intrinsic load (complexity of the material) and extraneous load (manner of presentation) exceed the learner's available working memory capacity. However, recent studies suggest that a certain level of desirable difficulty, such as interleaving practice or introducing occasional distractions, can enhance long-term retention by promoting deeper processing. This paradox implies that not all cognitive load is detrimental; rather, the type and timing of load matter significantly. For instance, while a poorly designed lecture may overwhelm novices, the same content presented with spaced retrieval exercises can facilitate schema construction and automation, leading to more robust learning outcomes.