雅思阅读

📖 Reading Passage

The concept of 'cognitive load' refers to the amount of mental effort being used in the working memory. In educational settings, cognitive load theory suggests that instructional design should minimize extraneous load to facilitate learning. Extraneous load is generated by the way information is presented, not by the inherent complexity of the material. For instance, a poorly designed diagram can force learners to split their attention between multiple sources of information, increasing unnecessary mental effort. In contrast, intrinsic load is tied to the difficulty of the subject matter itself, which cannot be reduced but can be managed through scaffolding. Germane load, the third type, involves the mental resources devoted to processing and integrating new information into long-term memory. Effective teaching strategies aim to optimize the total cognitive load by reducing extraneous elements, while encouraging germane processing. Recent studies have demonstrated that multimedia presentations, when carefully structured, can lower extraneous load and enhance comprehension, especially for novice learners who have limited prior knowledge to rely on.