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 psychology, cognitive load theory suggests that learning is most effective when instructional materials are designed to reduce extraneous cognitive load, thereby freeing resources for the intrinsic load necessary for understanding complex material. This theory has significant implications for multimedia learning, where the presentation of information through both auditory and visual channels can either enhance or impede comprehension. For instance, when a diagram is accompanied by redundant on-screen text, learners may experience split attention, increasing extraneous load. Conversely, integrating labels directly onto the diagram can reduce this burden. However, experts argue that the optimal level of cognitive load varies with the learner's prior knowledge, making a one-size-fits-all approach inadequate.