雅思阅读

📖 Reading Passage

The concept of cognitive load, introduced by John Sweller in the 1980s, has become a cornerstone of instructional design. Cognitive load theory posits that working memory has a limited capacity, and learning is hindered when this capacity is exceeded. Sweller distinguished between intrinsic load, which is inherent to the complexity of the material, and extraneous load, which is imposed by the manner in which information is presented. Effective instructional materials aim to minimize extraneous load while managing intrinsic load through techniques such as segmenting complex tasks and using worked examples. Recent research has extended this framework to multimedia learning, suggesting that the integration of visual and auditory information can reduce cognitive load if designed coherently, but may increase it if redundant or conflicting. Thus, understanding cognitive load is crucial for educators seeking to optimize learning outcomes in increasingly digital environments.