The concept of 'cognitive load' refers to the total amount of mental effort being used in the working memory. In educational psychology, it is often discussed in relation to instructional design, as high cognitive load can impede learning. Researchers distinguish between intrinsic load, which is inherent to the complexity of the material, and extraneous load, which is generated by the way information is presented. Effective teaching strategies aim to minimize extraneous load while managing intrinsic load appropriately. For instance, integrating diagrams with text can reduce extraneous load by helping learners process information more efficiently. However, studies show that presenting redundant information across multiple modalities may actually increase cognitive load, contrary to popular belief. Thus, understanding the nuanced effects of instructional formats is crucial for optimizing learning outcomes.