Multimedia designers in educational or training settings need to think about the most effective way to deliver content and increase retention. Cognitive Load Theory posits that humans have a finite capacity for assimilating information. Extraneous processing is the amount of “brain power” users must to devote to non essential processing – leaving less brain power for learning. In other words, if you overload the auditory and visual channels your learners might not retain the information you want them to. Here’s a quick video on how to reduce cognitive load in your learners.