'Difficulties in developing an understanding of a subject or a concept appear to be “heavily determined by working memory load,” writes #JohnSweller, and the more complex the material we’re trying to learn, the greater the penalty exacted by an overloaded mind..many possible sources of cognitive overload, but two of the most important..are “extraneous problem-solving” and “ #DividedAttention.” ' #KeyPerson #KeyThought to remember from #TheShallows, #InstructionalDesign in #TechnicalAreas