When information is dense, complex, and ambiguous, information overload occurs, compromising people’s ability to assimilate information effectively.

Eppler, Martin J., and Jeanne Mengis. “The Concept of Information Overload: A Review of Literature from Organization Science, Accounting, Marketing, MIS, and Related Disciplines.” The Information Society 20.5 (2004): 325–344. Crossref. Web.

“Vision trumps all other senses”

Medina, John. Brain Rules: 12 Principles for Surviving and Thriving at Work, Home and School. Pear Press, 2014

Learners build meaningful connections between words and pictures, thus learning more deeply than with words or pictures alone.

Mayer, R. E. (2009). Multimedia learning (2nd ed). New York: Cambridge University Press