attention

source: Juster, Norton. (1961). The Phantom Tollbooth. Illustrated by Jules Feiffer. Epstein & Carroll; distributed by Random House. Chapter 9, “It’s All in How You Look at Things”.

via: reading with Indigo, from the chapter books shelf of readingstori.es.

source: Nielsen, J. (1993). Usability Engineering. Academic Press. Chapter 5 excerpt published as “Response Times: The 3 Important Limits.” Nielsen Norman Group. NN/g later issued a four-minute video of the same material as “The 3 Response Time Limits in Interaction Design.”