44. Sustained attention lasts about ten minutes

SUSTAINED ATTENTION LASTS ABOUT TEN MINUTES

-Assume that you have at most 7-10 minutes of a person's attention. -If you must hold attention longer than 7-10 minutes, introduce novel information or a break. -Keep online demos or tutorials under 7 minutes in length.

for example: Lynda.com tutorials are usually pretty good about being under 10 minutes which makes them better to watch and easier to retain the information you're being given.