44. Sustained attention lasts about ten minutes

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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.

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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.