Chapter #94. Reduce the Number of Tasks a User Has to Complete by Using Sensible Defaults
A big benefit of thinking through your default settings (see #92, Pick Good Defaults) is that a good set of defaults can radically reduce the number of tasks that a user has to perform.
Consider a shopping site where the user searches for "pyjamas for kids." The search results shown to the user have already selected a series of defaults in the left-hand filter panel:
Category: children's clothing
Age: 2 to 15
In stock
Without these intelligent defaults, the user would have to search for the relevant controls and configure them. It would only be a few extra clicks, but these tasks take time.
Through the use of user testing, A/B testing and analytics research, it should be possible to identify common user journeys and optimize the defaults for the vast majority of users.
These kinds of studies often yield results that follow the "80/20 rule" or Pareto principle (read more about the Pareto principle on Wikipedia...