Saturday, May 12, 2012

Testing Web Sites: Five Users Is Nowhere Near Enough

by Jared Spool, Will Schroeder

Tested four shopping sites with open ended tasks (buy some stuff you want) and found that they didn't uncover 85% of problems until they had tested 18 users. Five users only found 35% of problems.

Attribute this to how complex websites are, claiming 18 is the new five.

I say the scope of the task list has to be tighter.

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