1  2  3  4  5  6  7  8  9 10   Number of websites

This is the number of different websites that need to be tested. If you wanted to run tests on French and German sites, we would class this as 2 websites because we would expect 2 sets of results; one for the French and one for the German website.

max. of 8 people in 1 day   max. of 16 people over 2 days   max. of 24 people over 3 days   max. of 32 people over 4 days   max. of 40 people over 5 days   max. of 48 people over 6 days   max. of 56 people over 7 days   max. of 64 people over 8 days   max. of 72 people over 9 days   max. of 80 people over 10 days   tested per website

We would expect to run usability tests with between 5 and 8 users in one day. The complexity of each test ultimately dictates this.

no eye tracking analysis with eye tracking analysis     

Usability testing with eye tracking involves the use of specialist equipment and increases the amount of analysis needed to interpret the data. Read about the benefits of eyetracking here.