This week I was trying to decide which type of testing would be appropriate on Chipotle’s website. I started with error rate but decided after I tried to order a burrito I found frustration but not many errors. I was at a loss of what to write. I tried out number of clicks next but after I started researching how useful number of clicks is in a usability test I decided against it since there seemed to be opposition against it and I could not make a good case for it. See: http://www.uxbooth.com/articles/stop-counting-clicks/
I settled on testing task time. There is a lot that can be done with the results of testing task time of users, especially to reveal where usability issues lie within the site. I found a few encouraging articles about using this in usability tests and ways to present findings. This was a large factor in my choice of measurement but I don;t think basing my choice off of research is ever a bad thing… isn’t that what research is for after all?
See: http://www.measuringu.com/blog/task-times.php and https://uxmag.com/articles/evaluating-ux-by-measuring-task-efficiency for more information