We could have used any of a vast array of qualitative methodologies, but, for this project, we chose four types of qualitative methods to structure our testing. They included focus groups, preference testing, pretest, and diagnostic usability testing. Focus groups and preference testing took place in earlier testing rounds, while the diagnostic usability testing occurred later. We also conducted a pretest before the diagnostic usability testing to validate the methodology and to test the notices before moving on. The table below is a generic overview of the kind of information, the strengths, and the weaknesses for each of these four.
