The six types of usability testing are:
Qualitative or quantitative testing: Qualitative testing involves gathering subjective feedback from users about their thoughts and feelings, while quantitative testing gathers numerical data to analyze user behavior
Moderated and unmoderated testing: Moderated testing involves a facilitator being present while the user completes usability tasks. Unmoderated testing involves users completing tasks independently
Remote or in-person testing: Remote testing involves users completing tasks from the comfort of their own homes or workplace, while in-person testing involves users completing tasks at a centralized research location