Usability testing is a user experience research method used to measure how easy or difficult it is for users to interact with a system. This can be done through direct observation, video recordings, or surveys. Usability testing is often used in conjunction with other user experience research methods, such as focus groups, user interviews, and heuristic evaluations.

Usability testing is most effective when used early and often in the design process. This allows designers to quickly identify and fix usability issues before they become expensive problems. Usability testing can also be used to compare different design options, or to evaluate the effectiveness of a redesign.

When used in conjunction with other user experience research methods, usability testing can provide a more complete picture of the user experience. For example, focus groups can be used to generate ideas for usability tests, and user interviews can be used to understand why users are having difficulty with a particular task. Heuristic evaluations can be used to identify potential usability issues, and surveys can be used to measure user satisfaction.

Usability testing is an essential part of the user experience design process. When used in conjunction with other user experience research methods, it can help designers create more user-friendly designs.