Erika Hall

If you’re about to start redesigning something, usability-testing the current version can provide some input into what works and what doesn’t work about the current version.

Usability testing can:

Uncover significant problems with labeling, structure, mental model, and flow

Let you know whether the interface language works for your audience.
Reveal how users think about the problems you purport to solve with your design.
Demonstrate to stakeholders whether the approved approach is likely to meet stated goals.