User Testing

In Part I. of this article I was summarising importance of prototype validation that is often misinterpreted with prototype demonstration. Nothing can compare to directly observing users performing tasks and having chance to immediately follow up with additional questions.

It is always worth to remind what is the goal of each design artefact. Wireframes, mockups, prototypes — they help us to communicate ideas, explore variants or define engineering specifications. But the primary goal is the same — we want to validate our assumptions.