Which usability evaluation method utilizes established principles to assess an interface?

Heuristic evaluation is a method that involves assessing a user interface based on a set of established usability principles, known as heuristics. It typically includes evaluating the interface against recognized guidelines, such as those proposed by Jakob Nielsen. This approach allows evaluators, often usability experts, to identify potential usability issues by inspecting the interface independently and using their knowledge of usability best practices.

The emphasis on established principles makes heuristic evaluation particularly effective for identifying problems that users may encounter when interacting with an interface. This method is structured, systematic, and can be performed relatively quickly without needing extensive user testing.

Other methods mentioned, such as formative usability testing, exploratory testing, and comparative evaluation, each have their unique focuses. Formative usability testing involves gathering user feedback while the design is still being developed. Exploratory testing typically refers to ad-hoc testing without a predefined test script, allowing testers to explore the product's functionalities. Comparative evaluation assesses one design against another or multiple designs, rather than focusing solely on established heuristics.