Which methodology emphasizes refining a design based on user testing results?

The methodology that emphasizes refining a design based on user testing results is iterative design. This approach focuses on a cyclic process where prototypes are created, tested, evaluated, and refined based on the feedback from users. In iterative design, each version of the design is seen as a step towards improving the overall usability and effectiveness of the product. This process allows designers to learn from real user interactions and continuously make adjustments to enhance the experience.

Iterative design ensures that the design evolves through constant user feedback, which is crucial for developing products that meet the needs of users effectively. By engaging in this cyclical refinement process, designers can adapt to user preferences, identify pain points, and implement necessary changes much more efficiently than in a linear design approach. This methodology ultimately leads to a more user-friendly final product that has been rigorously tested and improved based on real user experiences.