Which prototyping method allows for testing of broad concepts and mental models?

Low-fidelity prototypes are particularly effective for testing broad concepts and mental models because they focus on the overall structure and layout of designs without getting bogged down in the finer details of visual aesthetics or functionality. These prototypes can be as simple as sketches or paper models, allowing designers to convey ideas quickly and gather feedback early in the design process. This approach fosters discussions about core concepts and user experiences, enabling stakeholders to evaluate fundamental ideas before investing in more complex designs.

By using low-fidelity prototypes, designers can explore a wide range of concepts, iteratively refine their ideas, and validate assumptions about user behavior and needs early on, ensuring that they are on the right track before committing to more detailed and resource-intensive development. The flexibility of low-fidelity formats makes them ideal for exploring and communicating the high-level vision of a project.