What prototyping technique involves creating rough drawings of an interface for user testing?

The selected prototyping technique is effective because it emphasizes the creation of low-cost, quickly-made representations of an interface that can be easily modified based on user feedback. Paper prototypes are typically created using simple materials like paper or cardboard, allowing designers to sketch out various layouts and interactions in a tangible form. This method allows for rapid iteration, enabling designers to gain insights into user behavior and preferences early in the design process without the need for advanced tools or technical skills.

By presenting these rough drawings to users, designers can observe their interactions and gather qualitative feedback, making it an invaluable step in refining the user experience. Paper prototypes facilitate direct communication of concepts and ideas, making it easier to identify usability issues and iterate on design choices before investing in more complex and costly prototypes. This approach is particularly helpful in the early stages of design, where the intention is to explore ideas and quickly assess their viability.

The other options involve varying levels of fidelity and technology, which may not offer the same ease of modification and cost-effectiveness as paper prototyping at the initial testing stages.