Final answer:
Usability Testing aims to assess how easily users can operate, prepare inputs for, and understand outputs from a system, which helps in refining the design to improve its usefulness and usability.
Step-by-step explanation:
The purpose of Usability Testing is to evaluate the extent to which a user can learn to operate, prepare inputs for, and interpret outputs of a system. This involves testing and evaluating whether a prototype or system meets the designed constraints and performs as per the established criteria through careful planning and resource management.
Through this process, the usability of a product is assessed, highlighting areas that are user-friendly and those that may need improvement. Testing and evaluation may indicate areas where the design is weak or could be enhanced, and sometimes may even lead to the discovery that an alternative design is necessary. The goal is to refine the design to better meet the criteria and ensure its usefulness and usability.