Abstract
Usability testing can evaluate product performance and improve the usability of new product prototype. However, various types of products need different usability testing methods during development process. According to the product attribute, this dissertation integrates usability testing methods that incorporate the objective and subjective metrics to evaluate new product prototypes comprehensively before launching to the market. Three new product prototypes are utilized to verify these usability testing methods at product design stage. Firstly, usability testing experiment is conducted to improve the performance of new DAISY plyer prototype. Results and findings have allowed us to generate suggestions for developing the next generation DAISY players for impaired people, especially for Chinese audience. In addition, this dissertation presents a new learning approach based on the DAISY e-textbooks, and conducts usability testing to evaluate the learning effects. Results show that the new approach effectively improved visually impaired students’ mathematics proficiency. Finally, this dissertation integrates and applies usability metrics to evaluate a health management product prototype. Based the results, usability of a new product prototypes are improved before it entered the market. Academically, this dissertation integrates the objective and subjective metrics as usability testing methods. Practically, this dissertation is actually benefiting a new product prototype to be more comfortable and suitable for use.