Usability of Audio Matrix Microtasks for Screen Reader Users

Crowdsourcing provides people with new work opportunities; it involves the concept of microtasks. Microtasks have been proven to be a promising work option for visually impaired people. Unfortunately, most real-world microtasks are designed for sighted people. The few studies on designing microtasks for visually impaired people focus only on transcription tasks; however, there can be additional types of microtasks that visually impaired people can perform using screen readers. Therefore, this study focuses on developing better microtask designs for visually impaired people. We focus on audio matrix tasks in which audio clips are placed in a tabular format. This study explains our approach, provides theoretical background for improving consistency in a given task, and presents the results of experiments conducted with visually impaired people. The results show better result quality and lower working time for visual impaired workers when performing the tasks.