Accessibility assessments typically focus on determining a binary measurement of task performance success/failure; and often neglect to acknowledge the nuances of those interactions. Although a large population of blind people find smartphone interactions possible, many experiences take a significant toll and can have a lasting negative impact on the individual and their willingness to step out of technological comfort zones. There is a need to assist and support individuals with the adoption and learning process of new tasks to mitigate these negative experiences. We contribute with a human-powered nonvisual task assistant for smartphones to provide pervasive assistance. We argue, in addition to success, one must carefully consider promoting and evaluating factors such as self-efficacy and the belief in one's own abilities to control and learn to use technology. In this paper, we show effective assistant positively affects self-efficacy when performing new tasks with smartphones, affects perceptions of accessibility and enables systemic task-based learning.
翻译:无障碍评估通常侧重于确定任务业绩成功/失败的二进制衡量;往往忽视承认这些互动的细微差别。虽然大量盲人认为智能手机互动是可能的,但许多经验造成了重大伤亡,并可能对个人及其走出技术舒适区的意愿产生持久的负面影响。需要帮助和支持个人通过和学习新任务的过程来减轻这些负面经历。我们为智能手机提供了人力型非视觉任务助理,以提供无所不在的援助。我们主张,除了成功外,还必须认真考虑促进和评价诸如自我效能和对自身控制和学习使用技术的能力的信念等因素。在本文中,我们表明有效的助理在执行智能手机的新任务时积极影响自我效能,影响对无障碍的认知,并促成系统性的任务性学习。