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Video and Web-based tutorials created by libraries from 71 public universities designated by the Carnegie Classification as having the Highest Research Activity (R1) were reviewed for accessibility and usability by disabled people. The results of this review indicate that a large portion of library tutorial content meets neither the minimum legal standards nor rises to the level of functional usability. Some positive trends are noted, along with recommendations for overall improvement.
Clossen et al. (Sun,) studied this question.