Using Optical Head-Mounted Displays for instant, contextualized feedback.

Optical Head-Mounted Displays (OHMDs), such as Google Glass, have substantial potential in learning situations where contextualized, instantaneous feedback is beneficial. We present a study of a Google Glass based application that allows instructors to give feedback to students while they are doing an inclass presentation. We examined students' perception of the usability of the system, the usefulness of the feedback, as well as its impact on students' self-efficacy. We found that students responded very positively to the feedback, reported no major usability issues, and overall agreed that their self-efficacy increased. The positive responses to this study support further research into the learning affordances of OHMDs to deliver contextualized, instant feedback.