This is interesting Bob. If I was reading that report I would think that the findings regarding Habituation and Dual-Adaptation need a lot of work. What I always fear with this technology is that prolonged exposure to AR & VR having a negative effect on the User...

This Study was for Combat Medics, one of the MOSs slated for IVAS. Two AR Displays and an Tablet were tested. Not hard to guess which two types of displays were A-Bed. They did not attribute any of the results to any one in particular. If the display I'm thinking of made Cyber-Sickness the least of the challenges that's a good thing. Makes we wonder what other reports show across the Touch-Points. In Combat nobody is going to be there reminding you every hour or so to take a break so you can adapt to the "Real World". Maybe that's where the Bio-Metrics come in that they want to design into the System. But still you can't call a Time-Out. I wonder what the jury will think if these results are determinative. 

These issues as far as I know have not come up with ENVG-B. Running, Mission Rehearsal Training, Navigation, Position, Timing difficulties never came up at Fort Drum on the overnight hike, in the caves etc. I don't know why Medics would be of particular interest to the Testers. Oh well, we'll see.

https://www.mtec-sc.org/assessment-of-psychological-and-physiological-effects-of-augmented-reality/