Thank you for the reply. I am looking for any studies focused on providing usable solution that is fully 508 compliant. I have been running into issues where new technology offers great usability issues to be addressed and make it easy, fun and delight to work with but lot of those implementations are failing 508 compliance/WCAG-AA/AAA levels.
I hope this is helpful in explaining what I have been looking for.
Thanks & Regards,