
Penn State University, University Park, PA, United States of America
ASHA Financial Disclosures:
This research was supported, in part, through grant #90REGE0014 to the Rehabilitation Engineering Research Center on Augmentative and Alternative Communication (The RERC on AAC) from the National Institute on Disability, Independent Living, and Rehabilitation Research (NIDILRR).
ASHA Non-Financial Disclosures:
None