NIH/NIA, Statistical Methods in Longitudinal Studies of Dementia, 5/26/99-4/30/05. Principal Investigator.

NIH/NIA, Selenium Levels and Cognitive Decline in Rural Elderly Chinese, 4/01/2003 – 3/31/2008, Principal Investigator.

NIH/NIA, The Dementias: Indianapolis-Ibadan Comparative Prevalence, 01/01/2001 – 12/31/2011.  (Hugh C. Hendrie, M.D., P.I.), Investigator.

NIA/PHS, Indiana Alzheimer’s Disease Center, 07/01/1996 - 06/30/2011.  (Bernardino Ghetti, M.D., P.I.), Director of Data Management and Statistics Core.

NIH, Comparison of Sensory Aids in Deaf Children, 01/01/00-03/31/11. (Richard T. Miyamoto, M. D., P.I.), Co-investigator.

NIH, Speech and Language in Children with Cochlear Implants, 04/01/03-03/31/06. (Richard T. Miyamoto, M. D, P.I.), Co-investigator.

NIH, Phonological systems of pediatric cochlear implant users. (Steve Chin, Ph.D, P.I.), Co-investigator.