University of North Texas 
UNT Cleft Palate Speech Lab
Welcome to the Cleft Palate Speech Research Lab (CPSL)
Lab Mission
The mission of CPSL at UNT is to advance the understanding of speech production in
individuals with cleft palate and other craniofacial anomalies. This includes investigating
intelligibility deficits, examining tongue posture variations, and exploring the effects
of nasality on tongue shape and position in individuals with cleft palate and other
craniofacial differences.
Principal Investigator (PI): Hedieh Hashemi Hosseinabad, Ph.D., CCC-SLP
Dr. Hashemi Hosseinabad, Ph.D., CCC-SLP is an assistant professor in the Department of Audiology and Speech-Language Pathology and the Director of the CPSL at the University of North Texas.
Contact Us
CPSL Research Lab
Dr. Hashemi Hosseinabad
Hedieh.HashemiHosseinabad@unt.edu
UNT Speech & Hearing Center, Room 239
907 W. Sycamore St.
Denton, TX 76201