- PhD, Univ of Pittsburgh, 1989
- MA, Univ of Pittsburgh, 1982
- BS, Univ of Pittsburgh, 1978
David J. Zajac, Ph.D., is Associate Professor in the Craniofacial Center, School of Dentistry and the Division of Speech and Hearing Sciences. A graduate of the University of Pittsburgh, Dr. Zajac is both a clinical speech-language pathologist and a speech scientist. His research focus is on speech and respiratory aerodynamics in cleft palate. Dr. Zajac is the Principal Investigator of two NIH-sponsored grants and an Associate Editor for JSLHR. He has published over 30 research articles and/or book chapters.
- SPHS 749 Craniofacial Anomalies
- DENT 486 Craniofacial Anomalies
- Developmental Aspects of Speech Production
- Speech Aerodynamics and Acoustics
- Cleft Palate Speech
- Assessment of Cleft Palate Surgery
Zajac, D., & Weissler, M. (2004). Air pressure responses to sudden vocal tract pressure bleeds during production of stop consonants: New evidence of aeromechanical regulation. Journal of Speech, Language, and Hearing Research, 47:784-801.
Gross, R., Steinhauer, K., Zajac, D., & Weissler, M. (2006). Direct measurement of subglottic air pressure while swallowing. The Laryngoscope, 116(5):753-761.
Bundy, E., & Zajac D.(in press). Estimation of transpalatal nasalance during production of voiced stop consonants by non-cleft speakers using an oral-nasal mask. Cleft Palate-Craniofacial Journal.
Zajac, D., Roberts, J., Hennon, E., Harris, A., Barnes, E., & Misenheimer, J. ( in press). Articulation rate and vowel space characteristics of young males with fragile X syndrome: Preliminary acoustic findings. Journal of Speech, Language, and Hearing Research.