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Communication Disorders

College of Health Sciences

Mary Hardin-Jones, Ph.D., CCC-SLP

Photo showing Dr. Mary Hardin-Jones.Professor and ASHA Fellow
Craniofacial Disorders & Child Phonology

Ph.D., University of Iowa, 1984
M.S., Texas Tech University, 1979
B.A.,Texas Tech University, 1978 • (307) 766-5710 • Health Sciences, Room 255








Research Interests:
Main research interests: Factors that influence treatment outcome for children with cleft palate. In recent years, Dr. Hardin-Jones' research has examined the impact of cleft palate on early vocal development in toddlers. She is also interested in surgical management issues that influence speech outcome and has studied outcomes associated with both type and timing of palatal operations.

Craniofacial Disorders, Speech Disorders Across the Lifespan

Affiliations, Associations, Consultation:

American Speech-Language-Hearing Association
ASHA Special Interest Division 5: Speech Science and Orofacial Disorders
American Cleft Palate-Craniofacial Association
Wyoming Speech-Language-Hearing Association



Hardin-Jones, M.A., Scherer, N.J., and Chapman, K.L. (2015). A Parent’s Guide to Early Intervention for Toddlers with Cleft Palate.  Woodbine House.

Peterson-Falzone, S.J., Hardin-Jones, MA, and Karnell, M.P. (2010). Cleft Palate Speech, 4th Edition. St. Louis: Elsevier.   (3rd edition published in 2001)

Peterson-Falzone, S.J., Trost-Cardamone J.E., Karnell, M.P., and Hardin-Jones, M.A. (2017).  The Clinician's Guide to Treating Cleft Palate Speech. St Louis: Mosby. (1st edition published in 2006)


Hardin-Jones, M.A. and Chapman K.L., (in press) Early intervention for infants and young children with cleft palate.  In Harding-Bell A (Ed), Case Studies in Cleft Palate Speech: Data Analysis and Principiled Intervention. Surrey, UK: J & R Press.

Chapman K.L. and Hardin-Jones M.  (2009).  Consideration of individual differences in speech development, outcome, and management:  Children with Cleft Palate.  In Weiss A (Ed), Perspectives on Individual Differences Affecting Therapeutic Change in Communication Disorders.  London:  Psychology Press. 

Sadove, A.M., Eppley, B.L., Jones, D.L., and Hardin-Jones, M.A. (1997). Velopharyngeal insufficiency. In M.L. Bentz (ed.), Pediatric Plastic Surgery. East Norwalk: Appleton and Lange.

Chapman, K.L. and Hardin, M.A. (1990). Communication competence in children with cleft lip and palate. In Bardach, J. and Morris, H.L. (Eds.), Multidisciplinary management of cleft lip and palate. Philadelphia: W.B. Saunders.

Van Demark, D.R. and Hardin, M.A. (1990). Speech therapy for the child with cleft lip and palate. In Bardach, J. and Morris, H.L. (Eds.), Multidisciplinary management of cleft lip and palate. Philadelphia: W.B. Saunders .


Hardin-Jones, M.A. and Chapman, K.L. (in press). The implications of nasal substitution in the early phonolgy of toddlers with repaired cleft palate. Cleft Palate-Craniofacial Journal.

Hardin-Jones, M.A. and Chapman, K.L.  (2014). Early lexical development in toddlers with cleft palate. Cleft Palate-Craniofacial Journal, 51, 622-631.

Stout, G., Hardin-Jones,  M.A., and Chapman, K.L. (2011).  An analysis of the Frame-Content Theory in Babble of Nine-month-old babies with cleft palate.  Journal of Communication Disorders, 44, 584-594.

Hardin-Jones, M., Chapman, K. (2011).  Cognitive and language issues associated with cleft lip and palate.  In Communication Disorders Related to Cleft Palate, Craniofacial Anomalies, and Velopharyngeal Dysfunction.  Seminars in Speech and Language. 32; 2: 127-140.

Chapman, K.L., Hardin-Jones, M.A., Goldstein, J.A., Halter, K.A., Havlik, R.J., Schulte, J.  (2008). Timing of palatal surgery and speech outcome.  Cleft Palate-Craniofacial Journal, 45, 297-308.

Hardin-Jones M & Chapman KL (2008).  The impact of early intervention on speech and lexical development for toddlers with cleft palate:  A retrospective look at outcome.  Language, Speech and Hearing Services in Schools  39, 89-96.

Frederickson, M.S., Chapman, K.L., and Hardin-Jones, M. (2006). Conversational skills of children with cleft palate: A replication and extension. Cleft-Palate-Craniofacial Journal, 43,  179-188.

Hardin-Jones, M., Chapman, K., and Scherer, NJ. (2006).  Early intervention for children with cleft palate.  ASHA Leader, 11:8, 8 - 10.

Hardin-Jones M.A. and Jones D.L. (2005). Speech production patterns of preschoolers with cleft palate. Cleft-Palate-Craniofacial Journal, 42, 7-13.

Chapman K.L., Hardin-Jones M., Halter K.A. (2003). The relationship between early speech and later speech and language performance for children with cleft lip and palate. Clinical Linguistics & Phonetics., 17, 173-197.

Hardin-Jones M., Chapman K.L., and Schulte J.A. (2003). The impact of cleft type on early vocal development in babies with cleft palate. Cleft Palate-Craniofacial Journal, 40, 453-459.

Jones CE., Chapman K.L., and Hardin-Jones M.A. (2003). Speech development of children with cleft palate before and after palatal surgery. Cleft Palate-Craniofacial Journal, 40, 19-31.

Hardin-Jones M.A., Chapman K.L., Wright J., Halter K.A., Schulte J., Dean J., Havlik R.J., Goldstein J. (2002). The impact of early palatal obturation on consonant development in babies with unrepaired cleft palate. Cleft Palate-Craniofacial Journal, 39, 157-163. 

Chapman K.L., Hardin-Jones M.A., Schulte J., Halter K.A. (2001). Vocal development of 9 month old babies with cleft palate. J Speech Language Hearing Research, 44, 1268-1283.

Gooch, J., Hardin-Jones, M.A., Chapman K.C., Trost-Cardamone, J., and Sussman J (2001). Reliability of listener transcriptions of compensatory articulations. Cleft Palate-Craniofacial Journal, 38, 59-68.

Elfenbein, J.L., Hardin-Jones, M.A., and Davis, J.M. (1994). Oral communication skills of children who are hard of hearing. J Speech Hearing Research, 37, 216-225.

Van Demark, D.R., Hardin-Jones, M.A., O'Gara, M.M., Logemann, J., and Chapman, K.L. (1993). Identification of children with and without cleft palate from tape recorded samples of early vocalizations and speech. Cleft Palate-Craniofacial Journal, 30, 557-563.

Hardin-Jones, M.A., Brown, K., Van Demark, D.R., and Morris, H.L. (1993). Long-term speech results of cleft palate patients with primary palatoplasty. Cleft Palate-Craniofacial Journal, 30, 55-63.

Chapman, K.C. & Hardin-Jones, M.A. (1992). Phonetic and phonologic skills of children with cleft palate. Cleft Palate - Craniofacial Journal, 29, 435-443.

Hardin, M.A., Van Demark, D.R., Morris, H.L. Payne, M.M. (1992). Correspondence between nasalance scores and listener judgments of nasality. Cleft Palate-Craniofacial Journal, 29, 346-351.

Eliason, M.J., Hardin, M.A., and Olin, W.H. (1991). Factors that influence ratings of facial appearance for children with cleft lip and palate. Cleft Palate-Craniofacial Journal, 28, 190-193.

Hardin, M.A. (1991). Speech pathology perspectives II: Intervention. Clinics in Communication Disorders, 1(3), 12-18.

Chapman, K.L. and Hardin, M.A. (1991). Language input of mothers interacting with their young children with cleft palate children. Cleft Palate-Craniofacial Journal, 28, 78-85.

Van Demark, D.R., Hardin, M.A., and Morris, H.L. (1988). Assessment of velopharyngeal competence: A long-term process. Cleft Palate Journal, 25, 362-373.

Hardin, M.A., Morris, H.L., and Van Demark, D.R. (1986). A study of cleft palate speakers with marginal velopharyngeal competence. Journal of Communication Disorders, 19, 461-473.

Van Demark, D.R. and Hardin, M.A. (1986). Effectiveness of intensive articulation therapy for children with cleft palate. Cleft Palate Journal, 23, 215-224.

Van Demark, D.R. and Hardin, M.A. (1985). Longitudinal evaluation of articulation and velopharyngeal competence of patients with pharyngeal flaps. Cleft Palate Journal, 22,163-172.

Hulme, J.B., Bain, B.A., Hardin, M.A., McKinnon, A., Walton, D. (1989). The influence of adaptive seating devices on infant vocalization. Journal of Communication Disorders, 22, 137-145.

Hardin, M.A., Lachenbruch, P.A., and Morris, H.L. (1986). Contribution of selected variables to the prediction of speech proficiency for adolescents with cleft lip and palate. Cleft Palate Journal, 23, 10-23.

Hardin, M.A., Van Demark, D.R., and Morris, H.L. (1990). Long- term speech results of cleft palate speakers with marginal velopharyngeal competence. Journal of Communication Disorders, 23, 401-416.

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