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Mary K. Fagan, PhD, CCC-SLP

Mary  Fagan

Communication Science and Disorders

Assistant Professor

Phone: (573) 884-6085
Fax: (573) 884-8686

319 Lewis Hall
University of Missouri
Columbia, MO 65211

Educational Background

  • Postdoctoral Fellowship - Indiana University, School of Medicine
  • PhD - University of Missouri, Developmental Psychology
  • MA - San Diego State University, Speech Pathology & Audiology
  • BA - San Diego State University, Speech Pathology & Audiology

Classes Taught

  • Language and Development in Infancy
  • American Phonetics
  • Disorders of Phonology and Articulation
  • Speech Sound Disorders

Research Interests

  • Infant language and cognitive development
  • Attention and exploration in infants with cochlear implants
  • Parent-infant interactions


  • Fagan, M. K. (in press). Cochlear implantation at 12 months: Benefits and limitations for vocabulary development. Cochlear Implants International.
  • Fagan, M. K. (2014). Frequency of vocalization before and after cochlear implantation: Dynamic effect of auditory feedback on infant behavior. Journal of Experimental Child Psychology, 126, 328-338.
  • Fagan, M. K., Bergeson, T. R., & Morris, K. J. (2014). Synchrony, complexity and directiveness in mothers' interactions with infants pre- and post-cochlear implantation. Infant Behavior and Development, 37, 249-257.
  • Fagan, M. K. (2011). Change in measures of infant behavior within six months of cochlear implantation. Cochlear Implants International, 12, S96-S97.
  • Fagan, M. K. & Pisoni, D. B. (2010). Hearing experience and receptive vocabulary development in deaf children with cochlear implants. Journal of Deaf Studies and Deaf Education, 15, 149-161.
  • Fagan, M. K. & Pisoni, D. B. (2009). Perspectives on multisensory experience and cognitive development in infants with cochlear implants. Scandinavian Journal of Psychology, 50, 457-462.
  • Fagan, M. K. (2009). Mean length of utterance before words and grammar: Longitudinal trends and developmental implications of infant vocalizations. Journal of Child Language, 36, 495-527.
  • Fagan, M. K. & Montgomery, T. R. (2009). Managing referrals for children with receptive language delay. Clinical Pediatrics, 48, 72-80.
  • Fagan, M. K. (2008). Toddler’s persistence when communication fails: Response motivation and goal substitution. First Language, 28, 55-69.
  • Horn, D. L., Fagan, M. K., Dillon, C. M., Pisoni, D. B. & Miyamoto, R. T. (2007). Visual-motor integration skills of pre-lingually deaf children: Implications for pediatric cochlear implantation. The Laryngoscope, 117, 2017-2025.
  • Fagan, M. K., & Iverson, J. M. (2007). The influence of mouthing on infant vocalization. Infancy, 11, 191-202. 
  • Fagan, M. K., Pisoni, D. B., Horn, D. L., & Dillon, C. M. (2007). Neuropsychological correlates of vocabulary, reading, and working memory in deaf children with cochlear implants. Journal of Deaf Studies and Deaf Education, 12, 461-471.
  • Iverson, J. M., & Fagan, M. K. (2004). Infant vocal-motor coordination: Precursor to the gesture- speech system? Child Development, 75, 1053-1066.

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