Judith Gierut

Judith Gierut

Professor, Speech and Hearing Sciences


  • Ph.D., Indiana University, 1985

Research interests

My research examines children's acquisition of the phonological system of the native language, with special emphasis on preschoolers who exhibit functional speech sound delays. The work is grounded in linguistic and psycholinguistic theories, and serves as a test case of these models. The children who participate require clinical intervention, which is delivered as an experimental manipulation, to advance their phonological systems. The outcome of this research has applied consequences that bear directly on issues of the efficacy of clinical treatments. Current funding is from the National Institute on Deafness and Other Communication Disorders DC01694 "Development of Phonological Categories."


The Learnability Project is located in the Department of Speech and Hearing Sciences. The lab is equipped for digital audio and video recording and speech analysis, and relies on a network of Macintosh workstations in data collection and analysis. The experimental treatment of children with phonological delays takes place in the clinical facility of the Department. The clinical treatment rooms are equipped with conventional diagnostic and treatment materials, in addition to computers which are used in presentation of digital picture stimuli. Treatment rooms permit one-way observation of the clinical sessions.


  • Esther L. Kinsley Outstanding Ph.D. Dissertation Award,1986
  • NIH Postdoctoral Fellow, 1985-1988
  • NIH FIRST Independent Research Support and Transition Award, 1988-1993
  • NIH Research Career Development Award, 1992-1997
  • EditorsU Award, American Speech-Language-Hearing Association, 1997
  • Finkelstein Fellow of the College of Arts and Sciences, 1997-2001

Representative publications

Nexus to Lexis: Phonological Disorders in Children (2016)
Judith A. Gierut
Seminars in Speech and Language , 37 (4), 280-290

Effect Size for Single-Subject Design in Phonological Treatment (2015)
Judith A Gierut, Michele L. Morrisette, Stephanie Dickinson
Journal of Speech Language and Hearing Research , 58 (5),

Dense Neighborhoods and Mechanisms of Learning: Evidence from Children with Phonological Delay (2014)
Judith A Gierut, Michele L. Morrisette
Journal of Child Language, 42 (5), 1036-1072

How to Meet the Neighbors: Modality Effects on Phonological Generalization (2014)
Judith A Gierut, Michele L. Morrisette
Clinical Linguistics & Phonetics, 28 (7-8), 477-492

Unraveling phonological conspiracies: A case study (2014)
Daniel A Dinnsen, Michele L. Morrisette, Judith A. Gierut, Darcy E. Rose
Clinical Linguistics & Phonetics, 28 (7-8), 463-476

Abstracting phonological generalizations: Evidence from children with disorders (2014)
Judith A. Gierut, Michele L. Morrisette, Caitlin J. Younger
Perspectives on Phonological Theory and Development, 71-90

The coronal fricative problem (2013)
Daniel A. Dinnsen, Michael C. Dow, Judith A. Gierut, Michele L. Morrisette
Lingua, 131 151-178

Age of word acquisition effects in treatment of children with phonological delays (2012)
Judith A. Gierut, Michele L. Morrisette
Applied Psycholinguistics, 33 (1), 121-144

Density, frequency and the expressive phonology of children with phonological delay (2011)
Judith A. Gierut, Michele L. Morrisette
Journal of Child Language, 39 (4), 804-834

Effect size in clinical phonology (2011)
Judith A. Gierut, Michele L. Morrisette
Clinical Linguistics & Phonetics , 25 (11-12), 975-980

Dissertation Committee Service

Author Dissertation Title Committee
Zapf, Jennifer Comprehension production, and meaning: What the regular English plural can tell us about language (July 2007) Smith, L. (Co-Chair), Jones, S., Gierut, J (Co-Chair)., Gasser, M.