Deficits in Finite Verb Morphology Some Assumptions in Recent Accounts of Specific Language Impairment Research Note
Research Note  |   June 01, 1998
Deficits in Finite Verb Morphology
 
Author Affiliations & Notes
  • Carol A. Miller
    Department of Audiology and Speech Sciences Purdue University West Lafayette, Indiana
  • Laurence B. Leonard
    Department of Audiology and Speech Sciences Purdue University West Lafayette, Indiana
  • Contact author: Carol A. Miller, PhD, Department of Audiology and Speech Sciences, Heavilon Hall B-13, Purdue University, West Lafayette, IN 47907-1353. Email: millerc@omni.cc.purdue.edu
Article Information
Language Disorders / Specific Language Impairment / Language / Research Note
Research Note   |   June 01, 1998
Deficits in Finite Verb Morphology
Journal of Speech, Language, and Hearing Research, June 1998, Vol. 41, 701-707. doi:10.1044/jslhr.4103.701
History: Received February 14, 1997 , Accepted September 5, 1997
 
Journal of Speech, Language, and Hearing Research, June 1998, Vol. 41, 701-707. doi:10.1044/jslhr.4103.701
History: Received February 14, 1997; Accepted September 5, 1997

The grammatical morphology deficits common in children with specific language impairment (SLI) are characterized in some models as linguistic deficits. Such models must assume some mechanism for correct productions of finite verb forms. Three such assumptions were tested by analyzing speech samples from 18 children with SLI (aged 3 years 6 months to 6 years 9 months). Assumption 1, that nonfinite forms are used consistently until replaced by memorized finite forms, was tested by examining the distribution of verb types in present thirdperson singular and noun types in present third-person singular contractible copula contexts. Significantly more word types than expected were inflected inconsistently. Both Assumption 2, that finite and nonfinite verb forms are memorized but used indiscriminately, and Assumption 3, that affixation rules are applied indiscriminately, predict random use of finite forms. This prediction was not supported.

Acknowledgments
Thanks to Erika Gerber for her assistance in organizing and compiling the data.
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