Clinical Forum  |   February 2007
Complexity in Treatment of Syntactic Deficits
Author Affiliations & Notes
  • Cynthia K. Thompson
    Northwestern University, Evanston, IL
  • Lewis P. Shapiro
    San Diego State University, San Diego, CA
  • Contact author: Cynthia K. Thompson, Department of Communication Sciences and Disorders, Northwestern University, 2240 Campus Drive, Evanston, IL 60208-3540. E-mail: ckthom@northwestern.edu.
Language Disorders / Aphasia / Clinical Forum / Epilogue
Clinical Forum   |   February 2007
Complexity in Treatment of Syntactic Deficits
American Journal of Speech-Language Pathology February 2007, Vol.16, 30-42. doi:10.1044/1058-0360(2007/005)
History: Accepted 23 Aug 2006 , Received 22 Jan 2005
American Journal of Speech-Language Pathology February 2007, Vol.16, 30-42. doi:10.1044/1058-0360(2007/005)
History: Accepted 23 Aug 2006 , Received 22 Jan 2005

Purpose: This article addresses complexity in the context of treatment for sentence structural impairments in agrammatic aphasia, with emphasis on noncanonical sentences involving linguistic movement and their related counterparts. Extensions of the complexity effect to recovery of canonical sentences also are discussed, stressing the linguistic properties of verbs as well as grammatical morphology in building complexity hierarchies.

Method: A number of variables to consider in developing complexity hierarchies in the syntactic domain are addressed, and a series of studies using single-subject controlled experimental analysis are discussed.

Results: Findings across studies show that training complex sentences results in improvement of simpler structures when, and only when, the underlying linguistic properties are shared by both. The opposite approach, training simple structures first and building to more complex ones, does not provide the full benefit of treatment, in that little or no generalization occurs across structures.

Conclusion: Using complex language material as a starting point for treatment of sentence structural deficits in aphasia results in cascading generalization to simpler, linguistically related material and expands spontaneous language production in many language-disordered adults with aphasia. Clinicians are, therefore, urged to adopt this approach in clinical practice, even though it is counterintuitive and departs significantly from conventional treatment methods.

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