Verb inflections in agrammatic aphasia: Encoding of tense features

Yasmeen Faroqi-Shah*, Cynthia K. Thompson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

66 Scopus citations


Across most languages, verbs produced by agrammatic aphasic individuals are frequently marked by syntactically and semantically inappropriate inflectional affixes, such as Last night, I walking home. As per language production models, verb inflection errors in English agrammatism could arise from three potential sources: encoding the verbs' morphology based on temporal information at the conceptual level, accessing syntactic well-formedness constraints of verbal morphology, and encoding morphophonological form. We investigate these aspects of encoding verb inflections in agrammatic aphasia. Using three sentence completion experiments, it was demonstrated that production of verb inflections was impaired whenever temporal reference was involved; while morphological complexity and syntactic constraints were less likely to be the source of verb inflection errors in agrammatism. These findings are discussed in relation to current language production models.

Original languageEnglish (US)
Pages (from-to)129-151
Number of pages23
JournalJournal of Memory and Language
Issue number1
StatePublished - Jan 2007


  • Broca's aphasia
  • Inflection
  • Language
  • Models of sentence production
  • Morphology
  • Verb

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Language and Linguistics
  • Experimental and Cognitive Psychology
  • Linguistics and Language
  • Artificial Intelligence


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