Phonologic errors in the logopenic variant of primary progressive aphasia

Diana Petroi, Joseph R. Duffy, Edythe A. Strand, Keith A. Josephs

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Background: One of the distinguishing characteristics of logopenic progressive aphasia (LPA) is phonologic errors, but few data exist that document the frequency of such errors across a variety of language tasks.Aims: The primary aim of this study was to investigate the frequency of phonologic errors across a variety of spoken language tasks in participants with LPA.Methods & Procedures: Detailed descriptive analysis was based on data obtained from video recordings of 22 participants with LPA. Nine tasks were analysed for phonologic errors.Outcomes & Results: All participants made some phonologic errors, with presence/absence of such errors varying across tasks. Tasks that were most likely to elicit phonologic errors were reading nonwords, repetition of multisyllabic words, reading irregular words, and the 15-item Boston Naming Test. Factors such as task nature or complexity, severity of aphasia, and, possibly, education influenced the frequency of phonologic errors.Conclusions: Our findings support the current consensus criteria that indicate that phonologic errors are a frequent but not a required characteristic for a diagnosis of LPA.

Original languageEnglish (US)
Pages (from-to)1223-1243
Number of pages21
Issue number10
StatePublished - Oct 2014


  • Logopenic progressive aphasia
  • Paraphasias
  • Phonologic errors
  • Primary progressive aphasia

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Language and Linguistics
  • Developmental and Educational Psychology
  • Linguistics and Language
  • Neurology
  • Clinical Neurology
  • LPN and LVN


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