Single word production in nonfluent progressive aphasia

Karen Croot, Karalyn Patterson*, John R. Hodges

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)


We present an experimental investigation of the spoken single word production of two patients with nonfluent progressive aphasia. In Experiment I, a task effect (reading > repetition > naming) suggested that phonological information available from task stimuli facilitated the patients' speech production; a length effect reflected the increased difficulty of phonological processing required for long words compared with that required for shorter words. Experiment 2 compared repetition, reading, copying, and writing to dictation tasks and demonstrated that a correspondence between input and output modality also facilitated performance. Experiment 3 showed that the patients' access to appropriate phonology in reading was positively related to the degree of correlation between orthographic and phonological forms. These results are discussed with reference to an account of pathologically weakened connections between nodes in an interactive spreading activation model of speech production of the type described by Dell (1986).

Original languageEnglish
Pages (from-to)226-273
Number of pages48
JournalBrain and Language
Issue number2
Publication statusPublished - 1 Feb 1998
Externally publishedYes


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