Perseverative dysgraphia: A selective disorder in writing double letters

A. Venneri, R. Cubelli, P. Caffarra

Research output: Contribution to journalArticlepeer-review


Models of writing processes postulate that abstract graphemic representations contain information about letter doubling independent of letter identity. We describe a patient, R.T., who made perseverative errors only in handwriting geminate letters, [e.g.: "CORTECCIA" (cortex) → "CORTECCCIA"]. Perseveration was specific to orthograpy. To explain R.T.'s errors, we argue that after the selection of the correct graphic motor programs, the geminate feature induced a perseverative graphic behaviour. This form of dysgraphia supports the notion that graphemic representations contain specific information about letter doubling.

Original languageEnglish
Pages (from-to)923-931
Number of pages9
Issue number8
Publication statusPublished - 1994

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Neuropsychology and Physiological Psychology


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