Writing impairment in schizophasia: two case studies

Area of Science:

• Neuropsychology
• Psychiatry
• Linguistics

Background:

• Paranoid schizophrenia is a severe mental disorder.
• Glossomanic schizophasia is a rare subtype characterized by speech disturbances.
• Understanding the cognitive underpinnings of writing deficits in schizophrenia is crucial.

Observation:

• Two patients with paranoid schizophrenia and glossomanic schizophasia underwent standardized neuropsychological testing.
• Their dictation-taking performance was assessed using a specific protocol (Lecours, 1996).
• Performance was compared against normative data from the general population.

Findings:

• Patients exhibited graphemic paragraphias, substituting target graphemes with phonemically or visually similar ones.
• Examples include replacing 'ph' with 'f' or 'v' for the /f/ phoneme in French.
• These specific errors suggest localized breakdowns in the cognitive writing system.

Implications:

• The findings highlight specific phonological-to-graphemic conversion deficits in schizophrenia.
• This research contributes to cognitive models of writing and language processing.
• Further investigation into the neural basis of these writing errors is warranted.