CANTAB explicit memory is less impaired in addicted schizophrenia patients

Stéphane Potvin, Catherine Briand, Antoinette Prouteau, Roch Hugo Bouchard, Olivier Lipp, Pierre Lalonde, Luc Nicole, Alain Lesage, Emmanuel Stip

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


It has been suggested that in order to sustain the lifestyle of substance abuse, addicted schizophrenia patients would have less negative symptoms, better social skills, and less cognitive impairments. Mounting evidence supports the first two assumptions, but data lack regarding cognition in dual diagnosis schizophrenia. Seventy-six schizophrenia outpatients (DSM-IV) were divided into two groups: with (n = 44) and without (n = 32) a substance use disorder. Motor speed and visuo-spatial explicit memory were investigated using CANTAB. As expected, dual diagnosis patients showed a better cognitive performance. Our results suggest either that substance abuse relieves the cognitive deficits of schizophrenia or that the patients with less cognitive deficits are more prone to substance abuse.

Original languageEnglish
Pages (from-to)38-42
Number of pages5
JournalBrain and Cognition
Issue number1
Publication statusPublished - Oct 2005
Externally publishedYes


  • Explicit memory
  • Psychomotor processing
  • Schizophrenia
  • Subjective cognition
  • Substance use disorders

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology
  • Arts and Humanities (miscellaneous)
  • Cognitive Neuroscience


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