Learning and memory impairment in cocaine-dependent and comorbid schizophrenic patients

@article{Serper2000LearningAM,
  title={Learning and memory impairment in cocaine-dependent and comorbid schizophrenic patients},
  author={Mark R. Serper and Andrea Bergman and Marc L. Copersino and James C.-Y. Chou and Danielle Richarme and Robert Cancro},
  journal={Psychiatry Research},
  year={2000},
  volume={93},
  pages={21-32}
}

Cognitive disparity in schizophrenics with and without cocaine dependency.

Neuropsychological functioning and age-related changes in schizophrenia and/or cocaine dependence

Neurocognitive Characteristics of Individuals With Schizophrenia and Cocaine Dependence: Comparison of Currently Dependent and Remitted Groups

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Few neuropsychological differences between remitted and current dependent states across the SZ and AD groups suggest that cognitive impairment may be relatively static in these populations.

Working memory and depressive symptoms in patients with schizophrenia and substance use disorders

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Investigating the potential differences in psychiatric symptoms and cognition between schizophrenia patients with and without substance use disorders found patients in the dual diagnosis group displayed more severe depressive symptoms and poorer strategy during the working memory task.

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The results suggest that alcohol abuse in schizophrenia is associated with more impaired functioning across many domains, including memory impairment, negative and general psychopathology symptoms, and adaptive functions.

Inferior performance on selected neuropsychological tests in abstinent schizophrenia patients who have used cannabis

TLDR
It turned out that the group of patients who used cannabis, despite the shortest duration of disease and that of addiction, and highest percentage of using atypical antipsychotics, performed worse on all cognitive tests, compared to the groups with predominant opioid or amphetamine use.

Cognitive functioning associated with stimulant use in patients with non-affective psychosis, their unaffected siblings and healthy controls

TLDR
The presence of cognitive deficits associated with lifetime stimulant use is dependent on the frequency of use, with no observed deficits in infrequent users and modest negative effects in frequent users.

The effects of cannabis use on neurocognition in schizophrenia: A meta-analysis

...

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