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Positive versus negative schizophrenia and basic symptoms.

V Peralta1, M J Cuesta, J de Leon

  • 1Medical College of Pennsylvania, Eastern Pennsylvania Psychiatric Institute, Philadelphia 19129.

Comprehensive Psychiatry
|May 1, 1992
PubMed
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This study found that basic symptoms in schizophrenia are more common in patients with positive symptoms, not negative ones. Basic symptoms showed a moderate link to formal thought disturbances in patients diagnosed using Research Diagnostic Criteria.

Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Neuroscience

Background:

  • Schizophrenia classification systems, such as Andreasen and Olsen's typology, aim to categorize symptom presentations.
  • Basic symptoms, often related to subjective experiences, are distinct from the more observable 'positive' and 'negative' symptom domains.
  • Understanding the relationship between different symptom clusters is crucial for refining diagnostic criteria and treatment strategies.

Purpose of the Study:

  • To investigate the association between basic symptoms and the positive/negative symptom dimensions of schizophrenia.
  • To examine the relationship between basic symptoms and formal thought disturbances.
  • To explore the utility of the Frankfurt Complaint Questionnaire in characterizing schizophrenia subtypes.

Main Methods:

Related Experiment Videos

  • A sample of 71 patients diagnosed with schizophrenia according to Research Diagnostic Criteria (RDC) was assessed.
  • The Frankfurt Complaint Questionnaire was used to measure basic symptoms.
  • Andreasen and Olsen's classification of schizophrenia types (positive vs. negative symptoms) was applied.

Main Results:

  • The study did not find evidence supporting an overlap between negative symptoms and basic symptoms.
  • Basic symptoms were observed more frequently in patients categorized with positive symptoms of schizophrenia.
  • A moderate positive correlation (r = .3) was found between basic symptoms and formal thought disturbances.

Conclusions:

  • Basic symptoms do not appear to be synonymous with negative symptoms in schizophrenia.
  • The findings suggest a potential link between basic symptoms and positive symptom clusters.
  • Basic symptoms may be associated with cognitive impairments, specifically formal thought disturbances, in schizophrenia.