Cognitive functioning and symptomatology in chronic schizophrenia
- Resource Type
- Authors
- Kathryn Carruthers; Thomas R. E. Barnes; Jeremy C. Speller; Sallie Baxendale; Christos Pantelis; Hazel E. Nelson
- Source
- Psychological medicine. 20(2)
- Subject
- Adult
Male
Psychosis
medicine.medical_specialty
Intelligence
Bradyphrenia
Neurocognitive Disorders
Neuropsychological Tests
Thinking
Borderline intellectual functioning
medicine
Reaction Time
Humans
Cognitive skill
Psychiatry
Applied Psychology
Biological Psychiatry
Psychiatric Status Rating Scales
Intelligence quotient
business.industry
Wechsler Scales
Wechsler Adult Intelligence Scale
Cognition
medicine.disease
Psychiatry and Mental health
Schizophrenia
Cognitive remediation therapy
Mental Recall
Chronic schizophrenia
Female
Schizophrenic Psychology
medicine.symptom
Psychology
business
Cognition Disorders
Psychomotor Performance
Clinical psychology
- Language
- ISSN
- 0033-2917
SynopsisChronic schizophrenic patients in a long stay hospital were found to have low levels of intelligence (mean IQ of 80), which was attributed to the effects of substantial intellectual deterioration on below average pre-morbid levels of functioning. Patients with the lowest IQ scores had the least severe positive symptoms but symptomatology was not related to age or extent of intellectual decline. Speed of functioning was relatively more impaired than level of intellectual functioning, with cognitive speed being more affected than motor speed. The severity of negative but not positive symptoms was significantly related to the severity of bradyphrenia (cognitive slowing), a result which would be consistent with the notion of a subcortical pathology in patients with Type II schizophrenia.