Premorbid intelligence of inpatients with different psychiatric diagnoses does not differ

Alessandro Rossi
2008 Neuropsychiatric Disease and Treatment  
The diagnostic specifi city of poor premorbid intelligence is controversial. We explored premorbid intelligence level in psychiatric patients with personality disorders, depressive disorders, bipolar disorders and schizophrenic disorders. 273 consecutively admitted patients and 81 controls were included in the study and tested with the 'Test di Intelligenza Breve', an Italian adaptation of the National Adult Reading Test. Signifi cant differences between the clinical samples and the control
more » ... and the control subjects were found but not among the 4 clinical groups. The observation of premorbid IQ defi cits in subjects with diagnoses other than schizophrenia suggests a common vulnerability diathesis, which is most likely to have a neurodevelopmental basis.
doi:10.2147/ndt.s4066 fatcat:pm4wsyj35va4tbtqom5ijcrt4m