Thomas F. McNeil

TL;DR: It is concluded that some abnormalities of pregnancy and delivery may be associated with development of schizophrenia and the pathophysiology may involve hypoxia and so future studies should focus on the accurate measurement of this exposure.

TL;DR: The association between obstetric complications and early age at onset of schizophrenia indicates that the pathophysiology of early-onset schizophrenia involves neurodevelopmental impairment.

TL;DR: Findings in a Swedish patient sample suggest a link between substance abuse and the poorer clinical outcome frequently observed, especially in male schizophrenic patients.

TL;DR: Migrant background and history of foreign residence confers an increased risk for schizophrenia that is not solely attributable to selection factors and may also be independent of foreign birth.

TL;DR: The constellation of abnormalities and absence of overt psychopathology in siblings may represent the mildest form of disturbance within the schizophrenia spectrum and an extended assessment battery provides optimal discrimination of patients from normal subjects, and hard signs are more differentially associated with schizophrenia than are soft signs.