Elaboration on Premorbid Intellectual Performance in Schizophrenia

Consistent evidence indicates that some, but not most, patients with schizophrenia have below-average intelligence years before they manifest psychosis. However, it is not clear whether this below-average premorbid intelligence is stable or progressive.To examine whether increased risk for schizophrenia is associated with declining intellectual performance from childhood through adolescence.Historical cohort study of an entire population using...