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Is there psychopathology in the coparents of schizophrenic adoptees' half-siblings?
1Laboratory of Psychology and Psychopathology, NIMH, Bethesda, Maryland 20892-1366, USA.
Abstract:
An excess of schizophrenia has been observed in the biological relatives of adoptees with schizophrenia. The present analysis examined the possibility that illness observed among 90 half-siblings may have been influenced by assortative mating resulting in excess illness in the biological parents of the half-siblings not biologically related to the adoptees (the coparents). We found no difference in the prevalence of mental illness between 44 index and 26 control coparents.
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