ABNORMAL PSYCH

Risk Rates for Developing Schizophrenia

 
Relationship to Person w/ Schizophrenia % of Risk
Identical Twin 48%
Offspring of 2 Schizophrenic Parents 46%
Fraternal Twin 17%
1 Parent Schizophrenic 13%
General Population 1%
 Adapted from Gottesman, 1991.

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