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Twin Studies with those with Schizophrenia
About half of monozygotic twins with schizophrenia are concordant with the disorder, where it is only 17% for dizygotic twins. This shows evidence for genetic factor for the disorder, since monozygotic twins are more closely related than dizygotic twins.
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Twin Studies with those with Schizophrenia
The Minnesota Study of Twins Reared Apart
A researcher studying the origins of a specific psychological trait finds that if one identical twin has the trait, there is an 85% probability that the other twin also has it. For fraternal twins, the probability is only 30%. What is the most logical conclusion to draw from these findings?
Twin Studies with those with Schizophrenia
Correlation Between Genetic Relatedness and Schizophrenia Risk
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Behavioral Distinctions between Twins with and without Schizophrenia
Research has found that if one identical twin develops schizophrenia, the other twin has about a 50% chance of also developing the disorder. However, if one fraternal twin develops schizophrenia, the other twin has only about a 17% chance. Based on these findings, what is the most accurate evaluation of the factors contributing to schizophrenia?
A large-scale study finds that if one identical twin is diagnosed with a specific psychological disorder, there is a 48% chance the other twin will also have the disorder. For fraternal twins, this chance is only 17%. Based on these findings, what is the most logical conclusion about the nature of this disorder?