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Behavioral Science

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70 Deja Review: <strong>Behavioral</strong> <strong>Science</strong><br />

Genetic markers on which 1, 6, 8, and 13<br />

chromosome(s) are associated with<br />

schizophrenia?<br />

Does schizophrenia have a familial<br />

component?<br />

Yes—the closer a relative you are, the<br />

more likely you are to develop<br />

schizophrenia; but concordance in twins<br />

is not 100%.<br />

What is the likelihood of developing 10%<br />

schizophrenia if you are a first-degree<br />

relative of an affected individual?<br />

What is the likelihood that a child 40%<br />

will develop schizophrenia if both<br />

parents have the disorder?<br />

What is the likelihood that the 50%<br />

monozygotic twin of a patient with<br />

schizophrenia will develop the<br />

disorder?<br />

What is the likelihood of developing 25%<br />

any mood disorder if you are a firstdegree<br />

relative of a person with bipolar<br />

disorder?<br />

What is the likelihood of developing 60%<br />

any mood disorder if someone is a child<br />

with both parents who have bipolar<br />

disorder?<br />

What is the likelihood of developing 80% to 90%<br />

bipolar disorder if you are the<br />

monozygotic twin of a person with<br />

the disorder?<br />

Is the genetic component stronger for<br />

schizophrenia or bipolar disorder?<br />

In which gender is the lifetime<br />

prevalence of a major depressive<br />

disorder higher?<br />

Bipolar disorder<br />

Females<br />

What is the percentage of males who 10%<br />

will develop a major depressive<br />

disorder in their lifetime?<br />

What is the percentage of females 15% to 20%<br />

who will develop a major depressive<br />

disorder in their lifetime?

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