Question 1

"Familial" does not mean the same thing as "genetic" because ________

Accepted Answer

families share both genes and the environment

Question 2

Which of the following has been found to lead to an increased risk of developing schizophrenia?

Accepted Answer

Prenatal influenza exposure

Question 3

Which of the following is a plausible explanation for how maternal influenza might lead to schizophrenia later in life?

Accepted Answer

Maternal antibodies could cross the placenta and interfere with brain development such that the risk of developing schizophrenia is enhanced later in life

Question 4

The finding that prenatal viral exposure, rhesus incompatibility, and early nutritional deficiency are associated with an increased risk of developing schizophrenia indicates that ________

Accepted Answer

anything that interferes with normal brain development might lead to a greater risk of schizophrenia

Question 5

In genetic studies, a "proband" or "index case" is someone who ________

Accepted Answer

has the disorder of interest

Question 6

A person who has experiences a sudden onset of psychotic symptoms that last a few days and then pass, often never to return, would be diagnosed with _________

Accepted Answer

brief psychotic disorder

Question 7

If schizophrenia were exclusively a genetic disorder, ________

Accepted Answer

the concordance rate for monozygotic twins would be 100 percent

Question 8

Adopted children who were at high risk for schizophrenia and who were raised in healthy families, ________

Accepted Answer

showed lower risk for schizophrenia than those adopted into dysfunctional families-a good environment may protect people with genetic vulnerabilities from developing schizophrenia

Question 9

The Finnish Adoptive Family Study of Schizophrenia determined that ________

Accepted Answer

index subjects were more likely to develop schizophrenia than the control subjects

Question 10

Studies of family concordance patterns for schizophrenia have found ________

Accepted Answer

that the more genetically related you are to someone with schizophrenia, the greater your risk of the disorder

Question 11

Communication deviance ________

Accepted Answer

may be an environmental risk factor for the development of schizophrenia

Question 12

Studies of the offspring of nonschizophrenic co-twins from discordant twin pairs suggest that ________

Accepted Answer

a genetic predisposition to schizophrenia may remain unexpressed in some individuals unless it is released by some unknown environmental factors

Question 13

Lori just found out that she is pregnant. Her husband has schizophrenia. What is her unborn child's risk of developing schizophrenia?

Accepted Answer

10 percent

Question 14

Adoption studies are typically used ________

Accepted Answer

to separate the effects of nature and nurture

Question 15

What is the major difference between a diagnosis of schizophrenia and schizophreniform disorder?

Accepted Answer

The duration of symptoms

Question 16

The Danish adoption studies have been criticized for ________

Accepted Answer

not assessing the child-rearing environments of the index and control groups

Question 17

Both of Mary's parents have been diagnosed with schizophrenia. Bob has an identical twin, who has schizophrenia. Who is more likely to develop schizophrenia and why?

Accepted Answer

Bob, because he has inherited the same susceptibility that his twin is expressing

Question 18

Studies of adopted children who were at high-risk for developing schizophrenia found that which of the following appeared to increase the likelihood that these children would show high levels of thought disorders?

Accepted Answer

Vague, confusing, and unclear communication

Question 19

Most of the evidence suggests that schizophrenia runs in families. This means that schizophrenia ________

Accepted Answer

may be caused by a combination of genetic and environmental influences

Question 20

Individuals with delusional disorder differ from those with schizophrenia in that ________

Accepted Answer

they behave relatively normally other than the delusions

Quiz 13: Schizophrenia and Other Psychotic Disorders