questions well answered 2025/2026
schizophrenia - ANS ✔✔disorder consisting of unreal or disorganized thoughts and perceptions
as well as verbal, cognitive, and behavioral deficits
prevalence of schizophrenia - ANS ✔✔1-2% of the US population
.5-2% of the world population
typical age of onset of schizophrenia - ANS ✔✔17-25
average age of onset of schizophrenia - ANS ✔✔males - 21
females - 27
prodromal phase of schizophrenia - ANS ✔✔milder symptoms prior to an acute phase of the
disorder, during which behaviors are unusual and peculiar but not yet psychotic or disorganized
active phase of schizophrenia - ANS ✔✔symptoms become apparent
residual phase of schizophrenia - ANS ✔✔symptoms of schizophrenia, such as unusual beliefs or
strange perceptual experiences, that are present for at least 6 months after; return to
prodromal
dopamine hypothesis of schizophrenia - ANS ✔✔symptoms of schizophrenia are caused by
excess levels of dopamine in the brain, particularly in the prefrontal cortex and limbic system
, evidence supporting the dopamine hypothesis - ANS ✔✔-the idea that drugs tend to reduce the
symptoms of schizophrenia, the phenothiazines or neuroleptics, block the reuptake of
dopamine, reducing the functional level in the brain
-the idea that drugs that increase the functional level of dopamine in the brain tend to increase
the incidence of the positive symptoms of schizophrenia
-the idea that neuroimaging studies suggest the presence of more receptors for dopamine and
higher levels of dopamine in some areas of the brain in people with schizophrenia
typical antipsychotic drugs - ANS ✔✔appear to block receptors for dopamine, reducing its
action in the brain; more affective in treating positive symptoms than negative symptoms
examples of typical antipsychotic drugs - ANS ✔✔chlorpromazine, trifluoperazine, thioridazine,
fluphenazine, and perphenazine
atypical antipsychotic drugs - ANS ✔✔seem to be more effective, without the neurological side
effects of typical antipsychotics; help many patients who do not respond to phenothiazines;
appear to reduce negative symptoms and positive symptoms
example of atypical antipsychotic drugs - ANS ✔✔most common is clozapine, which binds to D4
dopamine receptor, while influencing several other neurotransmitters
catatonia - ANS ✔✔group of disorganized behaviors that reflect an extreme lack of
responsiveness to the outside world
delusion - ANS ✔✔fixed belief with no basis in reality
delusion of control - ANS ✔✔belief that one's thoughts are being controlled by outside forces
grandeur delusion - ANS ✔✔false, persistent beliefs that one has superior talents and traits