Which of the three primary divisions of the brain includes the cortex, basal ganglia and the limbic system?

Why do biological theories of anxiety disorders consider serotonin to be important?

a. serotonin is lower in the CSF of people with anxiety disorders b. biochemical challenges that alter serotonin levels are related to increases or decreases in feelings of anxiety c. people who are prescribed SSRIs, which increase serotonin, report that their feelings of anxiety decrease d. all of the above

Delusions experienced by those with delusional disorder tend to be _____; delusions experienced by those with schizophrenia tend to be _____.

a. impossible; at least possible b. at least possible; impossible c. vivid; vague d. vague; vivid