In comparing different types of psychological disorders, schizophrenia occurs:
a. less frequently than anxiety disorders, but more frequently than depressive and bipolar disorders
b. less frequently than either anxiety or depressive and bipolar disorders
c. more frequently than either anxiety or depressive and bipolar disorders
d. more frequently than anxiety disorders, but less frequently than depressive and bipolar disorders
B
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Jonah and Eli are having a conversation about how the brain works. Jonah maintains that the brain must be much more active when a person is focused and attending to a problem, while Eli points out that the brain operates with the same activity no matter how focused a person is. Who is right?
a. ?Neither is right, because the brain exhibits about 5% more activity when a person is focused compared to when they are unfocused. b. ?Jonah is right, as the brain shows between an 80 and 85% increase in activity when a person is focused compared to when they are unfocused. c. ?Eli is right, because the brain activity level does not change at all when a person’s focus level changes. d. ?Neither is right, because the brain actually exhibits 10 to 15% lessactivity when a person is focused compared to when they are unfocused.
An ultrasound:
a. uses x-ray photography to take a picture of the unborn child. b. can be heard by the human ear. c. yields a picture called a "cat-scan." d. bounces sound waves off of the fetus.
In cell differentiation, the trophoblast will eventually become the
A) heart and lungs. B) spinal cord and brain. C) amniotic sac, placenta, and umbilical cord. D) limb buds.
Which statement is true regarding seasonal affective disorder?
A. There is no genetic component. B. Resetting a person's circadian rhythm can help. C. It is related to the depression gene. D. It only affects people in warm climates.