The HAROLD, CRUNCH, and STAC models of brain-behavior changes all focus on which of the following concepts?
a. limiting deterioration in the brain
b. limiting plasticity in the brain
c. distributing work in the brain
d. using more neurons in the brain
Ans: d. using more neurons in the brain
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Genetic factors seem to
a. play a stronger role in bipolar than depressive disorders. b. play a stronger role in depressive than bipolar mood disorders c. play an insignificant role in the cause of mood disorders. d. be almost impossible to pinpoint with current technology.
Why do African Americans have an elevated risk for developing sickle-cell anemia?
a) Their diet is conducive to the disease. b) They have very high levels of oxygen in the blood. c) They are prone to produce elevated amounts of cholesterol. d) They are more likely to carry the recessive gene for the disease.