An early theory of hunger proposed by Cannon and Washburn asserted that people are
motivated to eat when the
a. hypothalamus signals the nervous system that blood-sugar levels are low.
b. temporary fat reservoirs are low.
c. set points for food are triggered by signals from the brain.
d. stomachs are empty.
e. blood-sugar levels are high.
d. stomachs are empty.
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Which of the following statements about brain development is true?
A) At birth, the brain is nearly 70 percent of its adult weight. B) By age 2, the brain is approximately 50 percent of its adult weight. C) Brain growth is especially rapid in the first year, when the brain more than doubles in size. D) Brain development is complete by the end of the first year.
When Freud's students broke away from his theories in order to modify and change them, they were called
a. neo-Freudians. b. functionalists. c. humanists. d. cognitive behaviorists.