Which of the following statements is true?

Which of the following statements is true?
 
  A) Genes do not affect biochemical processes.
  B) The genes that will be expressed in an individual are not affected by experience.
  C) Genes play a role in most mental disorders.
  D) Most behavioral disorders are determined exclusively by genes.

Question 2

Cortisol is a hormone that
 
  A) the adrenal gland produces that mobilizes the body to deal with stress.
  B) the pituitary gland releases to stimulate the adrenal gland.
  C) reduces the reuptake of the monamine neurotransmitters.
  D) is released by the hypothalamus and travels to the pituitary gland, causing it to respond.

Question 3

Dennis has disorganized type of schizophrenia. He has lived in an institution for years. He rarely shows
  any attempt at socializing. A new program is started: every time Dennis speaks to another person he is
  given a piece of red paper.
 
  At the end of each week, he can use the red papers to get cigarettes or extra
  privileges. This new program is
 
  A) guided exposure. B) an in vivo exposure program.
  C) a token economy. D) modeling.