Evidence that adjunctive processes contribute to drug abuse ...

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Evidence that adjunctive processes contribute to drug abuse includes the fact that:
 
  A) schedule-induced polydipsia has been used to induce rats to drink excessive amounts of water containing drugs.
  B) drug abuse is frequently found in settings that provide sparse levels of reinforcement.
  C) Both a and b are correct.
  D) Neither a nor b is correct.

Question 2

While awaiting his turn at the doctor's office, Gunther bites his nails continuously. This is an example of:
 
  A) resurgence.
  B) sign tracking.
  C) adjunctive behavior.
  D) spontaneous recovery.

[IAPPLET]

Answer to Question 1

C

Answer to Question 2

C

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TYSM

[atrochim]

Thanks for the timely response, appreciate it