Abusers of which drug have one of the highest relapse rates for ...

[jazziefee]

Abusers of which drug have one of the highest relapse rates for any category of illicit or licit drug abuse?
 
  a) Methamphetamin
  b) Cocaine
  c) Ephedrine
  d) Amphetamine

Question 2

What did studies showing that animals would self-administer drugs help to explain?
 
  a) That drugs could act as positive reinforcemen
  b) That drugs could cause physical dependence
  c) That drugs could cause psychological dependence
  d) That drugs could act as negative reinforcement

[joneynes]

Answer to Question 1

A

Answer to Question 2

A

[jazziefee]

Great answer, keep it coming

[cici]

Thanks for the timely response, appreciate it