Author Question: Rats that self-injected ________ were more likely to die from an overdose than rats that ... (Read 52 times)

vicky

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Rats that self-injected ________ were more likely to die from an overdose than rats that self-injected ________.
 
  Fill in the blank with the appropriate word.

Question 2

The most effective reinforcer of all available drugs of abuse is ________.
 
  Fill in the blank with the appropriate word.



sierramartinez

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Answer to Question 1

Answer: cocaine; heroin

Answer to Question 2

Answer: crack cocaine



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