The fact that animals with no history of opioid withdrawal will press a lever to self-administer low doses of intravenous morphine or heroin demonstrates what in our understanding of developing opioid dependence?
A) Withdrawal symptom
B) Positive reinforcement
C) Peer pressure
D) Tolerance

Question

Quizplus · Accepted Answer

This behavior demonstrates positive reinforcement, as the animals are motivated to perform an action (pressing a lever) to receive a reward (the drug), which increases the likelihood of the behavior being repeated. This is a key mechanism in the development of opioid dependence.

The Fact That Animals with No History of Opioid Withdrawal