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 the importance of ____________ in developing opioid addiction.
A)withdrawal symptoms
B)positive reinforcement
C)peer pressure
D)tolerance

Question

Quizplus · Accepted Answer

The fact that animals will self-administer low doses of opioids shows that the drugs have a positive reinforcing effect, which is a crucial factor in the development of addiction. Withdrawal symptoms and tolerance can also contribute to addiction, but this particular experiment specifically highlights the importance of positive reinforcement. Peer pressure is not relevant in this context.

The Fact That Animals with No History of Opioid Withdrawal