When monkeys are hooked up to an apparatus so that a small injection of a drug directly into the bloodstream occurs when the animals perform same response, which of the following drugs are they likely to self-administer?
A)cocaine
B)amphetamine
C)morphine
D)all of these

Question

Quizplus · Accepted Answer

Studies have shown that monkeys will self-administer all of these drugs when given the opportunity. This method of drug self-administration is often used to study addiction and the reinforcing properties of drugs on the brain.

When Monkeys Are Hooked Up to an Apparatus So That