A regular drug user can have an elevated reaction to his usual drug if he takes that drug in a new environment. In this example, the familiar environment in which the drug is normally taken is a:
A) CS.
B) US.
C) CR.
D) UR.

Question

Quizplus · Accepted Answer

The familiar environment acts as a Conditioned Stimulus (CS) because it is a neutral stimulus that, through association with the drug use (Unconditioned Stimulus or US), comes to trigger a conditioned response similar to the drug's effects.

A Regular Drug User Can Have an Elevated Reaction to His