A rat learns that pressing the lever in the operant chamber will only deliver food if a red light above the lever is on. In this scenario, the red light is acting as a _________________
A) discriminative stimulus
B) reinforcer
C) conditioned stimulus (CS)
D) punisher
Answer: A
Rationale: In operant conditioning, a discriminative stimulus is a cue or event that indicates that a response, if made, will be reinforced.
Psychology
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