Sandy had learned that if her mother was smiling at her when she came into the kitchen,it meant that Sandy would probably be given a treat to eat if she asked nicely.But if her mother was frowning,she would not give Sandy anything and instead would shoo her away.Sandy's mother's facial expression was serving as a __________.
A)conditioned stimulus.
B)discriminative stimulus.
C)positive reinforcer.
D)negative reinforcer.

Question

Quizplus · Accepted Answer

The Answer is B

Sandy Had Learned That If Her Mother Was Smiling at Her