Classical conditioning is learning that occurs when a neutral stimulus comes to bring about a response after it is paired with a stimulus that naturally brings about a response.
Hi! Can I get the chicken burrito?
Welcome to Cafe Tropical! What would you like to order?
Although Sofia hasn't been affected yet, the unconditioned (natural) stimulus in this scenario is the e. coli in the chicken burrito.
Mmmm, this chicken burrito is delicious!
Due to the e. coli, the unconditioned response is vomiting.
Oh no! I threw up all over the sink because of that burrito.
Now, Sofia can't stand burritos. The sight, smell, and taste of a burrito serve as the conditioned (learned) stimulus.
Hey sweetie! I'm making burritos for dinner tonight!
No burritos! Oh, that smell is awful! I need to go to the restroom.
When smelling the burrito (conditioned stimulus), Sofia rushed to the bathroom to throw up. This means that vomiting is the conditioned response.
Not again...burritos are the enemy!
Even when Sofia's mom started making her tacos instead of burritos, Sofia couldn't eat it. This is because of stimulus generalization. The taste, smell, and sight of a taco is relatively similar to that of a burrito, so she has the same dislike.
Sorry mom, I just can't eat Mexican food in general. It makes me throw up. I'm gonna order Chinese instead.
Are you okay, Sofia? Here, I made you a taco instead.