Effie no longer eats egg salad sandwiches - some time ago, she found herself "praying to the porcelain God" after consuming a sandwich in which the mayonnaise must have spoiled. Which alternative below correctly identifies a stimulus in this situation?
A) US - bacteria
B) CS -- nausea
C) US -- food
D) CS -- bacteria

Question

Quizplus · Accepted Answer

In classical conditioning, the unconditioned stimulus (US) elicits an unconditioned response (UR) without prior learning. In this situation, the US is the bacteria that caused the food poisoning, which led to Effie's nausea (UR). Therefore, the correct choice is A. The egg salad sandwich may represent the conditioned stimulus (CS), but it is not included in the options given.

Effie No Longer Eats Egg Salad Sandwiches - Some Time