Ivan Pavlov studied the reflexive flow of saliva in dogs. He used meat powder or other food to trigger the salivation. It was later observed that the salivation in the dog was triggered even before the food was placed in its mouth. In this experiment, ________ was the unconditioned stimulus.
A) food
B) thoughts of anticipation
C) salivation
D) the sight of the food dish

Question

Quizplus · Accepted Answer

In this experiment, the unconditioned stimulus is the food, as it naturally triggers the reflex of salivation in dogs.

Ivan Pavlov Studied the Reflexive Flow of Saliva in Dogs