Question

You say "one, two three," and then tickle a baby. After a few repetitions, the baby starts to smile or giggle after the word "three," and before the tickle. What is the unconditioned stimulus?

a. tickling
b. the word "three"
c. the baby
d. smiling or giggling

Answer 1

Answer: the tickle is the unconditioned stimulus,

Explanation: because it makes the baby smile or giggle automatically.