Whenever five-year-old Claire goes to the dentist,she becomes anxious and cries.Since she was not afraid of the dentist on her first visit,her fear is a learned behaviour.The US in this case was probably _________________.
A)the dentist's beard
B)sweet toothpaste
C)painful teeth cleaning
D)small prizes given after the exam

Question

Quizplus · Accepted Answer

The unconditioned stimulus (US) is likely the painful teeth cleaning, which naturally caused discomfort and led to Claire's learned fear of the dentist.

Whenever Five-Year-Old Claire Goes to the Dentist,she Becomes Anxious and Cries.Since