Final answer:
The child's excitement when seeing the baseball cap is an example of classical conditioning, where the cap has become a conditioned stimulus eliciting a conditioned response.
Step-by-step explanation:
Your child’s excitement upon seeing your baseball cap is an example of classical conditioning. This is a type of learning where your child has formed an association between the baseball cap, which is a neutral stimulus, and the pleasure of going to the park, which is an unconditioned stimulus that naturally and automatically triggers an excited response or the unconditioned response. Now, the baseball cap has become a conditioned stimulus, and the child’s excitement is the conditioned response because it is a learned reaction.