Answer:
observational learning
Explanation:
Observational learning is a type of social learning that occurs by observing the behavior of others. it does not require reinforcement but a role model such as parents, friends, movie characters. Even if the social model does not want to instill a behavior, the learner learns or imitate the model just by observing him or her.
The boys have observed that superman fly and thus starts imitating the same is a perfect example of observational learning.