Answer:
metacognitive ability
Explanation:
metacognitive ability refers to someone's ability to become aware of our own thinking process. This ability is gradually formed as we grow older depending on how the environment teach us and will influence the way we solve problem when we grow up.
People who have less developed metacognitive ability tend to not aware that sometimes changes in approach are necessary in order to solve a certain problem. From the case above, we can infer that Illeana have more developed metacognitive ability compared to her friends.