Nick's Homework:
From a general perspective, Holden Caufield had grown more mature as the novel progresses. At the beginning of the book, Holden had also act like really childish at the start of the book. However, Holden at the end of the book started to act like a normal human being. To further elaborate, he had finally understood that he had to take responsibility, and he learned to face his consequence.
On the other hand, Holden’s emotion vulnerability had never changed throughout the book. In the beginning, he got depressed by not seeing the duck. In the end, he got depressed by seeing the swear on the wall. Although he did become more mature his emotion could still be easily by this society.
In the end, Holden was still an emotion vulnerable person, but his interaction and attitude toward this society had changed throughout the novel.