I would say Holden is an amplified version of an average teen. I had no major trauma to speak of, no dead brother to grieve, but I was similarly jaded about life and disgusted with most adult behaviour at Holden's age. Most teens go through major inner turmoil, regardless of how perfect their life may seem (Ordinary People is a good one for this). Especially with this generation and divorce levels.
Edwina- I know the book you're talking about, just can't remember the title. I can even picture the book cover!! I, too, loved The Chosen. I read it in the sixth grade because of an older brother had it on hand and it had a big influence on me.
I do remember reading plenty of girl coming of age books. Oh, Judy Blume!
Bookmarks